1 /*
2 * Copyright (c) 1997, 2012, 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.api.server;
27
28 import java.util.Collection;
29 import java.util.Collections;
30 import java.util.HashSet;
31 import java.util.Set;
32 import java.util.concurrent.CopyOnWriteArraySet;
33
34 import com.sun.istack.internal.NotNull;
35 import com.sun.xml.internal.ws.api.Component;
36 import com.sun.xml.internal.ws.api.ComponentEx;
37 import com.sun.xml.internal.ws.api.ComponentRegistry;
38
39 /**
40 * Root of the SPI implemented by the container
41 * (such as application server.)
42 *
43 * <p>
44 * Often technologies that are built on top of JAX-WS
45 * (such as Tango) needs to negotiate private contracts between
46 * them and the container. This interface allows such technologies
47 * to query the negotiated SPI by using the {@link #getSPI(Class)}.
48 *
49 * <p>
50 * For example, if a security pipe needs to get some information
74 */
75 public abstract class Container implements ComponentRegistry, ComponentEx {
76 private final Set<Component> components = new CopyOnWriteArraySet<Component>();
77
78 /**
79 * For derived classes.
80 */
81 protected Container() {
82 }
83
84 /**
85 * Constant that represents a "no {@link Container}",
86 * which always returns null from {@link #getSPI(Class)}.
87 */
88 public static final Container NONE = new NoneContainer();
89
90 private static final class NoneContainer extends Container {
91 }
92
93 public <S> S getSPI(Class<S> spiType) {
94 for (Component c : components) {
95 S s = c.getSPI(spiType);
96 if (s != null)
97 return s;
98 }
99 return null;
100 }
101
102 public Set<Component> getComponents() {
103 return components;
104 }
105
106 public @NotNull <E> Iterable<E> getIterableSPI(Class<E> spiType) {
107 E item = getSPI(spiType);
108 if (item != null) {
109 Collection<E> c = Collections.singletonList(item);
110 return c;
111 }
112 return Collections.emptySet();
113 }
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1 /*
2 * Copyright (c) 1997, 2013, 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.api.server;
27
28 import java.util.Collection;
29 import java.util.Collections;
30 import java.util.Set;
31 import java.util.concurrent.CopyOnWriteArraySet;
32
33 import com.sun.istack.internal.NotNull;
34 import com.sun.xml.internal.ws.api.Component;
35 import com.sun.xml.internal.ws.api.ComponentEx;
36 import com.sun.xml.internal.ws.api.ComponentRegistry;
37
38 /**
39 * Root of the SPI implemented by the container
40 * (such as application server.)
41 *
42 * <p>
43 * Often technologies that are built on top of JAX-WS
44 * (such as Tango) needs to negotiate private contracts between
45 * them and the container. This interface allows such technologies
46 * to query the negotiated SPI by using the {@link #getSPI(Class)}.
47 *
48 * <p>
49 * For example, if a security pipe needs to get some information
73 */
74 public abstract class Container implements ComponentRegistry, ComponentEx {
75 private final Set<Component> components = new CopyOnWriteArraySet<Component>();
76
77 /**
78 * For derived classes.
79 */
80 protected Container() {
81 }
82
83 /**
84 * Constant that represents a "no {@link Container}",
85 * which always returns null from {@link #getSPI(Class)}.
86 */
87 public static final Container NONE = new NoneContainer();
88
89 private static final class NoneContainer extends Container {
90 }
91
92 public <S> S getSPI(Class<S> spiType) {
93 if (components == null) return null;
94 for (Component c : components) {
95 S s = c.getSPI(spiType);
96 if (s != null)
97 return s;
98 }
99 return null;
100 }
101
102 public Set<Component> getComponents() {
103 return components;
104 }
105
106 public @NotNull <E> Iterable<E> getIterableSPI(Class<E> spiType) {
107 E item = getSPI(spiType);
108 if (item != null) {
109 Collection<E> c = Collections.singletonList(item);
110 return c;
111 }
112 return Collections.emptySet();
113 }
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