001/*
002 * (C) Copyright 2012 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Thierry Delprat
018 */
019package org.nuxeo.ecm.platform.rendition.version;
020
021import java.util.Collections;
022import java.util.List;
023
024import org.nuxeo.ecm.core.api.CoreSession;
025import org.nuxeo.ecm.core.event.impl.ShallowDocumentModel;
026import org.nuxeo.ecm.core.versioning.OrphanVersionRemovalFilter;
027import org.nuxeo.ecm.platform.rendition.Constants;
028
029public class RenditionAwareVersionRemovalPolicy implements OrphanVersionRemovalFilter {
030
031    @Override
032    public List<String> getRemovableVersionIds(CoreSession session, ShallowDocumentModel deletedLiveDoc,
033            List<String> versionUUIDs) {
034
035        if (deletedLiveDoc.hasFacet(Constants.RENDITION_FACET)) {
036            // don't remove orphan rendition versions
037            return Collections.emptyList();
038        }
039        return versionUUIDs;
040    }
041}