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Merged BRANCHES/DEV/RGAUSS/4.2-CORE-CHANGES-42861 to HEAD:

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42862: Creating new branch from HEAD
   43026: ALF-16403: Create the Basic Interfaces and Implementation for Metadata Embedders
        - Added MetadataEmbedder interface which guarantees an embed method responsible for writing the given metadata into a given content writer
        - Changed AbstractMappingMetadataExtracter to implement MetadataEmbedder
           * Added supportedEmbedMimetypes and constructor which takes it and supportedMimetypes as arguments
           * Added embedMapping
           * Added inheritDefaultEmbedMapping
           * Added isEmbeddingSupported
           * Added setEmbedMappingProperties
           * Added readEmbedMappingProperties for reading classname.embed.properties
           * Added setting of embedMapping in init method
           * Added checkIsEmbedSupported method
           * Added embed method which checks support for the mimetype, and calls embedInteral which implementations should override
           * Added mapSystemToRaw method, essentially a reverse of existing mapRawToSystem
           * Added getDefaultEmbedMapping method which assumes a reverse mapping of extract mapping if no explicit embed overrides are present
           * Added empty embedInternal method which does nothing rather than abstract method to minimize changes to existing code
        - Added notion of MetadataEmbedders to MetadataExtracterRegistry
           * Added embedderCache but use the existing extracterCache* locks
           * Added findBestEmbedders method
           * Added getEmbedder method
   43164: ALF-16404: Create a Tika Powered Metadata Embedder
        - Added constructors for setting of supported embed types to TikaPoweredMetadataExtracter
        - Changed visibility of getInputStream to protected so subclasses can use it
        - Logging level changes in AbstractMappingMetadataExtracter
   43165: ALF-16481: Create a Content Metadata Embedder Action Executer
        - Added ContentMetadataEmbedder action executer which gets an embedder for the noderef if available and sends the content reader and writer for the node ref to the embedder's embed method
        - Added embed-metadata action executer bean
        - Added embed-metadata action executer messages
   43262: ALF-16404: Create a Tika Powered Metadata Embedder
        - Updated Tika which now contains implementation of TIKA-775: Embed Capabilities
   43265: ALF-16404: Create a Tika Powered Metadata Embedder
        - Added MetadataEmbedder implementation to TikaPoweredMetadataExtracter which gets a Tika Embedder and calls its embed method


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@43268 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Ray Gauss
2012-10-31 14:33:09 +00:00
parent 2cb4640004
commit 918696927d
7 changed files with 974 additions and 16 deletions
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166
source/java/org/alfresco/repo/action/executer/ContentMetadataEmbedder.java Normal file
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/*
* Copyright (C) 2005-2012 Alfresco Software Limited.
*
* This file is part of Alfresco
*
* Alfresco is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Alfresco is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
*/
package org.alfresco.repo.action.executer;
import java.io.Serializable;
import java.util.List;
import java.util.Map;
import org.alfresco.model.ContentModel;
import org.alfresco.repo.action.executer.ActionExecuterAbstractBase;
import org.alfresco.repo.content.metadata.MetadataEmbedder;
import org.alfresco.repo.content.metadata.MetadataExtracterRegistry;
import org.alfresco.service.cmr.action.Action;
import org.alfresco.service.cmr.action.ParameterDefinition;
import org.alfresco.service.cmr.repository.ContentReader;
import org.alfresco.service.cmr.repository.ContentService;
import org.alfresco.service.cmr.repository.ContentWriter;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.service.cmr.repository.NodeService;
import org.alfresco.service.namespace.QName;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Embed metadata in any content.
* <p>
* The metadata is embedded in the content from the current
* property values.
*
* @author Jesper Steen Møller, Ray Gauss II
*/
public class ContentMetadataEmbedder extends ActionExecuterAbstractBase
{
private static Log logger = LogFactory.getLog(ContentMetadataEmbedder.class);
public static final String EXECUTOR_NAME = "embed-metadata";
private NodeService nodeService;
private ContentService contentService;
private MetadataExtracterRegistry metadataExtracterRegistry;
/**
* @param nodeService the node service
*/
public void setNodeService(NodeService nodeService)
{
this.nodeService = nodeService;
}
/**
* @param contentService The contentService to set.
*/
public void setContentService(ContentService contentService)
{
this.contentService = contentService;
}
/**
* @param metadataExtracterRegistry The metadataExtracterRegistry to set.
*/
public void setMetadataExtracterRegistry(MetadataExtracterRegistry metadataExtracterRegistry)
{
this.metadataExtracterRegistry = metadataExtracterRegistry;
}
/**
* @see org.alfresco.repo.action.executer.ActionExecuter#execute(org.alfresco.service.cmr.repository.NodeRef,
* NodeRef)
*/
public void executeImpl(Action ruleAction, NodeRef actionedUponNodeRef)
{
if (!nodeService.exists(actionedUponNodeRef))
{
// Node is gone
return;
}
ContentReader reader = contentService.getReader(actionedUponNodeRef, ContentModel.PROP_CONTENT);
// The reader may be null, e.g. for folders and the like
if (reader == null || reader.getMimetype() == null)
{
if(logger.isDebugEnabled())
{
logger.debug("no content or mimetype - do nothing");
}
// No content to extract data from
return;
}
String mimetype = reader.getMimetype();
MetadataEmbedder embedder = metadataExtracterRegistry.getEmbedder(mimetype);
if (embedder == null)
{
if(logger.isDebugEnabled())
{
logger.debug("no embedder for mimetype:" + mimetype);
}
// There is no embedder to use
return;
}
ContentWriter writer = contentService.getWriter(actionedUponNodeRef, ContentModel.PROP_CONTENT, true);
// The writer may be null, e.g. for folders and the like
if (writer == null || writer.getMimetype() == null)
{
if(logger.isDebugEnabled())
{
logger.debug("no content or mimetype - do nothing");
}
// No content to embed data in
return;
}
// Get all the node's properties
Map<QName, Serializable> nodeProperties = nodeService.getProperties(actionedUponNodeRef);
try
{
embedder.embed(nodeProperties, reader, writer);
}
catch (Throwable e)
{
// Extracters should attempt to handle all error conditions and embed
// as much as they can. If, however, one should fail, we don't want the
// action itself to fail. We absorb and report the exception here.
if (logger.isDebugEnabled())
{
logger.debug(
"Meetadata embedding failed: \n" +
" Extracter: " + this + "\n" +
" Node: " + actionedUponNodeRef + "\n" +
" Content: " + writer,
e);
}
else
{
logger.warn(
"Metadata embedding failed (turn on DEBUG for full error): \n" +
" Extracter: " + this + "\n" +
" Node: " + actionedUponNodeRef + "\n" +
" Content: " + writer + "\n" +
" Failure: " + e.getMessage());
}
}
}
@Override
protected void addParameterDefinitions(List<ParameterDefinition> arg0)
{
// None!
}
}