Source code: jbreport/core/TableColumn.java
1 /*
2 * $Id: TableColumn.java,v 1.1 2000/08/31 13:53:17 grantfin Exp $
3 *
4 * jbReport - A reporting library for Java
5 * Copyright (C) 2000 Grant Finnemore <grantfin@users.sourceforge.net>
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21 package jbreport.core;
22
23 import org.xml.sax.Attributes;
24
25 import jbreport.ReportElement;
26 import jbreport.ReportException;
27
28 /**
29 * This is used to contain the information about the column headers in a table.
30 *
31 * @author Grant Finnemore
32 * @version $Revision: 1.1 $
33 */
34 class TableColumn extends ReportCompositeImpl {
35
36 /** The name of the column that this instance represents */
37 private String id;
38
39 //
40 // Constructors
41 //
42
43 public TableColumn() {
44 elementType = "column";
45 }
46
47 //
48 // Methods overloaded from AbstractReportElement
49 //
50
51 public void accept(ReportVisitor visitor, ReportVisitorState state)
52 throws ReportException {
53 visitor.visitTableHeaderItem(this, state);
54 }
55
56 public String getString(String property, String defaultValue)
57 throws ReportException {
58
59 String result = defaultValue;
60 if("id".equals(property)) {
61 result = id;
62 }
63 else {
64 result = super.getString(property, defaultValue);
65 }
66 return result;
67 }
68
69 public void setString(String property, String value)
70 throws ReportException {
71
72 assertNotNull(value, "value");
73 if("id".equals(property)) {
74 id = value;
75 }
76 else {
77 super.setString(property, value);
78 }
79 }
80
81 public void xmlInitialize(String localName, Attributes attributes)
82 throws ReportException {
83
84 super.xmlInitialize(localName, attributes);
85 id = attributes.getValue("id");
86 assertNotNull(id, id);
87 }
88
89 public void xmlEndChild(ReportElement elem) throws ReportException {
90 if("aggregate".equals(elem.getType())) {
91 // I'm not sure that we should extend the ReportCompositeImpl class
92 // to just provide for the aggregates, but it is the easiest for the
93 // moment.
94 addElement(elem);
95 }
96 else {
97 super.xmlEndChild(elem);
98 }
99 }
100 }