org.eclipse.birt.chart.factory
Interface IGroupedDataRowExpressionEvaluator

All Superinterfaces:

IDataRowExpressionEvaluator

All Known Implementing Classes:

AbstractGroupedDataRowExpressionEvaluator

public interface IGroupedDataRowExpressionEvaluator
extends IDataRowExpressionEvaluator

The interface is declared to wrap IQueryResultSet and evaluate grouped, uni-dimensional data.

Method Summary

int[]	getGroupBreaks(int groupLevel) Returns the group breaks of specified group level.
boolean[]	getGroupStatus() Returns if group is enabled in each group-level.
boolean	needCategoryGrouping() Returns if category grouping needs to be done in chart engine.
boolean	needOptionalGrouping() Returns if optional grouping needs to be done in chart engine.

Methods inherited from interface org.eclipse.birt.chart.factory.IDataRowExpressionEvaluator

close, evaluate, evaluateGlobal, first, next

Method Detail

getGroupBreaks

int[] getGroupBreaks(int groupLevel)

Returns the group breaks of specified group level. null means no group breaks.

Parameters:

groupExp -

Returns:

group breaks

needOptionalGrouping

boolean needOptionalGrouping()

Returns if optional grouping needs to be done in chart engine.

Returns:

true then do optional grouping in chart engine.

needCategoryGrouping

boolean needCategoryGrouping()

Returns if category grouping needs to be done in chart engine.

Returns:

true then do category grouping in chart engine.

getGroupStatus

boolean[] getGroupStatus()

Returns if group is enabled in each group-level.