1 /*
   2  * Copyright (c) 2005, 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.rngom.digested;
  27 
  28 /**
  29  * @author Kohsuke Kawaguchi (kk@kohsuke.org)
  30  */
  31 public class DDefine {
  32     private final String name;
  33 
  34     private DPattern pattern;
  35     private Boolean nullable;
  36     DAnnotation annotation;
  37 
  38     public DDefine(String name) {
  39         this.name = name;
  40     }
  41 
  42     public DPattern getPattern() {
  43         return pattern;
  44     }
  45 
  46     public DAnnotation getAnnotation() {
  47         if(annotation==null)
  48             return DAnnotation.EMPTY;
  49         return annotation;
  50     }
  51 
  52     public void setPattern(DPattern pattern) {
  53         this.pattern = pattern;
  54         this.nullable = null;
  55     }
  56 
  57     /**
  58      * Gets the name of the pattern block.
  59      */
  60     public String getName() {
  61         return name;
  62     }
  63 
  64     public boolean isNullable() {
  65         if(nullable==null)
  66             nullable = pattern.isNullable()?Boolean.TRUE:Boolean.FALSE;
  67         return nullable.booleanValue();
  68     }
  69 }