mondrian.rolap.aggmatcher

Class AggTableManager

java.lang.Object

mondrian.rolap.aggmatcher.AggTableManager

public class AggTableManager
extends Object

Manages aggregate tables.

It is used as follows:

• A RolapSchema creates an AggTableManager, and stores it in a member variable to ensure that it is not garbage-collected.
• The AggTableManager creates and registers Trigger objects, so that it is notified when properties pertinent to aggregate tables change.
• The RolapSchema calls initialize(), which scans the JDBC catalog and identifies aggregate tables.
• For each aggregate table, it creates an AggStar and calls RolapStar.addAggStar(AggStar).

Author:

Richard M. Emberson

Constructor Summary

Constructors

Constructor and Description
AggTableManager(RolapSchema schema)

Method Summary

Methods

Modifier and Type	Method and Description
(package private) void	bindToStar(JdbcSchema.Table dbFactTable, RolapStar star, MessageRecorder msgRecorder) This method mines the RolapStar and annotes the JdbcSchema.Table dbFactTable by creating JdbcSchema.Table.Column.Usage instances.
void	finalCleanUp() This should ONLY be called if the AggTableManager is no longer going to be used.
protected List<ExplicitRules.Group>	getAggGroups(RolapStar star) Returns a list containing every ExplicitRules.Group in every cubes in a given RolapStar.
org.apache.log4j.Logger	getLogger() Get the Logger.
void	initialize() Initializes this object, loading all aggregate tables and associating them with RolapStars.

Methods inherited from class java.lang.Object

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

Constructor Detail

AggTableManager

public AggTableManager(RolapSchema schema)

Method Detail

finalCleanUp

public void finalCleanUp()

This should ONLY be called if the AggTableManager is no longer going to be used. In fact, it should only be called indirectly by its associated RolapSchema object.

getLogger

public org.apache.log4j.Logger getLogger()

Get the Logger.

initialize

public void initialize()

Initializes this object, loading all aggregate tables and associating them with RolapStars. This method should only be called once.

getAggGroups

protected List<ExplicitRules.Group> getAggGroups(RolapStar star)

Returns a list containing every ExplicitRules.Group in every cubes in a given RolapStar.

bindToStar

void bindToStar(JdbcSchema.Table dbFactTable,
              RolapStar star,
              MessageRecorder msgRecorder)
          throws SQLException

This method mines the RolapStar and annotes the JdbcSchema.Table dbFactTable by creating JdbcSchema.Table.Column.Usage instances. For example, a measure in the RolapStar becomes a measure usage for the column with the same name and a RolapStar foreign key column becomes a foreign key usage for the column with the same name.

Parameters:

dbFactTable -

star -

msgRecorder -

Throws:

SQLException