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.api.model.wsdl;
  27 
  28 /**
  29  * Interface that represents WSDL concepts that
  30  * can have extensions.
  31  *
  32  * @author Vivek Pandey
  33  * @author Kohsuke Kawaguchi
  34  */
  35 public interface WSDLExtensible extends WSDLObject {
  36     /**
  37      * Gets all the {@link WSDLExtension}s
  38      * added through {@link #addExtension(WSDLExtension)}.
  39      *
  40      * @return
  41      *      never null.
  42      */
  43     Iterable<WSDLExtension> getExtensions();
  44 
  45     /**
  46      * Gets all the extensions that is assignable to the given type.
  47      *
  48      * <p>
  49      * This allows clients to find specific extensions in a type-safe
  50      * and convenient way.
  51      *
  52      * @param type
  53      *      The type of the extension to obtain. Must not be null.
  54      *
  55      * @return
  56      *      Can be an empty fromjava.collection but never null.
  57      */
  58     <T extends WSDLExtension> Iterable<T> getExtensions(Class<T> type);
  59 
  60     /**
  61      * Gets the extension that is assignable to the given type.
  62      *
  63      * <p>
  64      * This is just a convenient version that does
  65      *
  66      * <pre>
  67      * Iterator itr = getExtensions(type);
  68      * if(itr.hasNext())  return itr.next();
  69      * else               return null;
  70      * </pre>
  71      *
  72      * @return
  73      *      null if the extension was not found.
  74      */
  75     <T extends WSDLExtension> T getExtension(Class<T> type);
  76 
  77     /**
  78      * Adds a new {@link WSDLExtension}
  79      * to this object.
  80      *
  81      * @param extension
  82      *      must not be null.
  83      */
  84     void addExtension(WSDLExtension extension);
  85 }