/*
* $Id: DefaultEntryPointResolverSet.java 20746 2010-12-15 14:20:27Z dirk.olmes $
* --------------------------------------------------------------------------------------
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.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.HashSet;
import java.util.LinkedHashSet;
import java.util.Set;
/**
* 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
{
private final Set<EntryPointResolver> entryPointResolvers = new LinkedHashSet<EntryPointResolver>(4);
public Object invoke(Object component, MuleEventContext context) throws Exception
{
Set<String> exceptions = new HashSet<String>();
for (EntryPointResolver resolver : entryPointResolvers)
{
InvocationResult result = resolver.invoke(component, context);
if (result.getState() == InvocationResult.State.SUCCESSFUL)
{
return result.getResult();
}
else
{
if (result.hasError())
{
exceptions.add(result.getErrorMessage());
}
}
}
throw new EntryPointNotFoundException(CollectionUtils.toString(exceptions, true));
}
/**
* @return the entry point resolves configured in this resolver set. Note that access to the
* set is not thread safe. Client code must take proper precautions to synchronize.
*/
public Set<EntryPointResolver> getEntryPointResolvers()
{
return entryPointResolvers;
}
public void setEntryPointResolvers(Set<EntryPointResolver> entryPointResolvers)
{
synchronized (this.entryPointResolvers)
{
this.entryPointResolvers.clear();
this.entryPointResolvers.addAll(entryPointResolvers);
}
}
public void addEntryPointResolver(EntryPointResolver resolver)
{
synchronized (entryPointResolvers)
{
this.entryPointResolvers.add(resolver);
}
}
public boolean removeEntryPointResolver(EntryPointResolver resolver)
{
synchronized (entryPointResolvers)
{
return this.entryPointResolvers.remove(resolver);
}
}
}