org.eclipse.birt.data.engine.api.querydefn
Class QueryExecutionHints

java.lang.Object
  org.eclipse.birt.data.engine.api.querydefn.QueryExecutionHints

All Implemented Interfaces:

IQueryExecutionHints

public class QueryExecutionHints
extends java.lang.Object
implements IQueryExecutionHints

This is an implementation of IQueryExecutionHints.

Constructor Summary

QueryExecutionHints()

Method Summary

void	addTargetGroupInstance(IGroupInstanceInfo info) add target group instance
boolean	doSortBeforeGrouping() Indicate whether should we do sort before grouping.
boolean	enablePushDown() Indicate whether should we enable the pushdown of sort/filter/aggregation to ODA whenever applicable.
java.util.List<IGroupInstanceInfo>	getTargetGroupInstances() Return a list of IGroupInstanceInfo instances that is needed in target ResultSet.
void	setEnablePushDown(boolean enablePushDown) Set whether should the pushdown be enabled.
void	setSortBeforeGrouping(boolean doSortBeforeGrouping) Set whether to sort before grouping.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryExecutionHints

public QueryExecutionHints()

Method Detail

setSortBeforeGrouping

public void setSortBeforeGrouping(boolean doSortBeforeGrouping)

Description copied from interface: IQueryExecutionHints

Set whether to sort before grouping.

Specified by:

setSortBeforeGrouping in interface IQueryExecutionHints

Parameters:

doSortBeforeGrouping -

doSortBeforeGrouping

public boolean doSortBeforeGrouping()

Description copied from interface: IQueryExecutionHints

Indicate whether should we do sort before grouping.

Specified by:

doSortBeforeGrouping in interface IQueryExecutionHints

Returns:

getTargetGroupInstances

public java.util.List<IGroupInstanceInfo> getTargetGroupInstances()

Return a list of IGroupInstanceInfo instances that is needed in target ResultSet.

Specified by:

getTargetGroupInstances in interface IQueryExecutionHints

Returns:

addTargetGroupInstance

public void addTargetGroupInstance(IGroupInstanceInfo info)

add target group instance

Specified by:

addTargetGroupInstance in interface IQueryExecutionHints

enablePushDown

public boolean enablePushDown()

Description copied from interface: IQueryExecutionHints

Indicate whether should we enable the pushdown of sort/filter/aggregation to ODA whenever applicable.

Specified by:

enablePushDown in interface IQueryExecutionHints

Returns:

setEnablePushDown

public void setEnablePushDown(boolean enablePushDown)

Description copied from interface: IQueryExecutionHints

Set whether should the pushdown be enabled.

Specified by:

setEnablePushDown in interface IQueryExecutionHints