001/* 002 * (C) Copyright 2006-2009 Nuxeo SAS (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * Nuxeo - initial API and implementation 016 * 017 * $Id$ 018 */ 019 020package org.nuxeo.project.sample.restAPI; 021 022import java.io.Serializable; 023import java.util.HashMap; 024import java.util.List; 025import org.dom4j.dom.DOMDocument; 026import org.dom4j.dom.DOMDocumentFactory; 027import org.nuxeo.ecm.core.api.CoreInstance; 028import org.nuxeo.ecm.core.api.CoreSession; 029import org.nuxeo.ecm.core.api.DocumentModel; 030import org.nuxeo.ecm.core.api.NuxeoException; 031import org.nuxeo.ecm.core.api.PropertyException; 032import org.nuxeo.ecm.platform.query.api.PageProvider; 033import org.nuxeo.ecm.platform.query.api.PageProviderDefinition; 034import org.nuxeo.ecm.platform.query.api.PageProviderService; 035import org.nuxeo.ecm.platform.query.nxql.CoreQueryDocumentPageProvider; 036import org.nuxeo.ecm.platform.ui.web.restAPI.BaseNuxeoRestlet; 037import org.nuxeo.runtime.api.Framework; 038import org.restlet.data.MediaType; 039import org.restlet.data.Request; 040import org.restlet.data.Response; 041 042/** 043 * This Restlet get the latest created Book document and send back a custom JSon object to the client. 044 * 045 * @author ldoguin 046 */ 047public class LastBookRestlet extends BaseNuxeoRestlet { 048 049 public static final String LAST_BOOK_PROVIDER = "LAST_BOOK"; 050 051 /** 052 * override the handle method to do custom json serialization. 053 */ 054 @Override 055 public void handle(Request req, Response res) { 056 DOMDocumentFactory domfactory = new DOMDocumentFactory(); 057 DOMDocument result = (DOMDocument) domfactory.createDocument(); 058 059 try (CoreSession session = CoreInstance.openCoreSession(null, getUserPrincipal(req))) { 060 061 PageProviderService pps = Framework.getService(PageProviderService.class); 062 063 PageProviderDefinition ppd = pps.getPageProviderDefinition(LAST_BOOK_PROVIDER); 064 HashMap<String, Serializable> props = new HashMap<String, Serializable>(); 065 props.put(CoreQueryDocumentPageProvider.CORE_SESSION_PROPERTY, (Serializable) session); 066 067 PageProvider<?> provider = pps.getPageProvider(LAST_BOOK_PROVIDER, ppd, null, null, Long.valueOf(1), 068 Long.valueOf(0), props); 069 070 // fetch result 071 List<?> dms = provider.getCurrentPage(); 072 if (dms.size() == 0) { 073 handleError(result, res, "No result available"); 074 return; 075 } 076 DocumentModel lastBookDm = (DocumentModel) dms.get(0); 077 // serialize and write in response 078 String json = serialize(lastBookDm); 079 res.setEntity(json, MediaType.TEXT_PLAIN); 080 } catch (NuxeoException e) { 081 handleError(res, e); 082 } 083 } 084 085 private String serialize(DocumentModel lastBookDm) throws PropertyException { 086 String jSonString = "{\"book\": {" + "\"title\": \"" + lastBookDm.getPropertyValue("dc:title") + "\"," 087 + "\"isbn\": \"" + lastBookDm.getPropertyValue("bk:isbn") + "\"," + "\"rating\": \"" 088 + lastBookDm.getPropertyValue("bk:rating") + "\"," + "\"publicationDate\": \"" 089 + lastBookDm.getPropertyValue("bk:publicationDate") + "\"," + "\"keywords\": \"" 090 + lastBookDm.getPropertyValue("bk:keywords") + "\"}}"; 091 return jSonString; 092 } 093 094}