com.googlecode.icegem.query.bucketoriented
Class BucketOrientedQueryFunction

java.lang.Object
  com.gemstone.gemfire.cache.execute.FunctionAdapter
      com.googlecode.icegem.query.bucketoriented.BucketOrientedQueryFunction

All Implemented Interfaces:

com.gemstone.gemfire.cache.execute.Function, Serializable

public class BucketOrientedQueryFunction
extends com.gemstone.gemfire.cache.execute.FunctionAdapter

Function for executing query on a specified set of buckets. Do not call this function directly. Use bucket oriented query service instead.

Author:

Andrey Stepanov aka standy

See Also:

BucketOrientedQueryService, Serialized Form

Constructor Summary

BucketOrientedQueryFunction()

Method Summary

void	execute(com.gemstone.gemfire.cache.execute.FunctionContext functionContext) Executes query using arguments query string and query parameters.
String	getId() Gets function id.
boolean	optimizeForWrite() If you use redundancy for partitioned region then GemFire will send this function to those members that contain primary or redundant copy of bucket(s).

Methods inherited from class com.gemstone.gemfire.cache.execute.FunctionAdapter

hasResult, isHA

Methods inherited from class java.lang.Object

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

Constructor Detail

BucketOrientedQueryFunction

public BucketOrientedQueryFunction()

Method Detail

execute

public void execute(com.gemstone.gemfire.cache.execute.FunctionContext functionContext)

Executes query using arguments query string and query parameters.

Specified by:

execute in interface com.gemstone.gemfire.cache.execute.Function

Specified by:

execute in class com.gemstone.gemfire.cache.execute.FunctionAdapter

Parameters:

functionContext - Function context.

getId

public String getId()

Gets function id.

Specified by:

getId in interface com.gemstone.gemfire.cache.execute.Function

Specified by:

getId in class com.gemstone.gemfire.cache.execute.FunctionAdapter

Returns:

Function id.

optimizeForWrite

public boolean optimizeForWrite()

If you use redundancy for partitioned region then GemFire will send this function to those members that contain primary or redundant copy of bucket(s). It can increase number of members that will execute this function. But if you want to send this function only to those members that store primary copy of bucket, you must enable a function option "optimizeForWrite". See a forum link http://forums.gemstone.com/viewtopic.php?f=3&t=496&hilit=bucket+Id&sid=f3b823b748bb253e5019e489c8480fbd for details.

Specified by:

optimizeForWrite in interface com.gemstone.gemfire.cache.execute.Function

Overrides:

optimizeForWrite in class com.gemstone.gemfire.cache.execute.FunctionAdapter

Returns:

boolean