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package com.sun.org.apache.xerces.internal.util;
/**
* Synchronized symbol table.
*
* This class moved into the util package since it's needed by multiple
* other classes (CachingParserPool, XMLGrammarCachingConfiguration).
*
* @author Andy Clark, IBM
* @version $Id: SynchronizedSymbolTable.java,v 1.6 2010-11-01 04:40:14 joehw Exp $
*/
public final class SynchronizedSymbolTable
extends SymbolTable {
//
// Data
//
/** Main symbol table. */
protected SymbolTable fSymbolTable;
//
// Constructors
//
/** Constructs a synchronized symbol table. */
public SynchronizedSymbolTable(SymbolTable symbolTable) {
fSymbolTable = symbolTable;
} // (SymbolTable)
// construct synchronized symbol table of default size
public SynchronizedSymbolTable() {
fSymbolTable = new SymbolTable();
} // init()
// construct synchronized symbol table of given size
public SynchronizedSymbolTable(int size) {
fSymbolTable = new SymbolTable(size);
} // init(int)
//
// SymbolTable methods
//
/**
* 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.
*
* @param symbol The new symbol.
*/
public String addSymbol(String symbol) {
synchronized (fSymbolTable) {
return fSymbolTable.addSymbol(symbol);
}
} // addSymbol(String)
/**
* 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.
*
* @param buffer The buffer containing the new symbol.
* @param offset The offset into the buffer of the new symbol.
* @param length The length of the new symbol in the buffer.
*/
public String addSymbol(char[] buffer, int offset, int length) {
synchronized (fSymbolTable) {
return fSymbolTable.addSymbol(buffer, offset, length);
}
} // addSymbol(char[],int,int):String
/**
* Returns true if the symbol table already contains the specified
* symbol.
*
* @param symbol The symbol to look for.
*/
public boolean containsSymbol(String symbol) {
synchronized (fSymbolTable) {
return fSymbolTable.containsSymbol(symbol);
}
} // containsSymbol(String):boolean
/**
* Returns true if the symbol table already contains the specified
* symbol.
*
* @param buffer The buffer containing the symbol to look for.
* @param offset The offset into the buffer.
* @param length The length of the symbol in the buffer.
*/
public boolean containsSymbol(char[] buffer, int offset, int length) {
synchronized (fSymbolTable) {
return fSymbolTable.containsSymbol(buffer, offset, length);
}
} // containsSymbol(char[],int,int):boolean
} // class SynchronizedSymbolTable