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 * Guillaume Renard <grenard@nuxeo.com> 018 */ 019 020package org.nuxeo.ecm.core.io.marshallers.json.enrichers; 021 022import static org.nuxeo.ecm.core.io.registry.reflect.Instantiations.SINGLETON; 023import static org.nuxeo.ecm.core.io.registry.reflect.Priorities.REFERENCE; 024 025import java.io.IOException; 026 027import org.nuxeo.ecm.core.api.DocumentModel; 028import org.nuxeo.ecm.core.api.DocumentModelList; 029import org.nuxeo.ecm.core.io.registry.context.RenderingContext.SessionWrapper; 030import org.nuxeo.ecm.core.io.registry.reflect.Setup; 031import org.nuxeo.ecm.core.query.sql.NXQL; 032 033import com.fasterxml.jackson.core.JsonGenerator; 034 035/** 036 * @since 8.10 037 */ 038@Setup(mode = SINGLETON, priority = REFERENCE) 039public class HasFolderishChildJsonEnricher extends AbstractJsonEnricher<DocumentModel> { 040 041 public static final String NAME = "hasFolderishChild"; 042 043 public HasFolderishChildJsonEnricher() { 044 super(NAME); 045 } 046 047 @Override 048 public void write(JsonGenerator jg, DocumentModel document) throws IOException { 049 if (!document.isFolder()) { 050 jg.writeBooleanField(NAME, false); 051 return; 052 } 053 try (SessionWrapper wrapper = ctx.getSession(document)) { 054 String fetchFolderishChildQuery = "SELECT * FROM Document WHERE ecm:mixinType = 'Folderish'" 055 + " AND ecm:mixinType != 'HiddenInNavigation' AND ecm:isTrashed = 0" 056 + " AND ecm:parentId = " + NXQL.escapeString(document.getId()); 057 // Limit result set to 1 as we just want to know if there's at least one Folderish child 058 DocumentModelList children = wrapper.getSession().query(fetchFolderishChildQuery, 1); 059 jg.writeBooleanField(NAME, !children.isEmpty()); 060 } 061 } 062 063}