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package org.apache.velocity.runtime.parser.node;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.slf4j.Logger;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
/**
* Abstract class that is used to execute an arbitrary
* method that is in introspected. This is the superclass
* for the PutExecutor and SetPropertyExecutor.
*
* There really should be a superclass for this and AbstractExecutor (which should
* be refactored to GetExecutor) because they differ only in the execute() method.
*
* @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a>
* @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a>
* @author <a href="mailto:henning@apache.org">Henning P. Schmiedehausen</a>
* @version $Id$
* @since 1.5
*/
public abstract class SetExecutor
{
/** Class logger */
protected Logger log = null;
/**
* Method to be executed.
*/
private Method method = null;
/**
* Execute method against context.
* @param o
* @param value
* @return The result of the invocation.
* @throws IllegalAccessException
* @throws InvocationTargetException
*/
public abstract Object execute(Object o, Object value)
throws IllegalAccessException, InvocationTargetException;
/**
* Tell whether the executor is alive by looking
* at the value of the method.
* @return True if the executor is alive.
*/
public boolean isAlive()
{
return (method != null);
}
/**
* @return The method to invoke.
*/
public Method getMethod()
{
return method;
}
/**
* @param method
*/
protected void setMethod(final Method method)
{
this.method = method;
}
}
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