Package org.zkoss.zk.ui.impl

Class RequestQueueImpl

java.lang.Object

org.zkoss.zk.ui.impl.RequestQueueImpl

All Implemented Interfaces:

RequestQueue

public class RequestQueueImpl
extends Object
implements RequestQueue

An implementation of RequestQueue behaving as a queue of AuRequest. There is one queue for each desktop.

Implementation Note: Unlike only of desktop members, this class must be thread-safe.

Author:

tomyeh

Constructor Summary

Constructors

Constructor	Description
RequestQueueImpl()

Method Summary

Modifier and Type	Method	Description
void	addPerfRequestId(String requestId)	Adds a request ID that uniquely identifies a request for performance measurement PerformanceMeter.
void	addRequests(Collection<AuRequest> requests)	Adds a list of requests to the queue.
Collection<String>	clearPerfRequestIds()	Clears all request IDs that were added by RequestQueue.addPerfRequestId(java.lang.String) for performance measurement.
boolean	isEmpty()	Returns if no more request available in the queue.
AuRequest	nextRequest()	Returns the next request, or null if no more request.

Methods inherited from class java.lang.Object

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

Constructor Details

RequestQueueImpl

public RequestQueueImpl()

Method Details

addPerfRequestId

public void addPerfRequestId(String requestId)

Description copied from interface: RequestQueue

Adds a request ID that uniquely identifies a request for performance measurement PerformanceMeter.

Specified by:

addPerfRequestId in interface RequestQueue

Parameters:

requestId - the request ID (never null)

clearPerfRequestIds

public Collection<String> clearPerfRequestIds()

Description copied from interface: RequestQueue

Clears all request IDs that were added by RequestQueue.addPerfRequestId(java.lang.String) for performance measurement. It is usually called after all requests are processed (RequestQueue.isEmpty() is true).

Specified by:

clearPerfRequestIds in interface RequestQueue

Returns:

a list of request IDs that were added by RequestQueue.addPerfRequestId(java.lang.String), or null if no request ID was added.

isEmpty

public boolean isEmpty()

Description copied from interface: RequestQueue

Returns if no more request available in the queue.

Specified by:

isEmpty in interface RequestQueue

Returns:

whether no more request is available in the queue.

nextRequest

public AuRequest nextRequest()

Description copied from interface: RequestQueue

Returns the next request, or null if no more request. Once returned, the request is removed from the queue.

Specified by:

nextRequest in interface RequestQueue

addRequests

public void addRequests(Collection<AuRequest> requests)

Description copied from interface: RequestQueue

Adds a list of requests to the queue. Notice that when the request is added, it will be activated first, i.e., AuRequest.activate() will be called before adding to queue. If the component is not found or does not belong to the current execution, it will be ignored.

Specified by:

addRequests in interface RequestQueue