Channel (RabbitMQ Java Client 4.1.0 API)

All Superinterfaces:

ShutdownNotifier

All Known Subinterfaces:

RecoverableChannel

All Known Implementing Classes:

AutorecoveringChannel, ChannelN, RecoveryAwareChannelN
```
public interface Channel
extends ShutdownNotifier
```
Interface to a channel. All non-deprecated methods of this interface are part of the public API.
Tutorials
RabbitMQ tutorials demonstrate how key methods of this interface are used.
User Guide
See Java Client User Guide.
Concurrency Considerations

Channel instances must not be shared between threads. Applications should prefer using a Channel per thread instead of sharing the same Channel across multiple threads. While some operations on channels are safe to invoke concurrently, some are not and will result in incorrect frame interleaving on the wire. Sharing channels between threads will also interfere with Publisher Confirms. As such, applications need to use a Channel per thread.

See Also:

RabbitMQ tutorials, RabbitMQ Java Client User Guide

Method Summary

All Methods Instance Methods Abstract Methods Deprecated Methods
Modifier and Type	Method and Description
`void`	`abort()` Abort this channel with the `AMQP.REPLY_SUCCESS` close code and message 'OK'.
`void`	`abort(int closeCode, String closeMessage)` Abort this channel.
`void`	`addConfirmListener(ConfirmListener listener)` Add a `ConfirmListener`.
`void`	`addFlowListener(FlowListener listener)` Deprecated.
`void`	`addReturnListener(ReturnListener listener)` Add a `ReturnListener`.
`void`	`asyncRpc(Method method)` Asynchronously send a method over this channel.
`void`	`basicAck(long deliveryTag, boolean multiple)` Acknowledge one or several received messages.
`void`	`basicCancel(String consumerTag)` Cancel a consumer.
`String`	`basicConsume(String queue, boolean autoAck, Consumer callback)` Start a non-nolocal, non-exclusive consumer, with a server-generated consumerTag.
`String`	`basicConsume(String queue, boolean autoAck, Map<String,Object> arguments, Consumer callback)` Start a non-nolocal, non-exclusive consumer, with a server-generated consumerTag and specified arguments.
`String`	`basicConsume(String queue, boolean autoAck, String consumerTag, boolean noLocal, boolean exclusive, Map<String,Object> arguments, Consumer callback)` Start a consumer.
`String`	`basicConsume(String queue, boolean autoAck, String consumerTag, Consumer callback)` Start a non-nolocal, non-exclusive consumer.
`String`	`basicConsume(String queue, Consumer callback)` Start a non-nolocal, non-exclusive consumer, with explicit acknowledgement and a server-generated consumerTag.
`GetResponse`	`basicGet(String queue, boolean autoAck)` Retrieve a message from a queue using `AMQP.Basic.Get`
`void`	`basicNack(long deliveryTag, boolean multiple, boolean requeue)` Reject one or several received messages.
`void`	`basicPublish(String exchange, String routingKey, AMQP.BasicProperties props, byte[] body)` Publish a message.
`void`	`basicPublish(String exchange, String routingKey, boolean mandatory, AMQP.BasicProperties props, byte[] body)` Publish a message.
`void`	`basicPublish(String exchange, 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 prefetchCount, boolean global)` 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()` Ask the broker to resend unacknowledged messages.
`AMQP.Basic.RecoverOk`	`basicRecover(boolean requeue)` Ask the broker to resend unacknowledged messages.
`void`	`basicReject(long deliveryTag, boolean requeue)` Reject a message.
`void`	`clearConfirmListeners()` Remove all `ConfirmListener`s.
`void`	`clearFlowListeners()` Deprecated.
`void`	`clearReturnListeners()` Remove all `ReturnListener`s.
`void`	`close()` Close this channel with the `AMQP.REPLY_SUCCESS` close code and message 'OK'.
`void`	`close(int closeCode, String closeMessage)` Close this channel.
`AMQP.Confirm.SelectOk`	`confirmSelect()` Enables publisher acknowledgements on this channel.
`long`	`consumerCount(String queue)` Returns the number of consumers on a queue.
`AMQP.Exchange.BindOk`	`exchangeBind(String destination, String source, String routingKey)` Bind an exchange to an exchange, with no extra arguments.
`AMQP.Exchange.BindOk`	`exchangeBind(String destination, String source, String routingKey, Map<String,Object> arguments)` Bind an exchange to an exchange.
`void`	`exchangeBindNoWait(String destination, String source, String routingKey, Map<String,Object> arguments)` Like `exchangeBind(String, String, String, java.util.Map)` but sets nowait parameter to true and returns void (as there will be no response from the server).
`AMQP.Exchange.DeclareOk`	`exchangeDeclare(String exchange, BuiltinExchangeType type)` Actively declare a non-autodelete, non-durable exchange with no extra arguments
`AMQP.Exchange.DeclareOk`	`exchangeDeclare(String exchange, BuiltinExchangeType type, boolean durable)` Actively declare a non-autodelete exchange with no extra arguments
`AMQP.Exchange.DeclareOk`	`exchangeDeclare(String exchange, BuiltinExchangeType type, boolean durable, boolean autoDelete, boolean internal, Map<String,Object> arguments)` Declare an exchange, via an interface that allows the complete set of arguments.
`AMQP.Exchange.DeclareOk`	`exchangeDeclare(String exchange, BuiltinExchangeType type, boolean durable, boolean autoDelete, Map<String,Object> arguments)` Declare an exchange.
`AMQP.Exchange.DeclareOk`	`exchangeDeclare(String exchange, String type)` Actively declare a non-autodelete, non-durable exchange with no extra arguments
`AMQP.Exchange.DeclareOk`	`exchangeDeclare(String exchange, String type, boolean durable)` Actively declare a non-autodelete exchange with no extra arguments
`AMQP.Exchange.DeclareOk`	`exchangeDeclare(String exchange, String type, boolean durable, boolean autoDelete, boolean internal, Map<String,Object> arguments)` Declare an exchange, via an interface that allows the complete set of arguments.
`AMQP.Exchange.DeclareOk`	`exchangeDeclare(String exchange, String type, boolean durable, boolean autoDelete, Map<String,Object> arguments)` Declare an exchange.
`void`	`exchangeDeclareNoWait(String exchange, BuiltinExchangeType type, boolean durable, boolean autoDelete, boolean internal, Map<String,Object> arguments)` Like `exchangeDeclare(String, String, boolean, boolean, java.util.Map)` but sets nowait parameter to true and returns nothing (as there will be no response from the server).
`void`	`exchangeDeclareNoWait(String exchange, String type, boolean durable, boolean autoDelete, boolean internal, Map<String,Object> arguments)` Like `exchangeDeclare(String, String, boolean, boolean, java.util.Map)` but sets nowait parameter to true and returns nothing (as there will be no response from the server).
`AMQP.Exchange.DeclareOk`	`exchangeDeclarePassive(String name)` Declare an exchange passively; that is, check if the named exchange exists.
`AMQP.Exchange.DeleteOk`	`exchangeDelete(String exchange)` Delete an exchange, without regard for whether it is in use or not
`AMQP.Exchange.DeleteOk`	`exchangeDelete(String exchange, boolean ifUnused)` Delete an exchange
`void`	`exchangeDeleteNoWait(String exchange, boolean ifUnused)` Like `exchangeDelete(String, boolean)` but sets nowait parameter to true and returns void (as there will be no response from the server).
`AMQP.Exchange.UnbindOk`	`exchangeUnbind(String destination, String source, String routingKey)` Unbind an exchange from an exchange, with no extra arguments.
`AMQP.Exchange.UnbindOk`	`exchangeUnbind(String destination, String source, String routingKey, Map<String,Object> arguments)` Unbind an exchange from an exchange.
`void`	`exchangeUnbindNoWait(String destination, String source, String routingKey, Map<String,Object> arguments)` Same as `exchangeUnbind(String, String, String, java.util.Map)` but sets no-wait parameter to true and returns nothing (as there will be no response from the server).
`boolean`	`flowBlocked()` Deprecated.
`int`	`getChannelNumber()` Retrieve this channel's channel number.
`Connection`	`getConnection()` Retrieve the connection which carries this channel.
`Consumer`	`getDefaultConsumer()` Get the current default consumer.
`long`	`getNextPublishSeqNo()` When in confirm mode, returns the sequence number of the next message to be published.
`long`	`messageCount(String queue)` Returns the number of messages in a queue ready to be delivered to consumers.
`AMQP.Queue.BindOk`	`queueBind(String queue, String exchange, String routingKey)` Bind a queue to an exchange, with no extra arguments.
`AMQP.Queue.BindOk`	`queueBind(String queue, String exchange, String routingKey, Map<String,Object> arguments)` Bind a queue to an exchange.
`void`	`queueBindNoWait(String queue, String exchange, String routingKey, Map<String,Object> arguments)` Same as `queueBind(String, String, String, java.util.Map)` but sets nowait parameter to true and returns void (as there will be no response from the server).
`AMQP.Queue.DeclareOk`	`queueDeclare()` Actively declare a server-named exclusive, autodelete, non-durable queue.
`AMQP.Queue.DeclareOk`	`queueDeclare(String queue, boolean durable, boolean exclusive, boolean autoDelete, Map<String,Object> arguments)` Declare a queue
`void`	`queueDeclareNoWait(String queue, boolean durable, boolean exclusive, boolean autoDelete, Map<String,Object> arguments)` Like `queueDeclare(String, boolean, boolean, boolean, java.util.Map)` but sets nowait flag to true and returns no result (as there will be no response from the server).
`AMQP.Queue.DeclareOk`	`queueDeclarePassive(String queue)` Declare a queue passively; i.e., check if it exists.
`AMQP.Queue.DeleteOk`	`queueDelete(String queue)` Delete a queue, without regard for whether it is in use or has messages on it
`AMQP.Queue.DeleteOk`	`queueDelete(String queue, boolean ifUnused, boolean ifEmpty)` Delete a queue
`void`	`queueDeleteNoWait(String queue, boolean ifUnused, boolean ifEmpty)` Like `queueDelete(String, boolean, boolean)` but sets nowait parameter to true and returns nothing (as there will be no response from the server).
`AMQP.Queue.PurgeOk`	`queuePurge(String queue)` Purges the contents of the given queue.
`AMQP.Queue.UnbindOk`	`queueUnbind(String queue, String exchange, String routingKey)` Unbinds a queue from an exchange, with no extra arguments.
`AMQP.Queue.UnbindOk`	`queueUnbind(String queue, String exchange, String routingKey, Map<String,Object> arguments)` Unbind a queue from an exchange.
`boolean`	`removeConfirmListener(ConfirmListener listener)` Remove a `ConfirmListener`.
`boolean`	`removeFlowListener(FlowListener listener)` Deprecated.
`boolean`	`removeReturnListener(ReturnListener listener)` Remove a `ReturnListener`.
`Command`	`rpc(Method method)` Synchronously send a method over this channel.
`void`	`setDefaultConsumer(Consumer consumer)` Set the current default consumer.
`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.
`boolean`	`waitForConfirms()` Wait until all messages published since the last call have been either ack'd or nack'd by the broker.
`boolean`	`waitForConfirms(long timeout)` Wait until all messages published since the last call have been either ack'd or nack'd by the broker; or until timeout elapses.
`void`	`waitForConfirmsOrDie()` Wait until all messages published since the last call have been either ack'd or nack'd by the broker.
`void`	`waitForConfirmsOrDie(long timeout)` Wait until all messages published since the last call have been either ack'd or nack'd by the broker; or until timeout elapses.

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 IOException,
           TimeoutException
```
    Close this channel with the AMQP.REPLY_SUCCESS close code and message 'OK'.
    
    Throws:
    
    IOException - if an error is encountered
    
    TimeoutException
  - close
```
void close(int closeCode,
           String closeMessage)
    throws IOException,
           TimeoutException
```
    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:
    
    IOException - if an error is encountered
    
    TimeoutException
  - flowBlocked
```
boolean flowBlocked()
```
    Deprecated.
    
    Deprecated, superseded by TCP back pressure. Will be removed in next major release.
    
    See Also:
    
    Resource-driven alarms
  - abort
```
void abort()
    throws 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:
    
    IOException
  - abort
```
void abort(int closeCode,
           String closeMessage)
    throws 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:
    
    IOException
  - addReturnListener
```
void addReturnListener(ReturnListener listener)
```
    Add a ReturnListener.
    
    Parameters:
    
    listener - the listener to add
  - removeReturnListener
```
boolean removeReturnListener(ReturnListener listener)
```
    Remove a ReturnListener.
    
    Parameters:
    
    listener - the listener to remove
    
    Returns:
    
    true if the listener was found and removed, false otherwise
  - clearReturnListeners
```
void clearReturnListeners()
```
    Remove all ReturnListeners.
  - addFlowListener
```
void addFlowListener(FlowListener listener)
```
    Deprecated.
    
    Add a FlowListener. Deprecated, superseded by TCP back pressure. Will be removed in next major release.
    
    Parameters:
    
    listener - the listener to add
    
    See Also:
    
    Resource-driven alarms
  - removeFlowListener
```
boolean removeFlowListener(FlowListener listener)
```
    Deprecated.
    
    Remove a FlowListener. Deprecated, superseded by TCP back pressure. Will be removed in next major release.
    
    Parameters:
    
    listener - the listener to remove
    
    Returns:
    
    true if the listener was found and removed, false otherwise
    
    See Also:
    
    Resource-driven alarms
  - clearFlowListeners
```
void clearFlowListeners()
```
    Deprecated.
    
    Remove all FlowListeners. Deprecated, superseded by TCP back pressure. Will be removed in next major release.
    
    See Also:
    
    Resource-driven alarms
  - addConfirmListener
```
void addConfirmListener(ConfirmListener listener)
```
    Add a ConfirmListener.
    
    Parameters:
    
    listener - the listener to add
  - removeConfirmListener
```
boolean removeConfirmListener(ConfirmListener listener)
```
    Remove a ConfirmListener.
    
    Parameters:
    
    listener - the listener to remove
    
    Returns:
    
    true if the listener was found and removed, false otherwise
  - clearConfirmListeners
```
void clearConfirmListeners()
```
    Remove all ConfirmListeners.
  - 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 IOException
```
    Request specific "quality of service" settings. These settings impose limits on the amount of data the server will deliver to consumers before requiring 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 channel rather than each consumer
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Basic.Qos
  - basicQos
```
void basicQos(int prefetchCount,
              boolean global)
       throws 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
    
    global - true if the settings should be applied to the entire channel rather than each consumer
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    basicQos(int, int, boolean)
  - basicQos
```
void basicQos(int prefetchCount)
       throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    basicQos(int, int, boolean)
  - basicPublish
```
void basicPublish(String exchange,
                  String routingKey,
                  AMQP.BasicProperties props,
                  byte[] body)
           throws IOException
```
    Publish a message. Publishing to a non-existent exchange will result in a channel-level protocol exception, which closes the channel. Invocations of Channel#basicPublish will eventually block if a resource-driven alarm is in effect.
    
    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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Basic.Publish, Resource-driven alarms
  - basicPublish
```
void basicPublish(String exchange,
                  String routingKey,
                  boolean mandatory,
                  AMQP.BasicProperties props,
                  byte[] body)
           throws IOException
```
    Publish a message. Invocations of Channel#basicPublish will eventually block if a resource-driven alarm is in effect.
    
    Parameters:
    
    exchange - the exchange to publish the message to
    
    routingKey - the routing key
    
    mandatory - true if the 'mandatory' flag is to be set
    
    props - other properties for the message - routing headers etc
    
    body - the message body
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Basic.Publish, Resource-driven alarms
  - basicPublish
```
void basicPublish(String exchange,
                  String routingKey,
                  boolean mandatory,
                  boolean immediate,
                  AMQP.BasicProperties props,
                  byte[] body)
           throws IOException
```
    Publish a message. Publishing to a non-existent exchange will result in a channel-level protocol exception, which closes the channel. Invocations of Channel#basicPublish will eventually block if a resource-driven alarm is in effect.
    
    Parameters:
    
    exchange - the exchange to publish the message to
    
    routingKey - the routing key
    
    mandatory - true if the 'mandatory' flag is to be set
    
    immediate - true if the 'immediate' flag is to be set. Note that the RabbitMQ server does not support this flag.
    
    props - other properties for the message - routing headers etc
    
    body - the message body
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Basic.Publish, Resource-driven alarms
  - exchangeDeclare
```
AMQP.Exchange.DeclareOk exchangeDeclare(String exchange,
                                        String type)
                                 throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Exchange.Declare, AMQP.Exchange.DeclareOk
  - exchangeDeclare
```
AMQP.Exchange.DeclareOk exchangeDeclare(String exchange,
                                        BuiltinExchangeType type)
                                 throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Exchange.Declare, AMQP.Exchange.DeclareOk
  - exchangeDeclare
```
AMQP.Exchange.DeclareOk exchangeDeclare(String exchange,
                                        String type,
                                        boolean durable)
                                 throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Exchange.Declare, AMQP.Exchange.DeclareOk
  - exchangeDeclare
```
AMQP.Exchange.DeclareOk exchangeDeclare(String exchange,
                                        BuiltinExchangeType type,
                                        boolean durable)
                                 throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Exchange.Declare, AMQP.Exchange.DeclareOk
  - exchangeDeclare
```
AMQP.Exchange.DeclareOk exchangeDeclare(String exchange,
                                        String type,
                                        boolean durable,
                                        boolean autoDelete,
                                        Map<String,Object> arguments)
                                 throws IOException
```
    Declare an exchange.
    
    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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Exchange.Declare, AMQP.Exchange.DeclareOk
  - exchangeDeclare
```
AMQP.Exchange.DeclareOk exchangeDeclare(String exchange,
                                        BuiltinExchangeType type,
                                        boolean durable,
                                        boolean autoDelete,
                                        Map<String,Object> arguments)
                                 throws IOException
```
    Declare an exchange.
    
    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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Exchange.Declare, AMQP.Exchange.DeclareOk
  - exchangeDeclare
```
AMQP.Exchange.DeclareOk exchangeDeclare(String exchange,
                                        String type,
                                        boolean durable,
                                        boolean autoDelete,
                                        boolean internal,
                                        Map<String,Object> arguments)
                                 throws 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
    
    internal - true if the exchange is internal, i.e. can't be directly published to by a client.
    
    arguments - other properties (construction arguments) for the exchange
    
    Returns:
    
    a declaration-confirm method to indicate the exchange was successfully declared
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Exchange.Declare, AMQP.Exchange.DeclareOk
  - exchangeDeclare
```
AMQP.Exchange.DeclareOk exchangeDeclare(String exchange,
                                        BuiltinExchangeType type,
                                        boolean durable,
                                        boolean autoDelete,
                                        boolean internal,
                                        Map<String,Object> arguments)
                                 throws 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
    
    internal - true if the exchange is internal, i.e. can't be directly published to by a client.
    
    arguments - other properties (construction arguments) for the exchange
    
    Returns:
    
    a declaration-confirm method to indicate the exchange was successfully declared
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Exchange.Declare, AMQP.Exchange.DeclareOk
  - exchangeDeclareNoWait
```
void exchangeDeclareNoWait(String exchange,
                           String type,
                           boolean durable,
                           boolean autoDelete,
                           boolean internal,
                           Map<String,Object> arguments)
                    throws IOException
```
    Like exchangeDeclare(String, String, boolean, boolean, java.util.Map) but sets nowait parameter to true and returns nothing (as there will be no response from the server).
    
    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
    
    internal - true if the exchange is internal, i.e. can't be directly published to by a client.
    
    arguments - other properties (construction arguments) for the exchange
    
    Throws:
    
    IOException - if an error is encountered
  - exchangeDeclareNoWait
```
void exchangeDeclareNoWait(String exchange,
                           BuiltinExchangeType type,
                           boolean durable,
                           boolean autoDelete,
                           boolean internal,
                           Map<String,Object> arguments)
                    throws IOException
```
    Like exchangeDeclare(String, String, boolean, boolean, java.util.Map) but sets nowait parameter to true and returns nothing (as there will be no response from the server).
    
    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
    
    internal - true if the exchange is internal, i.e. can't be directly published to by a client.
    
    arguments - other properties (construction arguments) for the exchange
    
    Throws:
    
    IOException - if an error is encountered
  - exchangeDeclarePassive
```
AMQP.Exchange.DeclareOk exchangeDeclarePassive(String name)
                                        throws IOException
```
    Declare an exchange passively; that is, check if the named exchange exists.
    
    Parameters:
    
    name - check the existence of an exchange named this
    
    Throws:
    
    IOException - the server will raise a 404 channel exception if the named exchange does not exist.
  - exchangeDelete
```
AMQP.Exchange.DeleteOk exchangeDelete(String exchange,
                                      boolean ifUnused)
                               throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Exchange.Delete, AMQP.Exchange.DeleteOk
  - exchangeDeleteNoWait
```
void exchangeDeleteNoWait(String exchange,
                          boolean ifUnused)
                   throws IOException
```
    Like exchangeDelete(String, boolean) but sets nowait parameter to true and returns void (as there will be no response from the server).
    
    Parameters:
    
    exchange - the name of the exchange
    
    ifUnused - true to indicate that the exchange is only to be deleted if it is unused
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Exchange.Delete, AMQP.Exchange.DeleteOk
  - exchangeDelete
```
AMQP.Exchange.DeleteOk exchangeDelete(String exchange)
                               throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Exchange.Delete, AMQP.Exchange.DeleteOk
  - exchangeBind
```
AMQP.Exchange.BindOk exchangeBind(String destination,
                                  String source,
                                  String routingKey)
                           throws IOException
```
    Bind an exchange to an exchange, with no extra arguments.
    
    Parameters:
    
    destination - the name of the exchange to which messages flow across the binding
    
    source - the name of the exchange from which messages flow across the binding
    
    routingKey - the routine key to use for the binding
    
    Returns:
    
    a binding-confirm method if the binding was successfully created
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Exchange.Bind, AMQP.Exchange.BindOk
  - exchangeBind
```
AMQP.Exchange.BindOk exchangeBind(String destination,
                                  String source,
                                  String routingKey,
                                  Map<String,Object> arguments)
                           throws IOException
```
    Bind an exchange to an exchange.
    
    Parameters:
    
    destination - the name of the exchange to which messages flow across the binding
    
    source - the name of the exchange from which messages flow across the binding
    
    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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Exchange.Bind, AMQP.Exchange.BindOk
  - exchangeBindNoWait
```
void exchangeBindNoWait(String destination,
                        String source,
                        String routingKey,
                        Map<String,Object> arguments)
                 throws IOException
```
    Like exchangeBind(String, String, String, java.util.Map) but sets nowait parameter to true and returns void (as there will be no response from the server).
    
    Parameters:
    
    destination - the name of the exchange to which messages flow across the binding
    
    source - the name of the exchange from which messages flow across the binding
    
    routingKey - the routine key to use for the binding
    
    arguments - other properties (binding parameters)
    
    Throws:
    
    IOException - if an error is encountered
  - exchangeUnbind
```
AMQP.Exchange.UnbindOk exchangeUnbind(String destination,
                                      String source,
                                      String routingKey)
                               throws IOException
```
    Unbind an exchange from an exchange, with no extra arguments.
    
    Parameters:
    
    destination - the name of the exchange to which messages flow across the binding
    
    source - the name of the exchange from which messages flow across the binding
    
    routingKey - the routine key to use for the binding
    
    Returns:
    
    a binding-confirm method if the binding was successfully created
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Exchange.Bind, AMQP.Exchange.BindOk
  - exchangeUnbind
```
AMQP.Exchange.UnbindOk exchangeUnbind(String destination,
                                      String source,
                                      String routingKey,
                                      Map<String,Object> arguments)
                               throws IOException
```
    Unbind an exchange from an exchange.
    
    Parameters:
    
    destination - the name of the exchange to which messages flow across the binding
    
    source - the name of the exchange from which messages flow across the binding
    
    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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Exchange.Bind, AMQP.Exchange.BindOk
  - exchangeUnbindNoWait
```
void exchangeUnbindNoWait(String destination,
                          String source,
                          String routingKey,
                          Map<String,Object> arguments)
                   throws IOException
```
    Same as exchangeUnbind(String, String, String, java.util.Map) but sets no-wait parameter to true and returns nothing (as there will be no response from the server).
    
    Parameters:
    
    destination - the name of the exchange to which messages flow across the binding
    
    source - the name of the exchange from which messages flow across the binding
    
    routingKey - the routine key to use for the binding
    
    arguments - other properties (binding parameters)
    
    Throws:
    
    IOException - if an error is encountered
  - queueDeclare
```
AMQP.Queue.DeclareOk queueDeclare()
                           throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Queue.Declare, AMQP.Queue.DeclareOk
  - queueDeclare
```
AMQP.Queue.DeclareOk queueDeclare(String queue,
                                  boolean durable,
                                  boolean exclusive,
                                  boolean autoDelete,
                                  Map<String,Object> arguments)
                           throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Queue.Declare, AMQP.Queue.DeclareOk
  - queueDeclareNoWait
```
void queueDeclareNoWait(String queue,
                        boolean durable,
                        boolean exclusive,
                        boolean autoDelete,
                        Map<String,Object> arguments)
                 throws IOException
```
    Like queueDeclare(String, boolean, boolean, boolean, java.util.Map) but sets nowait flag to true and returns no result (as there will be no response from the server).
    
    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
    
    Throws:
    
    IOException - if an error is encountered
  - queueDeclarePassive
```
AMQP.Queue.DeclareOk queueDeclarePassive(String queue)
                                  throws 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:
    
    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(String queue)
                         throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Queue.Delete, AMQP.Queue.DeleteOk
  - queueDelete
```
AMQP.Queue.DeleteOk queueDelete(String queue,
                                boolean ifUnused,
                                boolean ifEmpty)
                         throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Queue.Delete, AMQP.Queue.DeleteOk
  - queueDeleteNoWait
```
void queueDeleteNoWait(String queue,
                       boolean ifUnused,
                       boolean ifEmpty)
                throws IOException
```
    Like queueDelete(String, boolean, boolean) but sets nowait parameter to true and returns nothing (as there will be no response from the server).
    
    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
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Queue.Delete, AMQP.Queue.DeleteOk
  - queueBind
```
AMQP.Queue.BindOk queueBind(String queue,
                            String exchange,
                            String routingKey)
                     throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Queue.Bind, AMQP.Queue.BindOk
  - queueBind
```
AMQP.Queue.BindOk queueBind(String queue,
                            String exchange,
                            String routingKey,
                            Map<String,Object> arguments)
                     throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Queue.Bind, AMQP.Queue.BindOk
  - queueBindNoWait
```
void queueBindNoWait(String queue,
                     String exchange,
                     String routingKey,
                     Map<String,Object> arguments)
              throws IOException
```
    Same as queueBind(String, String, String, java.util.Map) but sets nowait parameter to true and returns void (as there will be no response from the server).
    
    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)
    
    Throws:
    
    IOException - if an error is encountered
  - queueUnbind
```
AMQP.Queue.UnbindOk queueUnbind(String queue,
                                String exchange,
                                String routingKey)
                         throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Queue.Unbind, AMQP.Queue.UnbindOk
  - queueUnbind
```
AMQP.Queue.UnbindOk queueUnbind(String queue,
                                String exchange,
                                String routingKey,
                                Map<String,Object> arguments)
                         throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Queue.Unbind, AMQP.Queue.UnbindOk
  - queuePurge
```
AMQP.Queue.PurgeOk queuePurge(String queue)
                       throws 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 successfully
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Queue.Purge, AMQP.Queue.PurgeOk
  - basicGet
```
GetResponse basicGet(String queue,
                     boolean autoAck)
              throws IOException
```
    Retrieve a message from a queue using AMQP.Basic.Get
    
    Parameters:
    
    queue - the name of the queue
    
    autoAck - true if the server should consider messages acknowledged once delivered; false if the server should expect explicit acknowledgements
    
    Returns:
    
    a GetResponse containing the retrieved message data
    
    Throws:
    
    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 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 to acknowledge all messages up to and including the supplied delivery tag; false to acknowledge just the supplied delivery tag.
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Basic.Ack
  - basicNack
```
void basicNack(long deliveryTag,
               boolean multiple,
               boolean requeue)
        throws IOException
```
    Reject one or several received messages. Supply the deliveryTag from the AMQP.Basic.GetOk or AMQP.Basic.GetOk method containing the message to be rejected.
    
    Parameters:
    
    deliveryTag - the tag from the received AMQP.Basic.GetOk or AMQP.Basic.Deliver
    
    multiple - true to reject all messages up to and including the supplied delivery tag; false to reject just the supplied delivery tag.
    
    requeue - true if the rejected message(s) should be requeued rather than discarded/dead-lettered
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Basic.Nack
  - basicReject
```
void basicReject(long deliveryTag,
                 boolean requeue)
          throws 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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Basic.Reject
  - basicConsume
```
String basicConsume(String queue,
                    Consumer callback)
             throws IOException
```
    Start a non-nolocal, non-exclusive consumer, with explicit acknowledgement 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:
    
    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
```
String basicConsume(String queue,
                    boolean autoAck,
                    Consumer callback)
             throws IOException
```
    Start a non-nolocal, non-exclusive consumer, with a server-generated consumerTag.
    
    Parameters:
    
    queue - the name of the queue
    
    autoAck - true if the server should consider messages acknowledged once delivered; false if the server should expect explicit acknowledgements
    
    callback - an interface to the consumer object
    
    Returns:
    
    the consumerTag generated by the server
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Basic.Consume, AMQP.Basic.ConsumeOk, basicConsume(String, boolean, String, boolean, boolean, Map, Consumer)
  - basicConsume
```
String basicConsume(String queue,
                    boolean autoAck,
                    Map<String,Object> arguments,
                    Consumer callback)
             throws IOException
```
    Start a non-nolocal, non-exclusive consumer, with a server-generated consumerTag and specified arguments.
    
    Parameters:
    
    queue - the name of the queue
    
    autoAck - true if the server should consider messages acknowledged once delivered; false if the server should expect explicit acknowledgements
    
    arguments - a set of arguments for the consume
    
    callback - an interface to the consumer object
    
    Returns:
    
    the consumerTag generated by the server
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Basic.Consume, AMQP.Basic.ConsumeOk, basicConsume(String, boolean, String, boolean, boolean, Map, Consumer)
  - basicConsume
```
String basicConsume(String queue,
                    boolean autoAck,
                    String consumerTag,
                    Consumer callback)
             throws IOException
```
    Start a non-nolocal, non-exclusive consumer.
    
    Parameters:
    
    queue - the name of the queue
    
    autoAck - true if the server should consider messages acknowledged once delivered; false if the server should expect explicit acknowledgements
    
    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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Basic.Consume, AMQP.Basic.ConsumeOk, basicConsume(String, boolean, String, boolean, boolean, Map, Consumer)
  - basicConsume
```
String basicConsume(String queue,
                    boolean autoAck,
                    String consumerTag,
                    boolean noLocal,
                    boolean exclusive,
                    Map<String,Object> arguments,
                    Consumer callback)
             throws IOException
```
    Start a consumer. Calls the consumer's Consumer.handleConsumeOk(java.lang.String) method.
    
    Parameters:
    
    queue - the name of the queue
    
    autoAck - true if the server should consider messages acknowledged once delivered; false if the server should expect explicit acknowledgements
    
    consumerTag - a client-generated consumer tag to establish context
    
    noLocal - true if the server should not deliver to this consumer messages published on this channel's connection
    
    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:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Basic.Consume, AMQP.Basic.ConsumeOk
  - basicCancel
```
void basicCancel(String consumerTag)
          throws IOException
```
    Cancel a consumer. Calls the consumer's Consumer.handleCancelOk(java.lang.String) method.
    
    Parameters:
    
    consumerTag - a client- or server-generated consumer tag to establish context
    
    Throws:
    
    IOException - if an error is encountered, or if the consumerTag is unknown
    
    See Also:
    
    AMQP.Basic.Cancel, AMQP.Basic.CancelOk
  - basicRecover
```
AMQP.Basic.RecoverOk basicRecover()
                           throws 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.
    Equivalent to calling basicRecover(true), messages will be requeued and possibly delivered to a different consumer.
    
    Throws:
    
    IOException
    
    See Also:
    
    basicRecover(boolean)
  - basicRecover
```
AMQP.Basic.RecoverOk basicRecover(boolean requeue)
                           throws 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:
    
    IOException
  - txSelect
```
AMQP.Tx.SelectOk txSelect()
                   throws IOException
```
    Enables TX mode on this channel.
    
    Returns:
    
    a transaction-selection method to indicate the transaction was successfully initiated
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Tx.Select, AMQP.Tx.SelectOk
  - txCommit
```
AMQP.Tx.CommitOk txCommit()
                   throws IOException
```
    Commits a TX transaction on this channel.
    
    Returns:
    
    a transaction-commit method to indicate the transaction was successfully committed
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Tx.Commit, AMQP.Tx.CommitOk
  - txRollback
```
AMQP.Tx.RollbackOk txRollback()
                       throws IOException
```
    Rolls back a TX transaction on this channel.
    
    Returns:
    
    a transaction-rollback method to indicate the transaction was successfully rolled back
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Tx.Rollback, AMQP.Tx.RollbackOk
  - confirmSelect
```
AMQP.Confirm.SelectOk confirmSelect()
                             throws IOException
```
    Enables publisher acknowledgements on this channel.
    
    Throws:
    
    IOException - if an error is encountered
    
    See Also:
    
    AMQP.Confirm.Select
  - getNextPublishSeqNo
```
long getNextPublishSeqNo()
```
    When in confirm mode, returns the sequence number of the next message to be published.
    
    Returns:
    
    the sequence number of the next message to be published
  - waitForConfirms
```
boolean waitForConfirms()
                 throws InterruptedException
```
    Wait until all messages published since the last call have been either ack'd or nack'd by the broker. Note, when called on a non-Confirm channel, waitForConfirms throws an IllegalStateException.
    
    Returns:
    
    whether all the messages were ack'd (and none were nack'd)
    
    Throws:
    
    IllegalStateException
    
    InterruptedException
  - waitForConfirms
```
boolean waitForConfirms(long timeout)
                 throws InterruptedException,
                        TimeoutException
```
    Wait until all messages published since the last call have been either ack'd or nack'd by the broker; or until timeout elapses. If the timeout expires a TimeoutException is thrown. When called on a non-Confirm channel, waitForConfirms throws an IllegalStateException.
    
    Returns:
    
    whether all the messages were ack'd (and none were nack'd)
    
    Throws:
    
    IllegalStateException
    
    InterruptedException
    
    TimeoutException
  - waitForConfirmsOrDie
```
void waitForConfirmsOrDie()
                   throws IOException,
                          InterruptedException
```
    Wait until all messages published since the last call have been either ack'd or nack'd by the broker. If any of the messages were nack'd, waitForConfirmsOrDie will throw an IOException. When called on a non-Confirm channel, it will throw an IllegalStateException.
    
    Throws:
    
    IllegalStateException
    
    IOException
    
    InterruptedException
  - waitForConfirmsOrDie
```
void waitForConfirmsOrDie(long timeout)
                   throws IOException,
                          InterruptedException,
                          TimeoutException
```
    Wait until all messages published since the last call have been either ack'd or nack'd by the broker; or until timeout elapses. If the timeout expires a TimeoutException is thrown. If any of the messages were nack'd, waitForConfirmsOrDie will throw an IOException. When called on a non-Confirm channel, it will throw an IllegalStateException.
    
    Throws:
    
    IllegalStateException
    
    IOException
    
    InterruptedException
    
    TimeoutException
  - asyncRpc
```
void asyncRpc(Method method)
       throws IOException
```
    Asynchronously send a method over this channel.
    
    Parameters:
    
    method - method to transmit over this channel.
    
    Throws:
    
    IOException - Problem transmitting method.
  - rpc
```
Command rpc(Method method)
     throws IOException
```
    Synchronously send a method over this channel.
    
    Parameters:
    
    method - method to transmit over this channel.
    
    Returns:
    
    command response to method. Caller should cast as appropriate.
    
    Throws:
    
    IOException - Problem transmitting method.
  - messageCount
```
long messageCount(String queue)
           throws IOException
```
    Returns the number of messages in a queue ready to be delivered to consumers. This method assumes the queue exists. If it doesn't, an exception will be closed with an exception.
    
    Parameters:
    
    queue - the name of the queue
    
    Returns:
    
    the number of messages in ready state
    
    Throws:
    
    IOException - Problem transmitting method.
  - consumerCount
```
long consumerCount(String queue)
            throws IOException
```
    Returns the number of consumers on a queue. This method assumes the queue exists. If it doesn't, an exception will be closed with an exception.
    
    Parameters:
    
    queue - the name of the queue
    
    Returns:
    
    the number of consumers
    
    Throws:
    
    IOException - Problem transmitting method.

Interface Channel

Tutorials

User Guide

Concurrency Considerations

Method Summary

Methods inherited from interface com.rabbitmq.client.ShutdownNotifier

Method Detail

getChannelNumber

getConnection

close

close

flowBlocked

abort

abort

addReturnListener

removeReturnListener

clearReturnListeners

addFlowListener

removeFlowListener

clearFlowListeners

addConfirmListener

removeConfirmListener

clearConfirmListeners

getDefaultConsumer

setDefaultConsumer

basicQos

basicQos

basicQos

basicPublish

basicPublish

basicPublish

exchangeDeclare

exchangeDeclare

exchangeDeclare

exchangeDeclare

exchangeDeclare

exchangeDeclare

exchangeDeclare

exchangeDeclare

exchangeDeclareNoWait

exchangeDeclareNoWait

exchangeDeclarePassive

exchangeDelete

exchangeDeleteNoWait

exchangeDelete

exchangeBind

exchangeBind

exchangeBindNoWait

exchangeUnbind

exchangeUnbind

exchangeUnbindNoWait

queueDeclare

queueDeclare

queueDeclareNoWait

queueDeclarePassive

queueDelete

queueDelete

queueDeleteNoWait

queueBind

queueBind

queueBindNoWait

queueUnbind

queueUnbind

queuePurge

basicGet

basicAck

basicNack

basicReject

basicConsume

basicConsume

basicConsume

basicConsume

basicConsume

basicCancel

basicRecover

basicRecover

txSelect

txCommit

txRollback

confirmSelect