org.jbpt.bp.sim

Class RelSetSizeCache

java.lang.Object

org.jbpt.bp.sim.RelSetSizeCache

public class RelSetSizeCache
extends Object

Cache for relation sizes of relation sets. Cache may be emptied by calling invalidateCache().

Author:

matthias.weidlich

Method Summary

Methods

Modifier and Type	Method and Description
void	addEntry(RelSet rs, RelSetType type, int size)
boolean	containsEntry(RelSet rs, RelSetType type)
static RelSetSizeCache	getInstance()
int	getRelationSize(RelSet rs, RelSetType type)
void	invalidateCache() Resets the internal cache that stores the sizes of relations for relation sets.

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static RelSetSizeCache getInstance()

invalidateCache

public void invalidateCache()

Resets the internal cache that stores the sizes of relations for relation sets.

containsEntry

public boolean containsEntry(RelSet rs,
                    RelSetType type)

addEntry

public void addEntry(RelSet rs,
            RelSetType type,
            int size)

getRelationSize

public int getRelationSize(RelSet rs,
                  RelSetType type)