/* Copyright (c) 2001 - 2007 TOPP - www.openplans.org. All rights reserved.
* This code is licensed under the GPL 2.0 license, availible at the root
* application directory.
*/
package org.geoserver.ows.kvp;
import java.lang.reflect.Method;
import java.util.Iterator;
import java.util.Map;
import org.eclipse.emf.ecore.EFactory;
import org.eclipse.emf.ecore.EObject;
import org.geoserver.ows.KvpRequestReader;
import org.geoserver.ows.util.OwsUtils;
import org.geotools.xml.EMFUtils;
/**
* Web Feature Service Key Value Pair Request reader.
* <p>
* This request reader makes use of the Eclipse Modelling Framework
* reflection api.
* </p>
* @author Justin Deoliveira, The Open Planning Project
* @author Andrea Aime, TOPP
*
*/
public class EMFKvpRequestReader extends KvpRequestReader {
/**
* Factory used to create model objects / requests.
*/
protected EFactory factory;
/**
* Creates the Wfs Kvp Request reader.
*
* @param requestBean The request class, which must be an emf class.
*/
public EMFKvpRequestReader(Class requestBean, EFactory factory) {
super(requestBean);
//make sure an eobject is passed in
if (!EObject.class.isAssignableFrom(requestBean)) {
String msg = "Request bean must be an EObject";
throw new IllegalArgumentException(msg);
}
this.factory = factory;
}
/**
* Reflectivley creates the request bean instance.
*/
public Object createRequest() {
String className = getRequestBean().getName();
//strip off package
int index = className.lastIndexOf('.');
if (index != -1) {
className = className.substring(index + 1);
}
Method create = OwsUtils.method(factory.getClass(), "create" + className);
try {
return create.invoke(factory, null);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public Object read(Object request, Map kvp, Map rawKvp) throws Exception {
//use emf reflection
EObject eObject = (EObject) request;
for (Iterator e = kvp.entrySet().iterator(); e.hasNext();) {
Map.Entry entry = (Map.Entry) e.next();
String property = (String) entry.getKey();
Object value = entry.getValue();
//respect the filter
if ( filter( property ) ) {
continue;
}
if (EMFUtils.has(eObject, property)) {
//check for a collection
if ( EMFUtils.isCollection(eObject, property) ) {
EMFUtils.add(eObject, property, value);
}
else {
EMFUtils.set(eObject, property, value);
}
}
}
return request;
}
}