org.apache.camel.impl
Class DefaultConsumerTemplate

java.lang.Object
  org.apache.camel.impl.ServiceSupport
      org.apache.camel.impl.DefaultConsumerTemplate

All Implemented Interfaces:

ConsumerTemplate, Service, ShutdownableService

public class DefaultConsumerTemplate
extends ServiceSupport
implements ConsumerTemplate

Template (named like Spring's TransactionTemplate & JmsTemplate et al) for working with Camel and consuming Message instances in an Exchange from an Endpoint.

Version:

Constructor Summary

DefaultConsumerTemplate(CamelContext context)

Method Summary

void	doneUoW(Exchange exchange) If you have used any of the receive methods which returns a Exchange type then you need to invoke this method when you are done using the returned Exchange.
protected void	doStart()
protected void	doStop()
protected java.lang.Object	extractResultBody(Exchange result) Extracts the body from the given result.
CamelContext	getCamelContext()
int	getCurrentCacheSize() Gets an approximated size of the current cached resources in the backing cache pools.
int	getMaximumCacheSize() Gets the maximum cache size used.
Exchange	receive(Endpoint endpoint) Receives from the endpoint, waiting until there is a response.
Exchange	receive(Endpoint endpoint, long timeout) Receives from the endpoint, waiting until there is a response or the timeout occurs Important: See ConsumerTemplate.doneUoW(Exchange)
Exchange	receive(java.lang.String endpointUri) Receives from the endpoint, waiting until there is a response Important: See ConsumerTemplate.doneUoW(Exchange)
Exchange	receive(java.lang.String endpointUri, long timeout) Receives from the endpoint, waiting until there is a response or the timeout occurs Important: See ConsumerTemplate.doneUoW(Exchange)
java.lang.Object	receiveBody(Endpoint endpoint) Receives from the endpoint, waiting until there is a response
<T> T	receiveBody(Endpoint endpoint, java.lang.Class<T> type) Receives from the endpoint, waiting until there is a response
java.lang.Object	receiveBody(Endpoint endpoint, long timeout) Receives from the endpoint, waiting until there is a response or the timeout occurs
<T> T	receiveBody(Endpoint endpoint, long timeout, java.lang.Class<T> type) Receives from the endpoint, waiting until there is a response or the timeout occurs
java.lang.Object	receiveBody(java.lang.String endpointUri) Receives from the endpoint, waiting until there is a response
<T> T	receiveBody(java.lang.String endpointUri, java.lang.Class<T> type) Receives from the endpoint, waiting until there is a response
java.lang.Object	receiveBody(java.lang.String endpointUri, long timeout) Receives from the endpoint, waiting until there is a response or the timeout occurs
<T> T	receiveBody(java.lang.String endpointUri, long timeout, java.lang.Class<T> type) Receives from the endpoint, waiting until there is a response or the timeout occurs
java.lang.Object	receiveBodyNoWait(Endpoint endpoint) Receives from the endpoint, not waiting for a response if non exists.
<T> T	receiveBodyNoWait(Endpoint endpoint, java.lang.Class<T> type) Receives from the endpoint, not waiting for a response if non exists.
java.lang.Object	receiveBodyNoWait(java.lang.String endpointUri) Receives from the endpoint, not waiting for a response if non exists.
<T> T	receiveBodyNoWait(java.lang.String endpointUri, java.lang.Class<T> type) Receives from the endpoint, not waiting for a response if non exists.
Exchange	receiveNoWait(Endpoint endpoint) Receives from the endpoint, not waiting for a response if non exists.
Exchange	receiveNoWait(java.lang.String endpointUri) Receives from the endpoint, not waiting for a response if non exists.
protected Endpoint	resolveMandatoryEndpoint(java.lang.String endpointUri)
void	setMaximumCacheSize(int maximumCacheSize) Sets a custom maximum cache size.

Methods inherited from class org.apache.camel.impl.ServiceSupport

addChildService, doResume, doShutdown, doSuspend, getStatus, getVersion, isRunAllowed, isStarted, isStarting, isStopped, isStopping, isSuspended, isSuspending, removeChildService, resume, shutdown, start, start, stop, suspend

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.camel.Service

start, stop

Constructor Detail

DefaultConsumerTemplate

public DefaultConsumerTemplate(CamelContext context)

Method Detail

getMaximumCacheSize

public int getMaximumCacheSize()

Description copied from interface: ConsumerTemplate

Gets the maximum cache size used.

Specified by:

getMaximumCacheSize in interface ConsumerTemplate

Returns:

the maximum cache size

setMaximumCacheSize

public void setMaximumCacheSize(int maximumCacheSize)

Description copied from interface: ConsumerTemplate

Sets a custom maximum cache size.

Specified by:

setMaximumCacheSize in interface ConsumerTemplate

Parameters:

maximumCacheSize - the custom maximum cache size

getCurrentCacheSize

public int getCurrentCacheSize()

Description copied from interface: ConsumerTemplate

Gets an approximated size of the current cached resources in the backing cache pools.

Specified by:

getCurrentCacheSize in interface ConsumerTemplate

Returns:

the size of current cached resources

getCamelContext

public CamelContext getCamelContext()

receive

public Exchange receive(java.lang.String endpointUri)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, waiting until there is a response

Important: See ConsumerTemplate.doneUoW(Exchange)

Specified by:

receive in interface ConsumerTemplate

Parameters:

endpointUri - the endpoint to receive from

Returns:

the returned exchange

receive

public Exchange receive(Endpoint endpoint)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, waiting until there is a response.

Important: See ConsumerTemplate.doneUoW(Exchange)

Specified by:

receive in interface ConsumerTemplate

Parameters:

endpoint - the endpoint to receive from

Returns:

the returned exchange

See Also:

ConsumerTemplate.doneUoW(Exchange)

receive

public Exchange receive(java.lang.String endpointUri,
                        long timeout)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, waiting until there is a response or the timeout occurs

Important: See ConsumerTemplate.doneUoW(Exchange)

Specified by:

receive in interface ConsumerTemplate

Parameters:

endpointUri - the endpoint to receive from

timeout - timeout in millis to wait for a response

Returns:

the returned exchange, or null if no response

See Also:

ConsumerTemplate.doneUoW(Exchange)

receive

public Exchange receive(Endpoint endpoint,
                        long timeout)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, waiting until there is a response or the timeout occurs

Important: See ConsumerTemplate.doneUoW(Exchange)

Specified by:

receive in interface ConsumerTemplate

Parameters:

endpoint - the endpoint to receive from

timeout - timeout in millis to wait for a response

Returns:

the returned exchange, or null if no response

See Also:

ConsumerTemplate.doneUoW(Exchange)

receiveNoWait

public Exchange receiveNoWait(java.lang.String endpointUri)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, not waiting for a response if non exists.

Important: See ConsumerTemplate.doneUoW(Exchange)

Specified by:

receiveNoWait in interface ConsumerTemplate

Parameters:

endpointUri - the endpoint to receive from

Returns:

the returned exchange, or null if no response

receiveNoWait

public Exchange receiveNoWait(Endpoint endpoint)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, not waiting for a response if non exists.

Important: See ConsumerTemplate.doneUoW(Exchange)

Specified by:

receiveNoWait in interface ConsumerTemplate

Parameters:

endpoint - the endpoint to receive from

Returns:

the returned exchange, or null if no response

receiveBody

public java.lang.Object receiveBody(java.lang.String endpointUri)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, waiting until there is a response

Specified by:

receiveBody in interface ConsumerTemplate

Parameters:

endpointUri - the endpoint to receive from

Returns:

the returned response body

receiveBody

public java.lang.Object receiveBody(Endpoint endpoint)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, waiting until there is a response

Specified by:

receiveBody in interface ConsumerTemplate

Parameters:

endpoint - the endpoint to receive from

Returns:

the returned response body

receiveBody

public java.lang.Object receiveBody(java.lang.String endpointUri,
                                    long timeout)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, waiting until there is a response or the timeout occurs

Specified by:

receiveBody in interface ConsumerTemplate

Parameters:

endpointUri - the endpoint to receive from

timeout - timeout in millis to wait for a response

Returns:

the returned response body, or null if no response

receiveBody

public java.lang.Object receiveBody(Endpoint endpoint,
                                    long timeout)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, waiting until there is a response or the timeout occurs

Specified by:

receiveBody in interface ConsumerTemplate

Parameters:

endpoint - the endpoint to receive from

timeout - timeout in millis to wait for a response

Returns:

the returned response body, or null if no response

receiveBodyNoWait

public java.lang.Object receiveBodyNoWait(java.lang.String endpointUri)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, not waiting for a response if non exists.

Specified by:

receiveBodyNoWait in interface ConsumerTemplate

Parameters:

endpointUri - the endpoint to receive from

Returns:

the returned response body, or null if no response

receiveBodyNoWait

public java.lang.Object receiveBodyNoWait(Endpoint endpoint)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, not waiting for a response if non exists.

Specified by:

receiveBodyNoWait in interface ConsumerTemplate

Parameters:

endpoint - the endpoint to receive from

Returns:

the returned response body, or null if no response

receiveBody

public <T> T receiveBody(java.lang.String endpointUri,
                         java.lang.Class<T> type)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, waiting until there is a response

Specified by:

receiveBody in interface ConsumerTemplate

Parameters:

endpointUri - the endpoint to receive from

type - the expected response type

Returns:

the returned response body

receiveBody

public <T> T receiveBody(Endpoint endpoint,
                         java.lang.Class<T> type)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, waiting until there is a response

Specified by:

receiveBody in interface ConsumerTemplate

Parameters:

endpoint - the endpoint to receive from

type - the expected response type

Returns:

the returned response body

receiveBody

public <T> T receiveBody(java.lang.String endpointUri,
                         long timeout,
                         java.lang.Class<T> type)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, waiting until there is a response or the timeout occurs

Specified by:

receiveBody in interface ConsumerTemplate

Parameters:

endpointUri - the endpoint to receive from

timeout - timeout in millis to wait for a response

type - the expected response type

Returns:

the returned response body, or null if no response

receiveBody

public <T> T receiveBody(Endpoint endpoint,
                         long timeout,
                         java.lang.Class<T> type)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, waiting until there is a response or the timeout occurs

Specified by:

receiveBody in interface ConsumerTemplate

Parameters:

endpoint - the endpoint to receive from

timeout - timeout in millis to wait for a response

type - the expected response type

Returns:

the returned response body, or null if no response

receiveBodyNoWait

public <T> T receiveBodyNoWait(java.lang.String endpointUri,
                               java.lang.Class<T> type)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, not waiting for a response if non exists.

Specified by:

receiveBodyNoWait in interface ConsumerTemplate

Parameters:

endpointUri - the endpoint to receive from

type - the expected response type

Returns:

the returned response body, or null if no response

receiveBodyNoWait

public <T> T receiveBodyNoWait(Endpoint endpoint,
                               java.lang.Class<T> type)

Description copied from interface: ConsumerTemplate

Receives from the endpoint, not waiting for a response if non exists.

Specified by:

receiveBodyNoWait in interface ConsumerTemplate

Parameters:

endpoint - the endpoint to receive from

type - the expected response type

Returns:

the returned response body, or null if no response

doneUoW

public void doneUoW(Exchange exchange)

Description copied from interface: ConsumerTemplate

If you have used any of the receive methods which returns a Exchange type then you need to invoke this method when you are done using the returned Exchange.

This is needed to ensure any Synchronization works is being executed. For example if you consumed from a file endpoint, then the consumed file is only moved/delete when you done the Exchange.

Note for all the other receive methods which does not return a Exchange type, the done has been executed automatic by Camel itself.

Specified by:

doneUoW in interface ConsumerTemplate

Parameters:

exchange - the exchange

resolveMandatoryEndpoint

protected Endpoint resolveMandatoryEndpoint(java.lang.String endpointUri)

extractResultBody

protected java.lang.Object extractResultBody(Exchange result)

Extracts the body from the given result.

If the exchange pattern is provided it will try to honor it and retrieve the body from either IN or OUT according to the pattern.

Parameters:

result - the result

Returns:

the result, can be null.

doStart

protected void doStart()
                throws java.lang.Exception

Specified by:

doStart in class ServiceSupport

Throws:

java.lang.Exception

doStop

protected void doStop()
               throws java.lang.Exception

Specified by:

doStop in class ServiceSupport

Throws:

java.lang.Exception