Package org.springframework.messaging.core

Class AbstractMessageSendingTemplate<D>

java.lang.Object

org.springframework.messaging.core.AbstractMessageSendingTemplate<D>

Type Parameters:

D - the destination type

All Implemented Interfaces:

MessageSendingOperations<D>

Direct Known Subclasses:

AbstractMessageReceivingTemplate, SimpMessagingTemplate

public abstract class AbstractMessageSendingTemplate<D>
extends Object
implements MessageSendingOperations<D>

Abstract base class for implementations of MessageSendingOperations.

Since:

4.0

Author:

Mark Fisher, Rossen Stoyanchev, Stephane Nicoll

Field Summary

Fields

Modifier and Type	Field	Description
static final String	CONVERSION_HINT_HEADER	Name of the header that can be set to provide further information (for example, a MethodParameter instance) about the origin of the payload, to be taken into account as a conversion hint.
protected final Log	logger

Constructor Summary

Constructors

Constructor	Description
AbstractMessageSendingTemplate()

Method Summary

Modifier and Type	Method	Description
void	convertAndSend(D destination, Object payload)	Convert the given Object to serialized form, possibly using a MessageConverter, wrap it as a message and send it to the given destination.
void	convertAndSend(D destination, Object payload, Map<String,Object> headers)	Convert the given Object to serialized form, possibly using a MessageConverter, wrap it as a message with the given headers and send it to the given destination.
void	convertAndSend(D destination, Object payload, Map<String,Object> headers, MessagePostProcessor postProcessor)	Convert the given Object to serialized form, possibly using a MessageConverter, wrap it as a message with the given headers, apply the given post processor, and send the resulting message to the given destination.
void	convertAndSend(D destination, Object payload, MessagePostProcessor postProcessor)	Convert the given Object to serialized form, possibly using a MessageConverter, wrap it as a message, apply the given post processor, and send the resulting message to the given destination.
void	convertAndSend(Object payload)	Convert the given Object to serialized form, possibly using a MessageConverter, wrap it as a message and send it to a default destination.
void	convertAndSend(Object payload, MessagePostProcessor postProcessor)	Convert the given Object to serialized form, possibly using a MessageConverter, wrap it as a message, apply the given post processor, and send the resulting message to a default destination.
protected Message<?>	doConvert(Object payload, Map<String,Object> headers, MessagePostProcessor postProcessor)	Convert the given Object to serialized form, possibly using a MessageConverter, wrap it as a message with the given headers and apply the given post processor.
protected abstract void	doSend(D destination, Message<?> message)
D	getDefaultDestination()	Return the configured default destination.
MessageConverter	getMessageConverter()	Return the configured MessageConverter.
protected final D	getRequiredDefaultDestination()
protected Map<String,Object>	processHeadersToSend(Map<String,Object> headers)	Provides access to the map of input headers before a send operation.
void	send(D destination, Message<?> message)	Send a message to the given destination.
void	send(Message<?> message)	Send a message to a default destination.
void	setDefaultDestination(D defaultDestination)	Configure the default destination to use in send methods that don't have a destination argument.
void	setMessageConverter(MessageConverter messageConverter)	Set the MessageConverter to use in convertAndSend methods.

Methods inherited from class java.lang.Object

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

Field Details

CONVERSION_HINT_HEADER

public static final String CONVERSION_HINT_HEADER

Name of the header that can be set to provide further information (for example, a MethodParameter instance) about the origin of the payload, to be taken into account as a conversion hint.

Since:

4.2

See Also:

• Constant Field Values

logger

protected final Log logger

Constructor Details

AbstractMessageSendingTemplate

public AbstractMessageSendingTemplate()

Method Details

setDefaultDestination

public void setDefaultDestination(@Nullable
 D defaultDestination)

Configure the default destination to use in send methods that don't have a destination argument. If a default destination is not configured, send methods without a destination argument will raise an exception if invoked.

getDefaultDestination

@Nullable
public D getDefaultDestination()

Return the configured default destination.

setMessageConverter

public void setMessageConverter(MessageConverter messageConverter)

Set the MessageConverter to use in convertAndSend methods.

By default, SimpleMessageConverter is used.

Parameters:

messageConverter - the message converter to use

getMessageConverter

public MessageConverter getMessageConverter()

Return the configured MessageConverter.

send

public void send(Message<?> message)

Description copied from interface: MessageSendingOperations

Send a message to a default destination.

Specified by:

send in interface MessageSendingOperations<D>

Parameters:

message - the message to send

getRequiredDefaultDestination

protected final D getRequiredDefaultDestination()

send

public void send(D destination,
 Message<?> message)

Description copied from interface: MessageSendingOperations

Send a message to the given destination.

Specified by:

send in interface MessageSendingOperations<D>

Parameters:

destination - the target destination

message - the message to send

doSend

protected abstract void doSend(D destination,
 Message<?> message)

convertAndSend

public void convertAndSend(Object payload)
                    throws MessagingException

Description copied from interface: MessageSendingOperations

Convert the given Object to serialized form, possibly using a MessageConverter, wrap it as a message and send it to a default destination.

Specified by:

convertAndSend in interface MessageSendingOperations<D>

Parameters:

payload - the Object to use as payload

Throws:

MessagingException

convertAndSend

public void convertAndSend(D destination,
 Object payload)
                    throws MessagingException

Description copied from interface: MessageSendingOperations

Convert the given Object to serialized form, possibly using a MessageConverter, wrap it as a message and send it to the given destination.

Specified by:

convertAndSend in interface MessageSendingOperations<D>

Parameters:

destination - the target destination

payload - the Object to use as payload

Throws:

MessagingException

convertAndSend

public void convertAndSend(D destination,
 Object payload,
 @Nullable
 Map<String,Object> headers)
                    throws MessagingException

Description copied from interface: MessageSendingOperations

Convert the given Object to serialized form, possibly using a MessageConverter, wrap it as a message with the given headers and send it to the given destination.

Specified by:

convertAndSend in interface MessageSendingOperations<D>

Parameters:

destination - the target destination

payload - the Object to use as payload

headers - the headers for the message to send

Throws:

MessagingException

convertAndSend

public void convertAndSend(Object payload,
 @Nullable
 MessagePostProcessor postProcessor)
                    throws MessagingException

Description copied from interface: MessageSendingOperations

Convert the given Object to serialized form, possibly using a MessageConverter, wrap it as a message, apply the given post processor, and send the resulting message to a default destination.

Specified by:

convertAndSend in interface MessageSendingOperations<D>

Parameters:

payload - the Object to use as payload

postProcessor - the post processor to apply to the message

Throws:

MessagingException

convertAndSend

public void convertAndSend(D destination,
 Object payload,
 @Nullable
 MessagePostProcessor postProcessor)
                    throws MessagingException

Description copied from interface: MessageSendingOperations

Convert the given Object to serialized form, possibly using a MessageConverter, wrap it as a message, apply the given post processor, and send the resulting message to the given destination.

Specified by:

convertAndSend in interface MessageSendingOperations<D>

Parameters:

destination - the target destination

payload - the Object to use as payload

postProcessor - the post processor to apply to the message

Throws:

MessagingException

convertAndSend

public void convertAndSend(D destination,
 Object payload,
 @Nullable
 Map<String,Object> headers,
 @Nullable
 MessagePostProcessor postProcessor)
                    throws MessagingException

Description copied from interface: MessageSendingOperations

Convert the given Object to serialized form, possibly using a MessageConverter, wrap it as a message with the given headers, apply the given post processor, and send the resulting message to the given destination.

Specified by:

convertAndSend in interface MessageSendingOperations<D>

Parameters:

destination - the target destination

payload - the Object to use as payload

headers - the headers for the message to send

postProcessor - the post processor to apply to the message

Throws:

MessagingException

doConvert

protected Message<?> doConvert(Object payload,
 @Nullable
 Map<String,Object> headers,
 @Nullable
 MessagePostProcessor postProcessor)

Convert the given Object to serialized form, possibly using a MessageConverter, wrap it as a message with the given headers and apply the given post processor.

Parameters:

payload - the Object to use as payload

headers - the headers for the message to send

postProcessor - the post processor to apply to the message

Returns:

the converted message

processHeadersToSend

@Nullable
protected Map<String,Object> processHeadersToSend(@Nullable
 Map<String,Object> headers)

Provides access to the map of input headers before a send operation. Subclasses can modify the headers and then return the same or a different map.

This default implementation in this class returns the input map.

Parameters:

headers - the headers to send (or null if none)

Returns:

the actual headers to send (or null if none)