Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package javax.resource.spi.work;
import java.lang.Object;
import java.lang.Runnable;
import java.lang.Exception;
import java.lang.Throwable;
/**
* This interface models a WorkManager which provides a facility
* to submit Work instances for execution. This frees the user
* from having to create Java threads directly to do work. Further, this
* allows efficient pooling of thread resources and more control over thread
* usage.
*
* The various stages in Work processing are:
*
*
work submit: A Work instance is being submitted for
* execution. The Work instance could either be accepted or
* rejected with a WorkRejectedException set to an appropriate
* error code.
*
*
work accepted: The submitted Work instance has been
* accepted. The accepted Work instance could either start
* execution or could be rejected again with a
* WorkRejectedException set to an appropriate error code.
* There is no guarantee on when the execution would start unless a start
* timeout duration is specified. When a start timeout is specified, the
* Work execution must be started within the specified
* duration (not a real-time guarantee), failing which a
* WorkRejectedException set to an error code
* (WorkRejected.TIMED_OUT) is thrown.
*
*
work rejected: The Work instance has been rejected.
* The Work instance could be rejected during Work
* submittal or after the Work instance has been accepted
* (but before Work instance starts execution). The rejection could be due
* to internal factors or start timeout expiration. A
* WorkRejectedException with an appropriate error code
* (indicates the reason) is thrown in both cases.
*
*
work started: The execution of the Work
* instance has started. This means that a thread
* has been allocated for its execution. But this
* does not guarantee that the allocated thread has been scheduled to run
* on a CPU resource. Once execution is started, the allocated thread
* sets up an appropriate execution context (transaction , security, etc)
* and calls Work.run(). Note, any exception thrown during execution context
* setup or Work.run() leads to completion of processing.
*
*
work completed: The execution of the Work has been
* completed. The execution could complete with or without an exception.
* The WorkManager catches any exception thrown during
* Work processing (which includes execution context setup),
* and wraps it with a WorkCompletedException.
*
*
* @version 1.0
* @author Ram Jeyaraman
*/
public interface WorkManager {
/**
* A constant to indicate timeout duration. A zero timeout value indicates
* an action be performed immediately. The WorkManager implementation
* must timeout the action as soon as possible.
*/
long IMMEDIATE = 0L;
/**
* A constant to indicate timeout duration. A maximum timeout value
* indicates that an action be performed arbitrarily without any time
* constraint.
*/
long INDEFINITE = Long.MAX_VALUE;
/**
* A constant to indicate an unknown start delay duration or other unknown
* values.
*/
long UNKNOWN = -1;
/**
* Accepts a Work instance for processing. This call
* blocks until the Work instance completes execution.
* There is no guarantee on when the accepted Work
* instance would start execution ie., there is no time constraint
* to start execution. (that is, startTimeout=INDEFINITE)
*
* @param work The unit of work to be done.
* Could be long or short-lived.
*
* @throws WorkRejectedException indicates that a
* Work instance has been rejected from further processing.
* This can occur due to internal factors.
*
* @throws WorkCompletedException indicates that a
* Work instance has completed execution with an exception.
*/
void doWork(Work work) // startTimeout = INDEFINITE
throws WorkException;
/**
* Accepts a Work instance for processing. This call
* blocks until the Work instance completes execution.
*
* @param work The unit of work to be done.
* Could be long or short-lived.
*
* @param startTimeout a time duration (in milliseconds)
* within which the execution of the Work instance must
* start. Otherwise, the Work instance is rejected with a
* WorkRejectedException set to an appropriate error code
* (WorkRejectedException.TIMED_OUT). Note, this
* does not offer real-time guarantees.
*
* @param execContext an object containing the execution
* context with which the submitted Work instance must
* be executed.
*
* @param workListener an object which would be notified
* when the various Work processing events (work accepted,
* work rejected, work started, work completed) occur.
*
* @throws WorkRejectedException indicates that a
* Work instance has been rejected from further processing.
* This can occur due to internal factors or start timeout expiration.
*
* @throws WorkCompletedException indicates that a
* Work instance has completed execution with an exception.
*/
void doWork(Work work, long startTimeout,
ExecutionContext execContext, WorkListener workListener)
throws WorkException;
/**
* Accepts a Work instance for processing. This call
* blocks until the Work instance starts execution
* but not until its completion. There is no guarantee on when
* the accepted Work instance would start
* execution ie., there is no time constraint to start execution.
* (that is, startTimeout=INDEFINITE)
*
* @param work The unit of work to be done.
* Could be long or short-lived.
*
* @return the time elapsed (in milliseconds) from Work
* acceptance until start of execution. Note, this does not offer
* real-time guarantees. It is valid to return -1, if the actual start
* delay duration is unknown.
*
* @throws WorkRejectedException indicates that a
* Work instance has been rejected from further processing.
* This can occur due to internal factors.
*/
long startWork(Work work) // startTimeout = INDEFINITE
throws WorkException;
/**
* Accepts a Work instance for processing. This call
* blocks until the Work instance starts execution
* but not until its completion. There is no guarantee on when
* the accepted Work instance would start
* execution ie., there is no time constraint to start execution.
*
* @param work The unit of work to be done.
* Could be long or short-lived.
*
* @param startTimeout a time duration (in milliseconds)
* within which the execution of the Work instance must
* start. Otherwise, the Work instance is rejected with a
* WorkRejectedException set to an appropriate error code
* (WorkRejectedException.TIMED_OUT). Note, this
* does not offer real-time guarantees.
*
* @param execContext an object containing the execution
* context with which the submitted Work instance must
* be executed.
*
* @param workListener an object which would be notified
* when the various Work processing events (work accepted,
* work rejected, work started, work completed) occur.
*
* @return the time elapsed (in milliseconds) from Work
* acceptance until start of execution. Note, this does not offer
* real-time guarantees. It is valid to return -1, if the actual start
* delay duration is unknown.
*
* @throws WorkRejectedException indicates that a
* Work instance has been rejected from further processing.
* This can occur due to internal factors or start timeout expiration.
*/
long startWork(Work work, long startTimeout,
ExecutionContext execContext, WorkListener workListener)
throws WorkException;
/**
* Accepts a Work instance for processing. This call
* does not block and returns immediately once a Work
* instance has been accepted for processing. There is no guarantee
* on when the submitted Work instance would start
* execution ie., there is no time constraint to start execution.
* (that is, startTimeout=INDEFINITE).
*
* @param work The unit of work to be done.
* Could be long or short-lived.
*
* @throws WorkRejectedException indicates that a
* Work instance has been rejected from further processing.
* This can occur due to internal factors.
*/
void scheduleWork(Work work) // startTimeout = INDEFINITE
throws WorkException;
/**
* Accepts a Work instance for processing. This call
* does not block and returns immediately once a Work
* instance has been accepted for processing.
*
* @param work The unit of work to be done.
* Could be long or short-lived.
*
* @param startTimeout a time duration (in milliseconds)
* within which the execution of the Work instance must
* start. Otherwise, the Work instance is rejected with a
* WorkRejectedException set to an appropriate error code
* (WorkRejectedException.TIMED_OUT). Note, this
* does not offer real-time guarantees.
*
* @param execContext an object containing the execution
* context with which the submitted Work instance must
* be executed.
*
* @param workListener an object which would be notified
* when the various Work processing events (work accepted,
* work rejected, work started, work completed) occur.
*
* @throws WorkRejectedException indicates that a
* Work instance has been rejected from further processing.
* This can occur due to internal factors.
*/
void scheduleWork(Work work, long startTimeout,
ExecutionContext execContext, WorkListener workListener)
throws WorkException;
}
