mondrian.rolap
Class RestrictedMemberReader

java.lang.Object
  mondrian.rolap.DelegatingMemberReader
      mondrian.rolap.RestrictedMemberReader

All Implemented Interfaces:

MemberReader, MemberSource

 class RestrictedMemberReader
extends DelegatingMemberReader

A RestrictedMemberReader reads only the members of a hierarchy allowed by a role's access profile.

Since:

Feb 26, 2003

Version:

$Id: //open/mondrian-release/3.0/src/main/mondrian/rolap/RestrictedMemberReader.java#2 $

Author:

jhyde

Field Summary

Fields inherited from class mondrian.rolap.DelegatingMemberReader

memberReader

Constructor Summary

RestrictedMemberReader(MemberReader memberReader, Role role)
Creates a RestrictedMemberReader.

Method Summary

RolapMember	getDefaultMember()
RolapMember	getLeadMember(RolapMember member, int n) Returns the member n after member in the same level (or before, if n is negative).
void	getMemberChildren(List<RolapMember> parentMembers, List<RolapMember> children) Returns all members which are a child of one of the members in parentMembers, sorted by ordinal.
void	getMemberChildren(List<RolapMember> parentMembers, List<RolapMember> children, MemberChildrenConstraint constraint) Populates a list of the children of a given set of Members, optionally applying a constraint.
void	getMemberChildren(RolapMember parentMember, List<RolapMember> children) Writes all children parentMember to children.
void	getMemberChildren(RolapMember parentMember, List<RolapMember> children, MemberChildrenConstraint constraint) Populates a list of the children of a Member, optionally applying a constraint.
RolapMember	getMemberParent(RolapMember member)
List<RolapMember>	getMembersInLevel(RolapLevel level, int startOrdinal, int endOrdinal) Returns all of the members in level whose ordinal lies between startOrdinal and endOrdinal.
List<RolapMember>	getMembersInLevel(RolapLevel level, int startOrdinal, int endOrdinal, TupleConstraint constraint) Returns the members in the given Level, optionally between a range of ordinals and applying a constraint.
List<RolapMember>	getRootMembers() Returns all members of this hierarchy which do not have a parent, sorted by ordinal.
boolean	setCache(MemberCache cache) Sets the cache which this MemberSource will write to.

Methods inherited from class mondrian.rolap.DelegatingMemberReader

compare, desubstitute, getHierarchy, getLevelMemberCount, getMemberBuilder, getMemberCount, getMemberRange, getMembers, lookupMember, substitute

Methods inherited from class java.lang.Object

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

Constructor Detail

RestrictedMemberReader

RestrictedMemberReader(MemberReader memberReader,
                       Role role)

Creates a RestrictedMemberReader.

There's no filtering to be done unless either the role has restrictions on this hierarchy, or the hierarchy is ragged; there's a pre-condition to this effect.

Parameters:

memberReader - Underlying (presumably unrestricted) member reader

role - Role whose access profile to obey. The role must have restrictions on this hierarchy

Pre-condition:

role.getAccessDetails(memberReader.getHierarchy()) != null || memberReader.getHierarchy().isRagged()

Method Detail

setCache

public boolean setCache(MemberCache cache)

Description copied from interface: MemberSource

Sets the cache which this MemberSource will write to.

Cache-writeback is optional (for example, SqlMemberSource supports it, and ArrayMemberSource does not), and the return value from this method indicates whether this object supports it.

If this method returns true, the MemberSource.getMembers(), MemberSource.getRootMembers() and MemberSource.getMemberChildren(mondrian.rolap.RolapMember, java.util.List) methods must write to the cache, in addition to returning members as a return value.

Specified by:

setCache in interface MemberSource

Overrides:

setCache in class DelegatingMemberReader

Parameters:

cache - The MemberCache which the caller would like this MemberSource to write to.

Returns:

Whether this MemberSource supports cache-writeback.

getLeadMember

public RolapMember getLeadMember(RolapMember member,
                                 int n)

Description copied from interface: MemberReader

Returns the member n after member in the same level (or before, if n is negative). Returns Hierarchy.getNullMember() if we run off the beginning or end of the level.

Specified by:

getLeadMember in interface MemberReader

Overrides:

getLeadMember in class DelegatingMemberReader

getMemberChildren

public void getMemberChildren(RolapMember parentMember,
                              List<RolapMember> children)

Description copied from interface: MemberSource

Writes all children parentMember to children.

If this object supports cache-writeback, also writes these members to the cache.

Specified by:

getMemberChildren in interface MemberSource

Overrides:

getMemberChildren in class DelegatingMemberReader

getMemberChildren

public void getMemberChildren(RolapMember parentMember,
                              List<RolapMember> children,
                              MemberChildrenConstraint constraint)

Description copied from interface: MemberReader

Populates a list of the children of a Member, optionally applying a constraint.

Specified by:

getMemberChildren in interface MemberReader

Overrides:

getMemberChildren in class DelegatingMemberReader

Parameters:

parentMember - Members whose children to find

children - List to populate with members

constraint - Constraint

getMemberChildren

public void getMemberChildren(List<RolapMember> parentMembers,
                              List<RolapMember> children)

Description copied from interface: MemberSource

Returns all members which are a child of one of the members in parentMembers, sorted by ordinal.

If this object supports cache-writeaback, also writes these members to the cache.

Specified by:

getMemberChildren in interface MemberSource

Overrides:

getMemberChildren in class DelegatingMemberReader

getMemberChildren

public void getMemberChildren(List<RolapMember> parentMembers,
                              List<RolapMember> children,
                              MemberChildrenConstraint constraint)

Description copied from interface: MemberReader

Populates a list of the children of a given set of Members, optionally applying a constraint.

Specified by:

getMemberChildren in interface MemberReader

Overrides:

getMemberChildren in class DelegatingMemberReader

Parameters:

parentMembers - List of members whose children to find

children - List to populate with members

constraint - Constraint

getRootMembers

public List<RolapMember> getRootMembers()

Description copied from interface: MemberSource

Returns all members of this hierarchy which do not have a parent, sorted by ordinal.

If this object supports cache-writeback, also writes these members to the cache.

Specified by:

getRootMembers in interface MemberSource

Overrides:

getRootMembers in class DelegatingMemberReader

Returns:

List of RolapMembers

getMembersInLevel

public List<RolapMember> getMembersInLevel(RolapLevel level,
                                           int startOrdinal,
                                           int endOrdinal)

Description copied from interface: MemberReader

Returns all of the members in level whose ordinal lies between startOrdinal and endOrdinal.

If this object supports cache-writeback, also writes these members to the cache.

Specified by:

getMembersInLevel in interface MemberReader

Overrides:

getMembersInLevel in class DelegatingMemberReader

Returns:

List of RolapMember

getMembersInLevel

public List<RolapMember> getMembersInLevel(RolapLevel level,
                                           int startOrdinal,
                                           int endOrdinal,
                                           TupleConstraint constraint)

Description copied from interface: MemberReader

Returns the members in the given Level, optionally between a range of ordinals and applying a constraint.

Specified by:

getMembersInLevel in interface MemberReader

Overrides:

getMembersInLevel in class DelegatingMemberReader

Parameters:

level - Level

startOrdinal - Ordinal of first member to retrieve

endOrdinal - Ordinal of last member to upper bound

constraint - Constraint

Returns:

list of members

getDefaultMember

public RolapMember getDefaultMember()

Specified by:

getDefaultMember in interface MemberReader

Overrides:

getDefaultMember in class DelegatingMemberReader

getMemberParent

public RolapMember getMemberParent(RolapMember member)

Specified by:

getMemberParent in interface MemberReader

Overrides:

getMemberParent in class DelegatingMemberReader