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Java > Open Source Codes > net > sf > jasperreports > engine > base > JRBaseParameter


1 /*
2  * ============================================================================
3  * GNU Lesser General Public License
4  * ============================================================================
5  *
6  * JasperReports - Free Java report-generating library.
7  * Copyright (C) 2001-2006 JasperSoft Corporation http://www.jaspersoft.com
8  *
9  * This library is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * This library 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. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
22  *
23  * JasperSoft Corporation
24  * 303 Second Street, Suite 450 North
25  * San Francisco, CA 94107
26  * http://www.jaspersoft.com
27  */
28 package net.sf.jasperreports.engine.base;
29
30 import java.io.Serializable JavaDoc;
31
32 import net.sf.jasperreports.engine.JRConstants;
33 import net.sf.jasperreports.engine.JRExpression;
34 import net.sf.jasperreports.engine.JRParameter;
35 import net.sf.jasperreports.engine.JRRuntimeException;
36 import net.sf.jasperreports.engine.util.JRClassLoader;
37
38
39 /**
40  * @author Teodor Danciu (teodord@users.sourceforge.net)
41  * @version $Id: JRBaseParameter.java 1229 2006-04-19 13:27:35 +0300 (Wed, 19 Apr 2006) teodord $
42  */
43 public class JRBaseParameter implements JRParameter, Serializable JavaDoc
44 {
45
46
47     /**
48      *
49      */
50     private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
51
52     /**
53      *
54      */
55     protected String JavaDoc name = null;
56     protected String JavaDoc description = null;
57     protected String JavaDoc valueClassName = java.lang.String JavaDoc.class.getName();
58     protected boolean isSystemDefined = false;
59     protected boolean isForPrompting = true;
60
61     protected transient Class JavaDoc valueClass = null;
62
63     /**
64      *
65      */
66     protected JRExpression defaultValueExpression = null;
67
68
69     /**
70      *
71      */
72     protected JRBaseParameter()
73     {
74     }
75     
76     
77     /**
78      *
79      */
80     protected JRBaseParameter(JRParameter parameter, JRBaseObjectFactory factory)
81     {
82         factory.put(parameter, this);
83         
84         name = parameter.getName();
85         description = parameter.getDescription();
86         valueClassName = parameter.getValueClassName();
87         isSystemDefined = parameter.isSystemDefined();
88         isForPrompting = parameter.isForPrompting();
89
90         defaultValueExpression = factory.getExpression(parameter.getDefaultValueExpression());
91     }
92         
93
94     /**
95      *
96      */
97     public String JavaDoc getName()
98     {
99         return this.name;
100     }
101         
102     /**
103      *
104      */
105     public String JavaDoc getDescription()
106     {
107         return this.description;
108     }
109         
110     /**
111      *
112      */
113     public void setDescription(String JavaDoc description)
114     {
115         this.description = description;
116     }
117     
118     /**
119      *
120      */
121     public Class JavaDoc getValueClass()
122     {
123         if (valueClass == null)
124         {
125             if (valueClassName != null)
126             {
127                 try
128                 {
129                     valueClass = JRClassLoader.loadClassForName(valueClassName);
130                 }
131                 catch(ClassNotFoundException JavaDoc e)
132                 {
133                     throw new JRRuntimeException(e);
134                 }
135             }
136         }
137         
138         return valueClass;
139     }
140
141     /**
142      *
143      */
144     public String JavaDoc getValueClassName()
145     {
146         return valueClassName;
147     }
148
149     /**
150      *
151      */
152     public boolean isSystemDefined()
153     {
154         return this.isSystemDefined;
155     }
156
157     /**
158      *
159      */
160     public boolean isForPrompting()
161     {
162         return this.isForPrompting;
163     }
164
165     /**
166      *
167      */
168     public JRExpression getDefaultValueExpression()
169     {
170         return this.defaultValueExpression;
171     }
172
173
174 }
175
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