org.apache.activemq.transport

Class ResponseCorrelator

java.lang.Object

org.apache.activemq.transport.TransportFilter

org.apache.activemq.transport.ResponseCorrelator

All Implemented Interfaces:

Service, Transport, TransportListener

Direct Known Subclasses:

ReliableTransport

public class ResponseCorrelator
extends TransportFilter

Adds the incrementing sequence number to commands along with performing the correlation of responses to requests to create a blocking request-response semantics.

Field Summary

Fields inherited from class org.apache.activemq.transport.TransportFilter

next, transportListener

Constructor Summary

Constructors

Constructor and Description
ResponseCorrelator(Transport next)
ResponseCorrelator(Transport next, IntSequenceGenerator sequenceGenerator)

Method Summary

Modifier and Type	Method and Description
FutureResponse	asyncRequest(Object o, ResponseCallback responseCallback) An asynchronous request response where the Receipt will be returned in the future.
IntSequenceGenerator	getSequenceGenerator()
void	onCommand(Object o) called to process a command
void	oneway(Object o) A one way asynchronous send
void	onException(IOException error) If an async exception occurs, then assume no responses will arrive for any of current requests.
Object	request(Object command) A synchronous request response
Object	request(Object command, int timeout) A synchronous request response
void	stop()
String	toString()

Methods inherited from class org.apache.activemq.transport.TransportFilter

getNext, getPeerCertificates, getReceiveCounter, getRemoteAddress, getTransportListener, getWireFormat, isConnected, isDisposed, isFaultTolerant, isReconnectSupported, isUpdateURIsSupported, narrow, reconnect, setPeerCertificates, setTransportListener, start, transportInterupted, transportResumed, updateURIs

Methods inherited from class java.lang.Object

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

Constructor Detail

ResponseCorrelator

public ResponseCorrelator(Transport next)

ResponseCorrelator

public ResponseCorrelator(Transport next,
                          IntSequenceGenerator sequenceGenerator)

Method Detail

oneway

public void oneway(Object o)
            throws IOException

Description copied from interface: Transport

A one way asynchronous send

Specified by:

oneway in interface Transport

Overrides:

oneway in class TransportFilter

Throws:

IOException

asyncRequest

public FutureResponse asyncRequest(Object o,
                                   ResponseCallback responseCallback)
                            throws IOException

Description copied from interface: Transport

An asynchronous request response where the Receipt will be returned in the future. If responseCallback is not null, then it will be called when the response has been completed.

Specified by:

asyncRequest in interface Transport

Overrides:

asyncRequest in class TransportFilter

responseCallback - TODO

Returns:

the FutureResponse

Throws:

IOException

request

public Object request(Object command)
               throws IOException

Description copied from interface: Transport

A synchronous request response

Specified by:

request in interface Transport

Overrides:

request in class TransportFilter

Returns:

the response

Throws:

IOException

request

public Object request(Object command,
                      int timeout)
               throws IOException

Description copied from interface: Transport

A synchronous request response

Specified by:

request in interface Transport

Overrides:

request in class TransportFilter

Returns:

the repsonse or null if timeout

Throws:

IOException

onCommand

public void onCommand(Object o)

Description copied from interface: TransportListener

called to process a command

Specified by:

onCommand in interface TransportListener

Overrides:

onCommand in class TransportFilter

onException

public void onException(IOException error)

If an async exception occurs, then assume no responses will arrive for any of current requests. Lets let them know of the problem.

Specified by:

onException in interface TransportListener

Overrides:

onException in class TransportFilter

stop

public void stop()
          throws Exception

Specified by:

stop in interface Service

Overrides:

stop in class TransportFilter

Throws:

Exception

See Also:

Service.stop()

getSequenceGenerator

public IntSequenceGenerator getSequenceGenerator()

toString

public String toString()

Overrides:

toString in class TransportFilter