org.apache.xerces.util
Class ShadowedSymbolTable

java.lang.Object
  extended by org.apache.xerces.util.SymbolTable
      extended by org.apache.xerces.util.ShadowedSymbolTable

public final class ShadowedSymbolTable
extends SymbolTable

Shadowed symbol table. The table has a reference to the main symbol table and is not allowed to add new symbols to the main symbol table. New symbols are added to the shadow symbol table and are local to the component using this table.

Version:
$Id: ShadowedSymbolTable.java 447241 2006-09-18 05:12:57Z mrglavas $
Author:
Andy Clark IBM

Nested Class Summary
 
Nested classes/interfaces inherited from class org.apache.xerces.util.SymbolTable
SymbolTable.Entry
 
Field Summary
protected  SymbolTable fSymbolTable
          Main symbol table.
 
Fields inherited from class org.apache.xerces.util.SymbolTable
fBuckets, fCount, fLoadFactor, fTableSize, fThreshold, TABLE_SIZE
 
Constructor Summary
ShadowedSymbolTable(SymbolTable symbolTable)
          Constructs a shadow of the specified symbol table.
 
Method Summary
 java.lang.String addSymbol(char[] buffer, int offset, int length)
          Adds the specified symbol to the symbol table and returns a reference to the unique symbol.
 java.lang.String addSymbol(java.lang.String symbol)
          Adds the specified symbol to the symbol table and returns a reference to the unique symbol.
 int hash(char[] buffer, int offset, int length)
          Returns a hashcode value for the specified symbol information.
 int hash(java.lang.String symbol)
          Returns a hashcode value for the specified symbol.
 
Methods inherited from class org.apache.xerces.util.SymbolTable
containsSymbol, containsSymbol, rehash
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

fSymbolTable

protected SymbolTable fSymbolTable
Main symbol table.

Constructor Detail

ShadowedSymbolTable

public ShadowedSymbolTable(SymbolTable symbolTable)
Constructs a shadow of the specified symbol table.

Method Detail

addSymbol

public java.lang.String addSymbol(java.lang.String symbol)
Adds the specified symbol to the symbol table and returns a reference to the unique symbol. If the symbol already exists, the previous symbol reference is returned instead, in order guarantee that symbol references remain unique.

Overrides:
addSymbol in class SymbolTable
Parameters:
symbol - The new symbol.

addSymbol

public java.lang.String addSymbol(char[] buffer,
                                  int offset,
                                  int length)
Adds the specified symbol to the symbol table and returns a reference to the unique symbol. If the symbol already exists, the previous symbol reference is returned instead, in order guarantee that symbol references remain unique.

Overrides:
addSymbol in class SymbolTable
Parameters:
buffer - The buffer containing the new symbol.
offset - The offset into the buffer of the new symbol.
length - The length of the new symbol in the buffer.

hash

public int hash(java.lang.String symbol)
Returns a hashcode value for the specified symbol. The value returned by this method must be identical to the value returned by the hash(char[],int,int) method when called with the character array that comprises the symbol string.

Overrides:
hash in class SymbolTable
Parameters:
symbol - The symbol to hash.

hash

public int hash(char[] buffer,
                int offset,
                int length)
Returns a hashcode value for the specified symbol information. The value returned by this method must be identical to the value returned by the hash(String) method when called with the string object created from the symbol information.

Overrides:
hash in class SymbolTable
Parameters:
buffer - The character buffer containing the symbol.
offset - The offset into the character buffer of the start of the symbol.
length - The length of the symbol.


Copyright 1999-2010 The Apache Software Foundation. All Rights Reserved.