1 /**
2 * Redistribution and use of this software and associated documentation ("Software"), with or
3 * without modification, are permitted provided that the following conditions are met:
4 *
5 * 1. Redistributions of source code must retain copyright statements and notices. Redistributions
6 * must also contain a copy of this document.
7 *
8 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
9 * conditions and the following disclaimer in the documentation and/or other materials provided with
10 * the distribution.
11 *
12 * 3. The name "Exolab" must not be used to endorse or promote products derived from this Software
13 * without prior written permission of Intalio, Inc. For written permission, please contact
14 * info@exolab.org.
15 *
16 * 4. Products derived from this Software may not be called "Exolab" nor may "Exolab" appear in
17 * their names without prior written permission of Intalio, Inc. Exolab is a registered trademark of
18 * Intalio, Inc.
19 *
20 * 5. Due credit should be given to the Exolab Project (http://www.exolab.org/).
21 *
22 * THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESSED OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
24 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTALIO, INC. OR ITS
25 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
29 * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * Copyright 1999-2001 (C) Intalio Inc. All Rights Reserved.
32 *
33 * $Id$
34 */
35
36 package org.exolab.castor.xml.schema;
37
38
39 /**
40 * Package private class to handles simple-type references.
41 *
42 * @author <a href="mailto:berry@intalio.com">Arnaud Berry</a>
43 * @author <a href="mailto:kvisco@intalio.com">Keith Visco</a>
44 * @version $Revision$ $Date: 2005-12-13 14:58:48 -0700 (Tue, 13 Dec 2005) $
45 **/
46 class SimpleTypeReference extends SimpleType {
47 /** SerialVersionUID */
48 private static final long serialVersionUID = 1020507618887404978L;
49
50 /**
51 * The referred type (stored in the schema)
52 */
53 private SimpleType referredType = null;
54
55 /**
56 * Creates a new SimpleTypeReference.
57 *
58 * @param name the name of the simple type being referenced, must not be null.
59 * @param schema the parent Schema of the simple type being referenced, must not be null.
60 **/
61 SimpleTypeReference(Schema schema, String name) {
62 if (schema == null) {
63 String err = "The schema argument to the constructor of "
64 + "SimpleTypeReference is not allowed to be null.";
65 throw new IllegalArgumentException(err);
66 }
67 if (name == null) {
68 String err = "The name argument to the constructor of "
69 + "SimpleTypeReference is not allowed to be null.";
70 throw new IllegalArgumentException(err);
71 }
72 super.setName(name);
73 super.setSchema(schema);
74 } // -- SimpleTypeReference
75
76 /**
77 * Returns the referred type
78 */
79 XMLType getType() {
80 if (referredType == null)
81 resolveTypeReference();
82
83 return referredType;
84 }
85
86 /**
87 * Resolves the type reference.
88 */
89 void resolveTypeReference() {
90 referredType = getSchema().getSimpleType(getName());
91 }
92
93 /**
94 * Returns Structure.UNKNOWN (This class should not be seen outside AttributeDecl (and ElementDecl
95 * ?) anyway)
96 **/
97 public short getStructureType() {
98 return Structure.UNKNOWN;
99 } // -- getStructureType
100
101 /**
102 * Sets the Schema for this Union. This method overloads the SimpleType#setSchema method to
103 * prevent the Schema from being changed.
104 *
105 * @param name the schema that this Union belongs to.
106 **/
107 public void setName(String name) {
108 if (name != getName()) {
109 String err = "The name of a SimpleTypeReference cannot be changed.";
110 throw new IllegalStateException(err);
111 }
112 } // -- void setName
113
114 /**
115 * Sets the Schema for this SimpleTypeReference. This method overloads the SimpleType#setSchema
116 * method to prevent the Schema from being changed.
117 *
118 * @param schema the schema that this SimpleType that is being referenced belongs to.
119 **/
120 public void setSchema(Schema schema) {
121 if (schema != getSchema()) {
122 String err = "The Schema of a SimpleTypeReference cannot be changed.";
123 throw new IllegalStateException(err);
124 }
125 } // -- void setSchema
126
127 }
128
129