1 /*
2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
3 * @LastModified: Oct 2017
4 */
5 /*
6 * Licensed to the Apache Software Foundation (ASF) under one or more
7 * contributor license agreements. See the NOTICE file distributed with
8 * this work for additional information regarding copyright ownership.
9 * The ASF licenses this file to You under the Apache License, Version 2.0
10 * (the "License"); you may not use this file except in compliance with
11 * the License. You may obtain a copy of the License at
12 *
13 * http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 */
21
22 package com.sun.org.apache.xerces.internal.jaxp.validation;
23
24 import java.lang.ref.WeakReference;
25
26 import com.sun.org.apache.xerces.internal.xni.grammars.XMLGrammarPool;
27
28 /**
29 * <p>An implementation of Schema for W3C XML Schemas
30 * that keeps a weak reference to its grammar pool. If
31 * no validators currently have a reference to the
32 * grammar pool, the garbage collector is free to reclaim
33 * its memory.</p>
34 *
35 * @author Michael Glavassevich, IBM
36 */
37 final class WeakReferenceXMLSchema extends AbstractXMLSchema {
38
39 /** Weak reference to grammar pool. */
40 private WeakReference<XMLGrammarPool> fGrammarPool = new WeakReference<>(null);
41
42 public WeakReferenceXMLSchema() {}
43
44 /*
45 * XSGrammarPoolContainer methods
46 */
47
48 public synchronized XMLGrammarPool getGrammarPool() {
49 XMLGrammarPool grammarPool = fGrammarPool.get();
50 // If there's no grammar pool then either we haven't created one
51 // yet or the garbage collector has already cleaned out the previous one.
52 if (grammarPool == null) {
53 grammarPool = new SoftReferenceGrammarPool();
54 fGrammarPool = new WeakReference<>(grammarPool);
55 }
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1 /*
2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
3 */
4 /*
5 * Licensed to the Apache Software Foundation (ASF) under one or more
6 * contributor license agreements. See the NOTICE file distributed with
7 * this work for additional information regarding copyright ownership.
8 * The ASF licenses this file to You under the Apache License, Version 2.0
9 * (the "License"); you may not use this file except in compliance with
10 * the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
20
21 package com.sun.org.apache.xerces.internal.jaxp.validation;
22
23 import java.lang.ref.WeakReference;
24
25 import com.sun.org.apache.xerces.internal.xni.grammars.XMLGrammarPool;
26
27 /**
28 * <p>An implementation of Schema for W3C XML Schemas
29 * that keeps a weak reference to its grammar pool. If
30 * no validators currently have a reference to the
31 * grammar pool, the garbage collector is free to reclaim
32 * its memory.</p>
33 *
34 * @author Michael Glavassevich, IBM
35 * @LastModified: Oct 2017
36 */
37 final class WeakReferenceXMLSchema extends AbstractXMLSchema {
38
39 /** Weak reference to grammar pool. */
40 private WeakReference<XMLGrammarPool> fGrammarPool = new WeakReference<>(null);
41
42 public WeakReferenceXMLSchema() {}
43
44 /*
45 * XSGrammarPoolContainer methods
46 */
47
48 public synchronized XMLGrammarPool getGrammarPool() {
49 XMLGrammarPool grammarPool = fGrammarPool.get();
50 // If there's no grammar pool then either we haven't created one
51 // yet or the garbage collector has already cleaned out the previous one.
52 if (grammarPool == null) {
53 grammarPool = new SoftReferenceGrammarPool();
54 fGrammarPool = new WeakReference<>(grammarPool);
55 }
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