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/*
* $Id: DefaultEntryPointResolverSet.java 10529 2008-01-25 05:58:36Z 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.model.resolvers;
import org.mule.api.MuleEventContext;
import org.mule.api.model.EntryPointResolver;
import org.mule.api.model.EntryPointResolverSet;
import org.mule.api.model.InvocationResult;
import org.mule.util.CollectionUtils;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArrayList;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Provides the default implementation of an {@link org.mule.api.model.EntryPointResolverSet}
* It resolves a method to call on the given service when an event is received.
* This object maintains a set of Resolvers that will be used in order to resolve
* an entrypoint on a service object until one is found or until the set is
* exhausted.
*/
public class DefaultEntryPointResolverSet implements EntryPointResolverSet
{
protected final Log logger = LogFactory.getLog(getClass());
private final Set entryPointResolvers = new LinkedHashSet(4);
private List exceptions = new CopyOnWriteArrayList();
public Object invoke(Object component, MuleEventContext context) throws Exception
{
try
{
for (Iterator iterator = entryPointResolvers.iterator(); iterator.hasNext();)
{
EntryPointResolver resolver = (EntryPointResolver) iterator.next();
InvocationResult result = resolver.invoke(component, context);
if (result.getState() == InvocationResult.STATE_INVOKED_SUCESSFUL)
{
return result.getResult();
}
else
{
if (result.hasError())
{
exceptions.add(result.getErrorMessage());
}
}
}
throw new EntryPointNotFoundException(CollectionUtils.toString(exceptions, true));
}
finally
{
exceptions.clear();
}
}
public Set getEntryPointResolvers()
{
return entryPointResolvers;
}
public void setEntryPointResolvers(Set entryPointResolvers)
{
this.entryPointResolvers.clear();
this.entryPointResolvers.addAll(entryPointResolvers);
}
public void addEntryPointResolver(EntryPointResolver resolver)
{
synchronized (entryPointResolvers)
{
this.entryPointResolvers.add(resolver);
}
}
public boolean removeEntryPointResolver(EntryPointResolver resolver)
{
return this.entryPointResolvers.remove(resolver);
}
}
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