001/* 002 * (C) Copyright 2006-2008 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 * Alexandre Russel 016 * 017 * $Id$ 018 */ 019 020package org.nuxeo.ecm.platform.annotations.gwt.client.annotea; 021 022import java.util.ArrayList; 023import java.util.HashMap; 024import java.util.List; 025import java.util.Map; 026 027import org.nuxeo.ecm.platform.annotations.gwt.client.model.Annotation; 028import org.nuxeo.ecm.platform.annotations.gwt.client.model.Container; 029import org.nuxeo.ecm.platform.annotations.gwt.client.util.XPointer; 030import org.nuxeo.ecm.platform.annotations.gwt.client.util.XPointerFactory; 031 032import com.google.gwt.xml.client.Document; 033import com.google.gwt.xml.client.Node; 034import com.google.gwt.xml.client.NodeList; 035import com.google.gwt.xml.client.XMLParser; 036 037/** 038 * @author Alexandre Russel 039 */ 040public class RDFParser { 041 042 private static final String r = "http://www.w3.org/1999/02/22-rdf-syntax-ns#"; 043 044 private static final String nx = "http://www.nuxeo.org/document/uid/"; 045 046 public List<Annotation> getAnnotationList(String response) { 047 List<Annotation> result = new ArrayList<Annotation>(); 048 Document document = XMLParser.parse(response); 049 Node root = document.getElementsByTagName("RDF").item(0); 050 NodeList nodeList = root.getChildNodes(); 051 for (int x = 0; x < nodeList.getLength(); x++) { 052 Annotation annotation = processAnnotation(nodeList.item(x)); 053 if (annotation != null) { 054 result.add(annotation); 055 } 056 } 057 return result; 058 } 059 060 public Annotation processAnnotation(Node item) { 061 if (item == null || item.getNamespaceURI() == null || item.getNodeName() == null) { 062 return null; 063 } 064 if (item.getNamespaceURI().equals(r) && item.getNodeName().endsWith(":Description")) { 065 String about = item.getAttributes().item(0).getNodeValue(); 066 String annotationUUID = about.substring(about.lastIndexOf(":") + 1); 067 return getAnnotation(annotationUUID, item.getChildNodes()); 068 } 069 return null; 070 } 071 072 public Annotation getAnnotation(String annotationUUID, NodeList list) { 073 Annotation annotation = new Annotation(annotationUUID); 074 Map<String, Statement> map = new HashMap<String, Statement>(); 075 Map<String, String> fields = new HashMap<String, String>(); 076 for (int x = 0; x < list.getLength(); x++) { 077 Node node = list.item(x); 078 if (node.getNodeName().equals("#text") || node.getNodeType() != Node.ELEMENT_NODE) { 079 continue; 080 } 081 if (node.getNamespaceURI().equals(nx)) { 082 String nodeName = node.getNodeName(); 083 String name = nodeName.substring(nodeName.indexOf(":") + 1); 084 if ("startContainer".equals(name)) { 085 annotation.setStartContainer(Container.fromString(node.getFirstChild().getNodeValue())); 086 continue; 087 } 088 if ("endContainer".equals(name)) { 089 annotation.setEndContainer(Container.fromString(node.getFirstChild().getNodeValue())); 090 continue; 091 } 092 fields.put(name, node.getFirstChild().getNodeValue()); 093 continue; 094 } 095 Statement statement = new Statement(node); 096 if (statement.getObject().equals("http://www.w3.org/2000/10/annotation-ns#Annotation")) { 097 continue; 098 } 099 map.put(statement.getPredicate(), statement); 100 } 101 annotation.setType(map.get(RDFConstant.R_TYPE).getObject()); 102 XPointer xpointer = XPointerFactory.getXPointer(map.get(RDFConstant.A_CONTEXT).getObject()); 103 104 annotation.setXpointer(xpointer); 105 if (map.containsKey(RDFConstant.H_BODY)) { 106 Statement s = map.get(RDFConstant.H_BODY); 107 annotation.setBody(parseXMLLiteralForBody(s.getObject())); 108 } else { 109 Statement bodyStatement = map.get(RDFConstant.A_BODY); 110 annotation.setBody(bodyStatement.getObject()); 111 if (bodyStatement.isResource()) { 112 annotation.setBodyUrl(true); 113 } 114 } 115 116 if (map.get(RDFConstant.D_CREATOR) != null && map.get(RDFConstant.D_CREATOR).getObject() != null) { 117 annotation.setAuthor(map.get(RDFConstant.D_CREATOR).getObject()); 118 } 119 if (map.get(RDFConstant.D_DATE) != null && map.get(RDFConstant.D_DATE).getObject() != null) { 120 annotation.setStringDate(map.get(RDFConstant.D_DATE).getObject()); 121 } 122 123 for (Map.Entry<String, Statement> entry : map.entrySet()) { 124 fields.put(entry.getKey(), entry.getValue().getObject()); 125 } 126 annotation.setFields(fields); 127 128 return annotation; 129 } 130 131 private String parseXMLLiteralForBody(String html) { 132 if (html.contains("<body>")) { 133 String body = "<body>"; 134 int beginIndex = html.indexOf(body) + body.length(); 135 int endIndex = html.indexOf("</body>"); 136 return html.substring(beginIndex, endIndex); 137 } else if (html.contains("<body>")) { 138 String body = "<body>"; 139 int beginIndex = html.indexOf(body) + body.length(); 140 int endIndex = html.indexOf("</body>"); 141 return html.substring(beginIndex, endIndex); 142 } 143 return ""; 144 } 145 146}