plugins/org.eclipse.epp.installer.core/src/org/eclipse/epp/installer/internal/core/OperationProxyManager.java

package org.eclipse.epp.installer.internal.core;

import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import java.util.Map;

import org.eclipse.epp.installer.internal.core.operations.ProxyOperation;
import org.eclipse.epp.installer.internal.core.operations.StubOperation;


public class OperationProxyManager {
	private Map proxyStubMap = new HashMap();
	
	protected void registerOperationStub( Class proxyClass, Class operationStub ) {
		proxyStubMap.put( proxyClass, operationStub );
	}
	protected StubOperation resolveProxy( ProxyOperation operation ) {
		Class proxyClass = operation.getClass();
		if( proxyStubMap.containsKey(proxyClass)) {
			Class stubClass = (Class)proxyStubMap.get(proxyClass);
			try {
				Constructor ctr = stubClass.getConstructor( new Class[] {ProxyOperation.class});
				return (StubOperation)ctr.newInstance(new Object[] {operation});
				//return (StubOperation)stubClass.newInstance();
			}
			catch( InvocationTargetException ex ) {
				ex.printStackTrace();
			}
			catch( NoSuchMethodException ex ) {
				ex.printStackTrace();
			}
			catch( InstantiationException ex ) {
				ex.printStackTrace();
			}			
			catch( IllegalAccessException ex ) {
				ex.printStackTrace();
			}
		}
		return null;
	}
}