org.springone2gx_2011.integration.retry.RetryDemo.java Source code

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Here is the source code for org.springone2gx_2011.integration.retry.RetryDemo.java

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/*
 * Copyright 2002-2011 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.springone2gx_2011.integration.retry;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.integration.Message;
import org.springframework.integration.annotation.Payload;

/**
 * @author Oleg Zhurakousky
 * SpringOne2GX, Chicago 2011
 */
public class RetryDemo {

    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("retry-config.xml", RetryDemo.class);
        RetryGateway gateway = context.getBean(RetryGateway.class);
        String reply = gateway.process("a");
        System.out.println("Reply: " + reply);
    }

    public interface RetryGateway {
        public String process(String value);
    }

    public static class UpperCaser {
        public String toUpperCase(Message<?> value) {
            System.out.println("Will attempt to upper case value '" + value.getPayload() + "'");
            if (((String) value.getPayload()).length() > 4) {

                return ((String) value.getPayload()).toUpperCase();
            } else {
                System.out.println("Will retry");
                throw new IllegalArgumentException("Value is less than 4 characters");
            }
        }
    }

    public static class MyTransformer {
        public Object foo(@Payload(value = "#this.getFailedMessage().getPayload()") String payload) {
            return payload + " ";
        }
    }

}