electric.util.dictionary.transactional
Class TransactionalDictionary

java.lang.Object
  java.util.Dictionary
      electric.util.dictionary.transactional.TransactionalDictionary

public class TransactionalDictionary

extends java.util.Dictionary

TransactionalDictionary is a subclass of Dictionary that supports multi-threaded transactions. An operation such as put() or remove() that occurs outside of a transaction is committed immediately. When a thread performs an operation inside of a transaction for the first time, a View is created that provides a view onto the underlying TransactionDictionary and that caches uncommitted operations. If the transaction is rolled back, the View is discarded. If the transaction is committed, the View commits the cached uncommitted operations, thus updating the underlying TransactionalDictionary.

Author:

webMethods

Constructor Summary

TransactionalDictionary(IPersistentDictionary persistentDictionary)

TransactionalDictionary(java.lang.String root)

TransactionalDictionary(java.lang.String root, boolean delete)

TransactionalDictionary(java.lang.String root, boolean delete, boolean lazy)

Method Summary

void	clear()
void	delete()
java.util.Enumeration	elements()
java.lang.Object	get(java.lang.Object key)
boolean	getEncoded() Return true if I use an EncodedWriter to persist objects to storage.
IPersistentDictionary	getPersistentDictionary()
java.lang.String	getRoot()
boolean	getSync()
boolean	isEmpty()
java.util.Enumeration	keys()
java.lang.Object	load(java.lang.Object key)
java.lang.Object	peek(java.lang.Object key)
java.lang.Object	put(java.lang.Object key, java.lang.Object value)
java.lang.Object	remove(java.lang.Object key)
void	setEncoded(boolean encoded) If the encoded argument is true, use an EncodedWriter to persist objects to storage, otherwise use a LiteralWriter.
void	setSync(boolean flag)
int	size()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

TransactionalDictionary

public TransactionalDictionary(java.lang.String root)

Parameters:

root -

TransactionalDictionary

public TransactionalDictionary(java.lang.String root,
                               boolean delete)

Parameters:

root -

delete -

TransactionalDictionary

public TransactionalDictionary(java.lang.String root,
                               boolean delete,
                               boolean lazy)

Parameters:

root -

delete -

lazy -

TransactionalDictionary

public TransactionalDictionary(IPersistentDictionary persistentDictionary)

Parameters:

persistentDictionary -

Method Detail

toString

public java.lang.String toString()

getRoot

public java.lang.String getRoot()

get

public java.lang.Object get(java.lang.Object key)

Parameters:

key -

put

public java.lang.Object put(java.lang.Object key,
                            java.lang.Object value)

Parameters:

key -

value -

remove

public java.lang.Object remove(java.lang.Object key)

Parameters:

key -

size

public int size()

isEmpty

public boolean isEmpty()

keys

public java.util.Enumeration keys()

elements

public java.util.Enumeration elements()

clear

public void clear()

delete

public void delete()

load

public java.lang.Object load(java.lang.Object key)

Parameters:

key -

peek

public java.lang.Object peek(java.lang.Object key)

Parameters:

key -

setSync

public void setSync(boolean flag)

Parameters:

flag -

getSync

public boolean getSync()

getPersistentDictionary

public IPersistentDictionary getPersistentDictionary()

getEncoded

public boolean getEncoded()

Return true if I use an EncodedWriter to persist objects to storage.

setEncoded

public void setEncoded(boolean encoded)

If the encoded argument is true, use an EncodedWriter to persist objects to storage, otherwise use a LiteralWriter.

Parameters:

encoded - The new encoded mode.