001/*
002 * (C) Copyright 2006-2007 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 */
017package org.nuxeo.ecm.diff.content.adapter.factories;
018
019import org.nuxeo.ecm.core.api.DocumentModel;
020import org.nuxeo.ecm.core.api.blobholder.BlobHolder;
021import org.nuxeo.ecm.diff.content.ContentDiffAdapter;
022import org.nuxeo.ecm.diff.content.adapter.ContentDiffAdapterFactory;
023import org.nuxeo.ecm.diff.content.adapter.base.ConverterBasedContentDiffAdapter;
024
025/**
026 * Content diff adapter factory for all documents that have the file schema.
027 *
028 * @author Antoine taillefer
029 * @since 5.6
030 */
031public class FileBasedContentDiffAdapterFactory implements ContentDiffAdapterFactory {
032
033    public ContentDiffAdapter getAdapter(DocumentModel doc) {
034        ConverterBasedContentDiffAdapter adapter = new ConverterBasedContentDiffAdapter();
035        adapter.setAdaptedDocument(doc);
036        BlobHolder bh = doc.getAdapter(BlobHolder.class);
037        if (bh == null) {
038            if (doc.hasSchema("file")) {
039                adapter.setDefaultContentDiffFieldXPath("file:content");
040            } else {
041                // Has "files" schema, set xpath to first blob as default
042                adapter.setDefaultContentDiffFieldXPath("files:files/0/file");
043            }
044        }
045        return adapter;
046    }
047
048}