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 @Override 044 public Blob getBlob() { 045 CoreSession session = getSession(); 046 boolean sessionOpened = false; 047 if (session == null) { 048 sessionOpened = true; 049 session = CoreInstance.openCoreSession(doc.getRepositoryName()); 050 } 051 try { 052 DocumentModelList docs = session.getChildren(doc.getRef(), "Picture"); 053 if (docs.isEmpty()) { 054 return null; 055 } 056 DocumentModel documentModel = docs.get(0); 057 if (documentModel == null) { 058 return null; 059 } 060 BlobHolder bh = documentModel.getAdapter(BlobHolder.class); 061 return bh.getBlob(); 062 } finally { 063 if (sessionOpened) { 064 session.close(); 065 } 066 } 067 068 } 069 070 @Override 071 public List<Blob> getBlobs() { 072 return getBlobs("Original"); 073 } 074 075 public List<Blob> getBlobs(String title) { 076 CoreSession session = getSession(); 077 boolean sessionOpened = false; 078 if (session == null) { 079 sessionOpened = true; 080 session = CoreInstance.openCoreSession(doc.getRepositoryName()); 081 } 082 try { 083 DocumentModelList docList = session.getChildren(doc.getRef(), "Picture"); 084 List<Blob> blobList = new ArrayList<Blob>(docList.size()); 085 for (DocumentModel documentModel : docList) { 086 if ("Original".equals(title)) { 087 BlobHolder bh = documentModel.getAdapter(BlobHolder.class); 088 blobList.add(bh.getBlob()); 089 } else { 090 PictureResourceAdapter picture = documentModel.getAdapter(PictureResourceAdapter.class); 091 blobList.add(picture.getPictureFromTitle(title)); 092 } 093 } 094 return blobList; 095 } finally { 096 if (sessionOpened) { 097 session.close(); 098 } 099 } 100 } 101 102 @Override 103 public String getHash() { 104 Blob blob = getBlob(); 105 if (blob != null) { 106 String h = blob.getDigest(); 107 if (h != null) { 108 return h; 109 } 110 } 111 return doc.getId() + xPath + getModificationDate().toString(); 112 } 113 114 protected CoreSession getSession() { 115 if (session == null && doc != null) { 116 session = doc.getCoreSession(); 117 } 118 return session; 119 } 120 121}