org.onemind.commons.java.datastructure
Class SimpleNametable

java.lang.Object
  org.onemind.commons.java.datastructure.SimpleNametable

All Implemented Interfaces:

Nametable

public class SimpleNametable
extends java.lang.Object
implements Nametable

A simple implementation of nametable

Author:

TiongHiang Lee (thlee@onemindsoft.org)

Field Summary

private java.util.Map

_table

Constructor Summary

SimpleNametable(java.util.Map m)
Constructor

Method Summary

java.lang.Object	access(java.lang.String name) Access the value associated with name
java.util.Map	asMap() Return the name table as a map
java.lang.Object	assign(java.lang.String name, java.lang.Object value) Assign a variable in the name table
boolean	containsName(java.lang.String name) Whether the nametable contains the name
void	declare(java.lang.String name, java.lang.Object value) Declare a variable in the name table
java.lang.String	toString()
void	undeclare(java.lang.String name) Undeclare the name

Methods inherited from class java.lang.Object

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

Field Detail

_table

private final java.util.Map _table

Constructor Detail

SimpleNametable

public SimpleNametable(java.util.Map m)

Constructor

Parameters:

m - the name

Method Detail

declare

public void declare(java.lang.String name,
                    java.lang.Object value)

Declare a variable in the name table

Specified by:

declare in interface Nametable

Parameters:

name - the name

value - the value

assign

public java.lang.Object assign(java.lang.String name,
                               java.lang.Object value)

Assign a variable in the name table

Specified by:

assign in interface Nametable

Parameters:

name - the name

value - the value

Returns:

the old value, or null

containsName

public boolean containsName(java.lang.String name)

Whether the nametable contains the name

Specified by:

containsName in interface Nametable

Parameters:

name - the name

Returns:

true if contains the name

access

public java.lang.Object access(java.lang.String name)

Access the value associated with name

Specified by:

access in interface Nametable

Returns:

undeclare

public void undeclare(java.lang.String name)

Undeclare the name

Specified by:

undeclare in interface Nametable

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

asMap

public java.util.Map asMap()

Return the name table as a map

Specified by:

asMap in interface Nametable

Returns:

unmodifiable map representation of the name table