001/* 002 * Copyright (c) 2006-2011 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the Eclipse Public License v1.0 006 * which accompanies this distribution, and is available at 007 * http://www.eclipse.org/legal/epl-v10.html 008 * 009 * Contributors: 010 * Nuxeo - initial API and implementation 011 * 012 */ 013package org.nuxeo.ecm.core.api.blobholder; 014 015import java.io.IOException; 016import java.util.HashMap; 017import java.util.Map; 018import java.util.Set; 019 020import org.apache.commons.logging.Log; 021import org.apache.commons.logging.LogFactory; 022import org.nuxeo.ecm.core.api.Blob; 023import org.nuxeo.ecm.core.api.DocumentModel; 024import org.nuxeo.ecm.core.api.PropertyException; 025import org.nuxeo.ecm.core.api.adapter.DocumentAdapterFactory; 026import org.nuxeo.ecm.core.api.externalblob.ExternalBlobAdapter; 027import org.nuxeo.ecm.core.api.externalblob.ExternalBlobAdapterDescriptor; 028import org.nuxeo.runtime.api.Framework; 029import org.nuxeo.runtime.model.ComponentInstance; 030import org.nuxeo.runtime.model.DefaultComponent; 031 032/** 033 * Runtime component to manage the pluggable factory for {@link DocumentAdapterFactory}. 034 * <p> 035 * Also provides the service interface {@link BlobHolderAdapterService} 036 * 037 * @author tiry 038 */ 039public class BlobHolderAdapterComponent extends DefaultComponent implements BlobHolderAdapterService { 040 041 private static final Log log = LogFactory.getLog(BlobHolderAdapterComponent.class); 042 043 public static final String BLOBHOLDERFACTORY_EP = "BlobHolderFactory"; 044 045 public static final String EXTERNALBLOB_ADAPTER_EP = "ExternalBlobAdapter"; 046 047 protected final Map<String, BlobHolderFactory> factories = new HashMap<String, BlobHolderFactory>(); 048 049 protected Map<String, BlobHolderFactory> factoriesByFacets = new HashMap<String, BlobHolderFactory>(); 050 051 protected static final Map<String, ExternalBlobAdapter> externalBlobAdapters = new HashMap<String, ExternalBlobAdapter>(); 052 053 @Override 054 public void registerContribution(Object contribution, String extensionPoint, ComponentInstance contributor) { 055 056 if (BLOBHOLDERFACTORY_EP.equals(extensionPoint)) { 057 BlobHolderFactoryDescriptor desc = (BlobHolderFactoryDescriptor) contribution; 058 String docType = desc.getDocType(); 059 if (docType != null) { 060 factories.put(docType, desc.getFactory()); 061 } 062 String facet = desc.getFacet(); 063 if (facet != null) { 064 factoriesByFacets.put(facet, desc.getFactory()); 065 } 066 } else if (EXTERNALBLOB_ADAPTER_EP.equals(extensionPoint)) { 067 ExternalBlobAdapterDescriptor desc = (ExternalBlobAdapterDescriptor) contribution; 068 ExternalBlobAdapter adapter = desc.getAdapter(); 069 String prefix = desc.getPrefix(); 070 if (externalBlobAdapters.containsKey(prefix)) { 071 log.info(String.format("Overriding external blob adapter with prefix '%s'", prefix)); 072 externalBlobAdapters.remove(prefix); 073 } 074 adapter.setPrefix(desc.getPrefix()); 075 adapter.setProperties(desc.getProperties()); 076 externalBlobAdapters.put(desc.getPrefix(), adapter); 077 log.info(String.format("Registered external blob adapter with prefix '%s'", prefix)); 078 } else { 079 log.error("Unknown extension point " + extensionPoint); 080 } 081 } 082 083 @Override 084 public void unregisterContribution(Object contribution, String extensionPoint, ComponentInstance contributor) { 085 } 086 087 /* for test */ 088 089 public static Set<String> getFactoryNames() { 090 return ((BlobHolderAdapterComponent) Framework.getLocalService(BlobHolderAdapterService.class)).factories.keySet(); 091 } 092 093 /* Service Interface */ 094 095 @Override 096 public ExternalBlobAdapter getExternalBlobAdapterForPrefix(String prefix) { 097 return externalBlobAdapters.get(prefix); 098 } 099 100 @Override 101 public ExternalBlobAdapter getExternalBlobAdapterForUri(String uri) { 102 if (uri != null && uri.contains(ExternalBlobAdapter.PREFIX_SEPARATOR)) { 103 String prefix = uri.substring(0, uri.indexOf(ExternalBlobAdapter.PREFIX_SEPARATOR)); 104 return getExternalBlobAdapterForPrefix(prefix); 105 } 106 return null; 107 } 108 109 @Override 110 public Blob getExternalBlobForUri(String uri) throws PropertyException, IOException { 111 ExternalBlobAdapter adapter = getExternalBlobAdapterForUri(uri); 112 if (adapter == null) { 113 throw new PropertyException(String.format("No external blob adapter found for uri '%s'", uri)); 114 } 115 return adapter.getBlob(uri); 116 } 117 118 @Override 119 public BlobHolder getBlobHolderAdapter(DocumentModel doc) { 120 if (factories.containsKey(doc.getType())) { 121 BlobHolderFactory factory = factories.get(doc.getType()); 122 return factory.getBlobHolder(doc); 123 } 124 125 for (Map.Entry<String, BlobHolderFactory> entry : factoriesByFacets.entrySet()) { 126 if (doc.hasFacet(entry.getKey())) { 127 return entry.getValue().getBlobHolder(doc); 128 } 129 } 130 131 if (doc.hasSchema("file")) { 132 return new DocumentBlobHolder(doc, "file:content", "file:filename"); 133 } else if (doc.hasSchema("note")) { 134 String mt = null; 135 try { 136 mt = (String) doc.getPropertyValue("note:mime_type"); 137 if (mt == null) { 138 String note = (String) doc.getPropertyValue("note:note"); 139 if (note != null && !"".equals(note)) { 140 mt = "text/plain"; // BBB 141 } 142 } 143 } catch (PropertyException e) { 144 // mt = null; 145 } 146 return new DocumentStringBlobHolder(doc, "note:note", mt); 147 } 148 return null; 149 } 150 151}