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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.client.sei;
27  
28  import java.lang.reflect.Method;
29  
30  import javax.xml.namespace.QName;
31  import javax.xml.ws.WebServiceException;
32  
33  import com.sun.xml.internal.ws.api.databinding.ClientCallBridge;
34  
35  /**
36   * Handles an invocation of a method.
37   *
38   * <p>
39   * Each instance of {@link MethodHandler} has an implicit knowledge of
40   * a particular method that it handles.
41   *
42   * @author Kohsuke Kawaguchi
43   */
44  public abstract class MethodHandler {
45  
46      protected final SEIStub owner;
47      protected Method method;
48  
49      protected MethodHandler(SEIStub owner, Method m) {
50          this.owner = owner;
51          method = m;
52      }
53  
54      /**
55       * Performs the method invocation.
56       *
57       * @param proxy
58       *      The proxy object exposed to the user. Must not be null.
59       * @param args
60       *      The method invocation arguments. To handle asynchroonus method invocations
61       *      without array reallocation, this aray is allowed to be longer than the
62       *      actual number of arguments to the method. Additional array space should be
63       *      simply ignored.
64       * @return
65       *      a return value from the method invocation. may be null.
66       *
67       * @throws WebServiceException
68       *      If used on the client side, a {@link WebServiceException} signals an error
69       *      during the service invocation.
70       * @throws Throwable
71       *      some faults are reported in terms of checked exceptions.
72       */
73      abstract Object invoke(Object proxy, Object[] args) throws WebServiceException, Throwable;
74  }