mirror of
https://github.com/Alfresco/alfresco-community-repo.git
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cefda8c965
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@18931 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
555 lines
19 KiB
Java
555 lines
19 KiB
Java
/*
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* Copyright (C) 2005-2010 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.jcr.importer;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.InputStream;
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import java.io.Serializable;
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import java.util.List;
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import java.util.Stack;
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import javax.jcr.InvalidSerializedDataException;
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import javax.jcr.PropertyType;
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import javax.jcr.RepositoryException;
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import org.alfresco.jcr.dictionary.DataTypeMap;
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import org.alfresco.jcr.dictionary.JCRNamespace;
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import org.alfresco.jcr.exporter.JCRSystemXMLExporter;
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import org.alfresco.jcr.item.property.JCRMixinTypesProperty;
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import org.alfresco.jcr.item.property.JCRPrimaryTypeProperty;
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import org.alfresco.jcr.item.property.JCRUUIDProperty;
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import org.alfresco.jcr.session.SessionImpl;
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import org.alfresco.repo.importer.ImportContentHandler;
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import org.alfresco.repo.importer.Importer;
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import org.alfresco.repo.importer.view.ElementContext;
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import org.alfresco.repo.importer.view.NodeContext;
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import org.alfresco.repo.importer.view.ParentContext;
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import org.alfresco.service.cmr.dictionary.AspectDefinition;
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import org.alfresco.service.cmr.dictionary.DataTypeDefinition;
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import org.alfresco.service.cmr.dictionary.InvalidTypeException;
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import org.alfresco.service.cmr.dictionary.TypeDefinition;
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import org.alfresco.service.cmr.repository.NodeRef;
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import org.alfresco.service.cmr.repository.datatype.DefaultTypeConverter;
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import org.alfresco.service.cmr.view.ImporterException;
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import org.alfresco.service.namespace.NamespacePrefixResolver;
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import org.alfresco.service.namespace.QName;
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import org.springframework.extensions.surf.util.Base64;
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import org.xml.sax.Attributes;
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import org.xml.sax.Locator;
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import org.xml.sax.SAXException;
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import org.xml.sax.SAXParseException;
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/**
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* Alfresco implementation of a System View Import Content Handler
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*
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* @author David Caruana
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*/
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public class JCRSystemXMLHandler implements ImportContentHandler
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{
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private Importer importer;
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private SessionImpl session;
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private NamespacePrefixResolver importResolver;
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private Stack<ElementContext> contextStack = new Stack<ElementContext>();
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/**
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* Construct
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*
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* @param session JCR Session
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* @param importResolver Namespace Resolver for the Import
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*/
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public JCRSystemXMLHandler(SessionImpl session, NamespacePrefixResolver importResolver)
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{
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this.session = session;
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this.importResolver = importResolver;
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}
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/*
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* (non-Javadoc)
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* @see org.alfresco.repo.importer.ImportContentHandler#setImporter(org.alfresco.repo.importer.Importer)
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*/
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public void setImporter(Importer importer)
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{
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this.importer = importer;
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}
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/*
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* (non-Javadoc)
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* @see org.alfresco.repo.importer.ImportContentHandler#importStream(java.lang.String)
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*/
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public InputStream importStream(String content)
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{
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File contentFile = new File(content);
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try
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{
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FileInputStream contentStream = new FileInputStream(contentFile);
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return new Base64.InputStream(contentStream, Base64.DECODE | Base64.DONT_BREAK_LINES);
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}
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catch (FileNotFoundException e)
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{
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throw new ImporterException("Failed to retrieve import input stream on temporary content file " + content);
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}
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}
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/*
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* (non-Javadoc)
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* @see org.xml.sax.ContentHandler#setDocumentLocator(org.xml.sax.Locator)
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*/
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public void setDocumentLocator(Locator locator)
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{
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// NOOP
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}
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/*
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* (non-Javadoc)
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* @see org.xml.sax.ContentHandler#startDocument()
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*/
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public void startDocument() throws SAXException
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{
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// NOOP
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}
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/*
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* (non-Javadoc)
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* @see org.xml.sax.ContentHandler#endDocument()
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*/
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public void endDocument() throws SAXException
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{
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// NOOP
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}
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/*
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* (non-Javadoc)
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* @see org.xml.sax.ContentHandler#startPrefixMapping(java.lang.String, java.lang.String)
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*/
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public void startPrefixMapping(String prefix, String uri) throws SAXException
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{
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// NOOP
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}
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/*
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* (non-Javadoc)
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* @see org.xml.sax.ContentHandler#endPrefixMapping(java.lang.String)
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*/
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public void endPrefixMapping(String prefix) throws SAXException
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{
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// NOOP
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}
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/*
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* (non-Javadoc)
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* @see org.xml.sax.ContentHandler#startElement(java.lang.String, java.lang.String, java.lang.String, org.xml.sax.Attributes)
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*/
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public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException
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{
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try
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{
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// construct qname for element
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QName elementName = QName.createQName(qName, importResolver);
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if (JCRSystemXMLExporter.NODE_QNAME.equals(elementName))
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{
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processStartNode(elementName, atts);
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}
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else if (JCRSystemXMLExporter.PROPERTY_QNAME.equals(elementName))
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{
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processStartProperty(elementName, atts);
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}
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else if (JCRSystemXMLExporter.VALUE_QNAME.equals(elementName))
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{
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processStartValue(elementName, atts);
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}
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}
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catch(Exception e)
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{
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throw new SAXException("Failed to process element " + qName, e);
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}
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}
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/**
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* Process start of Node Element
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*
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* @param elementName
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* @param atts
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* @throws InvalidSerializedDataException
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*/
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private void processStartNode(QName elementName, Attributes atts)
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throws InvalidSerializedDataException
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{
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ParentContext parentContext = null;
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if (contextStack.empty())
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{
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// create root parent context
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parentContext = new ParentContext(elementName, session.getRepositoryImpl().getServiceRegistry().getDictionaryService(), importer);
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}
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else
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{
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NodeContext parentNode = (NodeContext)contextStack.peek();
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// if we haven't yet imported the node before its children, do so now
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if (parentNode.getNodeRef() == null)
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{
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NodeRef nodeRef = importer.importNode(parentNode);
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parentNode.setNodeRef(nodeRef);
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}
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// create parent context
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parentContext = new ParentContext(elementName, parentNode);
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}
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// create node context
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// NOTE: we don't yet know its type (we have to wait for a property)
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NodeContext nodeContext = new NodeContext(elementName, parentContext, null);
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// establish node child name
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String name = atts.getValue(JCRSystemXMLExporter.NAME_QNAME.toPrefixString(importResolver));
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if (name == null)
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{
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throw new InvalidSerializedDataException("Mandatory sv:name attribute of element sv:node not present.");
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}
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nodeContext.setChildName(name);
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// record new node
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contextStack.push(nodeContext);
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}
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/**
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* Process start of Property element
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*
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* @param elementName
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* @param atts
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* @throws InvalidSerializedDataException
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*/
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private void processStartProperty(QName elementName, Attributes atts)
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throws InvalidSerializedDataException
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{
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// establish correct context
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ElementContext context = contextStack.peek();
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if (!(context instanceof NodeContext))
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{
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throw new InvalidSerializedDataException("Element " + elementName + " not expected.");
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}
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NodeContext parentNode = (NodeContext)context;
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// establish property name
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String name = atts.getValue(JCRSystemXMLExporter.NAME_QNAME.toPrefixString(importResolver));
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if (name == null)
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{
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throw new InvalidSerializedDataException("Mandatory sv:name attribute of element sv:node not present.");
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}
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QName propertyName = QName.createQName(name, importResolver);
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// establish property type and validate property type
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QName dataType = null;
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String type = atts.getValue(JCRSystemXMLExporter.TYPE_QNAME.toPrefixString(importResolver));
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if (type == null)
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{
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throw new InvalidSerializedDataException("Mandatory sv:type attribute of element sv:node not present.");
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}
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try
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{
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dataType = DataTypeMap.convertPropertyTypeToDataType(PropertyType.valueFromName(type));
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}
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catch(IllegalArgumentException e)
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{
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throw new ImporterException("Type " + type + " is not known for property " + name);
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}
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// construct property context
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PropertyContext propertyContext = new PropertyContext(elementName, parentNode, propertyName, dataType);
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contextStack.push(propertyContext);
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}
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/**
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* Process start of Value element
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*
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* @param elementName
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* @param atts
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* @throws InvalidSerializedDataException
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*/
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private void processStartValue(QName elementName, Attributes atts)
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throws InvalidSerializedDataException
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{
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// establish correct context
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ElementContext context = contextStack.peek();
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if (!(context instanceof PropertyContext))
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{
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throw new InvalidSerializedDataException("Element " + elementName + " not expected.");
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}
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PropertyContext property = (PropertyContext)context;
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property.startValue();
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ValueContext value = new ValueContext(elementName, property);
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contextStack.push(value);
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}
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/*
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* (non-Javadoc)
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* @see org.xml.sax.ContentHandler#endElement(java.lang.String, java.lang.String, java.lang.String)
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*/
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public void endElement(String uri, String localName, String qName) throws SAXException
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{
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try
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{
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// ensure context matches parse
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ElementContext context = (ElementContext)contextStack.peek();
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QName elementName = QName.createQName(qName, importResolver);
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if (!context.getElementName().equals(elementName))
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{
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throw new InvalidSerializedDataException("Expected element " + context.getElementName() + " but was " + elementName);
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}
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if (JCRSystemXMLExporter.NODE_QNAME.equals(elementName))
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{
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processEndNode((NodeContext)context);
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}
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else if (JCRSystemXMLExporter.PROPERTY_QNAME.equals(elementName))
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{
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processEndProperty((PropertyContext)context);
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}
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else if (JCRSystemXMLExporter.VALUE_QNAME.equals(elementName))
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{
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processEndValue((ValueContext)context);
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}
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// cleanup
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contextStack.pop();
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}
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catch(Exception e)
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{
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throw new SAXException("Failed to process element " + qName, e);
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}
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}
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/**
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* Process end of Node element
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*
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* @param node
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*/
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private void processEndNode(NodeContext node)
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{
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// import node, if not already imported (this will be the case when no child nodes exist)
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NodeRef nodeRef = node.getNodeRef();
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if (nodeRef == null)
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{
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nodeRef = node.getImporter().importNode(node);
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node.setNodeRef(nodeRef);
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}
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// signal end of node
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node.getImporter().childrenImported(nodeRef);
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}
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/**
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* Process end of Property element
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*
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* @param context
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* @throws InvalidSerializedDataException
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* @throws RepositoryException
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*/
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private void processEndProperty(PropertyContext context)
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throws InvalidSerializedDataException, RepositoryException
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{
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QName propertyName = context.getName();
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// ensure a value has been provided
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if (context.isNull())
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{
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throw new InvalidSerializedDataException("Property " + propertyName + " must have a value");
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}
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//
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// process known properties
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//
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if (JCRPrimaryTypeProperty.PROPERTY_NAME.equals(propertyName))
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{
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// apply type definition
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if (!context.isNull())
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{
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QName typeQName = QName.createQName(context.getValues().get(0).toString(), importResolver);
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TypeDefinition typeDef = context.getDictionaryService().getType(typeQName);
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if (typeDef == null)
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{
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throw new InvalidTypeException(typeQName);
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}
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// update node context
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context.getNode().setTypeDefinition(typeDef);
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}
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}
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else if (JCRMixinTypesProperty.PROPERTY_NAME.equals(propertyName))
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{
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// apply aspect definitions
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List<StringBuffer> values = context.getValues();
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for (StringBuffer value : values)
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{
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QName aspectQName = QName.createQName(value.toString(), importResolver);
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// ignore JCR specific aspects
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if (!(JCRNamespace.JCR_URI.equals(aspectQName.getNamespaceURI()) ||
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JCRNamespace.MIX_URI.equals(aspectQName.getNamespaceURI())))
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{
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AspectDefinition aspectDef = context.getDictionaryService().getAspect(aspectQName);
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if (aspectDef == null)
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{
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throw new InvalidTypeException(aspectQName);
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}
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context.getNode().addAspect(aspectDef);
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}
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}
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}
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else if (JCRUUIDProperty.PROPERTY_NAME.equals(propertyName))
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{
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StringBuffer value = context.getValues().get(0);
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context.getNode().setUUID(value.toString());
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}
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//
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// Note: ignore all other JCR specific properties
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//
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else if (JCRNamespace.JCR_URI.equals(propertyName.getNamespaceURI()))
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{
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}
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//
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// process all other properties
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//
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else
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{
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// apply the property values to the node
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NodeContext node = context.getNode();
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if (node.getTypeDefinition() == null)
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{
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throw new InvalidSerializedDataException("Node jcr:primaryType property has not been specified.");
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}
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// determine data type of value
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QName dataType = context.getType();
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DataTypeDefinition dataTypeDef = context.getDictionaryService().getDataType(dataType);
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if (dataTypeDef == null)
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{
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throw new InvalidTypeException(dataType);
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}
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node.addDatatype(propertyName, dataTypeDef);
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// determine if multi-value property
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if (context.isMultiValue())
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{
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node.addPropertyCollection(propertyName);
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}
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// add each value to the node
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List<StringBuffer> values = context.getValues();
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for (StringBuffer value : values)
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{
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// first, cast value to appropriate type (using JCR converters)
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Serializable objVal = (Serializable)session.getTypeConverter().convert(dataTypeDef, value.toString());
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String strValue = DefaultTypeConverter.INSTANCE.convert(String.class, objVal);
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node.addProperty(propertyName, strValue);
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}
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}
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}
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/**
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* Process end of value element
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*
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* @param context
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*/
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private void processEndValue(ValueContext context)
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{
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PropertyContext property = context.getProperty();
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property.endValue();
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}
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/*
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* (non-Javadoc)
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* @see org.xml.sax.ContentHandler#characters(char[], int, int)
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*/
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public void characters(char[] ch, int start, int length) throws SAXException
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{
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ElementContext context = (ElementContext)contextStack.peek();
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if (context instanceof ValueContext)
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{
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PropertyContext property = ((ValueContext)context).getProperty();
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property.appendCharacters(ch, start, length);
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}
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}
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/*
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* (non-Javadoc)
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* @see org.xml.sax.ContentHandler#ignorableWhitespace(char[], int, int)
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*/
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public void ignorableWhitespace(char[] ch, int start, int length) throws SAXException
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{
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ElementContext context = (ElementContext)contextStack.peek();
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if (context instanceof ValueContext)
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{
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PropertyContext property = ((ValueContext)context).getProperty();
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property.appendCharacters(ch, start, length);
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}
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}
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/*
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* (non-Javadoc)
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* @see org.xml.sax.ContentHandler#processingInstruction(java.lang.String, java.lang.String)
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*/
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public void processingInstruction(String target, String data) throws SAXException
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{
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}
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/*
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* (non-Javadoc)
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* @see org.xml.sax.ContentHandler#skippedEntity(java.lang.String)
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*/
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public void skippedEntity(String name) throws SAXException
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{
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}
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/*
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* (non-Javadoc)
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* @see org.xml.sax.ErrorHandler#warning(org.xml.sax.SAXParseException)
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*/
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public void warning(SAXParseException exception) throws SAXException
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{
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}
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/*
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* (non-Javadoc)
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* @see org.xml.sax.ErrorHandler#error(org.xml.sax.SAXParseException)
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*/
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public void error(SAXParseException exception) throws SAXException
|
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{
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}
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/*
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* (non-Javadoc)
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|
* @see org.xml.sax.ErrorHandler#fatalError(org.xml.sax.SAXParseException)
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*/
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public void fatalError(SAXParseException exception) throws SAXException
|
|
{
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|
}
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}
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