org.eclipse.birt.chart.factory
Class AbstractGroupedDataRowExpressionEvaluator

java.lang.Object
  org.eclipse.birt.chart.factory.AbstractGroupedDataRowExpressionEvaluator

All Implemented Interfaces:

IDataRowExpressionEvaluator, IGroupedDataRowExpressionEvaluator

public abstract class AbstractGroupedDataRowExpressionEvaluator
extends java.lang.Object
implements IGroupedDataRowExpressionEvaluator

The abstract class is just defined for the grouping integration with BIRT report, Stand-alone mode of chart or chart default grouping mode can't use the class and its implementation.

Through the class, it returns appropriate expressions if current has aggregations defined in chart.

Since:

2.3

Constructor Summary

AbstractGroupedDataRowExpressionEvaluator()

Method Summary

java.util.List<java.lang.String>	getExpressions(org.eclipse.birt.chart.internal.datafeed.GroupingLookupHelper helper, boolean isSharingQuery) Returns appropriate expressions if current has aggregations defined in chart.
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 class java.lang.Object

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

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

getGroupBreaks

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

close, evaluate, evaluateGlobal, first, next

Constructor Detail

AbstractGroupedDataRowExpressionEvaluator

public AbstractGroupedDataRowExpressionEvaluator()

Method Detail

getExpressions

public java.util.List<java.lang.String> getExpressions(org.eclipse.birt.chart.internal.datafeed.GroupingLookupHelper helper,
                                                       boolean isSharingQuery)

Returns appropriate expressions if current has aggregations defined in chart.

Parameters:

helper -

isSharingQuery -

Returns:

expressions list

needOptionalGrouping

public boolean needOptionalGrouping()

Description copied from interface: IGroupedDataRowExpressionEvaluator

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

Specified by:

needOptionalGrouping in interface IGroupedDataRowExpressionEvaluator

Returns:

true then do optional grouping in chart engine.

needCategoryGrouping

public boolean needCategoryGrouping()

Description copied from interface: IGroupedDataRowExpressionEvaluator

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

Specified by:

needCategoryGrouping in interface IGroupedDataRowExpressionEvaluator

Returns:

true then do category grouping in chart engine.

getGroupStatus

public boolean[] getGroupStatus()

Description copied from interface: IGroupedDataRowExpressionEvaluator

Returns if group is enabled in each group-level.

Specified by:

getGroupStatus in interface IGroupedDataRowExpressionEvaluator