001/* 002 * (C) Copyright 2006-2009 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 * Nuxeo - initial API and implementation 018 * 019 * $Id$ 020 */ 021 022package org.nuxeo.ecm.platform.picture.api.adapters; 023 024import java.util.ArrayList; 025import java.util.List; 026 027import org.nuxeo.ecm.core.api.Blob; 028import org.nuxeo.ecm.core.api.CoreInstance; 029import org.nuxeo.ecm.core.api.CoreSession; 030import org.nuxeo.ecm.core.api.DocumentModel; 031import org.nuxeo.ecm.core.api.DocumentModelList; 032import org.nuxeo.ecm.core.api.blobholder.BlobHolder; 033import org.nuxeo.ecm.core.api.blobholder.DocumentBlobHolder; 034 035public class PictureBookBlobHolder extends DocumentBlobHolder { 036 037 private CoreSession session; 038 039 public PictureBookBlobHolder(DocumentModel doc, String xPath) { 040 super(doc, xPath); 041 } 042 043 @SuppressWarnings("resource") // session closed only if we opened it 044 @Override 045 public Blob getBlob() { 046 CoreSession session = getSession(); 047 if (session == null) { 048 session = CoreInstance.getCoreSession(doc.getRepositoryName()); 049 } 050 DocumentModelList docs = session.getChildren(doc.getRef(), "Picture"); 051 if (docs.isEmpty()) { 052 return null; 053 } 054 DocumentModel documentModel = docs.get(0); 055 if (documentModel == null) { 056 return null; 057 } 058 BlobHolder bh = documentModel.getAdapter(BlobHolder.class); 059 return bh.getBlob(); 060 061 } 062 063 @Override 064 public List<Blob> getBlobs() { 065 return getBlobs("Original"); 066 } 067 068 @SuppressWarnings("resource") // session closed only if we opened it 069 public List<Blob> getBlobs(String title) { 070 CoreSession session = getSession(); 071 if (session == null) { 072 session = CoreInstance.getCoreSession(doc.getRepositoryName()); 073 } 074 DocumentModelList docList = session.getChildren(doc.getRef(), "Picture"); 075 List<Blob> blobList = new ArrayList<>(docList.size()); 076 for (DocumentModel documentModel : docList) { 077 if ("Original".equals(title)) { 078 BlobHolder bh = documentModel.getAdapter(BlobHolder.class); 079 blobList.add(bh.getBlob()); 080 } else { 081 PictureResourceAdapter picture = documentModel.getAdapter(PictureResourceAdapter.class); 082 blobList.add(picture.getPictureFromTitle(title)); 083 } 084 } 085 return blobList; 086 } 087 088 @Override 089 public String getHash() { 090 Blob blob = getBlob(); 091 if (blob != null) { 092 String h = blob.getDigest(); 093 if (h != null) { 094 return h; 095 } 096 } 097 return doc.getId() + xPath + getModificationDate().toString(); 098 } 099 100 protected CoreSession getSession() { 101 if (session == null && doc != null) { 102 session = doc.getCoreSession(); 103 } 104 return session; 105 } 106 107}