001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/framework/xml/schema/TypeReference.java $
002 /*----------------------------------------------------------------------------
003 This file is part of deegree, http://deegree.org/
004 Copyright (C) 2001-2009 by:
005 Department of Geography, University of Bonn
006 and
007 lat/lon GmbH
008
009 This library is free software; you can redistribute it and/or modify it under
010 the terms of the GNU Lesser General Public License as published by the Free
011 Software Foundation; either version 2.1 of the License, or (at your option)
012 any later version.
013 This library is distributed in the hope that it will be useful, but WITHOUT
014 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016 details.
017 You should have received a copy of the GNU Lesser General Public License
018 along with this library; if not, write to the Free Software Foundation, Inc.,
019 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020
021 Contact information:
022
023 lat/lon GmbH
024 Aennchenstr. 19, 53177 Bonn
025 Germany
026 http://lat-lon.de/
027
028 Department of Geography, University of Bonn
029 Prof. Dr. Klaus Greve
030 Postfach 1147, 53001 Bonn
031 Germany
032 http://www.geographie.uni-bonn.de/deegree/
033
034 e-mail: info@deegree.org
035 ----------------------------------------------------------------------------*/
036 package org.deegree.framework.xml.schema;
037
038 import org.deegree.datatypes.QualifiedName;
039
040 /**
041 * Represents a type reference. The reference may be resolved or not. If it is resolved, the
042 * referenced <code>TypeDeclaration</code> is accessible, otherwise only the name of the type is
043 * available.
044 *
045 * @author <a href="mailto:schneider@lat-lon.de">Markus Schneider </a>
046 * @author last edited by: $Author: mschneider $
047 *
048 * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
049 */
050 public class TypeReference {
051
052 private QualifiedName typeName;
053
054 private TypeDeclaration declaration;
055
056 private boolean isResolved;
057
058 /**
059 * Creates an unresolved <code>TypeReference</code>.
060 *
061 * @param typeName
062 */
063 public TypeReference( QualifiedName typeName ) {
064 this.typeName = typeName;
065 }
066
067 /**
068 * Creates an anonymous (inline) <code>TypeReference</code>.
069 *
070 * @param declaration
071 */
072 public TypeReference( TypeDeclaration declaration ) {
073 this.declaration = declaration;
074 }
075
076 /**
077 * @return Name
078 */
079 public QualifiedName getName() {
080 return this.typeName;
081 }
082
083 /**
084 * @return true if is resolved
085 */
086 public boolean isResolved () {
087 return this.isResolved;
088 }
089
090 /**
091 * @return declaration
092 */
093 public TypeDeclaration getTypeDeclaration() {
094 return this.declaration;
095 }
096
097 /**
098 * Returns whether this <code>TypeReference</code> is anynoums (unnamed) or not.
099 *
100 * @return true, if this reference is anonymous, false otherwise
101 */
102 public boolean isAnonymous() {
103 return this.typeName == null;
104 }
105
106 /**
107 * @param declaration
108 */
109 public void resolve( TypeDeclaration declaration ) {
110 if ( isResolved() ) {
111 throw new RuntimeException( "TypeReference to type '"
112 + typeName + "' has already been resolved." );
113 }
114 this.declaration = declaration;
115 this.isResolved = true;
116 }
117
118 /**
119 *
120 */
121 public void resolve() {
122 if ( isResolved() ) {
123 throw new RuntimeException( "TypeReference to type '"
124 + typeName + "' has already been resolved." );
125 }
126 this.isResolved = true;
127 }
128 }