001/* 002 * (C) Copyright 2016 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 018 */ 019 020package org.nuxeo.apidoc.listener; 021 022import static org.nuxeo.apidoc.listener.AttributesExtractorScheduler.EXTRACT_XML_ATTRIBUTES_NEEDED; 023import static org.nuxeo.ecm.core.api.event.DocumentEventTypes.ABOUT_TO_CREATE; 024 025import java.util.Arrays; 026import java.util.List; 027 028import org.nuxeo.apidoc.api.ExtensionInfo; 029import org.nuxeo.apidoc.api.ExtensionPointInfo; 030import org.nuxeo.ecm.core.api.Blob; 031import org.nuxeo.ecm.core.api.DocumentModel; 032import org.nuxeo.ecm.core.api.model.Property; 033import org.nuxeo.ecm.core.event.Event; 034import org.nuxeo.ecm.core.event.EventListener; 035import org.nuxeo.ecm.core.event.impl.DocumentEventContext; 036 037/** 038 * Listener triggered on "aboutTo*" events to let the other lister 039 * org.nuxeo.apidoc.listener.AttributeExtractorWorkerListener to trigger Worker 040 * when blob are ready to be extracted. 041 * 042 * @author <a href="mailto:ak@nuxeo.com">Arnaud Kervern</a> 043 * @since 8.3 044 */ 045public class AttributesExtractorStater implements EventListener { 046 047 public static final String ATTRIBUTES_PROPERTY = "adc:attributes"; 048 049 public static final List<String> DOC_TYPES = Arrays.asList(ExtensionPointInfo.TYPE_NAME, ExtensionInfo.TYPE_NAME); 050 051 @Override 052 public void handleEvent(Event event) { 053 if (!(event.getContext() instanceof DocumentEventContext)) { 054 return; 055 } 056 057 DocumentEventContext ctx = (DocumentEventContext) event.getContext(); 058 DocumentModel doc = ctx.getSourceDocument(); 059 if (!DOC_TYPES.contains(doc.getType())) { 060 return; 061 } 062 063 Property fileProperty = doc.getProperty("file:content"); 064 // Handling "migration case", when a blob is present but without any 065 // attributes. 066 boolean force = fileProperty.getValue() != null && doc.getPropertyValue(ATTRIBUTES_PROPERTY) == null; 067 if (!(force || fileProperty.isDirty() || ABOUT_TO_CREATE.equals(event.getName()))) { 068 return; 069 } 070 071 Blob blob = (Blob) fileProperty.getValue(); 072 if (blob == null) { 073 doc.setPropertyValue(ATTRIBUTES_PROPERTY, null); 074 } else { 075 // Property will be read by 076 // org.nuxeo.apidoc.listener.AttributeExtractorWorkerListener to 077 // trigger worker when everything is good. 078 // Worker cannot be triggered on "aboutTo*" events, and dirty props 079 // cannot be checked post "aboutTo*" events 080 ctx.setProperty(EXTRACT_XML_ATTRIBUTES_NEEDED, true); 081 } 082 } 083}