src/share/jaxws_classes/com/sun/xml/internal/ws/server/SingletonResolver.java

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1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.xml.internal.ws.server;
27
28 import com.sun.istack.internal.NotNull;
29 import com.sun.xml.internal.ws.api.message.Packet;
30 import com.sun.xml.internal.ws.api.server.AbstractInstanceResolver;
31 import com.sun.xml.internal.ws.api.server.InstanceResolver;
32 import com.sun.xml.internal.ws.api.server.WSEndpoint;
33 import com.sun.xml.internal.ws.api.server.WSWebServiceContext;
34
35 import javax.annotation.PostConstruct;
36 import javax.annotation.PreDestroy;
37
38 /**
39 * {@link InstanceResolver} that always returns a single instance.
40 *
41 * @author Kohsuke Kawaguchi
42 */
43 public final class SingletonResolver<T> extends AbstractInstanceResolver<T> {
44 private final @NotNull T singleton;
45
46 public SingletonResolver(@NotNull T singleton) {
47 this.singleton = singleton;
48 }
49
50 public @NotNull T resolve(Packet request) {
51 return singleton;
52 }
53
54 public void start(WSWebServiceContext wsc, WSEndpoint endpoint) {
55 getResourceInjector(endpoint).inject(wsc,singleton);
56 // notify that we are ready to serve
57 invokeMethod(findAnnotatedMethod(singleton.getClass(),PostConstruct.class),singleton);
58 }
59
60 public void dispose() {
61 invokeMethod(findAnnotatedMethod(singleton.getClass(),PreDestroy.class),singleton);
62 }
63 }

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