/*
* ItemParser.java
*
* Created on April 29, 2006, 4:27 PM
*
* 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 org.rometools.feed.module.sle.io;
import com.sun.syndication.feed.module.Module;
import org.rometools.feed.module.sle.SleEntryImpl;
import org.rometools.feed.module.sle.types.DateValue;
import org.rometools.feed.module.sle.types.EntryValue;
import org.rometools.feed.module.sle.types.NumberValue;
import org.rometools.feed.module.sle.types.Sort;
import org.rometools.feed.module.sle.types.StringValue;
import com.sun.syndication.io.impl.DateParser;
import org.jdom2.Element;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.jdom2.Namespace;
/**
*
* @author <a href="mailto:cooper@screaming-penguin.com">Robert "kebernet" Cooper</a>
*/
public class ItemParser implements com.sun.syndication.io.ModuleParser {
/** Creates a new instance of ItemParser */
public ItemParser() {
super();
}
/**
* Returns the namespace URI this parser handles.
* <p>
*
* @return the namespace URI.
*/
public String getNamespaceUri() {
return ModuleParser.TEMP.getURI();
}
/**
* Parses the XML node (JDOM element) extracting module information.
* <p>
*
* @param element the XML node (JDOM element) to extract module information from.
* @return a module instance, <b>null</b> if the element did not have module information.
*/
public Module parse(Element element) {
SleEntryImpl sle = new SleEntryImpl();
ArrayList values = new ArrayList();
List groups = element.getChildren("group", ModuleParser.TEMP);
for (int i = 0; (groups != null) && (i < groups.size()); i++) {
Element group = (Element) groups.get(i);
StringValue value = new StringValue();
value.setElement(group.getAttributeValue("element"));
value.setLabel(group.getAttributeValue("label"));
value.setValue(group.getAttributeValue("value"));
if( group.getAttributeValue("ns") != null )
value.setNamespace( Namespace.getNamespace(group.getAttributeValue("ns")));
else {
value.setNamespace( element.getDocument().getRootElement().getNamespace());
}
values.add(value);
element.removeContent(group);
}
sle.setGroupValues((EntryValue[]) values.toArray(new EntryValue[values.size()]));
values = (values.size() == 0) ? values : new ArrayList();
List sorts = new ArrayList(element.getChildren("sort", ModuleParser.TEMP));
//System.out.println("]]] sorts on element"+sorts.size());
for (int i = 0; (sorts != null) && (i < sorts.size()); i++) {
Element sort = (Element) sorts.get(i);
String dataType = sort.getAttributeValue("data-type");
//System.out.println("Doing datatype "+dataType +" :: "+sorts.size());
if ((dataType == null) || dataType.equals(Sort.TEXT_TYPE)) {
StringValue value = new StringValue();
value.setElement(sort.getAttributeValue("element"));
value.setLabel(sort.getAttributeValue("label"));
value.setValue(sort.getAttributeValue("value"));
if( sort.getAttributeValue("ns") != null )
value.setNamespace(Namespace.getNamespace(sort.getAttributeValue("ns")));
else
value.setNamespace(element.getDocument().getRootElement().getNamespace() );
values.add(value);
element.removeContent(sort);
} else if (dataType.equals(Sort.DATE_TYPE)) {
DateValue value = new DateValue();
value.setElement(sort.getAttributeValue("element"));
value.setLabel(sort.getAttributeValue("label"));
if( sort.getAttributeValue("ns") != null )
value.setNamespace(Namespace.getNamespace(sort.getAttributeValue("ns")));
else
value.setNamespace( element.getDocument().getRootElement().getNamespace() );
Date dateValue = null;
try {
dateValue = DateParser.parseRFC822(sort.getAttributeValue("value"));
dateValue = (dateValue == null) ? DateParser.parseW3CDateTime(sort.getAttributeValue("value")) : dateValue;
} catch (Exception e) {
; // ignore parse exceptions
}
value.setValue(dateValue);
values.add(value);
element.removeContent(sort);
} else if (dataType.equals(Sort.NUMBER_TYPE)) {
NumberValue value = new NumberValue();
value.setElement(sort.getAttributeValue("element"));
value.setLabel(sort.getAttributeValue("label"));
if( sort.getAttributeValue("ns") != null )
value.setNamespace(Namespace.getNamespace(sort.getAttributeValue("ns")));
else
value.setNamespace( element.getDocument().getRootElement().getNamespace() );
try {
value.setValue(new BigDecimal(sort.getAttributeValue("value")));
} catch (NumberFormatException nfe) {
; // ignore
values.add(value);
element.removeContent(sort);
}
} else {
throw new RuntimeException("Unknown datatype");
}
}
//System.out.println("Values created "+values.size()+" from sorts" +sorts.size());
sle.setSortValues((EntryValue[]) values.toArray(new EntryValue[values.size()]));
return sle;
}
}