Package org.pentaho.platform.plugin.services.metadata

Class SessionCachingMetadataDomainRepository.PentahoAsyncThreadRunner

java.lang.Object

org.pentaho.platform.plugin.services.metadata.SessionCachingMetadataDomainRepository.PentahoAsyncThreadRunner

Enclosing class:

SessionCachingMetadataDomainRepository

public static class SessionCachingMetadataDomainRepository.PentahoAsyncThreadRunner
extends Object

Asynchronously executes a collection of tasks (ie Callable ). Contains logic that correctly sets the IPentahoSession for each spawned thread. Wrapper around ExecutorService.

Constructor Summary

Constructors

Constructor	Description
PentahoAsyncThreadRunner(int numberOfThreads, org.pentaho.platform.api.engine.IPentahoSession pentahoSession)	Constructor to set necessary information for underlying ExecutorService instance.
PentahoAsyncThreadRunner(int numberOfThreads, org.pentaho.platform.api.engine.IPentahoSession pentahoSession, String threadMasterName, String threadExecutorNamingPattern)	Constructor to set necessary information for underlying ExecutorService instance.

Method Summary

Modifier and Type	Method	Description
<T> Thread	asyncRun(Collection<? extends Callable<T>> tasks)	Asynchronously execute all tasks.

Methods inherited from class java.lang.Object

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

Constructor Detail

PentahoAsyncThreadRunner

public PentahoAsyncThreadRunner(int numberOfThreads,
                                org.pentaho.platform.api.engine.IPentahoSession pentahoSession,
                                String threadMasterName,
                                String threadExecutorNamingPattern)

Constructor to set necessary information for underlying ExecutorService instance.

Parameters:

numberOfThreads -

pentahoSession -

threadMasterName -

threadExecutorNamingPattern -

PentahoAsyncThreadRunner

public PentahoAsyncThreadRunner(int numberOfThreads,
                                org.pentaho.platform.api.engine.IPentahoSession pentahoSession)

Constructor to set necessary information for underlying ExecutorService instance.

Parameters:

numberOfThreads -

pentahoSession -

Method Detail

asyncRun

public <T> Thread asyncRun(Collection<? extends Callable<T>> tasks)

Asynchronously execute all tasks. Setup overhead for initialization of threading infrastructure will have minimal or no effect on runtime execution of calling class. Wrapper around ExecutorService.

Parameters:

tasks - Collection of tasks that will be executed. For each callable, Return non-empty string for success, null otherwise.

Returns:

thread used to execute the running of the tasks. The function Thread.start() will have already been called.