com.knowgate.dataobjs
Class DBSubsetCache

java.lang.Object
  com.knowgate.dataobjs.DBSubsetCache

public final class DBSubsetCache
extends java.lang.Object

Local Cache for DBSubset Objects

Nested Class Summary

class

DBSubsetCache.DBCacheEntry

Field Summary

int	iTopIndex
int	iUsed

Constructor Summary

DBSubsetCache()
Default constructor Cache capacity is set to 100

DBSubsetCache(int iCapacity)

Method Summary

int	capacity() Get Maximum number of entries that cache can hold
void	clear() Clear cache
void	clear(java.lang.String sTable) Remove all entries from cache that are registers from a given table
boolean	expire(java.lang.String sKey) Remove a cache entry
DBSubset	get(java.lang.String sKey) Get DBSubset from cache
DBSubsetCache.DBCacheEntry	getEntry(java.lang.String sKey) Get DBCacheEntry from cache
java.lang.String	getKey(int iEntryIndex)
void	put(java.lang.String sTableName, java.lang.String sKey, DBSubset oDBSS) Add new entry to cache
void	replace(java.lang.String sTableName, java.lang.String sKey, DBSubset oDBSS) Replace a cache entry
void	setKey(java.lang.String sKey, int iEntryIndex)

Methods inherited from class java.lang.Object

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

Field Detail

iTopIndex

public int iTopIndex

iUsed

public int iUsed

Constructor Detail

DBSubsetCache

public DBSubsetCache()

Default constructor

Cache capacity is set to 100

DBSubsetCache

public DBSubsetCache(int iCapacity)

Parameters:

iCapacity - Maximum number of entries that cache can hold

Method Detail

capacity

public int capacity()

Get Maximum number of entries that cache can hold

put

public void put(java.lang.String sTableName,
                java.lang.String sKey,
                DBSubset oDBSS)

Add new entry to cache

Parameters:

sTableName - Associated table (optional)

sKey - Unique key for cache entry

oDBSS - Stored DBSubset

expire

public boolean expire(java.lang.String sKey)

Remove a cache entry

Parameters:

sKey - Unique key for cache entry

Returns:

true if cache already contained an entry with given key, false if no entry was removed from cache.

replace

public void replace(java.lang.String sTableName,
                    java.lang.String sKey,
                    DBSubset oDBSS)

Replace a cache entry

Parameters:

sTableName - Associated table (optional)

sKey - Unique key for cache entry

oDBSS - New DBSubset to be stored

clear

public void clear()

Clear cache

clear

public void clear(java.lang.String sTable)

Remove all entries from cache that are registers from a given table

Parameters:

sTable - Table Name

get

public DBSubset get(java.lang.String sKey)

Get DBSubset from cache

Parameters:

sKey - Unique key for cache entry

Returns:

DBSubset reference or null

getEntry

public DBSubsetCache.DBCacheEntry getEntry(java.lang.String sKey)

Get DBCacheEntry from cache

Parameters:

sKey - Unique key for cache entry

Returns:

DBCacheEntry reference or null

getKey

public java.lang.String getKey(int iEntryIndex)

setKey

public void setKey(java.lang.String sKey,
                   int iEntryIndex)