Mercurial > hg > openjdk > jdk9 > jaxp
view src/java.xml/share/classes/com/sun/org/apache/xerces/internal/jaxp/validation/WeakReferenceXMLSchema.java @ 1113:2fdbfbde3bc0
8162572: Update License Header for all JAXP sources
Reviewed-by: lancea
author | joehw |
---|---|
date | Mon, 17 Apr 2017 16:24:10 -0700 |
parents | 2bfaf29cc90b |
children |
line wrap: on
line source
/* * reserved comment block * DO NOT REMOVE OR ALTER! */ /* * 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. */ package com.sun.org.apache.xerces.internal.jaxp.validation; import java.lang.ref.WeakReference; import com.sun.org.apache.xerces.internal.xni.grammars.XMLGrammarPool; /** * <p>An implementation of Schema for W3C XML Schemas * that keeps a weak reference to its grammar pool. If * no validators currently have a reference to the * grammar pool, the garbage collector is free to reclaim * its memory.</p> * * @author Michael Glavassevich, IBM */ final class WeakReferenceXMLSchema extends AbstractXMLSchema { /** Weak reference to grammar pool. */ private WeakReference fGrammarPool = new WeakReference(null); public WeakReferenceXMLSchema() {} /* * XSGrammarPoolContainer methods */ public synchronized XMLGrammarPool getGrammarPool() { XMLGrammarPool grammarPool = (XMLGrammarPool) fGrammarPool.get(); // If there's no grammar pool then either we haven't created one // yet or the garbage collector has already cleaned out the previous one. if (grammarPool == null) { grammarPool = new SoftReferenceGrammarPool(); fGrammarPool = new WeakReference(grammarPool); } return grammarPool; } public boolean isFullyComposed() { return false; } } // WeakReferenceXMLSchema