org.apache.xerces.util

Class 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,v 1.3 2004/02/24 23:15:53 mrglavas Exp $
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

TABLE_SIZE, fBuckets, fCount, fLoadFactor, fTableSize, fThreshold

Constructor Summary

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

Method Summary

String
addSymbol(String symbol)
Adds the specified symbol to the symbol table and returns a reference to the unique symbol.
String
addSymbol(char[] buffer, int offset, int length)
Adds the specified symbol to the symbol table and returns a reference to the unique symbol.
int
hash(String symbol)
Returns a hashcode value for the specified symbol.
int
hash(char[] buffer, int offset, int length)
Returns a hashcode value for the specified symbol information.

Methods inherited from class org.apache.xerces.util.SymbolTable

addSymbol, addSymbol, containsSymbol, containsSymbol, hash, hash, rehash

Field Details

fSymbolTable

protected SymbolTable fSymbolTable
Main symbol table.

Constructor Details

ShadowedSymbolTable

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

Method Details

addSymbol

public String addSymbol(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 interface SymbolTable
Parameters:
symbol - The new symbol.

addSymbol

public 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 interface 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(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 interface 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 interface 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.

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