/*
* Copyright 2004 Sun Microsystems, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package com.sun.syndication.io.impl;
import com.sun.syndication.feed.module.DCModuleImpl;
import com.sun.syndication.feed.module.DCSubjectImpl;
import com.sun.syndication.feed.module.Module;
import com.sun.syndication.feed.module.DCModule;
import com.sun.syndication.feed.module.DCSubject;
import com.sun.syndication.io.ModuleParser;
import org.jdom.Attribute;
import org.jdom.Element;
import org.jdom.Namespace;
import java.util.ArrayList;
import java.util.List;
public class DCModuleParser implements ModuleParser {
public String getNamespaceUri() {
return DCModule.URI;
}
private Namespace getDCNamespace() {
return Namespace.getNamespace(DCModule.URI);
}
public Module parse(Element dcRoot) {
boolean foundSomething = false;
DCModule dcm = new DCModuleImpl();
Element e = dcRoot.getChild("title",getDCNamespace());
if (e!=null) {
foundSomething = true;
dcm.setTitle(e.getText());
}
e = dcRoot.getChild("creator",getDCNamespace());
if (e!=null) {
foundSomething = true;
dcm.setCreator(e.getText());
}
List eList = dcRoot.getChildren("subject",getDCNamespace());
if (eList.size()>0) {
foundSomething = true;
dcm.setSubjects(parseSubjects(eList));
}
e = dcRoot.getChild("description",getDCNamespace());
if (e!=null) {
foundSomething = true;
dcm.setDescription(e.getText());
}
e = dcRoot.getChild("publisher",getDCNamespace());
if (e!=null) {
foundSomething = true;
dcm.setPublisher(e.getText());
}
eList = dcRoot.getChildren("contributor",getDCNamespace());
if (eList.size()>0) {
foundSomething = true;
dcm.setContributors(parseContributors(eList));
}
e = dcRoot.getChild("date",getDCNamespace());
if (e!=null) {
foundSomething = true;
dcm.setDate(DateParser.parseW3CDateTime(e.getText()));
}
e = dcRoot.getChild("type",getDCNamespace());
if (e!=null) {
foundSomething = true;
dcm.setType(e.getText());
}
e = dcRoot.getChild("format",getDCNamespace());
if (e!=null) {
foundSomething = true;
dcm.setFormat(e.getText());
}
e = dcRoot.getChild("identifier",getDCNamespace());
if (e!=null) {
foundSomething = true;
dcm.setIdentifier(e.getText());
}
e = dcRoot.getChild("source",getDCNamespace());
if (e!=null) {
foundSomething = true;
dcm.setSource(e.getText());
}
e = dcRoot.getChild("language",getDCNamespace());
if (e!=null) {
foundSomething = true;
dcm.setLanguage(e.getText());
}
e = dcRoot.getChild("relation",getDCNamespace());
if (e!=null) {
foundSomething = true;
dcm.setRelation(e.getText());
}
e = dcRoot.getChild("coverage",getDCNamespace());
if (e!=null) {
foundSomething = true;
dcm.setCoverage(e.getText());
}
e = dcRoot.getChild("rights",getDCNamespace());
if (e!=null) {
foundSomething = true;
dcm.setRights(e.getText());
}
return (foundSomething) ? dcm : null;
}
private static final String RDF_URI = "http://www.w3.org/1999/02/22-rdf-syntax-ns#";
private static final String TAXO_URI = "http://purl.org/rss/1.0/modules/taxonomy/";
private String getTaxonomy(Element desc) {
String d = null;
Element taxo = desc.getChild("topic",Namespace.getNamespace(TAXO_URI));
if (taxo!=null) {
Attribute a = taxo.getAttribute("resource",Namespace.getNamespace((RDF_URI)));
if (a!=null) {
d = a.getValue();
}
}
return d;
}
private List parseSubjects(List eList) {
List subjects = new ArrayList();
for (int i=0;i<eList.size();i++) {
Element eSubject = (Element) eList.get(i);
Element eDesc = eSubject.getChild("Description",Namespace.getNamespace(RDF_URI));
if (eDesc!=null) {
String taxonomy = getTaxonomy(eDesc);
List eValues = eDesc.getChildren("value",Namespace.getNamespace(RDF_URI));
for (int j=0;j<eValues.size();j++) {
Element eValue = (Element) eValues.get(j);
DCSubject subject = new DCSubjectImpl();
subject.setTaxonomyUri(taxonomy);;
subject.setValue(eValue.getText());
subjects.add(subject);
}
}
else {
DCSubject subject = new DCSubjectImpl();
subject.setValue(eSubject.getText());
subjects.add(subject);
}
}
return subjects;
}
private List parseContributors(List eList) {
List contributors = new ArrayList();
for (int i=0;i<eList.size();i++) {
Element e = (Element) eList.get(i);
contributors.add(e.getText());
}
return contributors;
}
}