/*****************************************************************************
* Copyright (C) NanoContainer Organization. All rights reserved. *
* ------------------------------------------------------------------------- *
* The software in this package is published under the terms of the BSD *
* style license a copy of which has been included with this distribution in *
* the LICENSE.txt file. *
* *
*****************************************************************************/
package org.nanocontainer.nanowar.axis;
import org.apache.axis.MessageContext;
import org.apache.axis.providers.java.RPCProvider;
import org.apache.axis.transport.http.HTTPConstants;
import org.apache.axis.utils.cache.ClassCache;
import org.nanocontainer.nanowar.KeyConstants;
import org.nanocontainer.nanowar.RequestScopeObjectReference;
import org.picocontainer.MutablePicoContainer;
import org.picocontainer.defaults.DefaultPicoContainer;
import org.picocontainer.defaults.ObjectReference;
import javax.servlet.http.HttpServletRequest;
/**
* Axis provider for RPC-style services that uses the servlet container
* hierarchy to instantiate service classes and resolve their dependencies.
*
* @author <a href="mailto:evan@bottch.com">Evan Bottcher</a>
*/
public class NanoRPCProvider extends RPCProvider implements KeyConstants {
protected Object makeNewServiceObject(
MessageContext msgContext,
String clsName)
throws Exception {
ClassLoader cl = msgContext.getClassLoader();
ClassCache cache = msgContext.getAxisEngine().getClassCache();
Class svcClass = cache.lookup(clsName, cl).getJavaClass();
return instantiateService(svcClass, msgContext);
}
private Object instantiateService(Class svcClass, MessageContext msgContext) {
HttpServletRequest request = (HttpServletRequest)msgContext.getProperty(HTTPConstants.MC_HTTP_SERVLETREQUEST);
ObjectReference ref = new RequestScopeObjectReference(request, REQUEST_CONTAINER);
MutablePicoContainer requestContainer = (MutablePicoContainer) ref.get();
MutablePicoContainer container = new DefaultPicoContainer(requestContainer);
container.registerComponentImplementation(svcClass);
return container.getComponentInstance(svcClass);
}
}