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Xalan-Java is an XSLT processor for transforming XML documents into HTML,
text, or other XML document types. It implements XSL Transformations (XSLT)
Version 1.0 and XML Path Language (XPath) Version 1.0 and can be used from
the command line, in an applet or a servlet, or as a module in other program.
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* $Id: DTMSafeStringPool.java 468653 2006-10-28 07:07:05Z minchau $
*/
package org.apache.xml.dtm.ref;
/** Like DTMStringPool, but threadsafe. It's been proposed that DTMs
* share their string pool(s); that raises threadsafety issues which
* this addresses. Of course performance is inferior to that of the
* bare-bones version.
*
* Status: Passed basic test in main().
* */
public class DTMSafeStringPool
extends DTMStringPool
{
public synchronized void removeAllElements()
{
super.removeAllElements();
}
/** @return string whose value is uniquely identified by this integer index.
* @throws java.lang.ArrayIndexOutOfBoundsException
* if index doesn't map to a string.
* */
public synchronized String indexToString(int i)
throws java.lang.ArrayIndexOutOfBoundsException
{
return super.indexToString(i);
}
/** @return integer index uniquely identifying the value of this string. */
public synchronized int stringToIndex(String s)
{
return super.stringToIndex(s);
}
/** Command-line unit test driver. This test relies on the fact that
* this version of the pool assigns indices consecutively, starting
* from zero, as new unique strings are encountered.
*/
public static void main(String[] args)
{
String[] word={
"Zero","One","Two","Three","Four","Five",
"Six","Seven","Eight","Nine","Ten",
"Eleven","Twelve","Thirteen","Fourteen","Fifteen",
"Sixteen","Seventeen","Eighteen","Nineteen","Twenty",
"Twenty-One","Twenty-Two","Twenty-Three","Twenty-Four",
"Twenty-Five","Twenty-Six","Twenty-Seven","Twenty-Eight",
"Twenty-Nine","Thirty","Thirty-One","Thirty-Two",
"Thirty-Three","Thirty-Four","Thirty-Five","Thirty-Six",
"Thirty-Seven","Thirty-Eight","Thirty-Nine"};
DTMStringPool pool=new DTMSafeStringPool();
System.out.println("If no complaints are printed below, we passed initial test.");
for(int pass=0;pass<=1;++pass)
{
int i;
for(i=0;i