mirror of
https://github.com/Alfresco/alfresco-community-repo.git
synced 2025-06-30 18:15:39 +00:00
5102185ae0
70224: Merged V4.2-BUG-FIX (4.2.3) to HEAD-BUG-FIX (4.3/Cloud)
70072: Removed unused imports found during investigation
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@70489 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
2136 lines
85 KiB
Java
2136 lines
85 KiB
Java
/*
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* Copyright (C) 2005-2013 Alfresco Software Limited.
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*
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* This file is part of Alfresco
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*
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* Alfresco is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Alfresco is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.alfresco.repo.content.metadata;
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import java.io.InputStream;
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import java.io.Serializable;
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import java.lang.reflect.Array;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Locale;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.Properties;
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import java.util.Set;
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import java.util.StringTokenizer;
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import java.util.concurrent.Callable;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.FutureTask;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.TimeoutException;
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import org.alfresco.error.AlfrescoRuntimeException;
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import org.alfresco.model.ContentModel;
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import org.alfresco.service.cmr.dictionary.DataTypeDefinition;
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import org.alfresco.service.cmr.dictionary.DictionaryService;
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import org.alfresco.service.cmr.dictionary.PropertyDefinition;
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import org.alfresco.service.cmr.repository.ContentIOException;
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import org.alfresco.service.cmr.repository.ContentReader;
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import org.alfresco.service.cmr.repository.ContentWriter;
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import org.alfresco.service.cmr.repository.MalformedNodeRefException;
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import org.alfresco.service.cmr.repository.MimetypeService;
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import org.alfresco.service.cmr.repository.datatype.DefaultTypeConverter;
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import org.alfresco.service.cmr.repository.datatype.TypeConversionException;
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import org.alfresco.service.namespace.InvalidQNameException;
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import org.alfresco.service.namespace.QName;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.xmlbeans.impl.xb.xsdschema.All;
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import org.joda.time.DateTime;
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import org.joda.time.format.DateTimeFormat;
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import org.joda.time.format.DateTimeFormatter;
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import org.springframework.beans.factory.BeanNameAware;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.ApplicationContextAware;
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import org.springframework.extensions.surf.util.ISO8601DateFormat;
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/**
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* Support class for metadata extracters that support dynamic and config-driven
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* mapping between extracted values and model properties. Extraction is broken
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* up into two phases:
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* <ul>
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* <li>Extract ALL available metadata from the document.</li>
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* <li>Translate the metadata into system properties.</li>
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* </ul>
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* <p>
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* Migrating an existing extracter to use this class is straightforward:
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* <ul>
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* <li>
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* Construct the extracter providing a default set of supported mimetypes to this
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* implementation. This can be overwritten with configurations.
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* </li>
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* <li>
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* Implement the {@link extractInternal} method. This now returns a raw map of extracted
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* values keyed by document-specific property names. The <b>trimPut</b> method has
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* been replaced with an equivalent {@link #putRawValue(String, Serializable, Map)}.
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* </li>
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* <li>
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* Provide the default mapping of the document-specific properties to system-specific
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* properties as describe by the {@link #getDefaultMapping()} method. The simplest
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* is to provide the default mapping in a correlated <i>.properties</i> file.
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* </li>
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* <li>
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* Document, in the class-level javadoc, all the available properties that are extracted
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* along with their approximate meanings. Add to this, the default mappings.
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* </li>
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* </ul>
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*
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* @see #getDefaultMapping()
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* @see #extractRaw(ContentReader)
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* @see #setMapping(Map)
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*
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* @since 2.1
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*
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* @author Jesper Steen Møller
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* @author Derek Hulley
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*/
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abstract public class AbstractMappingMetadataExtracter implements MetadataExtracter, MetadataEmbedder, BeanNameAware, ApplicationContextAware
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{
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public static final String NAMESPACE_PROPERTY_PREFIX = "namespace.prefix.";
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private static final String ERR_TYPE_CONVERSION = "metadata.extraction.err.type_conversion";
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private static final String PROP_DEFAULT_TIMEOUT = "content.metadataExtracter.default.timeoutMs";
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public static final String PROPERTY_PREFIX_METADATA = "metadata.";
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public static final String PROPERTY_COMPONENT_EXTRACT = ".extract.";
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public static final String PROPERTY_COMPONENT_EMBED = ".embed.";
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protected static Log logger = LogFactory.getLog(AbstractMappingMetadataExtracter.class);
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private MetadataExtracterRegistry registry;
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private MimetypeService mimetypeService;
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private DictionaryService dictionaryService;
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private boolean initialized;
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private Set<String> supportedMimetypes;
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private Set<String> supportedEmbedMimetypes;
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private OverwritePolicy overwritePolicy;
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private boolean failOnTypeConversion;
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private Set<DateTimeFormatter> supportedDateFormatters;
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private Map<String, Set<QName>> mapping;
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private Map<QName, Set<String>> embedMapping;
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private boolean inheritDefaultMapping;
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private boolean inheritDefaultEmbedMapping;
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private boolean enableStringTagging;
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private String beanName;
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private ApplicationContext applicationContext;
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private Properties properties;
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private Map<String, MetadataExtracterLimits> mimetypeLimits;
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private ExecutorService executorService;
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/**
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* Default constructor. If this is called, then {@link #isSupported(String)} should
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* be implemented. This is useful when the list of supported mimetypes is not known
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* when the instance is constructed. Alternatively, once the set becomes known, call
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* {@link #setSupportedMimetypes(Collection)}.
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*
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* @see #isSupported(String)
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* @see #setSupportedMimetypes(Collection)
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*/
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protected AbstractMappingMetadataExtracter()
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{
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this(Collections.<String>emptySet());
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}
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/**
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* Constructor that can be used when the list of supported mimetypes is known up front.
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*
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* @param supportedMimetypes the set of mimetypes supported by default
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*/
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protected AbstractMappingMetadataExtracter(Set<String> supportedMimetypes)
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{
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this.supportedMimetypes = supportedMimetypes;
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// Set defaults
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overwritePolicy = OverwritePolicy.PRAGMATIC;
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failOnTypeConversion = true;
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mapping = null; // The default will be fetched
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embedMapping = null;
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inheritDefaultMapping = false; // Any overrides are complete
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inheritDefaultEmbedMapping = false;
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initialized = false;
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}
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/**
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* Constructor that can be used when the list of supported extract and embed mimetypes is known up front.
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*
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* @param supportedMimetypes the set of mimetypes supported for extraction by default
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* @param supportedEmbedMimetypes the set of mimetypes supported for embedding by default
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*/
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protected AbstractMappingMetadataExtracter(Set<String> supportedMimetypes, Set<String> supportedEmbedMimetypes)
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{
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this(supportedMimetypes);
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this.supportedEmbedMimetypes = supportedEmbedMimetypes;
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}
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/**
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* Set the registry to register with. If this is not set, then the default
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* initialization will not auto-register the extracter for general use. It
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* can still be used directly.
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*
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* @param registry a metadata extracter registry
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*/
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public void setRegistry(MetadataExtracterRegistry registry)
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{
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this.registry = registry;
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}
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/**
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* @param mimetypeService the mimetype service. Set this if required.
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*/
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public void setMimetypeService(MimetypeService mimetypeService)
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{
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this.mimetypeService = mimetypeService;
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}
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/**
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* @return Returns the mimetype helper
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*/
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protected MimetypeService getMimetypeService()
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{
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return mimetypeService;
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}
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/**
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* @param dictionaryService the dictionary service to determine which data conversions are necessary
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*/
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public void setDictionaryService(DictionaryService dictionaryService)
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{
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this.dictionaryService = dictionaryService;
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}
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/**
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* Set the mimetypes that are supported by the extracter.
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*
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* @param supportedMimetypes
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*/
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public void setSupportedMimetypes(Collection<String> supportedMimetypes)
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{
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this.supportedMimetypes.clear();
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this.supportedMimetypes.addAll(supportedMimetypes);
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}
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/**
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* Set the mimetypes that are supported for embedding.
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*
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* @param supportedEmbedMimetypes
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*/
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public void setSupportedEmbedMimetypes(Collection<String> supportedEmbedMimetypes)
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{
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this.supportedEmbedMimetypes.clear();
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this.supportedEmbedMimetypes.addAll(supportedEmbedMimetypes);
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}
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/**
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* {@inheritDoc}
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*
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* @see #setSupportedMimetypes(Collection)
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*/
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public boolean isSupported(String sourceMimetype)
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{
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return supportedMimetypes.contains(sourceMimetype) && isEnabled(sourceMimetype);
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}
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/**
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* {@inheritDoc}
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*
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* @see #setSupportedEmbedMimetypes(Collection)
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*/
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public boolean isEmbeddingSupported(String sourceMimetype)
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{
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if (supportedEmbedMimetypes == null)
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{
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return false;
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}
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return supportedEmbedMimetypes.contains(sourceMimetype);
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}
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private boolean isEnabled(String mimetype)
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{
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return properties == null || mimetypeService == null ||
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(getBooleanProperty(beanName+".enabled", true) &&
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getBooleanProperty(beanName+'.'+mimetypeService.getExtension(mimetype)+".enabled", true));
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}
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private boolean getBooleanProperty(String name, boolean defaultValue)
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{
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boolean value = defaultValue;
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if (properties != null)
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{
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String property = properties.getProperty(name);
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if (property != null)
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{
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value = property.trim().equalsIgnoreCase("true");
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}
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}
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return value;
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}
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/**
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* TODO - This doesn't appear to be used, so should be removed / deprecated / replaced
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* @return Returns <code>1.0</code> if the mimetype is supported, otherwise <tt>0.0</tt>
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*
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* @see #isSupported(String)
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*/
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public double getReliability(String mimetype)
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{
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return isSupported(mimetype) ? 1.0D : 0.0D;
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}
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/**
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* Set the policy to use when existing values are encountered. Depending on how the extractor
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* is called, this may not be relevant, i.e an empty map of existing properties may be passed
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* in by the client code, which may follow its own overwrite strategy.
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*
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* @param overwritePolicy the policy to apply when there are existing system properties
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*/
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public void setOverwritePolicy(OverwritePolicy overwritePolicy)
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{
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this.overwritePolicy = overwritePolicy;
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}
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/**
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* Set the policy to use when existing values are encountered. Depending on how the extractor
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* is called, this may not be relevant, i.e an empty map of existing properties may be passed
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* in by the client code, which may follow its own overwrite strategy.
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*
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* @param overwritePolicyStr the policy to apply when there are existing system properties
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*/
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public void setOverwritePolicy(String overwritePolicyStr)
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{
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this.overwritePolicy = OverwritePolicy.valueOf(overwritePolicyStr);
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}
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/**
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* Set whether the extractor should discard metadata that fails to convert to the target type
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* defined in the data dictionary model. This is <tt>true</tt> by default i.e. if the data
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* extracted is not compatible with the target model then the extraction will fail. If this is
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* <tt>false<tt> then any extracted data that fails to convert will be discarded.
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*
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* @param failOnTypeConversion <tt>false</tt> to discard properties that can't get converted
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* to the dictionary-defined type, or <tt>true</tt> (default)
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* to fail the extraction if the type doesn't convert
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*/
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public void setFailOnTypeConversion(boolean failOnTypeConversion)
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{
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this.failOnTypeConversion = failOnTypeConversion;
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}
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/**
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* Set the date formats, over and above the {@link ISO8601DateFormat ISO8601 format}, that will
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* be supported for string to date conversions. The supported syntax is described by the
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* {@link http://java.sun.com/j2se/1.5.0/docs/api/java/text/SimpleDateFormat.html SimpleDateFormat Javadocs}.
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*
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* @param supportedDateFormats a list of supported date formats.
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*/
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public void setSupportedDateFormats(List<String> supportedDateFormats)
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{
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supportedDateFormatters = new HashSet<DateTimeFormatter>();
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// Note: The previous version attempted to create a single DateTimeFormatter from
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// multiple DateTimeFormatters, but that does not work as the time zone part is lost.
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// Now have a set of them.
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for (String dateFormatStr : supportedDateFormats)
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{
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try
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{
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supportedDateFormatters.add(DateTimeFormat.forPattern(dateFormatStr));
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}
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catch (Throwable e)
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{
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// No good
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throw new AlfrescoRuntimeException("Unable to set supported date format: " + dateFormatStr, e);
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}
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}
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}
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/**
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* Set if the property mappings augment or override the mapping generically provided by the
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* extracter implementation. The default is <tt>false</tt>, i.e. any mapping set completely
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* replaces the {@link #getDefaultMapping() default mappings}.
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* <p>
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* Note that even when set to <tt>true</tt> an individual property mapping entry replaces the
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* entry provided by the extracter implementation.
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*
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* @param inheritDefaultMapping <tt>true</tt> to add the configured mapping
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* to the list of default mappings.
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*
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* @see #getDefaultMapping()
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* @see #setMapping(Map)
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* @see #setMappingProperties(Properties)
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*/
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public void setInheritDefaultMapping(boolean inheritDefaultMapping)
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{
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this.inheritDefaultMapping = inheritDefaultMapping;
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}
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@Override
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public void setBeanName(String beanName)
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{
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this.beanName = beanName;
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}
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public String getBeanName()
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{
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return beanName;
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}
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public void setApplicationContext(ApplicationContext applicationContext)
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{
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this.applicationContext = applicationContext;
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}
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/**
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* The Alfresco global properties.
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*/
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public void setProperties(Properties properties)
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{
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this.properties = properties;
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}
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/**
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* Whether or not to enable the pass through of simple strings to cm:taggable tags
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*
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* @param enableStringTagging <tt>true</tt> find or create tags for each string
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* mapped to cm:taggable. <tt>false</tt> (default)
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* ignore mapping strings to tags.
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*/
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public void setEnableStringTagging(boolean enableStringTagging)
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{
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this.enableStringTagging = enableStringTagging;
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}
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/**
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* Set if the embed property mappings augment or override the mapping generically provided by the
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* extracter implementation. The default is <tt>false</tt>, i.e. any mapping set completely
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* replaces the {@link #getDefaultEmbedMapping() default mappings}.
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* <p>
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* Note that even when set to <tt>true</tt> an individual property mapping entry replaces the
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* entry provided by the extracter implementation.
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*
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* @param inheritDefaultEmbedMapping <tt>true</tt> to add the configured embed mapping
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* to the list of default embed mappings.
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*
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* @see #getDefaultEmbedMapping()
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* @see #setEmbedMapping(Map)
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* @see #setEmbedMappingProperties(Properties)
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*/
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public void setInheritDefaultEmbedMapping(boolean inheritDefaultEmbedMapping)
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{
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this.inheritDefaultEmbedMapping = inheritDefaultEmbedMapping;
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}
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/**
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* Sets the map of source mimetypes to metadata extracter limits.
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*
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* @param mimetypeLimits
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*/
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public void setMimetypeLimits(Map<String, MetadataExtracterLimits> mimetypeLimits)
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{
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this.mimetypeLimits = mimetypeLimits;
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}
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/**
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* Gets the <code>ExecutorService</code> to be used for timeout-aware
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* extraction.
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* <p>
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* If no <code>ExecutorService</code> has been defined a default
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* of <code>Executors.newCachedThreadPool()</code> is used during
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* {@link AbstractMappingMetadataExtracter#init()}.
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*
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* @return the defined or default <code>ExecutorService</code>
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*/
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protected ExecutorService getExecutorService()
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{
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return executorService;
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}
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|
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/**
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* Sets the <code>ExecutorService</code> to be used for timeout-aware
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* extraction.
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*
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* @param executorService the <code>ExecutorService</code> for timeouts
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*/
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public void setExecutorService(ExecutorService executorService)
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{
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this.executorService = executorService;
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}
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/**
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* Set the mapping from document metadata to system metadata. It is possible to direct
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* an extracted document property to several system properties. The conversion between
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* the document property types and the system property types will be done by the
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|
* {@link org.alfresco.service.cmr.repository.datatype.DefaultTypeConverter default converter}.
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*
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* @param mapping a mapping from document metadata to system metadata
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*/
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public void setMapping(Map<String, Set<QName>> mapping)
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{
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this.mapping = mapping;
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}
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/**
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* Set the embed mapping from document metadata to system metadata. It is possible to direct
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|
* an model properties to several content file metadata keys. The conversion between
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* the model property types and the content file metadata keys types will be done by the
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* {@link org.alfresco.service.cmr.repository.datatype.DefaultTypeConverter default converter}.
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*
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* @param embedMapping an embed mapping from model properties to content file metadata keys
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*/
|
|
public void setEmbedMapping(Map<QName, Set<String>> embedMapping)
|
|
{
|
|
this.embedMapping = embedMapping;
|
|
}
|
|
|
|
/**
|
|
* Set the properties that contain the mapping from document metadata to system metadata.
|
|
* This is an alternative to the {@link #setMapping(Map)} method. Any mappings already
|
|
* present will be cleared out.
|
|
*
|
|
* The property mapping is of the form:
|
|
* <pre>
|
|
* # Namespaces prefixes
|
|
* namespace.prefix.cm=http://www.alfresco.org/model/content/1.0
|
|
* namespace.prefix.my=http://www....com/alfresco/1.0
|
|
*
|
|
* # Mapping
|
|
* editor=cm:author, my:editor
|
|
* title=cm:title
|
|
* user1=cm:summary
|
|
* user2=cm:description
|
|
* </pre>
|
|
* The mapping can therefore be from a single document property onto several system properties.
|
|
*
|
|
* @param mappingProperties the properties that map document properties to system properties
|
|
*/
|
|
public void setMappingProperties(Properties mappingProperties)
|
|
{
|
|
mapping = readMappingProperties(mappingProperties);
|
|
}
|
|
|
|
/**
|
|
* Set the properties that contain the embed mapping from model properties to content file metadata.
|
|
* This is an alternative to the {@link #setEmbedMapping(Map)} method. Any mappings already
|
|
* present will be cleared out.
|
|
*
|
|
* The property mapping is of the form:
|
|
* <pre>
|
|
* # Namespaces prefixes
|
|
* namespace.prefix.cm=http://www.alfresco.org/model/content/1.0
|
|
* namespace.prefix.my=http://www....com/alfresco/1.0
|
|
*
|
|
* # Mapping
|
|
* cm\:author=editor
|
|
* cm\:title=title
|
|
* cm\:summary=user1
|
|
* cm\:description=description,user2
|
|
* </pre>
|
|
* The embed mapping can therefore be from a model property onto several content file metadata properties.
|
|
*
|
|
* @param embedMappingProperties the properties that map model properties to content file metadata properties
|
|
*/
|
|
public void setEmbedMappingProperties(Properties embedMappingProperties)
|
|
{
|
|
embedMapping = readEmbedMappingProperties(embedMappingProperties);
|
|
}
|
|
|
|
/**
|
|
* Helper method for derived classes to obtain the mappings that will be applied to raw
|
|
* values. This should be called after initialization in order to guarantee the complete
|
|
* map is given.
|
|
* <p>
|
|
* Normally, the list of properties that can be extracted from a document is fixed and
|
|
* well-known - in that case, just extract everything. But Some implementations may have
|
|
* an extra, indeterminate set of values available for extraction. If the extraction of
|
|
* these runtime parameters is expensive, then the keys provided by the return value can
|
|
* be used to extract values from the documents. The metadata extraction becomes fully
|
|
* configuration-driven, i.e. declaring further mappings will result in more values being
|
|
* extracted from the documents.
|
|
* <p>
|
|
* Most extractors will not be using this method. For an example of its use, see the
|
|
* {@linkplain OpenDocumentMetadataExtracter OpenDocument extractor}, which uses the mapping
|
|
* to select specific user properties from a document.
|
|
*/
|
|
protected final Map<String, Set<QName>> getMapping()
|
|
{
|
|
if (!initialized)
|
|
{
|
|
throw new UnsupportedOperationException("The complete mapping is only available after initialization.");
|
|
}
|
|
return Collections.unmodifiableMap(mapping);
|
|
}
|
|
|
|
/**
|
|
* Helper method for derived classes to obtain the embed mappings.
|
|
* This should be called after initialization in order to guarantee the complete
|
|
* map is given.
|
|
* <p>
|
|
* Normally, the list of properties that can be embedded in a document is fixed and
|
|
* well-known.. But some implementations may have
|
|
* an extra, indeterminate set of values available for embedding. If the embedding of
|
|
* these runtime parameters is expensive, then the keys provided by the return value can
|
|
* be used to embed values in the documents. The metadata embedding becomes fully
|
|
* configuration-driven, i.e. declaring further mappings will result in more values being
|
|
* embedded in the documents.
|
|
*/
|
|
protected final Map<QName, Set<String>> getEmbedMapping()
|
|
{
|
|
if (!initialized)
|
|
{
|
|
throw new UnsupportedOperationException("The complete embed mapping is only available after initialization.");
|
|
}
|
|
return Collections.unmodifiableMap(embedMapping);
|
|
}
|
|
|
|
/**
|
|
* A utility method to read mapping properties from a resource file and convert to the map form.
|
|
*
|
|
* @param propertiesUrl A standard Properties file URL location
|
|
*
|
|
* @see #setMappingProperties(Properties)
|
|
*/
|
|
protected Map<String, Set<QName>> readMappingProperties(String propertiesUrl)
|
|
{
|
|
InputStream is = null;
|
|
try
|
|
{
|
|
is = getClass().getClassLoader().getResourceAsStream(propertiesUrl);
|
|
if(is == null)
|
|
{
|
|
throw new AlfrescoRuntimeException(
|
|
"Metadata Extracter mapping properties not found: \n" +
|
|
" Extracter: " + this + "\n" +
|
|
" Bundle: " + propertiesUrl);
|
|
}
|
|
Properties props = new Properties();
|
|
props.load(is);
|
|
// Process it
|
|
Map<String, Set<QName>> map = readMappingProperties(props);
|
|
// Done
|
|
if (logger.isDebugEnabled())
|
|
{
|
|
logger.debug("Loaded mapping properties from resource: " + propertiesUrl);
|
|
}
|
|
return map;
|
|
}
|
|
catch (Throwable e)
|
|
{
|
|
throw new AlfrescoRuntimeException(
|
|
"Unable to load properties file to read extracter mapping properties: \n" +
|
|
" Extracter: " + this + "\n" +
|
|
" Bundle: " + propertiesUrl,
|
|
e);
|
|
}
|
|
finally
|
|
{
|
|
if (is != null)
|
|
{
|
|
try { is.close(); } catch (Throwable e) {}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* A utility method to convert global properties to the Map form for the given
|
|
* propertyComponent.
|
|
* <p>
|
|
* Mappings can be specified using the same method defined for
|
|
* normal mapping properties files but with a prefix of
|
|
* <code>metadata.extracter</code>, the extracter bean name, and the propertyComponent.
|
|
* For example:
|
|
*
|
|
* metadata.extracter.TikaAuto.extract.namespace.prefix.my=http://DummyMappingMetadataExtracter
|
|
* metadata.extracter.TikaAuto.extract.namespace.prefix.cm=http://www.alfresco.org/model/content/1.0
|
|
* metadata.extracter.TikaAuto.extract.dc\:description=cm:description, my:customDescription
|
|
*
|
|
*/
|
|
private Map<Object, Object> getRelevantGlobalProperties(String propertyComponent)
|
|
{
|
|
if (applicationContext == null)
|
|
{
|
|
logger.info("ApplicationContext not set");
|
|
return null;
|
|
}
|
|
Properties globalProperties = (Properties) applicationContext.getBean("global-properties");
|
|
if (globalProperties == null)
|
|
{
|
|
logger.info("Could not get global-properties");
|
|
return null;
|
|
}
|
|
Map<Object, Object> relevantGlobalPropertiesMap =
|
|
new HashMap<Object, Object>();
|
|
String propertyPrefix = PROPERTY_PREFIX_METADATA + beanName + propertyComponent;
|
|
for (Entry<Object, Object> globalEntry : globalProperties.entrySet())
|
|
{
|
|
if (((String) globalEntry.getKey()).startsWith(propertyPrefix))
|
|
{
|
|
relevantGlobalPropertiesMap.put(
|
|
((String) globalEntry.getKey()).replace(propertyPrefix, ""),
|
|
globalEntry.getValue());
|
|
}
|
|
}
|
|
return relevantGlobalPropertiesMap;
|
|
}
|
|
|
|
/**
|
|
* A utility method to convert global properties to the Map form for the given
|
|
* propertyComponent.
|
|
* <p>
|
|
* Mappings can be specified using the same method defined for
|
|
* normal mapping properties files but with a prefix of
|
|
* <code>metadata.extracter</code>, the extracter bean name, and the extract component.
|
|
* For example:
|
|
*
|
|
* metadata.extracter.TikaAuto.extract.namespace.prefix.my=http://DummyMappingMetadataExtracter
|
|
* metadata.extracter.TikaAuto.extract.namespace.prefix.cm=http://www.alfresco.org/model/content/1.0
|
|
* metadata.extracter.TikaAuto.extract.dc\:description=cm:description, my:customDescription
|
|
*
|
|
*/
|
|
protected Map<String, Set<QName>> readGlobalExtractMappingProperties()
|
|
{
|
|
Map<Object, Object> relevantGlobalPropertiesMap = getRelevantGlobalProperties(PROPERTY_COMPONENT_EXTRACT);
|
|
if (relevantGlobalPropertiesMap == null)
|
|
{
|
|
return null;
|
|
}
|
|
return readMappingProperties(relevantGlobalPropertiesMap.entrySet());
|
|
}
|
|
|
|
/**
|
|
* A utility method to convert mapping properties to the Map form.
|
|
*
|
|
* @see #setMappingProperties(Properties)
|
|
*/
|
|
protected Map<String, Set<QName>> readMappingProperties(Properties mappingProperties)
|
|
{
|
|
return readMappingProperties(mappingProperties.entrySet());
|
|
}
|
|
|
|
/**
|
|
* A utility method to convert mapping properties entries to the Map form.
|
|
*
|
|
* @see #setMappingProperties(Properties)
|
|
*/
|
|
private Map<String, Set<QName>> readMappingProperties(Set<Entry<Object, Object>> mappingPropertiesEntries)
|
|
{
|
|
Map<String, String> namespacesByPrefix = new HashMap<String, String>(5);
|
|
// Get the namespaces
|
|
for (Map.Entry<Object, Object> entry : mappingPropertiesEntries)
|
|
{
|
|
String propertyName = (String) entry.getKey();
|
|
if (propertyName.startsWith(NAMESPACE_PROPERTY_PREFIX))
|
|
{
|
|
String prefix = propertyName.substring(17);
|
|
String namespace = (String) entry.getValue();
|
|
namespacesByPrefix.put(prefix, namespace);
|
|
}
|
|
}
|
|
// Create the mapping
|
|
Map<String, Set<QName>> convertedMapping = new HashMap<String, Set<QName>>(17);
|
|
for (Map.Entry<Object, Object> entry : mappingPropertiesEntries)
|
|
{
|
|
String documentProperty = (String) entry.getKey();
|
|
String qnamesStr = (String) entry.getValue();
|
|
if (documentProperty.startsWith(NAMESPACE_PROPERTY_PREFIX))
|
|
{
|
|
// Ignore these now
|
|
continue;
|
|
}
|
|
// Create the entry
|
|
Set<QName> qnames = new HashSet<QName>(3);
|
|
convertedMapping.put(documentProperty, qnames);
|
|
// The to value can be a list of QNames
|
|
StringTokenizer tokenizer = new StringTokenizer(qnamesStr, ",");
|
|
while (tokenizer.hasMoreTokens())
|
|
{
|
|
String qnameStr = tokenizer.nextToken().trim();
|
|
// Check if we need to resolve a namespace reference
|
|
int index = qnameStr.indexOf(QName.NAMESPACE_PREFIX);
|
|
if (index > -1 && qnameStr.charAt(0) != QName.NAMESPACE_BEGIN)
|
|
{
|
|
String prefix = qnameStr.substring(0, index);
|
|
String suffix = qnameStr.substring(index + 1);
|
|
// It is prefixed
|
|
String uri = namespacesByPrefix.get(prefix);
|
|
if (uri == null)
|
|
{
|
|
throw new AlfrescoRuntimeException(
|
|
"No prefix mapping for extracter property mapping: \n" +
|
|
" Extracter: " + this + "\n" +
|
|
" Mapping: " + entry);
|
|
}
|
|
qnameStr = QName.NAMESPACE_BEGIN + uri + QName.NAMESPACE_END + suffix;
|
|
}
|
|
try
|
|
{
|
|
QName qname = QName.createQName(qnameStr);
|
|
// Add it to the mapping
|
|
qnames.add(qname);
|
|
}
|
|
catch (InvalidQNameException e)
|
|
{
|
|
throw new AlfrescoRuntimeException(
|
|
"Can't create metadata extracter property mapping: \n" +
|
|
" Extracter: " + this + "\n" +
|
|
" Mapping: " + entry);
|
|
}
|
|
}
|
|
if (logger.isTraceEnabled())
|
|
{
|
|
logger.trace("Added mapping from " + documentProperty + " to " + qnames);
|
|
}
|
|
}
|
|
// Done
|
|
return convertedMapping;
|
|
}
|
|
|
|
/**
|
|
* A utility method to read embed mapping properties from a resource file and convert to the map form.
|
|
*
|
|
* @param propertiesUrl A standard Properties file URL location
|
|
*
|
|
* @see #setEmbedMappingProperties(Properties)
|
|
*/
|
|
protected Map<QName, Set<String>> readEmbedMappingProperties(String propertiesUrl)
|
|
{
|
|
InputStream is = null;
|
|
try
|
|
{
|
|
is = getClass().getClassLoader().getResourceAsStream(propertiesUrl);
|
|
if(is == null)
|
|
{
|
|
return null;
|
|
}
|
|
Properties props = new Properties();
|
|
props.load(is);
|
|
// Process it
|
|
Map<QName, Set<String>> map = readEmbedMappingProperties(props);
|
|
// Done
|
|
if (logger.isDebugEnabled())
|
|
{
|
|
logger.debug("Loaded embed mapping properties from resource: " + propertiesUrl);
|
|
}
|
|
return map;
|
|
}
|
|
catch (Throwable e)
|
|
{
|
|
throw new AlfrescoRuntimeException(
|
|
"Unable to load properties file to read extracter embed mapping properties: \n" +
|
|
" Extracter: " + this + "\n" +
|
|
" Bundle: " + propertiesUrl,
|
|
e);
|
|
}
|
|
finally
|
|
{
|
|
if (is != null)
|
|
{
|
|
try { is.close(); } catch (Throwable e) {}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* A utility method to convert global mapping properties to the Map form.
|
|
* <p>
|
|
* Different from readGlobalExtractMappingProperties in that keys are the Alfresco QNames
|
|
* and values are file metadata properties.
|
|
* <p>
|
|
* Mappings can be specified using the same method defined for
|
|
* normal embed mapping properties files but with a prefix of
|
|
* <code>metadata.extracter</code>, the extracter bean name, and the embed component.
|
|
* For example:
|
|
*
|
|
* metadata.extracter.TikaAuto.embed.namespace.prefix.cm=http://www.alfresco.org/model/content/1.0
|
|
* metadata.extracter.TikaAuto.embed.cm\:description=description
|
|
*
|
|
* @see #setMappingProperties(Properties)
|
|
*/
|
|
protected Map<QName, Set<String>> readGlobalEmbedMappingProperties()
|
|
{
|
|
Map<Object, Object> relevantGlobalPropertiesMap = getRelevantGlobalProperties(PROPERTY_COMPONENT_EMBED);
|
|
if (relevantGlobalPropertiesMap == null)
|
|
{
|
|
return null;
|
|
}
|
|
return readEmbedMappingProperties(relevantGlobalPropertiesMap.entrySet());
|
|
}
|
|
|
|
/**
|
|
* A utility method to convert mapping properties to the Map form.
|
|
* <p>
|
|
* Different from readMappingProperties in that keys are the Alfresco QNames
|
|
* and values are file metadata properties.
|
|
*
|
|
* @see #setMappingProperties(Properties)
|
|
*/
|
|
protected Map<QName, Set<String>> readEmbedMappingProperties(Properties mappingProperties)
|
|
{
|
|
return readEmbedMappingProperties(mappingProperties.entrySet());
|
|
}
|
|
|
|
/**
|
|
* A utility method to convert mapping properties entries to the Map form.
|
|
* <p>
|
|
* Different from readMappingProperties in that keys are the Alfresco QNames
|
|
* and values are file metadata properties.
|
|
*
|
|
* @see #setMappingProperties(Properties)
|
|
*/
|
|
private Map<QName, Set<String>> readEmbedMappingProperties(Set<Entry<Object, Object>> mappingPropertiesEntries)
|
|
{
|
|
Map<String, String> namespacesByPrefix = new HashMap<String, String>(5);
|
|
// Get the namespaces
|
|
for (Map.Entry<Object, Object> entry : mappingPropertiesEntries)
|
|
{
|
|
String propertyName = (String) entry.getKey();
|
|
if (propertyName.startsWith(NAMESPACE_PROPERTY_PREFIX))
|
|
{
|
|
String prefix = propertyName.substring(17);
|
|
String namespace = (String) entry.getValue();
|
|
namespacesByPrefix.put(prefix, namespace);
|
|
}
|
|
}
|
|
// Create the mapping
|
|
Map<QName, Set<String>> convertedMapping = new HashMap<QName, Set<String>>(17);
|
|
for (Map.Entry<Object, Object> entry : mappingPropertiesEntries)
|
|
{
|
|
String modelProperty = (String) entry.getKey();
|
|
String metadataKeysString = (String) entry.getValue();
|
|
if (modelProperty.startsWith(NAMESPACE_PROPERTY_PREFIX))
|
|
{
|
|
// Ignore these now
|
|
continue;
|
|
}
|
|
|
|
int index = modelProperty.indexOf(QName.NAMESPACE_PREFIX);
|
|
if (index > -1 && modelProperty.charAt(0) != QName.NAMESPACE_BEGIN)
|
|
{
|
|
String prefix = modelProperty.substring(0, index);
|
|
String suffix = modelProperty.substring(index + 1);
|
|
// It is prefixed
|
|
String uri = namespacesByPrefix.get(prefix);
|
|
if (uri == null)
|
|
{
|
|
throw new AlfrescoRuntimeException(
|
|
"No prefix mapping for embed property mapping: \n" +
|
|
" Extracter: " + this + "\n" +
|
|
" Mapping: " + entry);
|
|
}
|
|
modelProperty = QName.NAMESPACE_BEGIN + uri + QName.NAMESPACE_END + suffix;
|
|
}
|
|
try
|
|
{
|
|
QName qname = QName.createQName(modelProperty);
|
|
String[] metadataKeysArray = metadataKeysString.split(",");
|
|
Set<String> metadataKeys = new HashSet<String>(metadataKeysArray.length);
|
|
for (String metadataKey : metadataKeysArray) {
|
|
metadataKeys.add(metadataKey.trim());
|
|
}
|
|
// Create the entry
|
|
convertedMapping.put(qname, metadataKeys);
|
|
}
|
|
catch (InvalidQNameException e)
|
|
{
|
|
throw new AlfrescoRuntimeException(
|
|
"Can't create metadata embedding property mapping: \n" +
|
|
" Extracter: " + this + "\n" +
|
|
" Mapping: " + entry);
|
|
}
|
|
if (logger.isTraceEnabled())
|
|
{
|
|
logger.trace("Added mapping from " + modelProperty + " to " + metadataKeysString);
|
|
}
|
|
}
|
|
// Done
|
|
return convertedMapping;
|
|
}
|
|
|
|
/**
|
|
* Registers this instance of the extracter with the registry. This will call the
|
|
* {@link #init()} method and then register if the registry is available.
|
|
*
|
|
* @see #setRegistry(MetadataExtracterRegistry)
|
|
* @see #init()
|
|
*/
|
|
public final void register()
|
|
{
|
|
init();
|
|
|
|
// Register the extracter, if necessary
|
|
if (registry != null)
|
|
{
|
|
registry.register(this);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Provides a hook point for implementations to perform initialization. The base
|
|
* implementation must be invoked or the extracter will fail during extraction.
|
|
* The {@link #getDefaultMapping() default mappings} will be requested during
|
|
* initialization.
|
|
*/
|
|
protected void init()
|
|
{
|
|
Map<String, Set<QName>> defaultMapping = getDefaultMapping();
|
|
if (defaultMapping == null)
|
|
{
|
|
throw new AlfrescoRuntimeException("The metadata extracter must provide a default mapping: " + this);
|
|
}
|
|
|
|
// Was a mapping explicitly provided
|
|
if (mapping == null)
|
|
{
|
|
// No mapping, so use the default
|
|
mapping = defaultMapping;
|
|
}
|
|
else if (inheritDefaultMapping)
|
|
{
|
|
// Merge the default mapping into the configured mapping
|
|
for (String documentKey : defaultMapping.keySet())
|
|
{
|
|
Set<QName> systemQNames = mapping.get(documentKey);
|
|
if (systemQNames == null)
|
|
{
|
|
systemQNames = new HashSet<QName>(3);
|
|
mapping.put(documentKey, systemQNames);
|
|
Set<QName> defaultQNames = defaultMapping.get(documentKey);
|
|
systemQNames.addAll(defaultQNames);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Override with any extract mappings specified in global properties
|
|
Map<String, Set<QName>> globalExtractMapping = readGlobalExtractMappingProperties();
|
|
if (globalExtractMapping != null && globalExtractMapping.size() > 0)
|
|
{
|
|
for (String documentKey : globalExtractMapping.keySet())
|
|
{
|
|
mapping.put(documentKey, globalExtractMapping.get(documentKey));
|
|
}
|
|
}
|
|
|
|
// The configured mappings are empty, but there were default mappings
|
|
if (mapping.size() == 0 && defaultMapping.size() > 0)
|
|
{
|
|
logger.warn(
|
|
"There are no property mappings for the metadata extracter.\n" +
|
|
" Nothing will be extracted by: " + this);
|
|
}
|
|
|
|
if (executorService == null)
|
|
{
|
|
executorService = Executors.newCachedThreadPool();
|
|
}
|
|
|
|
if (mimetypeLimits == null)
|
|
{
|
|
if (properties != null)
|
|
{
|
|
String property = properties.getProperty(PROP_DEFAULT_TIMEOUT);
|
|
if (property != null)
|
|
{
|
|
Long value = Long.parseLong(property);
|
|
if (value != null)
|
|
{
|
|
MetadataExtracterLimits limits = new MetadataExtracterLimits();
|
|
limits.setTimeoutMs(value);
|
|
mimetypeLimits = new HashMap<String, MetadataExtracterLimits>(1);
|
|
mimetypeLimits.put("*", limits);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
Map<QName, Set<String>> defaultEmbedMapping = getDefaultEmbedMapping();
|
|
|
|
// Was a mapping explicitly provided
|
|
if (embedMapping == null)
|
|
{
|
|
// No mapping, so use the default
|
|
embedMapping = defaultEmbedMapping;
|
|
}
|
|
|
|
else if (inheritDefaultEmbedMapping)
|
|
{
|
|
// Merge the default mapping into the configured mapping
|
|
for (QName modelProperty : defaultEmbedMapping.keySet())
|
|
{
|
|
Set<String> metadataKeys = embedMapping.get(modelProperty);
|
|
if (metadataKeys == null)
|
|
{
|
|
metadataKeys = new HashSet<String>(3);
|
|
embedMapping.put(modelProperty, metadataKeys);
|
|
Set<String> defaultMetadataKeys = defaultEmbedMapping.get(modelProperty);
|
|
metadataKeys.addAll(defaultMetadataKeys);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Override with any embed mappings specified in global properties
|
|
Map<QName, Set<String>> globalEmbedMapping = readGlobalEmbedMappingProperties();
|
|
if (globalEmbedMapping != null && globalEmbedMapping.size() > 0)
|
|
{
|
|
for (QName modelProperty : globalEmbedMapping.keySet())
|
|
{
|
|
embedMapping.put(modelProperty, globalEmbedMapping.get(modelProperty));
|
|
}
|
|
}
|
|
// Done
|
|
initialized = true;
|
|
}
|
|
|
|
/** {@inheritDoc} */
|
|
public long getExtractionTime()
|
|
{
|
|
return 1000L;
|
|
}
|
|
|
|
/**
|
|
* Checks if the mimetype is supported.
|
|
*
|
|
* @param reader the reader to check
|
|
* @throws AlfrescoRuntimeException if the mimetype is not supported
|
|
*/
|
|
protected void checkIsSupported(ContentReader reader)
|
|
{
|
|
String mimetype = reader.getMimetype();
|
|
if (!isSupported(mimetype))
|
|
{
|
|
throw new AlfrescoRuntimeException(
|
|
"Metadata extracter does not support mimetype: \n" +
|
|
" reader: " + reader + "\n" +
|
|
" supported: " + supportedMimetypes + "\n" +
|
|
" extracter: " + this);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Checks if embedding for the mimetype is supported.
|
|
*
|
|
* @param writer the writer to check
|
|
* @throws AlfrescoRuntimeException if embedding for the mimetype is not supported
|
|
*/
|
|
protected void checkIsEmbedSupported(ContentWriter writer)
|
|
{
|
|
String mimetype = writer.getMimetype();
|
|
if (!isSupported(mimetype))
|
|
{
|
|
throw new AlfrescoRuntimeException(
|
|
"Metadata extracter does not support embedding mimetype: \n" +
|
|
" writer: " + writer + "\n" +
|
|
" supported: " + supportedEmbedMimetypes + "\n" +
|
|
" extracter: " + this);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public final Map<QName, Serializable> extract(ContentReader reader, Map<QName, Serializable> destination)
|
|
{
|
|
return extract(reader, this.overwritePolicy, destination, this.mapping);
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public final Map<QName, Serializable> extract(
|
|
ContentReader reader,
|
|
OverwritePolicy overwritePolicy,
|
|
Map<QName, Serializable> destination)
|
|
{
|
|
return extract(reader, overwritePolicy, destination, this.mapping);
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public Map<QName, Serializable> extract(
|
|
ContentReader reader,
|
|
OverwritePolicy overwritePolicy,
|
|
Map<QName, Serializable> destination,
|
|
Map<String, Set<QName>> mapping)
|
|
{
|
|
// Done
|
|
if (logger.isDebugEnabled())
|
|
{
|
|
logger.debug("Starting metadata extraction: \n" +
|
|
" reader: " + reader + "\n" +
|
|
" extracter: " + this);
|
|
}
|
|
|
|
if (!initialized)
|
|
{
|
|
throw new AlfrescoRuntimeException(
|
|
"Metadata extracter not initialized.\n" +
|
|
" Call the 'register' method on: " + this + "\n" +
|
|
" Implementations of the 'init' method must call the base implementation.");
|
|
}
|
|
// check the reliability
|
|
checkIsSupported(reader);
|
|
|
|
Map<QName, Serializable> changedProperties = null;
|
|
try
|
|
{
|
|
Map<String, Serializable> rawMetadata = null;
|
|
// Check that the content has some meat
|
|
if (reader.getSize() > 0 && reader.exists())
|
|
{
|
|
rawMetadata = extractRaw(reader, getLimits(reader.getMimetype()));
|
|
}
|
|
else
|
|
{
|
|
rawMetadata = new HashMap<String, Serializable>(1);
|
|
}
|
|
// Convert to system properties (standalone)
|
|
Map<QName, Serializable> systemProperties = mapRawToSystem(rawMetadata);
|
|
// Convert the properties according to the dictionary types
|
|
systemProperties = convertSystemPropertyValues(systemProperties);
|
|
// Last chance to filter the system properties map before applying them
|
|
filterSystemProperties(systemProperties, destination);
|
|
// Now use the proper overwrite policy
|
|
changedProperties = overwritePolicy.applyProperties(systemProperties, destination);
|
|
|
|
if(logger.isDebugEnabled())
|
|
{
|
|
logger.debug("Extracted Metadata from " + reader + "\n Found: " +
|
|
rawMetadata + "\n Mapped and Accepted: " + changedProperties);
|
|
}
|
|
}
|
|
catch (Throwable e)
|
|
{
|
|
// Ask Tika to detect the document, and report back on if
|
|
// the current mime type is plausible
|
|
String typeErrorMessage = null;
|
|
String differentType = null;
|
|
if(mimetypeService != null)
|
|
{
|
|
differentType = mimetypeService.getMimetypeIfNotMatches(reader.getReader());
|
|
}
|
|
else
|
|
{
|
|
logger.info("Unable to verify mimetype of " + reader.getReader() +
|
|
" as no MimetypeService available to " + getClass().getName());
|
|
}
|
|
if(differentType != null)
|
|
{
|
|
typeErrorMessage = "\n" +
|
|
" claimed mime type: " + reader.getMimetype() + "\n" +
|
|
" detected mime type: " + differentType;
|
|
}
|
|
|
|
if (logger.isDebugEnabled())
|
|
{
|
|
logger.debug(
|
|
"Metadata extraction failed: \n" +
|
|
" Extracter: " + this + "\n" +
|
|
" Content: " + reader +
|
|
typeErrorMessage,
|
|
e);
|
|
}
|
|
else
|
|
{
|
|
logger.warn(
|
|
"Metadata extraction failed (turn on DEBUG for full error): \n" +
|
|
" Extracter: " + this + "\n" +
|
|
" Content: " + reader + "\n" +
|
|
" Failure: " + e.getMessage() +
|
|
typeErrorMessage);
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
// check that the reader was closed (if used)
|
|
if (reader.isChannelOpen())
|
|
{
|
|
logger.error("Content reader not closed by metadata extracter: \n" +
|
|
" reader: " + reader + "\n" +
|
|
" extracter: " + this);
|
|
}
|
|
// Make sure that we have something to return
|
|
if (changedProperties == null)
|
|
{
|
|
changedProperties = new HashMap<QName, Serializable>(0);
|
|
}
|
|
}
|
|
|
|
// Done
|
|
if (logger.isDebugEnabled())
|
|
{
|
|
logger.debug("Completed metadata extraction: \n" +
|
|
" reader: " + reader + "\n" +
|
|
" extracter: " + this + "\n" +
|
|
" changed: " + changedProperties);
|
|
}
|
|
return changedProperties;
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public final void embed(
|
|
Map<QName, Serializable> properties,
|
|
ContentReader reader,
|
|
ContentWriter writer)
|
|
{
|
|
// Done
|
|
if (logger.isDebugEnabled())
|
|
{
|
|
logger.debug("Starting metadata embedding: \n" +
|
|
" reader: " + reader + "\n" +
|
|
" writer: " + writer + "\n" +
|
|
" extracter: " + this);
|
|
}
|
|
|
|
if (!initialized)
|
|
{
|
|
throw new AlfrescoRuntimeException(
|
|
"Metadata extracter not initialized.\n" +
|
|
" Call the 'register' method on: " + this + "\n" +
|
|
" Implementations of the 'init' method must call the base implementation.");
|
|
}
|
|
// check the reliability
|
|
checkIsEmbedSupported(writer);
|
|
|
|
try
|
|
{
|
|
embedInternal(mapSystemToRaw(properties), reader, writer);
|
|
if(logger.isDebugEnabled())
|
|
{
|
|
logger.debug("Embedded Metadata into " + writer);
|
|
}
|
|
}
|
|
catch (Throwable e)
|
|
{
|
|
// Ask Tika to detect the document, and report back on if
|
|
// the current mime type is plausible
|
|
String typeErrorMessage = "";
|
|
String differentType = null;
|
|
if(mimetypeService != null)
|
|
{
|
|
try
|
|
{
|
|
differentType = mimetypeService.getMimetypeIfNotMatches(writer.getReader());
|
|
}
|
|
catch (ContentIOException cioe)
|
|
{
|
|
// Embedding failed and writer is empty
|
|
}
|
|
}
|
|
else
|
|
{
|
|
logger.info("Unable to verify mimetype of " + writer.getReader() +
|
|
" as no MimetypeService available to " + getClass().getName());
|
|
}
|
|
if(differentType != null)
|
|
{
|
|
typeErrorMessage = "\n" +
|
|
" claimed mime type: " + writer.getMimetype() + "\n" +
|
|
" detected mime type: " + differentType;
|
|
}
|
|
|
|
if (logger.isDebugEnabled())
|
|
{
|
|
logger.debug(
|
|
"Metadata embedding failed: \n" +
|
|
" Extracter: " + this + "\n" +
|
|
" Content: " + writer +
|
|
typeErrorMessage,
|
|
e);
|
|
}
|
|
else
|
|
{
|
|
logger.error(
|
|
"Metadata embedding failed (turn on DEBUG for full error): \n" +
|
|
" Extracter: " + this + "\n" +
|
|
" Content: " + writer + "\n" +
|
|
" Failure: " + e.getMessage() +
|
|
typeErrorMessage);
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
// check that the writer was closed (if used)
|
|
if (writer.isChannelOpen())
|
|
{
|
|
logger.error("Content writer not closed by metadata extracter: \n" +
|
|
" writer: " + writer + "\n" +
|
|
" extracter: " + this);
|
|
}
|
|
}
|
|
|
|
// Done
|
|
if (logger.isDebugEnabled())
|
|
{
|
|
logger.debug("Completed metadata embedding: \n" +
|
|
" writer: " + writer + "\n" +
|
|
" extracter: " + this);
|
|
}
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param rawMetadata Metadata keyed by document properties
|
|
* @return Returns the metadata keyed by the system properties
|
|
*/
|
|
private Map<QName, Serializable> mapRawToSystem(Map<String, Serializable> rawMetadata)
|
|
{
|
|
Map<QName, Serializable> systemProperties = new HashMap<QName, Serializable>(rawMetadata.size() * 2 + 1);
|
|
for (Map.Entry<String, Serializable> entry : rawMetadata.entrySet())
|
|
{
|
|
String documentKey = entry.getKey();
|
|
// Check if there is a mapping for this
|
|
if (!mapping.containsKey(documentKey))
|
|
{
|
|
// No mapping - ignore
|
|
continue;
|
|
}
|
|
Serializable documentValue = entry.getValue();
|
|
Set<QName> systemQNames = mapping.get(documentKey);
|
|
for (QName systemQName : systemQNames)
|
|
{
|
|
systemProperties.put(systemQName, documentValue);
|
|
}
|
|
}
|
|
// Done
|
|
if (logger.isDebugEnabled())
|
|
{
|
|
logger.debug(
|
|
"Converted extracted raw values to system values: \n" +
|
|
" Raw Properties: " + rawMetadata + "\n" +
|
|
" System Properties: " + systemProperties);
|
|
}
|
|
return systemProperties;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param systemMetadata Metadata keyed by system properties
|
|
* @return Returns the metadata keyed by the content file metadata properties
|
|
*/
|
|
private Map<String, Serializable> mapSystemToRaw(Map<QName, Serializable> systemMetadata)
|
|
{
|
|
Map<String, Serializable> metadataProperties = new HashMap<String, Serializable>(systemMetadata.size() * 2 + 1);
|
|
for (Map.Entry<QName, Serializable> entry : systemMetadata.entrySet())
|
|
{
|
|
QName modelProperty = entry.getKey();
|
|
// Check if there is a mapping for this
|
|
if (!embedMapping.containsKey(modelProperty))
|
|
{
|
|
// No mapping - ignore
|
|
continue;
|
|
}
|
|
Serializable documentValue = entry.getValue();
|
|
Set<String> metadataKeys = embedMapping.get(modelProperty);
|
|
for (String metadataKey : metadataKeys)
|
|
{
|
|
metadataProperties.put(metadataKey, documentValue);
|
|
}
|
|
}
|
|
// Done
|
|
if (logger.isDebugEnabled())
|
|
{
|
|
logger.debug(
|
|
"Converted system model values to metadata values: \n" +
|
|
" System Properties: " + systemMetadata + "\n" +
|
|
" Metadata Properties: " + metadataProperties);
|
|
}
|
|
return metadataProperties;
|
|
}
|
|
|
|
/**
|
|
* Filters the system properties that are going to be applied. Gives the metadata extracter an
|
|
* opportunity to remove properties that may not be appropriate in a given context.
|
|
*
|
|
* @param systemProperties map of system properties to be applied
|
|
* @param targetProperties map of target properties, may be used to provide to the context requried
|
|
*/
|
|
protected void filterSystemProperties(Map<QName, Serializable> systemProperties, Map<QName, Serializable> targetProperties)
|
|
{
|
|
// Default implementation does nothing
|
|
}
|
|
|
|
/**
|
|
* Converts all values according to their dictionary-defined type. This uses the
|
|
* {@link #setFailOnTypeConversion(boolean) failOnTypeConversion flag} to determine how failures
|
|
* are handled i.e. if values fail to convert, the process may discard the property.
|
|
*
|
|
* @param systemProperties the values keyed to system property names
|
|
* @return Returns a modified map of properties that have been converted.
|
|
*/
|
|
@SuppressWarnings("unchecked")
|
|
private Map<QName, Serializable> convertSystemPropertyValues(Map<QName, Serializable> systemProperties)
|
|
{
|
|
Map<QName, Serializable> convertedProperties = new HashMap<QName, Serializable>(systemProperties.size() + 7);
|
|
for (Map.Entry<QName, Serializable> entry : systemProperties.entrySet())
|
|
{
|
|
QName propertyQName = entry.getKey();
|
|
Serializable propertyValue = entry.getValue();
|
|
// Get the property definition
|
|
PropertyDefinition propertyDef = (dictionaryService == null) ? null : dictionaryService.getProperty(propertyQName);
|
|
if (propertyDef == null)
|
|
{
|
|
// There is nothing in the DD about this so just transfer it
|
|
convertedProperties.put(propertyQName, propertyValue);
|
|
continue;
|
|
}
|
|
// It is in the DD, so attempt the conversion
|
|
DataTypeDefinition propertyTypeDef = propertyDef.getDataType();
|
|
Serializable convertedPropertyValue = null;
|
|
|
|
try
|
|
{
|
|
// Attempt to make any date conversions
|
|
if (propertyTypeDef.getName().equals(DataTypeDefinition.DATE) || propertyTypeDef.getName().equals(DataTypeDefinition.DATETIME))
|
|
{
|
|
if (propertyValue instanceof Date)
|
|
{
|
|
convertedPropertyValue = propertyValue;
|
|
}
|
|
else if (propertyValue instanceof Collection)
|
|
{
|
|
convertedPropertyValue = (Serializable) makeDates((Collection<String>) propertyValue);
|
|
}
|
|
else if (propertyValue instanceof String)
|
|
{
|
|
convertedPropertyValue = makeDate((String) propertyValue);
|
|
}
|
|
else if (propertyValue == null)
|
|
{
|
|
convertedPropertyValue = null;
|
|
}
|
|
else
|
|
{
|
|
if (logger.isWarnEnabled())
|
|
{
|
|
StringBuilder mesg = new StringBuilder();
|
|
mesg.append("Unable to convert Date property: ").append(propertyQName)
|
|
.append(", value: ").append(propertyValue).append(", type: ").append(propertyTypeDef.getName());
|
|
logger.warn(mesg.toString());
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (propertyValue instanceof Collection)
|
|
{
|
|
convertedPropertyValue = (Serializable) DefaultTypeConverter.INSTANCE.convert(
|
|
propertyTypeDef,
|
|
(Collection<?>) propertyValue);
|
|
}
|
|
else if (propertyValue instanceof Object[])
|
|
{
|
|
convertedPropertyValue = (Serializable) DefaultTypeConverter.INSTANCE.convert(
|
|
propertyTypeDef,
|
|
(Object[]) propertyValue);
|
|
}
|
|
else
|
|
{
|
|
convertedPropertyValue = (Serializable) DefaultTypeConverter.INSTANCE.convert(
|
|
propertyTypeDef,
|
|
propertyValue);
|
|
}
|
|
}
|
|
convertedProperties.put(propertyQName, convertedPropertyValue);
|
|
}
|
|
catch (TypeConversionException e)
|
|
{
|
|
logger.warn(
|
|
"Type conversion failed during metadata extraction: \n" +
|
|
" Failure: " + e.getMessage() + "\n" +
|
|
" Type: " + propertyTypeDef + "\n" +
|
|
" Value: " + propertyValue);
|
|
// Do we just absorb this or is it a problem?
|
|
if (failOnTypeConversion)
|
|
{
|
|
throw AlfrescoRuntimeException.create(
|
|
e,
|
|
ERR_TYPE_CONVERSION,
|
|
this,
|
|
propertyQName,
|
|
propertyTypeDef.getName(),
|
|
propertyValue);
|
|
}
|
|
}
|
|
catch (MalformedNodeRefException e)
|
|
{
|
|
if (propertyQName.equals(ContentModel.PROP_TAGS))
|
|
{
|
|
if (enableStringTagging)
|
|
{
|
|
// We must want to map tag string values instead of nodeRefs
|
|
// ContentMetadataExtracter will take care of tagging by string
|
|
ArrayList<Object> list = new ArrayList<Object>(1);
|
|
for (Object value : (Object[]) propertyValue)
|
|
{
|
|
list.add(value);
|
|
}
|
|
convertedProperties.put(propertyQName, list);
|
|
}
|
|
else
|
|
{
|
|
if (logger.isInfoEnabled())
|
|
{
|
|
logger.info("enableStringTagging is false and could not convert " +
|
|
propertyQName.toString() + ": " + e.getMessage());
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (failOnTypeConversion)
|
|
{
|
|
throw e;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// Done
|
|
return convertedProperties;
|
|
}
|
|
|
|
/**
|
|
* Convert a collection of date <tt>String</tt> to <tt>Date</tt> objects
|
|
*/
|
|
private Collection<Date> makeDates(Collection<String> dateStrs)
|
|
{
|
|
List<Date> dates = new ArrayList<Date>(dateStrs.size());
|
|
for (String dateStr : dateStrs)
|
|
{
|
|
Date date = makeDate(dateStr);
|
|
dates.add(date);
|
|
}
|
|
return dates;
|
|
}
|
|
|
|
/**
|
|
* Convert a date <tt>String</tt> to a <tt>Date</tt> object
|
|
*/
|
|
protected Date makeDate(String dateStr)
|
|
{
|
|
if (dateStr == null || dateStr.length() == 0)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
Date date = null;
|
|
try
|
|
{
|
|
date = DefaultTypeConverter.INSTANCE.convert(Date.class, dateStr);
|
|
}
|
|
catch (TypeConversionException e)
|
|
{
|
|
// Try one of the other formats
|
|
if (this.supportedDateFormatters != null)
|
|
{
|
|
// Remove text such as " (PDT)" which cannot be parsed.
|
|
String dateStr2 = (dateStr == null || dateStr.indexOf('(') == -1)
|
|
? dateStr : dateStr.replaceAll(" \\(.*\\)", "");
|
|
for (DateTimeFormatter supportedDateFormatter: supportedDateFormatters)
|
|
{
|
|
// supported DateFormats were defined
|
|
/**
|
|
* Regional date format
|
|
*/
|
|
try
|
|
{
|
|
DateTime dateTime = supportedDateFormatter.parseDateTime(dateStr2);
|
|
if (dateTime.getCenturyOfEra() > 0)
|
|
{
|
|
return dateTime.toDate();
|
|
}
|
|
}
|
|
catch (IllegalArgumentException e1)
|
|
{
|
|
// Didn't work
|
|
}
|
|
|
|
/**
|
|
* Date format can be locale specific - make sure English format always works
|
|
*/
|
|
/*
|
|
* TODO MER 25 May 2010 - Added this as a quick fix for IMAP date parsing which is always
|
|
* English regardless of Locale. Some more thought and/or code is required to configure
|
|
* the relationship between properties, format and locale.
|
|
*/
|
|
try
|
|
{
|
|
DateTime dateTime = supportedDateFormatter.withLocale(Locale.US).parseDateTime(dateStr2);
|
|
if (dateTime.getCenturyOfEra() > 0)
|
|
{
|
|
return dateTime.toDate();
|
|
}
|
|
}
|
|
catch (IllegalArgumentException e1)
|
|
{
|
|
// Didn't work
|
|
}
|
|
}
|
|
}
|
|
|
|
if (date == null)
|
|
{
|
|
// Still no luck
|
|
throw new TypeConversionException("Unable to convert string to date: " + dateStr);
|
|
}
|
|
}
|
|
return date;
|
|
}
|
|
|
|
/**
|
|
* Adds a value to the map, conserving null values. Values are converted to null if:
|
|
* <ul>
|
|
* <li>it is an empty string value after trimming</li>
|
|
* <li>it is an empty collection</li>
|
|
* <li>it is an empty array</li>
|
|
* </ul>
|
|
* String values are trimmed before being put into the map.
|
|
* Otherwise, it is up to the extracter to ensure that the value is a <tt>Serializable</tt>.
|
|
* It is not appropriate to implicitly convert values in order to make them <tt>Serializable</tt>
|
|
* - the best conversion method will depend on the value's specific meaning.
|
|
*
|
|
* @param key the destination key
|
|
* @param value the serializable value
|
|
* @param destination the map to put values into
|
|
* @return Returns <tt>true</tt> if set, otherwise <tt>false</tt>
|
|
*/
|
|
protected boolean putRawValue(String key, Serializable value, Map<String, Serializable> destination)
|
|
{
|
|
if (value == null)
|
|
{
|
|
// Just keep this
|
|
}
|
|
else if (value instanceof String)
|
|
{
|
|
String valueStr = ((String) value).trim();
|
|
if (valueStr.length() == 0)
|
|
{
|
|
value = null;
|
|
}
|
|
else
|
|
{
|
|
if(valueStr.indexOf("\u0000") != -1)
|
|
{
|
|
valueStr = valueStr.replaceAll("\u0000", "");
|
|
}
|
|
// Keep the trimmed value
|
|
value = valueStr;
|
|
}
|
|
}
|
|
else if (value instanceof Collection)
|
|
{
|
|
Collection<?> valueCollection = (Collection<?>) value;
|
|
if (valueCollection.isEmpty())
|
|
{
|
|
value = null;
|
|
}
|
|
}
|
|
else if (value.getClass().isArray())
|
|
{
|
|
if (Array.getLength(value) == 0)
|
|
{
|
|
value = null;
|
|
}
|
|
}
|
|
// It passed all the tests
|
|
destination.put(key, value);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Helper method to fetch a clean map into which raw values can be dumped.
|
|
*
|
|
* @return Returns an empty map
|
|
*/
|
|
protected final Map<String, Serializable> newRawMap()
|
|
{
|
|
return new HashMap<String, Serializable>(17);
|
|
}
|
|
|
|
/**
|
|
* This method provides a <i>best guess</i> of where to store the values extracted
|
|
* from the documents. The list of properties mapped by default need <b>not</b>
|
|
* include all properties extracted from the document; just the obvious set of mappings
|
|
* need be supplied.
|
|
* Implementations must either provide the default mapping properties in the expected
|
|
* location or override the method to provide the default mapping.
|
|
* <p>
|
|
* The default implementation looks for the default mapping file in the location
|
|
* given by the class name and <i>.properties</i>. If the extracter's class is
|
|
* <b>x.y.z.MyExtracter</b> then the default properties will be picked up at
|
|
* <b>classpath:/alfresco/metadata/MyExtracter.properties</b>.
|
|
* The previous location of <b>classpath:/x/y/z/MyExtracter.properties</b> is
|
|
* still supported but may be removed in a future release.
|
|
* Inner classes are supported, but the '$' in the class name is replaced with '-', so
|
|
* default properties for <b>x.y.z.MyStuff$MyExtracter</b> will be located using
|
|
* <b>classpath:/alfresco/metadata/MyStuff-MyExtracter.properties</b>.
|
|
* <p>
|
|
* The default mapping implementation should include thorough Javadocs so that the
|
|
* system administrators can accurately determine how to best enhance or override the
|
|
* default mapping.
|
|
* <p>
|
|
* If the default mapping is declared in a properties file other than the one named after
|
|
* the class, then the {@link #readMappingProperties(String)} method can be used to quickly
|
|
* generate the return value:
|
|
* <pre><code>
|
|
* protected Map<<String, Set<QName>> getDefaultMapping()
|
|
* {
|
|
* return readMappingProperties(DEFAULT_MAPPING);
|
|
* }
|
|
* </code></pre>
|
|
* The map can also be created in code either statically or during the call.
|
|
*
|
|
* @return Returns the default, static mapping. It may not be null.
|
|
*
|
|
* @see #setInheritDefaultMapping(boolean inherit)
|
|
*/
|
|
protected Map<String, Set<QName>> getDefaultMapping()
|
|
{
|
|
AlfrescoRuntimeException metadataLocationReadException = null;
|
|
try
|
|
{
|
|
// Can't use getSimpleName here because we lose inner class $ processing
|
|
String className = this.getClass().getName();
|
|
String shortClassName = className.split("\\.")[className.split("\\.").length - 1];
|
|
// Replace $
|
|
shortClassName = shortClassName.replace('$', '-');
|
|
// Append .properties
|
|
String metadataPropertiesUrl = "alfresco/metadata/" + shortClassName + ".properties";
|
|
// Attempt to load the properties
|
|
return readMappingProperties(metadataPropertiesUrl);
|
|
}
|
|
catch (AlfrescoRuntimeException e)
|
|
{
|
|
// We'll save this to throw at someone later
|
|
metadataLocationReadException = e;
|
|
}
|
|
// Try package location
|
|
try
|
|
{
|
|
String canonicalClassName = this.getClass().getName();
|
|
// Replace $
|
|
canonicalClassName = canonicalClassName.replace('$', '-');
|
|
// Replace .
|
|
canonicalClassName = canonicalClassName.replace('.', '/');
|
|
// Append .properties
|
|
String packagePropertiesUrl = canonicalClassName + ".properties";
|
|
// Attempt to load the properties
|
|
return readMappingProperties(packagePropertiesUrl);
|
|
}
|
|
catch (AlfrescoRuntimeException e)
|
|
{
|
|
// Not found in either location, but we want to throw the error for the new metadata location
|
|
throw metadataLocationReadException;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This method provides a <i>best guess</i> of what model properties should be embedded
|
|
* in content. The list of properties mapped by default need <b>not</b>
|
|
* include all properties to be embedded in the document; just the obvious set of mappings
|
|
* need be supplied.
|
|
* Implementations must either provide the default mapping properties in the expected
|
|
* location or override the method to provide the default mapping.
|
|
* <p>
|
|
* The default implementation looks for the default mapping file in the location
|
|
* given by the class name and <i>.embed.properties</i>. If the extracter's class is
|
|
* <b>x.y.z.MyExtracter</b> then the default properties will be picked up at
|
|
* <b>classpath:/x/y/z/MyExtracter.embed.properties</b>.
|
|
* Inner classes are supported, but the '$' in the class name is replaced with '-', so
|
|
* default properties for <b>x.y.z.MyStuff$MyExtracter</b> will be located using
|
|
* <b>x.y.z.MyStuff-MyExtracter.embed.properties</b>.
|
|
* <p>
|
|
* The default mapping implementation should include thorough Javadocs so that the
|
|
* system administrators can accurately determine how to best enhance or override the
|
|
* default mapping.
|
|
* <p>
|
|
* If the default mapping is declared in a properties file other than the one named after
|
|
* the class, then the {@link #readEmbedMappingProperties(String)} method can be used to quickly
|
|
* generate the return value:
|
|
* <pre><code>
|
|
* protected Map<<String, Set<QName>> getDefaultMapping()
|
|
* {
|
|
* return readEmbedMappingProperties(DEFAULT_MAPPING);
|
|
* }
|
|
* </code></pre>
|
|
* The map can also be created in code either statically or during the call.
|
|
* <p>
|
|
* If no embed mapping properties file is found a reverse of the extract
|
|
* mapping in {@link #getDefaultMapping()} will be assumed with the first QName in each
|
|
* value used as the key for this mapping and a last win approach for duplicates.
|
|
*
|
|
* @return Returns the default, static embed mapping. It may not be null.
|
|
*
|
|
* @see #setInheritDefaultMapping(boolean inherit)
|
|
*/
|
|
protected Map<QName, Set<String>> getDefaultEmbedMapping()
|
|
{
|
|
Map<QName, Set<String>> embedMapping = null;
|
|
String metadataPropertiesUrl = null;
|
|
try
|
|
{
|
|
// Can't use getSimpleName here because we lose inner class $ processing
|
|
String className = this.getClass().getName();
|
|
String shortClassName = className.split("\\.")[className.split("\\.").length - 1];
|
|
// Replace $
|
|
shortClassName = shortClassName.replace('$', '-');
|
|
// Append .properties
|
|
metadataPropertiesUrl = "alfresco/metadata/" + shortClassName + ".embed.properties";
|
|
// Attempt to load the properties
|
|
embedMapping = readEmbedMappingProperties(metadataPropertiesUrl);
|
|
}
|
|
catch (AlfrescoRuntimeException e)
|
|
{
|
|
// No embed mapping found at default location
|
|
}
|
|
// Try package location
|
|
try
|
|
{
|
|
String canonicalClassName = this.getClass().getName();
|
|
// Replace $
|
|
canonicalClassName = canonicalClassName.replace('$', '-');
|
|
// Replace .
|
|
canonicalClassName = canonicalClassName.replace('.', '/');
|
|
// Append .properties
|
|
String packagePropertiesUrl = canonicalClassName + ".embed.properties";
|
|
// Attempt to load the properties
|
|
embedMapping = readEmbedMappingProperties(packagePropertiesUrl);
|
|
}
|
|
catch (AlfrescoRuntimeException e)
|
|
{
|
|
// No embed mapping found at legacy location
|
|
}
|
|
if (embedMapping == null)
|
|
{
|
|
if (logger.isDebugEnabled())
|
|
{
|
|
logger.debug("No explicit embed mapping properties found at: " + metadataPropertiesUrl + ", assuming reverse of extract mapping");
|
|
}
|
|
Map<String, Set<QName>> extractMapping = this.mapping;
|
|
if (extractMapping == null || extractMapping.size() == 0)
|
|
{
|
|
extractMapping = getDefaultMapping();
|
|
}
|
|
embedMapping = new HashMap<QName, Set<String>>(extractMapping.size());
|
|
for (String metadataKey : extractMapping.keySet())
|
|
{
|
|
if (extractMapping.get(metadataKey) != null && extractMapping.get(metadataKey).size() > 0)
|
|
{
|
|
QName modelProperty = extractMapping.get(metadataKey).iterator().next();
|
|
Set<String> metadataKeys = embedMapping.get(modelProperty);
|
|
if (metadataKeys == null)
|
|
{
|
|
metadataKeys = new HashSet<String>(1);
|
|
embedMapping.put(modelProperty, metadataKeys);
|
|
}
|
|
metadataKeys.add(metadataKey);
|
|
if (logger.isTraceEnabled())
|
|
{
|
|
logger.trace("Added mapping from " + modelProperty + " to " + metadataKeys.toString());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return embedMapping;
|
|
}
|
|
|
|
/**
|
|
* Gets the metadata extracter limits for the given mimetype.
|
|
* <p>
|
|
* A specific match for the given mimetype is tried first and
|
|
* if none is found a wildcard of "*" is tried.
|
|
*
|
|
* @param mimetype
|
|
* @return the found limits or null
|
|
*/
|
|
protected MetadataExtracterLimits getLimits(String mimetype)
|
|
{
|
|
if (mimetypeLimits == null)
|
|
{
|
|
return null;
|
|
}
|
|
MetadataExtracterLimits limits = null;
|
|
limits = mimetypeLimits.get(mimetype);
|
|
if (limits == null)
|
|
{
|
|
limits = mimetypeLimits.get("*");
|
|
}
|
|
return limits;
|
|
}
|
|
|
|
/**
|
|
* <code>Callable</code> wrapper for the
|
|
* {@link AbstractMappingMetadataExtracter#extractRaw(ContentReader)} method
|
|
* to handle timeouts.
|
|
*/
|
|
private class ExtractRawCallable implements Callable<Map<String,Serializable>>
|
|
{
|
|
private ContentReader contentReader;
|
|
|
|
public ExtractRawCallable(ContentReader reader)
|
|
{
|
|
this.contentReader = reader;
|
|
}
|
|
|
|
@Override
|
|
public Map<String, Serializable> call() throws Exception
|
|
{
|
|
try
|
|
{
|
|
return extractRaw(contentReader);
|
|
}
|
|
catch (Throwable e)
|
|
{
|
|
throw new ExtractRawCallableException(e);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Exception wrapper to handle any {@link Throwable} from
|
|
* {@link AbstractMappingMetadataExtracter#extractRaw(ContentReader)}
|
|
*/
|
|
private class ExtractRawCallableException extends Exception
|
|
{
|
|
private static final long serialVersionUID = 1813857091767321624L;
|
|
public ExtractRawCallableException(Throwable cause)
|
|
{
|
|
super(cause);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Calls the {@link AbstractMappingMetadataExtracter#extractRaw(ContentReader)} method
|
|
* using the given limits.
|
|
* <p>
|
|
* Currently the only limit supported by {@link MetadataExtracterLimits} is a timeout
|
|
* so this method uses {@link AbstractMappingMetadataExtracter#getExecutorService()}
|
|
* to execute a {@link FutureTask} with any timeout defined.
|
|
* <p>
|
|
* If no timeout limit is defined or is unlimited (-1),
|
|
* the <code>extractRaw</code> method is called directly.
|
|
*
|
|
* @param reader the document to extract the values from. This stream provided by
|
|
* the reader must be closed if accessed directly.
|
|
* @param limits the limits to impose on the extraction
|
|
* @return Returns a map of document property values keyed by property name.
|
|
* @throws All exception conditions can be handled.
|
|
*/
|
|
private Map<String, Serializable> extractRaw(
|
|
ContentReader reader, MetadataExtracterLimits limits) throws Throwable
|
|
{
|
|
if (limits == null || limits.getTimeoutMs() == -1)
|
|
{
|
|
return extractRaw(reader);
|
|
}
|
|
FutureTask<Map<String, Serializable>> task = null;
|
|
try
|
|
{
|
|
task = new FutureTask<Map<String,Serializable>>(new ExtractRawCallable(reader));
|
|
getExecutorService().execute(task);
|
|
return task.get(limits.getTimeoutMs(), TimeUnit.MILLISECONDS);
|
|
}
|
|
catch (TimeoutException e)
|
|
{
|
|
task.cancel(true);
|
|
if (reader.isChannelOpen())
|
|
{
|
|
reader.getReadableChannel().close();
|
|
}
|
|
throw e;
|
|
}
|
|
catch (InterruptedException e)
|
|
{
|
|
// We were asked to stop
|
|
task.cancel(true);
|
|
return null;
|
|
}
|
|
catch (ExecutionException e)
|
|
{
|
|
// Unwrap our cause and throw that
|
|
Throwable cause = e.getCause();
|
|
if (cause != null && cause instanceof ExtractRawCallableException)
|
|
{
|
|
cause = ((ExtractRawCallableException) cause).getCause();
|
|
}
|
|
throw cause;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Override to provide the raw extracted metadata values. An extracter should extract
|
|
* as many of the available properties as is realistically possible. Even if the
|
|
* {@link #getDefaultMapping() default mapping} doesn't handle all properties, it is
|
|
* possible for each instance of the extracter to be configured differently and more or
|
|
* less of the properties may be used in different installations.
|
|
* <p>
|
|
* Raw values must not be trimmed or removed for any reason. Null values and empty
|
|
* strings are
|
|
* <ul>
|
|
* <li><b>Null:</b> Removed</li>
|
|
* <li><b>Empty String:</b> Passed to the {@link OverwritePolicy}</li>
|
|
* <li><b>Non Serializable:</b> Converted to String or fails if that is not possible</li>
|
|
* </ul>
|
|
* <p>
|
|
* Properties extracted and their meanings and types should be thoroughly described in
|
|
* the class-level javadocs of the extracter implementation, for example:
|
|
* <pre>
|
|
* <b>editor:</b> - the document editor --> cm:author
|
|
* <b>title:</b> - the document title --> cm:title
|
|
* <b>user1:</b> - the document summary
|
|
* <b>user2:</b> - the document description --> cm:description
|
|
* <b>user3:</b> -
|
|
* <b>user4:</b> -
|
|
* </pre>
|
|
*
|
|
* @param reader the document to extract the values from. This stream provided by
|
|
* the reader must be closed if accessed directly.
|
|
* @return Returns a map of document property values keyed by property name.
|
|
* @throws All exception conditions can be handled.
|
|
*
|
|
* @see #getDefaultMapping()
|
|
*/
|
|
protected abstract Map<String, Serializable> extractRaw(ContentReader reader) throws Throwable;
|
|
|
|
/**
|
|
* Override to embed metadata values. An extracter should embed
|
|
* as many of the available properties as is realistically possible. Even if the
|
|
* {@link #getDefaultEmbedMapping() default mapping} doesn't handle all properties, it is
|
|
* possible for each instance of the extracter to be configured differently and more or
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* less of the properties may be used in different installations.
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*
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|
* @param metadata the metadata keys and values to embed in the content file
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|
* @param reader the reader for the original document. This stream provided by
|
|
* the reader must be closed if accessed directly.
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|
* @param writer the writer for the document to embed the values in. This stream provided by
|
|
* the writer must be closed if accessed directly.
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* @throws All exception conditions can be handled.
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|
*
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|
* @see #getDefaultEmbedMapping()
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|
*/
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|
protected void embedInternal(Map<String, Serializable> metadata, ContentReader reader, ContentWriter writer) throws Throwable
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|
{
|
|
// TODO make this an abstract method once more extracters support embedding
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|
}
|
|
}
|