Example usage for org.springframework.amqp.support.converter MessageConverter fromMessage

Introduction

In this page you can find the example usage for org.springframework.amqp.support.converter MessageConverter fromMessage.

Prototype

Object fromMessage(Message message) throws MessageConversionException;

Source Link

Document

Convert from a Message to a Java object.

Usage

From source file:amqp.spring.camel.component.SpringAMQPMessage.java

public static SpringAMQPMessage fromAMQPMessage(MessageConverter msgConverter,
        org.springframework.amqp.core.Message amqpMessage) {
    if (amqpMessage == null) {
        LOG.debug("Received NULL AMQP Message, returning null");
        return null;
    }//from  w  w w.j  a v  a 2 s  .  com

    SpringAMQPMessage message = new SpringAMQPMessage();

    //Restore the body based on the message converter provided
    if (amqpMessage.getBody() == null || amqpMessage.getBody().length == 0) {
        message.setBody(null);
    } else {
        if (LOG.isTraceEnabled()) {
            String asText = new String(amqpMessage.getBody());
            LOG.trace("Translating From AMQP Message: " + asText);
        }

        message.setBody(msgConverter.fromMessage(amqpMessage));
    }

    //Set & restore headers from AMQP
    message = SpringAMQPHeader.setBasicPropertiesToHeaders(message, amqpMessage);
    message = SpringAMQPHeader.copyHeaders(message, amqpMessage.getMessageProperties().getHeaders());

    return message;
}

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From source file:amqp.spring.converter.StringConverterTest.java

@Test
public void testConversion() throws Exception {
    TestObject testObject = new TestObject();
    testObject.setValue("TESTING");

    MessageProperties messageProperties = new MessageProperties();

    MessageConverter converter = new StringConverter();
    Message amqpMessage = converter.toMessage(testObject, messageProperties);
    Object newObject = converter.fromMessage(amqpMessage);

    Assert.assertEquals("TESTING", newObject);
}

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From source file:amqp.spring.converter.ContentTypeConverterFactory.java

@Override
public Object fromMessage(Message message) throws MessageConversionException {
    MessageProperties messageProperties = message.getMessageProperties();
    String contentType = messageProperties.getContentType();
    if (messageProperties == null)
        throw new MessageConversionException("Cannot decode a message with no properties!");

    MessageConverter converter = converters.get(contentType);
    if (converter == null) //Try to fall back
        converter = this.fallbackConverter;
    if (converter == null) //Can't even fall back, punt
        throw new MessageConversionException("Cannot find converter for content type of " + contentType);

    return converter.fromMessage(message);
}

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From source file:amqp.spring.converter.XStreamConverterTest.java

@Test
public void testConversion() throws Exception {
    TestObject testObject = new TestObject();
    testObject.setValue("TESTING");

    MessageProperties messageProperties = new MessageProperties();

    MessageConverter converter = new XStreamConverter();
    ((XStreamConverter) converter).setEncoding("UTF-8");
    Message amqpMessage = converter.toMessage(testObject, messageProperties);
    Assert.assertEquals("{\"amqp.spring.converter.XStreamConverterTest_-TestObject\":{\"value\":\"TESTING\"}}",
            new String(amqpMessage.getBody()));

    Object newObject = converter.fromMessage(amqpMessage);
    Assert.assertEquals(testObject, newObject);
    Assert.assertEquals("UTF-8", ((XStreamConverter) converter).getEncoding());
}

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From source file:org.springframework.amqp.rabbit.listener.adapter.AbstractAdaptableMessageListener.java

/**
 * Extract the message body from the given Rabbit message.
 * @param message the Rabbit <code>Message</code>
 * @return the content of the message, to be passed into the listener method as argument
 *///from   w ww . j ava  2s .c o  m
protected Object extractMessage(Message message) {
    MessageConverter converter = getMessageConverter();
    if (converter != null) {
        return converter.fromMessage(message);
    }
    return message;
}

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From source file:org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter.java

/**
 * Extract the message body from the given Rabbit message.
 * @param message the Rabbit <code>Message</code>
 * @return the content of the message, to be passed into the listener method as argument
 * @throws Exception if thrown by Rabbit API methods
 *///ww  w.  ja v a2s .c  om
protected Object extractMessage(Message message) throws Exception {
    MessageConverter converter = getMessageConverter();
    if (converter != null) {
        return converter.fromMessage(message);
    }
    return message;
}

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