mondrian.rolap
Class RolapNativeFilter.FilterConstraint

java.lang.Object
  mondrian.rolap.SqlContextConstraint
      mondrian.rolap.RolapNativeSet.SetConstraint
          mondrian.rolap.RolapNativeFilter.FilterConstraint

All Implemented Interfaces:

MemberChildrenConstraint, SqlConstraint, TupleConstraint

Enclosing class:

RolapNativeFilter

static class RolapNativeFilter.FilterConstraint
extends RolapNativeSet.SetConstraint

Field Summary

(package private) String

filterExpr

Fields inherited from class mondrian.rolap.RolapNativeSet.SetConstraint

args

Fields inherited from class mondrian.rolap.SqlContextConstraint

cacheKey

Constructor Summary

RolapNativeFilter.FilterConstraint(RolapNativeSet.CrossJoinArg[] args, RolapEvaluator evaluator, String filterByExpr)

Method Summary

void	addConstraint(SqlQuery sqlQuery, RolapCube baseCube) Called from LevelMembers: restricts the SQL resultset to the current context.
Object	getCacheKey() returns a key to cache the result
protected boolean	isJoinRequired() we alwas need to join the fact table because we want to evalutate the filter expression against a fact.

Methods inherited from class mondrian.rolap.RolapNativeSet.SetConstraint

getMemberChildrenConstraint

Methods inherited from class mondrian.rolap.SqlContextConstraint

addLevelConstraint, addMemberConstraint, addMemberConstraint, getEvaluator, isValidContext, isValidContext

Methods inherited from class java.lang.Object

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

Field Detail

filterExpr

String filterExpr

Constructor Detail

RolapNativeFilter.FilterConstraint

public RolapNativeFilter.FilterConstraint(RolapNativeSet.CrossJoinArg[] args,
                                          RolapEvaluator evaluator,
                                          String filterByExpr)

Method Detail

isJoinRequired

protected boolean isJoinRequired()

we alwas need to join the fact table because we want to evalutate the filter expression against a fact.

Overrides:

isJoinRequired in class RolapNativeSet.SetConstraint

addConstraint

public void addConstraint(SqlQuery sqlQuery,
                          RolapCube baseCube)

Description copied from class: SqlContextConstraint

Called from LevelMembers: restricts the SQL resultset to the current context.

Specified by:

addConstraint in interface TupleConstraint

Overrides:

addConstraint in class RolapNativeSet.SetConstraint

Parameters:

sqlQuery - the query to modify

baseCube - base cube for virtual cube constraints

getCacheKey

public Object getCacheKey()

Description copied from class: RolapNativeSet.SetConstraint

returns a key to cache the result

Specified by:

getCacheKey in interface SqlConstraint

Overrides:

getCacheKey in class RolapNativeSet.SetConstraint

Returns:

valid key or null to prevent the result from being cached