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Java > Open Source Codes > org > apache > ojb > jdo > jdoql > ThisExpression


1 package org.apache.ojb.jdo.jdoql;
2
3 /* Copyright 2003-2005 The Apache Software Foundation
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17
18 /**
19  * The 'this' expression.
20  *
21  * @author <a HREF="mailto:tomdz@apache.org">Thomas Dudziak</a>
22  */
23 public class ThisExpression extends Expression
24 {
25     /** The resolved type (which is the type search type of the query) */
26     private Class JavaDoc _type;
27
28     /**
29      * Creates a new this expression object.
30      */
31     public ThisExpression()
32     {
33     }
34
35     /* (non-Javadoc)
36      * @see org.apache.ojb.jdo.jdoql.Acceptor#accept(org.apache.ojb.jdo.jdoql.Visitor)
37      */
38     public void accept(Visitor visitor)
39     {
40         visitor.visit(this);
41     }
42
43     /* (non-Javadoc)
44      * @see java.lang.Object#toString()
45      */
46     public String JavaDoc toString()
47     {
48         return "this";
49     }
50
51     /**
52      * Sets the type of this expression.
53      *
54      * @param type The type
55      */
56     public void setType(Class JavaDoc type)
57     {
58         _type = type;
59     }
60
61     /* (non-Javadoc)
62      * @see org.apache.ojb.jdo.jdoql.Expression#getType()
63      */
64     public Class JavaDoc getType()
65     {
66         return _type;
67     }
68 }
69
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