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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
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24   */
25  
26  package com.sun.xml.internal.xsom;
27  
28  import com.sun.xml.internal.xsom.visitor.XSContentTypeFunction;
29  import com.sun.xml.internal.xsom.visitor.XSContentTypeVisitor;
30  
31  /**
32   * Content of a complex type.
33   *
34   * @author
35   *  Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
36   */
37  public interface XSContentType extends XSComponent
38  {
39      /**
40       * Equivalent of <code>(this instanceof XSSimpleType)?this:null</code>
41       */
42      XSSimpleType asSimpleType();
43      /**
44       * Equivalent of <code>(this instanceof XSParticle)?this:null</code>
45       */
46      XSParticle asParticle();
47      /**
48       * If this content type represents the empty content, return <code>this</code>,
49       * otherwise null.
50       */
51      XSContentType asEmpty();
52  
53      <T> T apply( XSContentTypeFunction<T> function );
54      void visit( XSContentTypeVisitor visitor );
55  }