electric.util.dictionary.persistent
Class PersistentDictionary

java.lang.Object
  java.util.Dictionary
      electric.util.dictionary.persistent.PersistentDictionary

All Implemented Interfaces:

IDictionary, IPersistentDictionary

public class PersistentDictionary

extends java.util.Dictionary

implements IPersistentDictionary

PersistentDictionary is an implementation of Dictionary that allows the individual entries to be stored in a filesystem directory. Each entry is allocated its own file whose name is based on the key.

Author:

webMethods

Field Summary

static int

VERSION

Constructor Summary

PersistentDictionary(java.lang.String root)

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

PersistentDictionary(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.
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)
static void	setSyncCycle(int milliseconds)
int	size()
void	sync()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

VERSION

public static final int VERSION

See Also:

Constant Field Values

Constructor Detail

PersistentDictionary

public PersistentDictionary(java.lang.String root)

Parameters:

root -

PersistentDictionary

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

Parameters:

root -

delete -

PersistentDictionary

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

Parameters:

root -

delete -

lazy -

Method Detail

toString

public java.lang.String toString()

getRoot

public java.lang.String getRoot()

get

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

Specified by:

get in interface IDictionary

Parameters:

key -

Throws:

WrappedException

put

public java.lang.Object put(java.lang.Object key,
                            java.lang.Object value)
                     throws java.lang.IllegalArgumentException,
                            WrappedException

Specified by:

put in interface IDictionary

Parameters:

key -

value -

Throws:

java.lang.IllegalArgumentException

WrappedException

remove

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

Specified by:

remove in interface IDictionary

Parameters:

key -

size

public int size()

Specified by:

size in interface IDictionary

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface IDictionary

keys

public java.util.Enumeration keys()

Specified by:

keys in interface IDictionary

elements

public java.util.Enumeration elements()

Specified by:

elements in interface IDictionary

peek

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

Specified by:

peek in interface IDictionary

Parameters:

key -

load

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

Specified by:

load in interface IPersistentDictionary

Parameters:

key -

Throws:

WrappedException

clear

public void clear()

Specified by:

clear in interface IPersistentDictionary

delete

public void delete()

Specified by:

delete in interface IPersistentDictionary

getEncoded

public boolean getEncoded()

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

Specified by:

getEncoded in interface IPersistentDictionary

setEncoded

public void setEncoded(boolean encoded)

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

Specified by:

setEncoded in interface IPersistentDictionary

Parameters:

encoded - The new encoded mode.

setSyncCycle

public static void setSyncCycle(int milliseconds)

Parameters:

milliseconds -

setSync

public void setSync(boolean flag)

Specified by:

setSync in interface IPersistentDictionary

Parameters:

flag -

getSync

public boolean getSync()

Specified by:

getSync in interface IPersistentDictionary

sync

public void sync()

Specified by:

sync in interface IPersistentDictionary