/*
* Copyright 2014 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.springframework.integration.samples.si4demo.springone.c;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.integration.annotation.IntegrationComponentScan;
import org.springframework.integration.annotation.MessagingGateway;
import org.springframework.integration.annotation.ServiceActivator;
import org.springframework.integration.annotation.Transformer;
import org.springframework.integration.channel.DirectChannel;
import org.springframework.integration.config.EnableIntegration;
import org.springframework.integration.handler.ServiceActivatingHandler;
import org.springframework.integration.transformer.MessageTransformingHandler;
import org.springframework.integration.transformer.MethodInvokingTransformer;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.MessageHandler;
/**
*
* @author Gary Russell
*
*/
public class CNoXML {
public static void main(String[] args) throws Exception {
ConfigurableApplicationContext ctx =
new AnnotationConfigApplicationContext(CConfig.class);
System.out.println(ctx.getBean(FooService.class).foo("foo"));
ctx.close();
}
@MessagingGateway(defaultRequestChannel="foo")
public static interface FooService {
String foo(String request);
}
@Configuration
@EnableIntegration
@IntegrationComponentScan
public static class CConfig {
@Bean
public MessageChannel foo() {
return new DirectChannel();
}
@Transformer(inputChannel="foo")
@Bean
public MessageHandler transform() {
MessageTransformingHandler transformingHandler = new MessageTransformingHandler(new MethodInvokingTransformer(helpers(), "duplicate"));
transformingHandler.setOutputChannel(bar());
return transformingHandler;
}
@Bean
public MessageChannel bar() {
return new DirectChannel();
}
@ServiceActivator(inputChannel="bar")
@Bean
public MessageHandler service() {
return new ServiceActivatingHandler(new MethodInvokingTransformer(helpers(), "upper"));
}
@Bean
public MyHelpers helpers() {
return new MyHelpers();
}
}
public static class MyHelpers {
public String duplicate(String foo) {
return foo + foo;
}
public String upper(String foo) {
return foo.toUpperCase();
}
}
}