/*
* $Id: InvokeExpressionEvaluator.java 20320 2010-11-24 15:03:31Z dfeist $
* --------------------------------------------------------------------------------------
* Copyright (c) MuleSource, Inc. All rights reserved. http://www.mulesource.com
*
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.module.ibeans.config;
import org.mule.api.MuleMessage;
import org.mule.api.expression.ExpressionEvaluator;
import org.mule.api.expression.ExpressionRuntimeException;
import org.mule.config.i18n.CoreMessages;
import java.util.Map;
import org.apache.commons.beanutils.MethodUtils;
/**
* TODO
*/
public class InvokeExpressionEvaluator implements ExpressionEvaluator
{
public Object evaluate(String expression, MuleMessage message)
{
int i = expression.indexOf(".");
String property;
String method;
if(i > -1)
{
property = expression.substring(0, i);
method = expression.substring(i+1);
}
else
{
throw new IllegalArgumentException();
}
Object[] args;
if(message.getPayload() instanceof Map)
{
args = ((Map)message.getPayload()).values().toArray(new Object[]{});
}
else if(message.getPayload().getClass().isArray())
{
args = (Object[]) message.getPayload();
}
else
{
args = new Object[]{message.getPayload()};
}
Object o = message.getInvocationProperty(property,null);
if(o!=null)
{
try
{
return MethodUtils.invokeMethod(o, method, args);
}
catch (Exception e)
{
throw new ExpressionRuntimeException(CoreMessages.failedToInvoke(expression), e);
}
}
else
{
throw new ExpressionRuntimeException(CoreMessages.expressionMalformed(expression, getName()));
}
}
public void setName(String name)
{
throw new UnsupportedOperationException("setName");
}
public String getName()
{
return "invoke";
}
}