oracle.ide.db.execute

Class DBRequestProcessor

java.lang.Object

oracle.ide.db.execute.DBRequestProcessor

public final class DBRequestProcessor
extends java.lang.Object

Executor style service for scheduling and executing tasks that use a DBObjectProvider. DBRequestProcessor instances are created by the DBRequestProcessorFactory.

Since:

12.1.3

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	DBRequestProcessor.DBRunnable Specific Runnable implementation for a process that works against a given DBObjectProvider.

Method Summary

Modifier and Type	Method and Description
void	cancel(java.lang.String key) Cancels a task that was previously scheduled with the given key.
java.util.concurrent.Future<?>	execute(DBRequestProcessor.DBRunnable run) Post the given runnable to the process queue for immediate execution.
void	schedule(java.lang.String key, DBRequestProcessor.DBRunnable run, int delay) Schedules a given runnable to run after a delay.

Methods inherited from class java.lang.Object

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

Method Detail

execute

public java.util.concurrent.Future<?> execute(DBRequestProcessor.DBRunnable run)

Post the given runnable to the process queue for immediate execution. The execution will happen off of the event thread, and only one process will execute at a time for a given Database.

Parameters:

run - the runnable to execute

Returns:

a Future that can be used to track the progress of the runnable, or null if this processor has been shutdown.

schedule

public void schedule(java.lang.String key,
                     DBRequestProcessor.DBRunnable run,
                     int delay)

Schedules a given runnable to run after a delay. If another runnable is scheduled with the same key before the delay has expired, the delay will simply be reset (i.e. the execution for a given key is always delayed until the last scheduled delay has expired).

Parameters:

key - the key to schedule by

run - the runnable to schedule after the delay

delay - the delay to wait for before executing the runnable

cancel

public void cancel(java.lang.String key)

Cancels a task that was previously scheduled with the given key. If the task has been scheduled its Thread will be interrupted.

Parameters:

key - the key for the task to cancel

See Also:

schedule(String,DBRunnable,int)