File D:\maven-qcr-plugin-testsunitaires\qcr4java\jenkins-master\target\site\qc\core\src\main\java\hudson\util\HeapSpaceStringConverter.java.html

1 /*
2 * The MIT License
3 *
4 * Copyright (c) 2004-2009, Sun Microsystems, Inc., Kohsuke Kawaguchi
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 package hudson.util;
25
26 import com.thoughtworks.xstream.converters.basic.AbstractSingleValueConverter;
27 import com.thoughtworks.xstream.converters.basic.StringConverter;
28
29 /**
30 * Up to XStream 1.3 the default {@link StringConverter} in XStream
31 * used {@link String#intern()}, which stressed the
32 * (rather limited) PermGen space with a large XML file.
33 *
34 * Since XStream 1.3 it use a WeakHashMap cache to always use the same String instances, but
35 * this has also major problems with a single long living XStream instance (as we have in Jenkins)
36 * See http://jira.codehaus.org/browse/XSTR-604
37 *
38 * <p>
39 * Use this to avoid that (instead those strings will
40 * now be allocated to the heap space.)
41 *
42 * @author Kohsuke Kawaguchi
43 */
44 public class HeapSpaceStringConverter extends AbstractSingleValueConverter {
45
46 public boolean canConvert(Class type) {
47 return type.equals(String.class);
48 }
49
50 public Object fromString(String str) {
51 return str;
52 }
53 }
54