mondrian.rolap
Class ChildByNameConstraint

java.lang.Object
  mondrian.rolap.DefaultMemberChildrenConstraint
      mondrian.rolap.ChildByNameConstraint

All Implemented Interfaces:

MemberChildrenConstraint, SqlConstraint

 class ChildByNameConstraint
extends DefaultMemberChildrenConstraint

Constraint which optimizes the search for a child by name. This is used whenever the string representation of a member is parsed, e.g. [Customers].[All Customers].[USA].[CA]. Restricts the result to the member we are searching for.

Author:

avix

Field Summary

(package private) Object	cacheKey
(package private) String	childName

Constructor Summary

ChildByNameConstraint(Id.Segment childName)
Creates a ChildByNameConstraint.

Method Summary

void	addLevelConstraint(SqlQuery query, RolapCube baseCube, AggStar aggStar, RolapLevel level) Will be called once for the level that contains the children of a Member.Children query.
Object	getCacheKey() Returns a key that becomes part of the key for caching the result of the SQL query.
String	toString()

Methods inherited from class mondrian.rolap.DefaultMemberChildrenConstraint

addMemberConstraint, addMemberConstraint, getMaxRows, instance

Methods inherited from class java.lang.Object

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

Field Detail

childName

String childName

cacheKey

Object cacheKey

Constructor Detail

ChildByNameConstraint

public ChildByNameConstraint(Id.Segment childName)

Creates a ChildByNameConstraint.

Parameters:

childName - Name of child

Method Detail

addLevelConstraint

public void addLevelConstraint(SqlQuery query,
                               RolapCube baseCube,
                               AggStar aggStar,
                               RolapLevel level)

Description copied from interface: MemberChildrenConstraint

Will be called once for the level that contains the children of a Member.Children query. If the condition requires so, it may join the levels table to the fact table.

Specified by:

addLevelConstraint in interface MemberChildrenConstraint

Overrides:

addLevelConstraint in class DefaultMemberChildrenConstraint

Parameters:

query - the query to modify

baseCube - base cube for virtual members

aggStar - Aggregate table, or null if query is against fact table

level - the level that contains the children

toString

public String toString()

Overrides:

toString in class DefaultMemberChildrenConstraint

getCacheKey

public Object getCacheKey()

Description copied from interface: SqlConstraint

Returns a key that becomes part of the key for caching the result of the SQL query. So SqlConstraint instances that produce the same SQL resultset must return equal keys in terms of equal() and hashCode().

Specified by:

getCacheKey in interface SqlConstraint

Overrides:

getCacheKey in class DefaultMemberChildrenConstraint

Returns:

valid key or null to prevent the result from being cached