Package org.springframework.amqp.support.converter

Class ContentTypeDelegatingMessageConverter

java.lang.Object

org.springframework.amqp.support.converter.ContentTypeDelegatingMessageConverter

All Implemented Interfaces:

MessageConverter

public class ContentTypeDelegatingMessageConverter
extends Object
implements MessageConverter

A composite MessageConverter that delegates to an actual MessageConverter based on the contentType header. Supports a default converter when no content type matches. Note: the MessageProperties requires a content type header to select a converter when used for outbound conversion, but the converter will (generally) override it to match the actual conversion.

Since:

1.4.2

Author:

Eric Rizzo, Gary Russell, Artem Bilan

Constructor Summary

Constructors

Constructor	Description
ContentTypeDelegatingMessageConverter()	Constructs an instance using a default SimpleMessageConverter.
ContentTypeDelegatingMessageConverter(MessageConverter defaultConverter)	Constructs an instance using a the supplied default converter.

Method Summary

Modifier and Type	Method	Description
void	addDelegate(String contentType, MessageConverter messageConverter)	Add a delegate converter for the content type.
Object	fromMessage(Message message)	Convert from a Message to a Java object.
protected MessageConverter	getConverterForContentType(String contentType)
Map<String,MessageConverter>	getDelegates()
MessageConverter	removeDelegate(String contentType)	Remove the delegate for the content type.
void	setDelegates(Map<String,MessageConverter> delegatesByContentType)
Message	toMessage(Object object, MessageProperties messageProperties)	Convert a Java object to a Message.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.springframework.amqp.support.converter.MessageConverter

toMessage

Constructor Details

ContentTypeDelegatingMessageConverter

public ContentTypeDelegatingMessageConverter()

Constructs an instance using a default SimpleMessageConverter.

ContentTypeDelegatingMessageConverter

public ContentTypeDelegatingMessageConverter(MessageConverter defaultConverter)

Constructs an instance using a the supplied default converter. May be null meaning a strict content-type match is required.

Parameters:

defaultConverter - the converter.

Method Details

setDelegates

public void setDelegates(Map<String,MessageConverter> delegatesByContentType)

getDelegates

public Map<String,MessageConverter> getDelegates()

addDelegate

public void addDelegate(String contentType,
 MessageConverter messageConverter)

Add a delegate converter for the content type.

Parameters:

contentType - the content type to check.

messageConverter - the MessageConverter for the content type.

Since:

1.6

removeDelegate

public MessageConverter removeDelegate(String contentType)

Remove the delegate for the content type.

Parameters:

contentType - the content type key to remove MessageConverter from delegates.

Returns:

the remove MessageConverter.

fromMessage

public Object fromMessage(Message message)
                   throws MessageConversionException

Description copied from interface: MessageConverter

Convert from a Message to a Java object.

Specified by:

fromMessage in interface MessageConverter

Parameters:

message - the message to convert

Returns:

the converted Java object

Throws:

MessageConversionException - in case of conversion failure

toMessage

public Message toMessage(Object object,
 MessageProperties messageProperties)

Description copied from interface: MessageConverter

Convert a Java object to a Message.

Specified by:

toMessage in interface MessageConverter

Parameters:

object - the object to convert

messageProperties - The message properties.

Returns:

the Message

getConverterForContentType

protected MessageConverter getConverterForContentType(String contentType)