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Java > Open Source Codes > it > businesslogic > ireport > connection > JREmptyDatasourceConnection


1 /*
2  * Copyright (C) 2005 - 2006 JasperSoft Corporation. All rights reserved.
3  * http://www.jaspersoft.com.
4  *
5  * Unless you have purchased a commercial license agreement from JasperSoft,
6  * the following license terms apply:
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as published by
10  * the Free Software Foundation.
11  *
12  * This program is distributed WITHOUT ANY WARRANTY; and without the
13  * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
14  * See the GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, see http://www.gnu.org/licenses/gpl.txt
18  * or write to:
19  *
20  * Free Software Foundation, Inc.,
21  * 59 Temple Place - Suite 330,
22  * Boston, MA USA 02111-1307
23  *
24  *
25  *
26  *
27  * JREmptyDatasourceConnection.java
28  *
29  * Created on 4 giugno 2003, 18.15
30  *
31  */
32
33 package it.businesslogic.ireport.connection;
34 import it.businesslogic.ireport.*;
35 import it.businesslogic.ireport.util.*;
36 import java.net.URLClassLoader JavaDoc;
37 import java.sql.*;
38 import java.util.HashMap JavaDoc;
39 import java.util.List JavaDoc;
40 import javax.swing.*;
41
42 import javax.persistence.EntityManager;
43 import javax.persistence.EntityManagerFactory;
44 import javax.persistence.Persistence;
45 import net.sf.jasperreports.engine.JREmptyDataSource;
46
47 /**
48  *
49  * @author Administrator
50  */
51 public class JREmptyDatasourceConnection extends it.businesslogic.ireport.connection.NullConnection {
52     
53     private int records = 1;
54     
55     /** Creates a new instance of JDBCConnection */
56     public JREmptyDatasourceConnection() {
57         this.setName("Empty datasource connection");
58     }
59     
60     /** This method return an instanced connection to the database.
61      * If isJDBCConnection() return false => getConnection() return null
62      *
63      */
64     public java.sql.Connection JavaDoc getConnection() {
65             return null;
66     }
67     
68     public boolean isJDBCConnection() {
69         return false;
70     }
71     
72     public boolean isJRDataSource() {
73         return true;
74     }
75     
76    /*
77      * This method return all properties used by this connection
78      */
79     public java.util.HashMap JavaDoc getProperties()
80     {
81         java.util.HashMap JavaDoc map = new java.util.HashMap JavaDoc();
82         map.put("records", "" + this.getRecords() );
83         return map;
84     }
85     
86     public void loadProperties(java.util.HashMap JavaDoc map)
87     {
88         this.setRecords( Integer.parseInt( Misc.nvl( (String JavaDoc)map.get("records"),"1") ) );
89     }
90     
91     
92     public String JavaDoc getDescription(){ return "Empty datasource"; }
93     
94     
95     /**
96      * This method return an instanced JRDataDource to the database.
97      * If isJDBCConnection() return true => getJRDataSource() return false
98      */
99     public net.sf.jasperreports.engine.JRDataSource getJRDataSource()
100     {
101         return new JREmptyDataSource(getRecords());
102     }
103
104     public int getRecords() {
105         return records;
106     }
107
108     public void setRecords(int records) {
109         this.records = records;
110     }
111     
112 }
113
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