/* (c) 2014 Open Source Geospatial Foundation - all rights reserved
* (c) 2001 - 2013 OpenPlans
* This code is licensed under the GPL 2.0 license, available at the root
* application directory.
*/
package org.geoserver.ows.adapters;
import java.lang.reflect.Constructor;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.geoserver.config.ServiceInfo;
import org.geoserver.config.impl.GeoServerImpl;
import org.geoserver.ows.HttpServletRequestAware;
import org.vfny.geoserver.util.requests.readers.KvpRequestReader;
/**
* Wraps an old style {@link KvpRequestReader} in a new
* {@link org.geoserver.ows.KvpRequestReader}.
* <p>
* This class needs to be defined in a spring context like:
* <pre>
* <code>
* <bean id="getMapKvpReader" class="org.geoserver.ows.adapters.KvpRequestReaderAdapter">
* <!-- first argument is the request class -->
* <constructor-arg index="0" value="org.vfny.geoserver.wms.requests.GetMapRequest" />
*
* <!-- second argument is the old style kvp reader class -->
* <constructor-arg index="1" value="org.vfny.geoserver.wms.requests.GetMapKvpReader" />
*
* <!-- third argument is the old style service -->
* <constructor-arg index="2" ref="wmsService" />
* <bean>
* </code>
* </pre>
* </p>
*
* @author Justin Deoliveira, The Open Planning Project, jdeolive@openplans.org
*
*/
public class KvpRequestReaderAdapter extends org.geoserver.ows.KvpRequestReader
implements HttpServletRequestAware {
Class delegateClass;
ServiceInfo service;
HttpServletRequest request;
public KvpRequestReaderAdapter(Class requestBean, Class delegateClass, ServiceInfo service) {
super(requestBean);
this.delegateClass = delegateClass;
this.service = service;
}
public void setHttpRequest(HttpServletRequest request) {
this.request = request;
}
public Object createRequest() throws Exception {
//simulate the old kvp processin
Map kvp = new HashMap();
String paramName;
String paramValue;
for (Enumeration pnames = request.getParameterNames(); pnames.hasMoreElements();) {
paramName = (String) pnames.nextElement();
paramValue = request.getParameter(paramName);
kvp.put(paramName.toUpperCase(), paramValue);
}
//look for a constructor, may have to walk up teh class hierachy
Class clazz = GeoServerImpl.unwrap(service).getClass();
Constructor constructor = null;
while (clazz != null && constructor == null) {
try {
constructor = delegateClass.getConstructor(new Class[] { Map.class, clazz });
} catch (NoSuchMethodException e) {
Class[] classes = clazz.getInterfaces();
for (Class c : classes) {
try {
constructor = delegateClass.getConstructor(new Class[] { Map.class, c });
} catch(NoSuchMethodException e2) {
// no harm done
}
}
clazz = clazz.getSuperclass();
}
}
if (constructor == null) {
throw new IllegalStateException("No appropriate constructor");
}
//create an instance of the delegate
KvpRequestReader delegate = (KvpRequestReader) constructor.newInstance(new Object[] {
kvp, service
});
//create the request object
return delegate.getRequest(request);
}
public Object read(Object request, Map kvp, Map rawKvp) throws Exception {
//request object already initialized, just send it back
return request;
}
}