com.rabbitmq.client
Interface Channel

All Superinterfaces:

ShutdownNotifier

All Known Implementing Classes:

ChannelN

public interface Channel
extends ShutdownNotifier

Public API: Interface to an AMQ channel. See the spec for details.

To open a channel,

 Connection conn = ...;
 Channel channel = conn.createChannel();
 

Public API:

• getChannelNumber
• close

While a Channel can be used by multiple threads, it's important to ensure that only one thread executes a command at once. Concurrent execution of commands will likely cause an UnexpectedFrameError to be thrown.

Method Summary

void	abort() Abort this channel with the AMQP.REPLY_SUCCESS close code and message 'OK'.
void	abort(int closeCode, java.lang.String closeMessage) Abort this channel.
void	basicAck(long deliveryTag, boolean multiple) Acknowledge one or several received messages.
void	basicCancel(java.lang.String consumerTag) Cancel a consumer.
java.lang.String	basicConsume(java.lang.String queue, boolean noAck, Consumer callback) Start a non-nolocal, non-exclusive consumer, with a server-generated consumerTag.
java.lang.String	basicConsume(java.lang.String queue, boolean noAck, java.lang.String consumerTag, boolean noLocal, boolean exclusive, java.util.Map<java.lang.String,java.lang.Object> arguments, Consumer callback) Start a consumer.
java.lang.String	basicConsume(java.lang.String queue, boolean noAck, java.lang.String consumerTag, Consumer callback) Start a non-nolocal, non-exclusive consumer.
java.lang.String	basicConsume(java.lang.String queue, Consumer callback) Start a non-nolocal, non-exclusive consumer, with explicit acknowledgements required and a server-generated consumerTag.
GetResponse	basicGet(java.lang.String queue, boolean noAck) Retrieve a message from a queue using AMQP.Basic.Get
void	basicPublish(java.lang.String exchange, java.lang.String routingKey, AMQP.BasicProperties props, byte[] body) Publish a message with both "mandatory" and "immediate" flags set to false
void	basicPublish(java.lang.String exchange, java.lang.String routingKey, boolean mandatory, boolean immediate, AMQP.BasicProperties props, byte[] body) Publish a message
void	basicQos(int prefetchCount) Request a specific prefetchCount "quality of service" settings for this channel.
void	basicQos(int prefetchSize, int prefetchCount, boolean global) Request specific "quality of service" settings.
AMQP.Basic.RecoverOk	basicRecover(boolean requeue) Ask the broker to resend unacknowledged messages.
void	basicRecoverAsync(boolean requeue) Deprecated.
void	basicReject(long deliveryTag, boolean requeue) Reject a message.
void	close() Close this channel with the AMQP.REPLY_SUCCESS close code and message 'OK'.
void	close(int closeCode, java.lang.String closeMessage) Close this channel.
AMQP.Exchange.DeclareOk	exchangeDeclare(java.lang.String exchange, java.lang.String type) Actively declare a non-autodelete, non-durable exchange with no extra arguments
AMQP.Exchange.DeclareOk	exchangeDeclare(java.lang.String exchange, java.lang.String type, boolean durable) Actively declare a non-autodelete exchange with no extra arguments
AMQP.Exchange.DeclareOk	exchangeDeclare(java.lang.String exchange, java.lang.String type, boolean durable, boolean autoDelete, java.util.Map<java.lang.String,java.lang.Object> arguments) Declare an exchange, via an interface that allows the complete set of arguments.
AMQP.Exchange.DeclareOk	exchangeDeclarePassive(java.lang.String name) Declare an exchange passively; that is, check if the named exchange exists.
AMQP.Exchange.DeleteOk	exchangeDelete(java.lang.String exchange) Delete an exchange, without regard for whether it is in use or not
AMQP.Exchange.DeleteOk	exchangeDelete(java.lang.String exchange, boolean ifUnused) Delete an exchange
AMQP.Channel.FlowOk	flow(boolean active) Set flow on the channel
int	getChannelNumber() Retrieve this channel's channel number.
Connection	getConnection() Retrieve the connection which carries this channel.
Consumer	getDefaultConsumer() Get the current default consumer.
AMQP.Channel.FlowOk	getFlow() Return the current Channel.Flow settings.
FlowListener	getFlowListener() Return the current FlowListener.
ReturnListener	getReturnListener() Return the current ReturnListener.
AMQP.Queue.BindOk	queueBind(java.lang.String queue, java.lang.String exchange, java.lang.String routingKey) Bind a queue to an exchange, with no extra arguments.
AMQP.Queue.BindOk	queueBind(java.lang.String queue, java.lang.String exchange, java.lang.String routingKey, java.util.Map<java.lang.String,java.lang.Object> arguments) Bind a queue to an exchange.
AMQP.Queue.DeclareOk	queueDeclare() Actively declare a server-named exclusive, autodelete, non-durable queue.
AMQP.Queue.DeclareOk	queueDeclare(java.lang.String queue, boolean durable, boolean exclusive, boolean autoDelete, java.util.Map<java.lang.String,java.lang.Object> arguments) Declare a queue
AMQP.Queue.DeclareOk	queueDeclarePassive(java.lang.String queue) Declare a queue passively; i.e., check if it exists.
AMQP.Queue.DeleteOk	queueDelete(java.lang.String queue) Delete a queue, without regard for whether it is in use or has messages on it
AMQP.Queue.DeleteOk	queueDelete(java.lang.String queue, boolean ifUnused, boolean ifEmpty) Delete a queue
AMQP.Queue.PurgeOk	queuePurge(java.lang.String queue) Purges the contents of the given queue.
AMQP.Queue.UnbindOk	queueUnbind(java.lang.String queue, java.lang.String exchange, java.lang.String routingKey) Unbinds a queue from an exchange, with no extra arguments.
AMQP.Queue.UnbindOk	queueUnbind(java.lang.String queue, java.lang.String exchange, java.lang.String routingKey, java.util.Map<java.lang.String,java.lang.Object> arguments) Unbind a queue from an exchange.
void	setDefaultConsumer(Consumer consumer) Set the current default consumer.
void	setFlowListener(FlowListener listener) Set the current FlowListener.
void	setReturnListener(ReturnListener listener) Set the current ReturnListener.
AMQP.Tx.CommitOk	txCommit() Commits a TX transaction on this channel.
AMQP.Tx.RollbackOk	txRollback() Rolls back a TX transaction on this channel.
AMQP.Tx.SelectOk	txSelect() Enables TX mode on this channel.

Methods inherited from interface com.rabbitmq.client.ShutdownNotifier

addShutdownListener, getCloseReason, isOpen, notifyListeners, removeShutdownListener

Method Detail

getChannelNumber

int getChannelNumber()

Retrieve this channel's channel number.

Returns:

the channel number

getConnection

Connection getConnection()

Retrieve the connection which carries this channel.

Returns:

the underlying Connection

close

void close()
           throws java.io.IOException

Close this channel with the AMQP.REPLY_SUCCESS close code and message 'OK'.

Throws:

java.io.IOException - if an error is encountered

close

void close(int closeCode,
           java.lang.String closeMessage)
           throws java.io.IOException

Close this channel.

Parameters:

closeCode - the close code (See under "Reply Codes" in the AMQP specification)

closeMessage - a message indicating the reason for closing the connection

Throws:

java.io.IOException - if an error is encountered

flow

AMQP.Channel.FlowOk flow(boolean active)
                         throws java.io.IOException

Set flow on the channel

Parameters:

active - if true, the server is asked to start sending. If false, the server is asked to stop sending.

Throws:

java.io.IOException

getFlow

AMQP.Channel.FlowOk getFlow()

Return the current Channel.Flow settings.

abort

void abort()
           throws java.io.IOException

Abort this channel with the AMQP.REPLY_SUCCESS close code and message 'OK'. Forces the channel to close and waits for the close operation to complete. Any encountered exceptions in the close operation are silently discarded.

Throws:

java.io.IOException

abort

void abort(int closeCode,
           java.lang.String closeMessage)
           throws java.io.IOException

Abort this channel. Forces the channel to close and waits for the close operation to complete. Any encountered exceptions in the close operation are silently discarded.

Throws:

java.io.IOException

getReturnListener

ReturnListener getReturnListener()

Return the current ReturnListener.

Returns:

an interface to the current return listener

setReturnListener

void setReturnListener(ReturnListener listener)

Set the current ReturnListener.

Parameters:

listener - the listener to use, or null indicating "don't use one".

getFlowListener

FlowListener getFlowListener()

Return the current FlowListener.

Returns:

an interface to the current flow listener.

setFlowListener

void setFlowListener(FlowListener listener)

Set the current FlowListener.

Parameters:

listener - the listener to use, or null indicating "don't use one".

getDefaultConsumer

Consumer getDefaultConsumer()

Get the current default consumer. @see setDefaultConsumer for rationale.

Returns:

an interface to the current default consumer.

setDefaultConsumer

void setDefaultConsumer(Consumer consumer)

Set the current default consumer. Under certain circumstances it is possible for a channel to receive a message delivery which does not match any consumer which is currently set up via basicConsume(). This will occur after the following sequence of events: ctag = basicConsume(queue, consumer); // i.e. with explicit acks // some deliveries take place but are not acked basicCancel(ctag); basicRecover(false); Since requeue is specified to be false in the basicRecover, the spec states that the message must be redelivered to "the original recipient" - i.e. the same channel / consumer-tag. But the consumer is no longer active. In these circumstances, you can register a default consumer to handle such deliveries. If no default consumer is registered an IllegalStateException will be thrown when such a delivery arrives. Most people will not need to use this.

Parameters:

consumer - the consumer to use, or null indicating "don't use one".

basicQos

void basicQos(int prefetchSize,
              int prefetchCount,
              boolean global)
              throws java.io.IOException

Request specific "quality of service" settings. These settings impose limits on the amount of data the server will deliver to consumers before requiring the receipt of acknowledgements. Thus they provide a means of consumer-initiated flow control.

Parameters:

prefetchSize - maximum amount of content (measured in octets) that the server will deliver, 0 if unlimited

prefetchCount - maximum number of messages that the server will deliver, 0 if unlimited

global - true if the settings should be applied to the entire connection rather than just the current channel

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Basic.Qos

basicQos

void basicQos(int prefetchCount)
              throws java.io.IOException

Request a specific prefetchCount "quality of service" settings for this channel.

Parameters:

prefetchCount - maximum number of messages that the server will deliver, 0 if unlimited

Throws:

java.io.IOException - if an error is encountered

See Also:

basicQos(int, int, boolean)

basicPublish

void basicPublish(java.lang.String exchange,
                  java.lang.String routingKey,
                  AMQP.BasicProperties props,
                  byte[] body)
                  throws java.io.IOException

Publish a message with both "mandatory" and "immediate" flags set to false

Parameters:

exchange - the exchange to publish the message to

routingKey - the routing key

props - other properties for the message - routing headers etc

body - the message body

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Basic.Publish

basicPublish

void basicPublish(java.lang.String exchange,
                  java.lang.String routingKey,
                  boolean mandatory,
                  boolean immediate,
                  AMQP.BasicProperties props,
                  byte[] body)
                  throws java.io.IOException

Publish a message

Parameters:

exchange - the exchange to publish the message to

routingKey - the routing key

mandatory - true if we are requesting a mandatory publish

immediate - true if we are requesting an immediate publish

props - other properties for the message - routing headers etc

body - the message body

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Basic.Publish

exchangeDeclare

AMQP.Exchange.DeclareOk exchangeDeclare(java.lang.String exchange,
                                        java.lang.String type)
                                        throws java.io.IOException

Actively declare a non-autodelete, non-durable exchange with no extra arguments

Parameters:

exchange - the name of the exchange

type - the exchange type

Returns:

a declaration-confirm method to indicate the exchange was successfully declared

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Exchange.Declare, AMQP.Exchange.DeclareOk

exchangeDeclare

AMQP.Exchange.DeclareOk exchangeDeclare(java.lang.String exchange,
                                        java.lang.String type,
                                        boolean durable)
                                        throws java.io.IOException

Actively declare a non-autodelete exchange with no extra arguments

Parameters:

exchange - the name of the exchange

type - the exchange type

durable - true if we are declaring a durable exchange (the exchange will survive a server restart)

Returns:

a declaration-confirm method to indicate the exchange was successfully declared

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Exchange.Declare, AMQP.Exchange.DeclareOk

exchangeDeclare

AMQP.Exchange.DeclareOk exchangeDeclare(java.lang.String exchange,
                                        java.lang.String type,
                                        boolean durable,
                                        boolean autoDelete,
                                        java.util.Map<java.lang.String,java.lang.Object> arguments)
                                        throws java.io.IOException

Declare an exchange, via an interface that allows the complete set of arguments.

Parameters:

exchange - the name of the exchange

type - the exchange type

durable - true if we are declaring a durable exchange (the exchange will survive a server restart)

autoDelete - true if the server should delete the exchange when it is no longer in use

arguments - other properties (construction arguments) for the exchange

Returns:

a declaration-confirm method to indicate the exchange was successfully declared

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Exchange.Declare, AMQP.Exchange.DeclareOk

exchangeDeclarePassive

AMQP.Exchange.DeclareOk exchangeDeclarePassive(java.lang.String name)
                                               throws java.io.IOException

Declare an exchange passively; that is, check if the named exchange exists.

Parameters:

name - check the existence of an exchange named this

Throws:

java.io.IOException - the server will raise a 404 channel exception if the named exchange does not exist.

exchangeDelete

AMQP.Exchange.DeleteOk exchangeDelete(java.lang.String exchange,
                                      boolean ifUnused)
                                      throws java.io.IOException

Delete an exchange

Parameters:

exchange - the name of the exchange

ifUnused - true to indicate that the exchange is only to be deleted if it is unused

Returns:

a deletion-confirm method to indicate the exchange was successfully deleted

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Exchange.Delete, AMQP.Exchange.DeleteOk

exchangeDelete

AMQP.Exchange.DeleteOk exchangeDelete(java.lang.String exchange)
                                      throws java.io.IOException

Delete an exchange, without regard for whether it is in use or not

Parameters:

exchange - the name of the exchange

Returns:

a deletion-confirm method to indicate the exchange was successfully deleted

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Exchange.Delete, AMQP.Exchange.DeleteOk

queueDeclare

AMQP.Queue.DeclareOk queueDeclare()
                                  throws java.io.IOException

Actively declare a server-named exclusive, autodelete, non-durable queue. The name of the new queue is held in the "queue" field of the AMQP.Queue.DeclareOk result.

Returns:

a declaration-confirm method to indicate the queue was successfully declared

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Queue.Declare, AMQP.Queue.DeclareOk

queueDeclare

AMQP.Queue.DeclareOk queueDeclare(java.lang.String queue,
                                  boolean durable,
                                  boolean exclusive,
                                  boolean autoDelete,
                                  java.util.Map<java.lang.String,java.lang.Object> arguments)
                                  throws java.io.IOException

Declare a queue

Parameters:

queue - the name of the queue

durable - true if we are declaring a durable queue (the queue will survive a server restart)

exclusive - true if we are declaring an exclusive queue (restricted to this connection)

autoDelete - true if we are declaring an autodelete queue (server will delete it when no longer in use)

arguments - other properties (construction arguments) for the queue

Returns:

a declaration-confirm method to indicate the queue was successfully declared

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Queue.Declare, AMQP.Queue.DeclareOk

queueDeclarePassive

AMQP.Queue.DeclareOk queueDeclarePassive(java.lang.String queue)
                                         throws java.io.IOException

Declare a queue passively; i.e., check if it exists. In AMQP 0-9-1, all arguments aside from nowait are ignored; and sending nowait makes this method a no-op, so we default it to false.

Parameters:

queue - the name of the queue

Returns:

a declaration-confirm method to indicate the queue exists

Throws:

java.io.IOException - if an error is encountered, including if the queue does not exist and if the queue is exclusively owned by another connection.

See Also:

AMQP.Queue.Declare, AMQP.Queue.DeclareOk

queueDelete

AMQP.Queue.DeleteOk queueDelete(java.lang.String queue)
                                throws java.io.IOException

Delete a queue, without regard for whether it is in use or has messages on it

Parameters:

queue - the name of the queue

Returns:

a deletion-confirm method to indicate the queue was successfully deleted

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Queue.Delete, AMQP.Queue.DeleteOk

queueDelete

AMQP.Queue.DeleteOk queueDelete(java.lang.String queue,
                                boolean ifUnused,
                                boolean ifEmpty)
                                throws java.io.IOException

Delete a queue

Parameters:

queue - the name of the queue

ifUnused - true if the queue should be deleted only if not in use

ifEmpty - true if the queue should be deleted only if empty

Returns:

a deletion-confirm method to indicate the queue was successfully deleted

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Queue.Delete, AMQP.Queue.DeleteOk

queueBind

AMQP.Queue.BindOk queueBind(java.lang.String queue,
                            java.lang.String exchange,
                            java.lang.String routingKey)
                            throws java.io.IOException

Bind a queue to an exchange, with no extra arguments.

Parameters:

queue - the name of the queue

exchange - the name of the exchange

routingKey - the routine key to use for the binding

Returns:

a binding-confirm method if the binding was successfully created

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Queue.Bind, AMQP.Queue.BindOk

queueBind

AMQP.Queue.BindOk queueBind(java.lang.String queue,
                            java.lang.String exchange,
                            java.lang.String routingKey,
                            java.util.Map<java.lang.String,java.lang.Object> arguments)
                            throws java.io.IOException

Bind a queue to an exchange.

Parameters:

queue - the name of the queue

exchange - the name of the exchange

routingKey - the routine key to use for the binding

arguments - other properties (binding parameters)

Returns:

a binding-confirm method if the binding was successfully created

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Queue.Bind, AMQP.Queue.BindOk

queueUnbind

AMQP.Queue.UnbindOk queueUnbind(java.lang.String queue,
                                java.lang.String exchange,
                                java.lang.String routingKey)
                                throws java.io.IOException

Unbinds a queue from an exchange, with no extra arguments.

Parameters:

queue - the name of the queue

exchange - the name of the exchange

routingKey - the routine key to use for the binding

Returns:

an unbinding-confirm method if the binding was successfully deleted

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Queue.Unbind, AMQP.Queue.UnbindOk

queueUnbind

AMQP.Queue.UnbindOk queueUnbind(java.lang.String queue,
                                java.lang.String exchange,
                                java.lang.String routingKey,
                                java.util.Map<java.lang.String,java.lang.Object> arguments)
                                throws java.io.IOException

Unbind a queue from an exchange.

Parameters:

queue - the name of the queue

exchange - the name of the exchange

routingKey - the routine key to use for the binding

arguments - other properties (binding parameters)

Returns:

an unbinding-confirm method if the binding was successfully deleted

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Queue.Unbind, AMQP.Queue.UnbindOk

queuePurge

AMQP.Queue.PurgeOk queuePurge(java.lang.String queue)
                              throws java.io.IOException

Purges the contents of the given queue.

Parameters:

queue - the name of the queue

Returns:

a purge-confirm method if the purge was executed succesfully

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Queue.Purge, AMQP.Queue.PurgeOk

basicGet

GetResponse basicGet(java.lang.String queue,
                     boolean noAck)
                     throws java.io.IOException

Retrieve a message from a queue using AMQP.Basic.Get

Parameters:

queue - the name of the queue

noAck - true if no handshake is required

Returns:

a GetResponse containing the retrieved message data

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Basic.Get, AMQP.Basic.GetOk, AMQP.Basic.GetEmpty

basicAck

void basicAck(long deliveryTag,
              boolean multiple)
              throws java.io.IOException

Acknowledge one or several received messages. Supply the deliveryTag from the AMQP.Basic.GetOk or AMQP.Basic.Deliver method containing the received message being acknowledged.

Parameters:

deliveryTag - the tag from the received AMQP.Basic.GetOk or AMQP.Basic.Deliver

multiple - true if we are acknowledging multiple messages with the same delivery tag

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Basic.Ack

basicReject

void basicReject(long deliveryTag,
                 boolean requeue)
                 throws java.io.IOException

Reject a message. Supply the deliveryTag from the AMQP.Basic.GetOk or AMQP.Basic.Deliver method containing the received message being rejected.

Parameters:

deliveryTag - the tag from the received AMQP.Basic.GetOk or AMQP.Basic.Deliver

requeue - true if the rejected message should be requeued rather than discarded/dead-lettered

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Basic.Reject

basicConsume

java.lang.String basicConsume(java.lang.String queue,
                              Consumer callback)
                              throws java.io.IOException

Start a non-nolocal, non-exclusive consumer, with explicit acknowledgements required and a server-generated consumerTag.

Parameters:

queue - the name of the queue

callback - an interface to the consumer object

Returns:

the consumerTag generated by the server

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Basic.Consume, AMQP.Basic.ConsumeOk, basicAck(long, boolean), basicConsume(String,boolean, String,boolean,boolean, Map, Consumer)

basicConsume

java.lang.String basicConsume(java.lang.String queue,
                              boolean noAck,
                              Consumer callback)
                              throws java.io.IOException

Start a non-nolocal, non-exclusive consumer, with a server-generated consumerTag.

Parameters:

queue - the name of the queue

noAck - true if no handshake is required

callback - an interface to the consumer object

Returns:

the consumerTag generated by the server

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Basic.Consume, AMQP.Basic.ConsumeOk, basicConsume(String,boolean, String,boolean,boolean, Map, Consumer)

basicConsume

java.lang.String basicConsume(java.lang.String queue,
                              boolean noAck,
                              java.lang.String consumerTag,
                              Consumer callback)
                              throws java.io.IOException

Start a non-nolocal, non-exclusive consumer.

Parameters:

queue - the name of the queue

noAck - true if no handshake is required

consumerTag - a client-generated consumer tag to establish context

callback - an interface to the consumer object

Returns:

the consumerTag associated with the new consumer

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Basic.Consume, AMQP.Basic.ConsumeOk, basicConsume(String,boolean, String,boolean,boolean, Map, Consumer)

basicConsume

java.lang.String basicConsume(java.lang.String queue,
                              boolean noAck,
                              java.lang.String consumerTag,
                              boolean noLocal,
                              boolean exclusive,
                              java.util.Map<java.lang.String,java.lang.Object> arguments,
                              Consumer callback)
                              throws java.io.IOException

Start a consumer. Calls the consumer's Consumer.handleConsumeOk(java.lang.String) method before returning.

Parameters:

queue - the name of the queue

noAck - true if no handshake is required

consumerTag - a client-generated consumer tag to establish context

noLocal - flag set to true unless server local buffering is required

exclusive - true if this is an exclusive consumer

callback - an interface to the consumer object

arguments - a set of arguments for the consume

Returns:

the consumerTag associated with the new consumer

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Basic.Consume, AMQP.Basic.ConsumeOk

basicCancel

void basicCancel(java.lang.String consumerTag)
                 throws java.io.IOException

Cancel a consumer. Calls the consumer's Consumer.handleCancelOk(java.lang.String) method before returning.

Parameters:

consumerTag - a client- or server-generated consumer tag to establish context

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Basic.Cancel, AMQP.Basic.CancelOk

basicRecover

AMQP.Basic.RecoverOk basicRecover(boolean requeue)
                                  throws java.io.IOException

Ask the broker to resend unacknowledged messages. In 0-8 basic.recover is asynchronous; in 0-9-1 it is synchronous, and the new, deprecated method basic.recover_async is asynchronous.

Parameters:

requeue - If true, messages will be requeued and possibly delivered to a different consumer. If false, messages will be redelivered to the same consumer.

Throws:

java.io.IOException

basicRecoverAsync

@Deprecated
void basicRecoverAsync(boolean requeue)
                       throws java.io.IOException

Deprecated.

Ask the broker to resend unacknowledged messages. In 0-8 basic.recover is asynchronous; in 0-9-1 it is synchronous, and the new, deprecated method basic.recover_async is asynchronous and deprecated.

Parameters:

requeue - If true, messages will be requeued and possibly delivered to a different consumer. If false, messages will be redelivered to the same consumer.

Throws:

java.io.IOException

txSelect

AMQP.Tx.SelectOk txSelect()
                          throws java.io.IOException

Enables TX mode on this channel.

Returns:

a transaction-selection method to indicate the transaction was successfully initiated

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Tx.Select, AMQP.Tx.SelectOk

txCommit

AMQP.Tx.CommitOk txCommit()
                          throws java.io.IOException

Commits a TX transaction on this channel.

Returns:

a transaction-commit method to indicate the transaction was successfully committed

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Tx.Commit, AMQP.Tx.CommitOk

txRollback

AMQP.Tx.RollbackOk txRollback()
                              throws java.io.IOException

Rolls back a TX transaction on this channel.

Returns:

a transaction-rollback method to indicate the transaction was successfully rolled back

Throws:

java.io.IOException - if an error is encountered

See Also:

AMQP.Tx.Rollback, AMQP.Tx.RollbackOk