01: /*
02: * $Id: JRMapCollectionDataSource.java,v 1.2 2003/09/14 05:36:47 jonesde Exp $
03: *
04: * Copyright (c) 2002-2003 The Open For Business Project - www.ofbiz.org
05: *
06: * Permission is hereby granted, free of charge, to any person obtaining a
07: * copy of this software and associated documentation files (the "Software"),
08: * to deal in the Software without restriction, including without limitation
09: * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10: * and/or sell copies of the Software, and to permit persons to whom the
11: * Software is furnished to do so, subject to the following conditions:
12: *
13: * The above copyright notice and this permission notice shall be included
14: * in all copies or substantial portions of the Software.
15: *
16: * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17: * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18: * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
19: * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
20: * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
21: * OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
22: * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23: */
24:
25: package org.ofbiz.content.report;
26:
27: import dori.jasper.engine.JRDataSource;
28: import dori.jasper.engine.JRException;
29: import dori.jasper.engine.JRField;
30:
31: import java.util.Collection;
32: import java.util.Iterator;
33: import java.util.Map;
34:
35: /**
36: * <code>JRMapCollectionDataSource</code>
37: *
38: * @author <a href="mailto:gielen@aixcept.de">Rene Gielen</a>
39: * @version $Revision: 1.2 $
40: */
41: public class JRMapCollectionDataSource implements JRDataSource {
42:
43: private Collection data = null;
44: private Iterator iterator = null;
45: private Map currentMap = null;
46:
47: public JRMapCollectionDataSource(Collection mapCollection) {
48: this .data = mapCollection;
49:
50: if (data != null) {
51: this .iterator = data.iterator();
52: }
53: }
54:
55: public boolean next() throws JRException {
56: boolean hasNext = false;
57:
58: if (this .iterator != null) {
59: hasNext = this .iterator.hasNext();
60:
61: if (hasNext) {
62: try {
63: this .currentMap = (Map) this .iterator.next();
64: } catch (Exception e) {
65: throw new JRException(
66: "Current collection object does not seem to be a Map.",
67: e);
68: }
69: }
70: }
71:
72: return hasNext;
73: }
74:
75: public Object getFieldValue(JRField jrField) throws JRException {
76: Object value = null;
77:
78: if (currentMap != null) {
79: value = currentMap.get(jrField.getName());
80: }
81:
82: return value;
83: }
84:
85: }
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