org.apache.jackrabbit.core.nodetype
Class BitsetENTCacheImpl

java.lang.Object
  org.apache.jackrabbit.core.nodetype.BitsetENTCacheImpl

All Implemented Interfaces:

Cloneable, EffectiveNodeTypeCache, Dumpable

public class BitsetENTCacheImpl
extends Object
implements EffectiveNodeTypeCache

Implements an effective node type cache that uses a bit set for storing the information about participating node types in a set.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.jackrabbit.core.nodetype.EffectiveNodeTypeCache

EffectiveNodeTypeCache.Key

Method Summary

Object	clone()
boolean	contains(EffectiveNodeTypeCache.Key key) Checks if the effective node type for the given key exists.
void	dump(PrintStream ps) Dumps the state of this instance in a human readable format for diagnostic purposes.
EffectiveNodeTypeCache.Key	findBest(EffectiveNodeTypeCache.Key key) Searches the best key k for which the given key is a super set, i.e.
EffectiveNodeType	get(EffectiveNodeTypeCache.Key key) Returns the effective node type for the given key or null if the desired node type is not cached.
EffectiveNodeTypeCache.Key	getKey(Name[] ntNames) Returns a key for an effective node type that consists of the given node type names.
void	invalidate(Name name) Removes all effective node types that are aggregated with the node type of the given name.
void	put(EffectiveNodeType ent) Puts an effective node type to the cache.
void	put(EffectiveNodeTypeCache.Key key, EffectiveNodeType ent) Puts an effective node type to the cache for the given key.

Methods inherited from class java.lang.Object

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

Method Detail

getKey

public EffectiveNodeTypeCache.Key getKey(Name[] ntNames)

Returns a key for an effective node type that consists of the given node type names.

Specified by:

getKey in interface EffectiveNodeTypeCache

Parameters:

ntNames - the array of node type names for the effective node type

Returns:

the key to an effective node type.

put

public void put(EffectiveNodeType ent)

Puts an effective node type to the cache. The key is internally generated from the set of merged node types.

Specified by:

put in interface EffectiveNodeTypeCache

Parameters:

ent - the effective node type to put to the cache

put

public void put(EffectiveNodeTypeCache.Key key,
                EffectiveNodeType ent)

Puts an effective node type to the cache for the given key.

Specified by:

put in interface EffectiveNodeTypeCache

Parameters:

key - the key for the effective node type

ent - the effective node type to put to the cache

findBest

public EffectiveNodeTypeCache.Key findBest(EffectiveNodeTypeCache.Key key)

Searches the best key k for which the given key is a super set, i.e. for which EffectiveNodeTypeCache.contains(Key)} returns true. If an already cached effective node type matches the key it is returned.

Specified by:

findBest in interface EffectiveNodeTypeCache

Parameters:

key - the key for which the subkey is to be searched

Returns:

the best key or null if no key could be found.

invalidate

public void invalidate(Name name)

Removes all effective node types that are aggregated with the node type of the given name.

Specified by:

invalidate in interface EffectiveNodeTypeCache

Parameters:

name - the name of the node type.

contains

public boolean contains(EffectiveNodeTypeCache.Key key)

Checks if the effective node type for the given key exists.

Specified by:

contains in interface EffectiveNodeTypeCache

Parameters:

key - the key to check

Returns:

true if the effective node type is cached; false otherwise.

get

public EffectiveNodeType get(EffectiveNodeTypeCache.Key key)

Returns the effective node type for the given key or null if the desired node type is not cached.

Specified by:

get in interface EffectiveNodeTypeCache

Parameters:

key - the key for the effective node type.

Returns:

the effective node type or null

clone

public Object clone()

Specified by:

clone in interface EffectiveNodeTypeCache

Overrides:

clone in class Object

dump

public void dump(PrintStream ps)

Dumps the state of this instance in a human readable format for diagnostic purposes.

Specified by:

dump in interface Dumpable

Parameters:

ps - stream to dump state to