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Java > Open Source Codes > com > caucho > amber > query > LiteralExpr


1 /*
2  * Copyright (c) 1998-2004 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.amber.query;
30
31 import com.caucho.util.CharBuffer;
32
33 /**
34  * Literal expression for Amber.
35  */
36 class LiteralExpr extends AbstractAmberExpr {
37   // literal value
38 private String _value;
39
40   /**
41    * Creates a new literal expression.
42    *
43    * @param value the string value of the literal
44    * @param type the java type of the literal
45    */
46   LiteralExpr(String value, Class javaType)
47   {
48     _value = value;
49   }
50
51   /**
52    * Returns the literal value
53    */
54   String getValue()
55   {
56     return _value;
57   }
58
59   /**
60    * Binds the expression as a select item.
61    */
62   public AmberExpr bindSelect(QueryParser parser)
63   {
64     return this;
65   }
66
67   /**
68    * Generates the literal.
69    */
70   public void generateWhere(CharBuffer cb)
71   {
72     cb.append(_value);
73   }
74
75   public String toString()
76   {
77     return _value;
78   }
79 }
80
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