- /*
- * Copyright 1999-2004 The Apache Software Foundation.
- *
- * Licensed 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,v 1.6 2004/02/16 23:06:11 minchau Exp $
- */
-
- package com.sun.org.apache.xml.internal.dtm.ref;
-
-
- /** <p>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.</p>
- *
- * <p>Status: Passed basic test in _main().</p>
- * */
- 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<word.length;++i)
- {
- int j=pool.stringToIndex(word[i]);
- if(j!=i)
- System.out.println("\tMismatch populating pool: assigned "+
- j+" for create "+i);
- }
-
- for(i=0;i<word.length;++i)
- {
- int j=pool.stringToIndex(word[i]);
- if(j!=i)
- System.out.println("\tMismatch in stringToIndex: returned "+
- j+" for lookup "+i);
- }
-
- for(i=0;i<word.length;++i)
- {
- String w=pool.indexToString(i);
- if(!word[i].equals(w))
- System.out.println("\tMismatch in indexToString: returned"+
- w+" for lookup "+i);
- }
-
- pool.removeAllElements();
-
- System.out.println("\nPass "+pass+" complete\n");
- } // end pass loop
- }
- } // DTMSafeStringPool