org.acme.echo.module.config.ModuleOutboundGatewayParser.java Source code

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Here is the source code for org.acme.echo.module.config.ModuleOutboundGatewayParser.java

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/*
 * Copyright 2002-2010 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.acme.echo.module.config;

import org.w3c.dom.Element;

import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.integration.config.xml.AbstractConsumerEndpointParser;
import org.springframework.integration.config.xml.IntegrationNamespaceUtils;

/**
 * Handles parsing module outbound-gateway
 *
 * @author Oleg Zhurakousky
 */
public class ModuleOutboundGatewayParser extends AbstractConsumerEndpointParser {

    @Override
    protected String getInputChannelAttributeName() {
        return "request-channel";
    }

    @Override
    protected BeanDefinitionBuilder parseHandler(Element element, ParserContext parserContext) {

        BeanDefinitionBuilder moduleContextBuilder = BeanDefinitionBuilder
                .genericBeanDefinition("org.springframework.context.support.ClassPathXmlApplicationContext");

        String namespaceUri = element.getNamespaceURI();
        String nsPrefix = namespaceUri.substring(namespaceUri.lastIndexOf('/') + 1);
        moduleContextBuilder.addConstructorArgValue("META-INF/spring/module/" + nsPrefix + "-module-context.xml");

        BeanDefinitionBuilder exchangerBuilder = BeanDefinitionBuilder
                .genericBeanDefinition("org.acme.echo.module.ModuleGatewayRequestExchanger");
        exchangerBuilder.addConstructorArgValue(moduleContextBuilder.getBeanDefinition());

        BeanDefinitionBuilder moduleHandlerBuilder = BeanDefinitionBuilder
                .genericBeanDefinition("org.acme.echo.module.ModuleGatewayMessageHandler");
        moduleHandlerBuilder.addConstructorArgValue(exchangerBuilder.getBeanDefinition());
        // TODO do we need to support error-channel at the module or should it be outside (I think we do)
        //IntegrationNamespaceUtils.setReferenceIfAttributeDefined(builder, element, "error-handler");
        IntegrationNamespaceUtils.setReferenceIfAttributeDefined(moduleHandlerBuilder, element, "reply-channel",
                "outputChannel");

        return moduleHandlerBuilder;
    }

}