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.platform.preview.adapter.factories; 018 019import org.nuxeo.ecm.core.api.DocumentModel; 020import org.nuxeo.ecm.core.api.PropertyException; 021import org.nuxeo.ecm.core.api.blobholder.BlobHolder; 022import org.nuxeo.ecm.platform.preview.adapter.PreviewAdapterFactory; 023import org.nuxeo.ecm.platform.preview.adapter.base.ConverterBasedHtmlPreviewAdapter; 024import org.nuxeo.ecm.platform.preview.api.HtmlPreviewAdapter; 025 026/** 027 * Preview adapter factory for all documents that have the file schema. 028 * 029 * @author tiry 030 */ 031public class FileBasedPreviewAdapterFactory implements PreviewAdapterFactory { 032 033 private static final String FIRST_FILE_IN_FILES_PROPERTY = "files:files/0/file"; 034 035 public HtmlPreviewAdapter getAdapter(DocumentModel doc) { 036 ConverterBasedHtmlPreviewAdapter adapter = new ConverterBasedHtmlPreviewAdapter(); 037 adapter.setAdaptedDocument(doc); 038 BlobHolder bh = doc.getAdapter(BlobHolder.class); 039 if (bh == null) { 040 if (doc.hasSchema("file")) { 041 adapter.setDefaultPreviewFieldXPath("file:content"); 042 } else { 043 // Has "files" schema, set xpath to first blob as default 044 try { 045 doc.getProperty(FIRST_FILE_IN_FILES_PROPERTY); 046 adapter.setDefaultPreviewFieldXPath(FIRST_FILE_IN_FILES_PROPERTY); 047 } catch (PropertyException e) { 048 // the property does not exist for this document, then return null 049 return null; 050 } 051 } 052 } 053 return adapter; 054 } 055 056}