org.dashbuilder.dataset.engine.filter

Class DefaultFilterAlgorithm

java.lang.Object

org.dashbuilder.dataset.engine.filter.DefaultFilterAlgorithm

All Implemented Interfaces:

DataSetFilterAlgorithm

public class DefaultFilterAlgorithm
extends Object
implements DataSetFilterAlgorithm

Default data set filter algorithm.

Constructor Summary

Constructors

Constructor and Description
DefaultFilterAlgorithm()

Method Summary

Modifier and Type	Method and Description
DataSetFunction	buildFunction(DataSetFilterContext filterContext, ColumnFilter columnFilter)
List<Integer>	filter(DataSetHandler ctx, ColumnFilter columnFilter) Filter the specified data set according the filter criteria.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultFilterAlgorithm

public DefaultFilterAlgorithm()

Method Detail

filter

public List<Integer> filter(DataSetHandler ctx,
                            ColumnFilter columnFilter)

Description copied from interface: DataSetFilterAlgorithm

Filter the specified data set according the filter criteria.

Specified by:

filter in interface DataSetFilterAlgorithm

Parameters:

ctx - The data set context to filter

columnFilter - The column filter to apply.

Returns:

A list of ordinals containing only the rows that surpass the filter.

buildFunction

public DataSetFunction buildFunction(DataSetFilterContext filterContext,
                                     ColumnFilter columnFilter)