mondrian.rolap

Class HierarchyUsage

java.lang.Object

mondrian.rolap.HierarchyUsage

public class HierarchyUsage
extends Object

A HierarchyUsage is the usage of a hierarchy in the context of a cube. Private hierarchies can only be used in their own cube. Public hierarchies can be used in several cubes. The problem comes when several cubes which the same public hierarchy are brought together in one virtual cube. There are now several usages of the same public hierarchy. Which one to use? It depends upon what measure we are currently using. We should use the hierarchy usage for the fact table which underlies the measure. That is what determines the foreign key to join on. A HierarchyUsage is identified by (hierarchy.sharedHierarchy, factTable) if the hierarchy is shared, or (hierarchy, factTable) if it is private.

Since:

21 March, 2002

Author:

jhyde

Field Summary

Fields

Modifier and Type	Field and Description
protected MondrianDef.Relation	fact Fact table (or relation) which this usage is joining to.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
String	getForeignKey()
String	getFullName()
String	getHierarchyName()
MondrianDef.Expression	getJoinExp()
MondrianDef.Relation	getJoinTable()
mondrian.rolap.HierarchyUsage.Kind	getKind()
String	getLevelName()
protected org.apache.log4j.Logger	getLogger()
String	getName()
String	getSource()
String	getUsagePrefix()
int	hashCode()
boolean	isPrivate()
boolean	isShared()
boolean	isVirtual()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

fact

protected final MondrianDef.Relation fact

Fact table (or relation) which this usage is joining to. This identifies the usage, and determines which join conditions need to be used.

Method Detail

getLogger

protected org.apache.log4j.Logger getLogger()

getHierarchyName

public String getHierarchyName()

getFullName

public String getFullName()

getName

public String getName()

getForeignKey

public String getForeignKey()

getSource

public String getSource()

getLevelName

public String getLevelName()

getUsagePrefix

public String getUsagePrefix()

getJoinTable

public MondrianDef.Relation getJoinTable()

getJoinExp

public MondrianDef.Expression getJoinExp()

getKind

public mondrian.rolap.HierarchyUsage.Kind getKind()

isShared

public boolean isShared()

isVirtual

public boolean isVirtual()

isPrivate

public boolean isPrivate()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object