001/*
002 * (C) Copyright 2006-2007 Nuxeo SAS (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 */
015package org.nuxeo.ecm.diff.content.adapter.factories;
016
017import org.nuxeo.ecm.core.api.DocumentModel;
018import org.nuxeo.ecm.core.api.blobholder.BlobHolder;
019import org.nuxeo.ecm.diff.content.ContentDiffAdapter;
020import org.nuxeo.ecm.diff.content.adapter.ContentDiffAdapterFactory;
021import org.nuxeo.ecm.diff.content.adapter.base.ConverterBasedContentDiffAdapter;
022
023/**
024 * Content diff adapter factory for all documents that have the file schema.
025 *
026 * @author Antoine taillefer
027 * @since 5.6
028 */
029public class FileBasedContentDiffAdapterFactory implements ContentDiffAdapterFactory {
030
031    public ContentDiffAdapter getAdapter(DocumentModel doc) {
032        ConverterBasedContentDiffAdapter adapter = new ConverterBasedContentDiffAdapter();
033        adapter.setAdaptedDocument(doc);
034        BlobHolder bh = doc.getAdapter(BlobHolder.class);
035        if (bh == null) {
036            if (doc.hasSchema("file")) {
037                adapter.setDefaultContentDiffFieldXPath("file:content");
038            } else {
039                // Has "files" schema, set xpath to first blob as default
040                adapter.setDefaultContentDiffFieldXPath("files:files/0/file");
041            }
042        }
043        return adapter;
044    }
045
046}