KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > net > sf > jasperreports > engine > data > JRMapArrayDataSource


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.data;
29
30 import java.util.Map JavaDoc;
31
32 import net.sf.jasperreports.engine.JRField;
33 import net.sf.jasperreports.engine.JRRewindableDataSource;
34
35
36 /**
37  * @author Teodor Danciu (teodord@users.sourceforge.net)
38  * @version $Id: JRMapArrayDataSource.java 1229 2006-04-19 13:27:35 +0300 (Wed, 19 Apr 2006) teodord $
39  */
40 public class JRMapArrayDataSource implements JRRewindableDataSource
41 {
42     
43
44     /**
45      *
46      */
47     private Object JavaDoc[] records = null;
48     private int index = -1;
49     
50
51     /**
52      *
53      */
54     public JRMapArrayDataSource(Object JavaDoc[] array)
55     {
56         records = array;
57     }
58     
59
60     /**
61      *
62      */
63     public boolean next()
64     {
65         index++;
66
67         if (records != null)
68         {
69             return (index < records.length);
70         }
71
72         return false;
73     }
74     
75     
76     /**
77      *
78      */
79     public Object JavaDoc getFieldValue(JRField field)
80     {
81         Object JavaDoc value = null;
82         
83         Map JavaDoc currentRecord = (Map JavaDoc)records[index];
84
85         if (currentRecord != null)
86         {
87             value = currentRecord.get(field.getName());
88         }
89
90         return value;
91     }
92
93     
94     /**
95      *
96      */
97     public void moveFirst()
98     {
99         this.index = -1;
100     }
101
102
103 }
104
Popular Tags