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1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package com.sun.xml.internal.xsom.impl; |
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27 |
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28 import com.sun.xml.internal.xsom.XSContentType; |
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29 import com.sun.xml.internal.xsom.XSParticle; |
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30 import com.sun.xml.internal.xsom.XSSimpleType; |
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31 import com.sun.xml.internal.xsom.visitor.XSContentTypeFunction; |
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32 import com.sun.xml.internal.xsom.visitor.XSContentTypeVisitor; |
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33 import com.sun.xml.internal.xsom.visitor.XSFunction; |
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34 import com.sun.xml.internal.xsom.visitor.XSVisitor; |
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35 |
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36 /** |
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37 * |
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38 * @author |
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39 * Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com) |
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40 */ |
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41 public class EmptyImpl extends ComponentImpl implements ContentTypeImpl { |
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42 public EmptyImpl() { super(null,null,null,null); } |
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43 |
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44 public XSSimpleType asSimpleType() { return null; } |
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45 public XSParticle asParticle() { return null; } |
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46 public XSContentType asEmpty() { return this; } |
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47 |
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48 public Object apply( XSContentTypeFunction function ) { |
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49 return function.empty(this); |
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50 } |
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51 public Object apply( XSFunction function ) { |
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52 return function.empty(this); |
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53 } |
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54 public void visit( XSVisitor visitor ) { |
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55 visitor.empty(this); |
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56 } |
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57 public void visit( XSContentTypeVisitor visitor ) { |
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58 visitor.empty(this); |
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59 } |
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60 |
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61 public XSContentType getContentType() { return this; } |
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62 } |