Package org.mule.config.spring.factories

Source Code of org.mule.config.spring.factories.MessageProcessorFilterPairFactoryBean

/*
* $Id: MessageProcessorFilterPairFactoryBean.java 20480 2010-12-07 03:59:28Z dfeist $
* --------------------------------------------------------------------------------------
* 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.config.spring.factories;

import org.mule.api.MuleContext;
import org.mule.api.context.MuleContextAware;
import org.mule.api.processor.MessageProcessor;
import org.mule.api.processor.MessageProcessorBuilder;
import org.mule.api.processor.MessageProcessorChainBuilder;
import org.mule.api.routing.filter.Filter;
import org.mule.processor.chain.DefaultMessageProcessorChainBuilder;
import org.mule.routing.MessageProcessorFilterPair;
import org.mule.routing.filters.AcceptAllFilter;
import org.mule.routing.filters.ExpressionFilter;

import java.util.List;

import org.springframework.beans.factory.FactoryBean;

public class MessageProcessorFilterPairFactoryBean implements FactoryBean, MuleContextAware
{
    private List<MessageProcessor> messageProcessors;
    private Filter filter = new ExpressionFilter();

    public void setFilter(Filter filter)
    {
        this.filter = filter;
    }

    public void setMessageProcessors(List<MessageProcessor> messageProcessors)
    {
        this.messageProcessors = messageProcessors;
    }

    public void setExpression(String expression)
    {
        ((ExpressionFilter) filter).setExpression(expression);
    }

    public void setEvaluator(String evaluator)
    {
        ((ExpressionFilter) filter).setEvaluator(evaluator);
    }

    public void setCustomEvaluator(String customEvaluator)
    {
        ((ExpressionFilter) filter).setCustomEvaluator(customEvaluator);
    }

    public Object getObject() throws Exception
    {
        MessageProcessorChainBuilder builder = new DefaultMessageProcessorChainBuilder();
        for (Object processor : messageProcessors)
        {
            if (processor instanceof MessageProcessor)
            {
                builder.chain((MessageProcessor) processor);
            }
            else if (processor instanceof MessageProcessorBuilder)
            {
                builder.chain((MessageProcessorBuilder) processor);
            }
            else
            {
                throw new IllegalArgumentException(
                    "MessageProcessorBuilder should only have MessageProcessor's or MessageProcessorBuilder's configured");
            }
        }
        return filter == null
                             ? new MessageProcessorFilterPair(builder.build(), AcceptAllFilter.INSTANCE)
                             : new MessageProcessorFilterPair(builder.build(), filter);
    }

    public Class<?> getObjectType()
    {
        return MessageProcessorFilterPair.class;
    }

    public boolean isSingleton()
    {
        return true;
    }

    public void setMuleContext(MuleContext context)
    {
        if (filter != null && filter instanceof MuleContextAware)
        {
            ((MuleContextAware) filter).setMuleContext(context);
        }
    }

}
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