org.mule.module.extension.internal.runtime.resolver.NestedProcessorValueResolver Maven / Gradle / Ivy

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Default implementation of the Mule Extension API.

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/*
 * 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.module.extension.internal.runtime.resolver;

import org.mule.api.MuleEvent;
import org.mule.api.MuleException;
import org.mule.api.NestedProcessor;
import org.mule.api.processor.MessageProcessor;
import org.mule.processor.chain.NestedProcessorChain;

/**
 * A {@link ValueResolver} which wraps the given
 * {@link MuleEvent} in a {@link NestedProcessor}.
 * This resolver returns new instances per every invocation
 *
 * @since 3.7.0
 */
public final class NestedProcessorValueResolver implements ValueResolver
{

    private final MessageProcessor messageProcessor;

    public NestedProcessorValueResolver(MessageProcessor messageProcessor)
    {
        this.messageProcessor = messageProcessor;
    }

    /**
     * Returns a {@link NestedProcessor} that wraps the {@code event}
     *
     * @param event a {@link MuleEvent}
     * @return a {@link NestedProcessor}
     * @throws MuleException
     */
    @Override
    public NestedProcessor resolve(MuleEvent event) throws MuleException
    {
        return new NestedProcessorChain(event, event.getMuleContext(), messageProcessor);
    }

    /**
     * @return {@value true}
     */
    @Override
    public boolean isDynamic()
    {
        return true;
    }
}