package org.apache.flex.forks.velocity.runtime.parser.node;
/*
* Copyright 2000-2001,2004 The Apache Software Foundation.
*
* 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.
*/
import org.apache.flex.forks.velocity.context.InternalContextAdapter;
import org.apache.flex.forks.velocity.util.introspection.Introspector;
import java.lang.reflect.InvocationTargetException;
import org.apache.flex.forks.velocity.exception.MethodInvocationException;
import org.apache.flex.forks.velocity.runtime.RuntimeLogger;
/**
* Executor that simply tries to execute a get(key)
* operation. This will try to find a get(key) method
* for any type of object, not just objects that
* implement the Map interface as was previously
* the case.
*
* @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a>
* @version $Id: GetExecutor.java,v 1.8.4.1 2004/03/03 23:22:59 geirm Exp $
*/
public class GetExecutor extends AbstractExecutor
{
/**
* Container to hold the 'key' part of
* get(key).
*/
private Object[] args = new Object[1];
/**
* Default constructor.
*/
public GetExecutor(RuntimeLogger r, Introspector ispect, Class c, String key)
throws Exception
{
rlog = r;
args[0] = key;
method = ispect.getMethod(c, "get", args);
}
/**
* Execute method against context.
*/
public Object execute(Object o)
throws IllegalAccessException, InvocationTargetException
{
if (method == null)
return null;
return method.invoke(o, args);
}
/**
* Execute method against context.
*/
public Object OLDexecute(Object o, InternalContextAdapter context)
throws IllegalAccessException, MethodInvocationException
{
if (method == null)
return null;
try
{
return method.invoke(o, args);
}
catch(InvocationTargetException ite)
{
/*
* the method we invoked threw an exception.
* package and pass it up
*/
throw new MethodInvocationException(
"Invocation of method 'get(\"" + args[0] + "\")'"
+ " in " + o.getClass()
+ " threw exception "
+ ite.getTargetException().getClass(),
ite.getTargetException(), "get");
}
catch(IllegalArgumentException iae)
{
return null;
}
}
}