mirror of
https://github.com/Alfresco/alfresco-community-repo.git
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39febbbcd8
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@20166 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
503 lines
17 KiB
Java
503 lines
17 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.cmis.renditions;
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import java.util.ArrayList;
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import java.util.Collection;
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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.Map;
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import java.util.Set;
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import java.util.Map.Entry;
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import org.alfresco.cmis.CMISFilterNotValidException;
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import org.alfresco.cmis.CMISRendition;
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import org.alfresco.cmis.CMISRenditionService;
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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.model.RenditionModel;
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import org.alfresco.repo.content.transform.magick.ImageResizeOptions;
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import org.alfresco.repo.content.transform.magick.ImageTransformationOptions;
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import org.alfresco.repo.thumbnail.ThumbnailDefinition;
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import org.alfresco.service.cmr.repository.ChildAssociationRef;
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import org.alfresco.service.cmr.repository.ContentData;
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import org.alfresco.service.cmr.repository.NodeRef;
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import org.alfresco.service.cmr.repository.NodeService;
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import org.alfresco.service.cmr.thumbnail.ThumbnailService;
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import org.alfresco.service.namespace.RegexQNamePattern;
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/**
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* Rendition Service Implementation
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*
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* @author Stas Sokolovsky
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*/
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public class CMISRenditionServiceImpl implements CMISRenditionService
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{
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/** Rendition filter constants */
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private static final String FILTER_WILDCARD = "*";
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private static final String FILTER_NONE = "cmis:none";
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private static final String FILTER_DELIMITER = ",";
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private static final String SUBTYPES_POSTFIX = "/*";
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private static final String SUBTYPES_DELIMITER = "/";
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/** Service dependencies */
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private ThumbnailService thumbnailService;
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private NodeService nodeService;
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/** Kind to thumbnail mapping */
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private Map<String, List<String>> kindToThumbnailNames = new HashMap<String, List<String>>();
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private Map<String, String> thumbnailNamesToKind = new HashMap<String, String>();
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/** Custom renditions */
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private CustomRenditionsCache customRenditionsCache;
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/**
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* @throws CMISFilterNotValidException
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* @see org.alfresco.cmis.CMISRenditionService#getRenditions(org.alfresco.service.cmr.repository.NodeRef, java.lang.String)
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*/
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public List<CMISRendition> getRenditions(NodeRef node, String renditionFilter) throws CMISFilterNotValidException
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{
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Collection<CMISRendition> result = null;
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ThumbnailFilter thumbnailFilter = getThumbnailFilter(renditionFilter);
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if (thumbnailFilter != null)
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{
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result = getRenditions(node, thumbnailFilter);
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}
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return result != null ? new ArrayList<CMISRendition>(result) : null;
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}
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/**
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* Get renditions for a document.
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*
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* @param node node reference of document
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* @param thumbnailFilter thumbnail filter
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* @return set of renditions
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*/
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private Set<CMISRendition> getRenditions(NodeRef node, ThumbnailFilter thumbnailFilter)
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{
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Set<CMISRendition> result = new HashSet<CMISRendition>();
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if (thumbnailFilter.isAny())
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{
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result.addAll(getAllRenditions(node));
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}
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else
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{
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for (String thumbnailName : thumbnailFilter.getThumbnailNames())
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{
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CMISRendition rendition = getRenditionByThumbnailName(node, thumbnailName);
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if (rendition != null)
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{
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result.add(rendition);
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}
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}
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for (String mimetype : thumbnailFilter.getMimetypes())
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{
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result.addAll(getRenditionByMimetype(node, mimetype));
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}
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}
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result.addAll(getCustomRenditions(thumbnailFilter));
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return result;
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}
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/**
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* Get rendition by thumbnail name.
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*
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* @param node node reference of document
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* @param thumbnailName thumbnail name
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* @return rendition
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*/
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private CMISRendition getRenditionByThumbnailName(NodeRef node, String thumbnailName)
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{
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CMISRendition result = null;
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NodeRef thumbnailNode = thumbnailService.getThumbnailByName(node, ContentModel.PROP_CONTENT, thumbnailName);
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if (thumbnailNode != null)
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{
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result = getRendition(thumbnailNode, node);
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}
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return result;
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}
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/**
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* Get rendition by mimetype.
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*
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* @param node node reference of document
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* @param mimetype rendition mimetype
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* @return list of renditions
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*/
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private List<CMISRendition> getRenditionByMimetype(NodeRef node, String mimetype)
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{
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List<CMISRendition> result = new ArrayList<CMISRendition>();
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List<NodeRef> thumbnails = thumbnailService.getThumbnails(node, ContentModel.PROP_CONTENT, mimetype, null);
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if (thumbnails != null)
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{
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for (NodeRef thumbnailNode : thumbnails)
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{
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CMISRendition rendition = getRendition(thumbnailNode, node);
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if (rendition != null)
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{
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result.add(rendition);
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}
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}
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}
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return result;
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}
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/**
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* Convert the rendition filter to thumbnail filter.
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*
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* @param renditionFilter rendition filter
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* @return thumbnail filter
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* @throws CMISFilterNotValidException
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*/
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private ThumbnailFilter getThumbnailFilter(String renditionFilter) throws CMISFilterNotValidException
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{
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ThumbnailFilter result = null;
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if (renditionFilter != null && !renditionFilter.equals(FILTER_NONE))
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{
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// Scan the filter for whitespace, which is disallowed by the spec
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for (int i=0; i < renditionFilter.length(); i = renditionFilter.offsetByCodePoints(i, 1))
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{
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if (Character.isWhitespace(renditionFilter.codePointAt(i)))
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{
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throw new CMISFilterNotValidException(renditionFilter);
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}
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}
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result = new ThumbnailFilter();
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if (renditionFilter.equals(FILTER_WILDCARD))
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{
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result.setAny(true);
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}
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else
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{
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String[] filterElements = renditionFilter.split(FILTER_DELIMITER);
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if (filterElements == null || filterElements.length < 1)
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{
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throw new AlfrescoRuntimeException("Invalid rendition filter");
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}
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for (String filterElement : filterElements)
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{
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filterElement = filterElement.trim();
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if (filterElement.indexOf('/') == -1)
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{
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result.getKinds().add(filterElement);
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List<String> thumbnails = kindToThumbnailNames.get(filterElement);
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if (thumbnails != null)
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{
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result.getThumbnailNames().addAll(thumbnails);
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}
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}
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else
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{
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result.getMimetypes().add(filterElement);
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}
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}
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}
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}
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return result;
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}
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/**
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* Get the thumbnail definition.
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*
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* @param thumbnailName thumbnail name
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* @return thumbnail definition
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*/
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private ThumbnailDefinition getThumbnailDefinition(String thumbnailName)
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{
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return thumbnailService.getThumbnailRegistry().getThumbnailDefinition(thumbnailName);
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}
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/**
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* Get the image attributes of thumbnail.
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*
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* @param thumbnailName thumbnail name
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* @return image attributes
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*/
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private ImageResizeOptions getImageAttributes(String thumbnailName)
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{
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ThumbnailDefinition thumbnailDefinition = getThumbnailDefinition(thumbnailName);
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if (thumbnailDefinition != null && thumbnailDefinition.getTransformationOptions() != null
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&& thumbnailDefinition.getTransformationOptions() instanceof ImageTransformationOptions)
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{
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return ((ImageTransformationOptions) thumbnailDefinition.getTransformationOptions()).getResizeOptions();
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}
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return null;
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}
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/**
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* Create CMISRendition by thumbnailNode and documentNode.
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*
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* @param thumbnailNode thumbnail node reference
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* @param documentNode document node reference
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* @return CMISRendition
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*/
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private CMISRendition getRendition(NodeRef thumbnailNode, NodeRef documentNode)
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{
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CMISRenditionImpl rendition = null;
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String thumbnailName = getThumbnailName(thumbnailNode);
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String kind = thumbnailNamesToKind.get(thumbnailName);
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kind = (kind == null) ? thumbnailName : kind;
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rendition = new CMISRenditionImpl();
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ContentData contentData = (ContentData) nodeService.getProperty(thumbnailNode, ContentModel.PROP_CONTENT);
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rendition.setNodeRef(thumbnailNode);
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rendition.setStreamId(thumbnailNode.toString());
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rendition.setRenditionDocumentId(documentNode.toString());
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rendition.setTitle(thumbnailName);
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rendition.setKind(kind);
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rendition.setMimeType(contentData.getMimetype());
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rendition.setLength((int) contentData.getSize());
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ImageResizeOptions imageAttributes = getImageAttributes(thumbnailName);
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if (imageAttributes != null)
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{
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rendition.setWidth(imageAttributes.getWidth());
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rendition.setHeight(imageAttributes.getHeight());
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}
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return rendition;
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}
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private String getThumbnailName(NodeRef thumbnailNode)
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{
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String thumbnailName = null;
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List<ChildAssociationRef> parentAssocs = nodeService.getParentAssocs(thumbnailNode,
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RenditionModel.ASSOC_RENDITION, RegexQNamePattern.MATCH_ALL);
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if (parentAssocs.size() == 1) {
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ChildAssociationRef parentAssoc = parentAssocs.get(0);
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thumbnailName = parentAssoc.getQName().getLocalName();
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}
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return thumbnailName;
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}
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/**
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* Get custom renditions.
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*
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* @param thumbnailFilter thumbnail filter
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* @return list of renditions
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*/
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private List<CMISRendition> getCustomRenditions(ThumbnailFilter filter)
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{
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List<CMISRendition> result = new ArrayList<CMISRendition>();
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if (customRenditionsCache != null)
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{
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if (filter.isAny())
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{
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result.addAll(customRenditionsCache.getAllRenditions());
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}
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else
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{
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for (String kind : filter.getKinds())
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{
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List<CMISRendition> renditions = customRenditionsCache.getRenditionsByKind(kind);
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if (renditions != null)
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{
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result.addAll(renditions);
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}
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}
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for (String mimetype : filter.getMimetypes())
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{
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List<CMISRendition> renditions = customRenditionsCache.getRenditionsByMimeType(mimetype);
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if (renditions != null)
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{
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result.addAll(renditions);
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}
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}
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}
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}
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return result;
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}
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/**
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* Get all renditions for a document.
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*
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* @param node document node ref
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* @return list of renditions
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*/
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private List<CMISRendition> getAllRenditions(NodeRef node)
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{
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return getRenditionByMimetype(node, null);
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}
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/**
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* Set rendition kind mapping.
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*
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* @param RenditionKind to Thumbnail Definition mapping
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*/
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public void setRenditionKindMapping(Map<String, List<String>> renditionKinds)
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{
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this.kindToThumbnailNames = renditionKinds;
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for (Entry<String, List<String>> entry : renditionKinds.entrySet())
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{
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for (String thumbnailName : entry.getValue())
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{
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thumbnailNamesToKind.put(thumbnailName, entry.getKey());
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}
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}
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}
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/**
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* Set custom renditions.
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*
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* @param renditions list of renditions
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*/
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public void setCustomRenditions(List<CMISRendition> renditions)
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{
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this.customRenditionsCache = new CustomRenditionsCache(renditions);
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}
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/**
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* Set the NodeService.
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*
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* @param nodeService NodeService
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*/
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public void setNodeService(NodeService nodeService)
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{
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this.nodeService = nodeService;
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}
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/**
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* Set the ThumbnailService.
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*
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* @param thumbnailService thumbnailService
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*/
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public void setThumbnailService(ThumbnailService thumbnailService)
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{
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this.thumbnailService = thumbnailService;
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}
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/**
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* Cache that aggregates renditions informaition to allow fast searching by kind and mimetype
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*/
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private class CustomRenditionsCache
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{
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private Map<String, List<CMISRendition>> renditionsByKind;
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private Map<String, List<CMISRendition>> renditionsByMimeType;
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private Map<String, List<CMISRendition>> renditionsByBaseMimeType;
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private List<CMISRendition> allRenditions;
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public CustomRenditionsCache(List<CMISRendition> renditions)
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{
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allRenditions = renditions;
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renditionsByKind = new HashMap<String, List<CMISRendition>>(renditions.size());
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renditionsByMimeType = new HashMap<String, List<CMISRendition>>(renditions.size());
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renditionsByBaseMimeType = new HashMap<String, List<CMISRendition>>(renditions.size());
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for (CMISRendition rendition : renditions)
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{
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String baseType = getBaseType(rendition.getMimeType());
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if (!renditionsByKind.containsKey(rendition.getKind()))
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{
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renditionsByKind.put(rendition.getKind(), new ArrayList<CMISRendition>(1));
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}
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if (!renditionsByMimeType.containsKey(rendition.getMimeType()))
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{
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renditionsByMimeType.put(rendition.getMimeType(), new ArrayList<CMISRendition>(1));
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}
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if (!renditionsByBaseMimeType.containsKey(baseType))
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{
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renditionsByBaseMimeType.put(baseType, new ArrayList<CMISRendition>(1));
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}
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renditionsByKind.get(rendition.getKind()).add(rendition);
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renditionsByMimeType.get(rendition.getMimeType()).add(rendition);
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renditionsByBaseMimeType.get(baseType).add(rendition);
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}
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}
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public List<CMISRendition> getRenditionsByKind(String kind)
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{
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return renditionsByKind.get(kind);
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}
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public List<CMISRendition> getRenditionsByMimeType(String mimetype)
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{
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if (mimetype.endsWith(SUBTYPES_POSTFIX))
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{
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String baseMimetype = mimetype.substring(0, mimetype.length() - SUBTYPES_POSTFIX.length());
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return renditionsByBaseMimeType.get(baseMimetype);
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}
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else
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{
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return renditionsByMimeType.get(mimetype);
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}
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}
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public Collection<CMISRendition> getAllRenditions()
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{
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return allRenditions;
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}
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private String getBaseType(String mimetype)
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{
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String baseMymetype = mimetype;
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int subTypeIndex = mimetype.indexOf(SUBTYPES_DELIMITER);
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if (subTypeIndex > 0 || subTypeIndex < mimetype.length())
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{
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baseMymetype = mimetype.substring(0, subTypeIndex);
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}
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return baseMymetype;
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}
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}
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/**
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* Parsed RenditionFilter
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*/
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private class ThumbnailFilter
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{
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private List<String> kinds = new ArrayList<String>();
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private List<String> thumbnailNames = new ArrayList<String>();
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private List<String> mimetypes = new ArrayList<String>();
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private boolean any = false;
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public List<String> getThumbnailNames()
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{
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return thumbnailNames;
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}
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public List<String> getMimetypes()
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{
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return mimetypes;
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}
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public List<String> getKinds()
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{
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return kinds;
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}
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public boolean isAny()
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{
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return any;
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}
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public void setAny(boolean any)
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{
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this.any = any;
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}
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}
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}
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