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Java > Open Source Codes > com > tonbeller > jpivot > table > RowAxisBuilderImpl


1 /*
2  * ====================================================================
3  * This software is subject to the terms of the Common Public License
4  * Agreement, available at the following URL:
5  * http://www.opensource.org/licenses/cpl.html .
6  * Copyright (C) 2003-2004 TONBELLER AG.
7  * All Rights Reserved.
8  * You must accept the terms of that agreement to use this software.
9  * ====================================================================
10  *
11  *
12  */
13 package com.tonbeller.jpivot.table;
14
15 import org.apache.log4j.Logger;
16 import org.w3c.dom.Element JavaDoc;
17
18 import com.tonbeller.jpivot.olap.model.Axis;
19 import com.tonbeller.jpivot.table.span.HierarchyHeaderFactory;
20 import com.tonbeller.jpivot.table.span.IgnorePropertiesHierarchyHeaderFactory;
21 import com.tonbeller.jpivot.table.span.LevelHeaderFactory;
22 import com.tonbeller.jpivot.table.span.Span;
23 import com.tonbeller.jpivot.table.span.SpanCalc;
24
25 /**
26  * common functionality for row axis builders
27  * @author av
28  */
29 public class RowAxisBuilderImpl extends AxisBuilderSupport implements RowAxisBuilder, RowAxisConfig {
30   int positionHeader;
31   SpanCalc headerSpans;
32   private static final Logger logger = Logger.getLogger(RowAxisBuilderImpl.class);
33
34   public RowAxisBuilderImpl() {
35     super(new SpanBuilderImpl("row-heading", "heading-heading"));
36     setMemberIndent(true);
37     setShowParentMembers(false);
38     setHierarchyHeader(NO_HEADER);
39     setMemberSpan(HIERARCHY_THEN_POSITION_SPAN);
40     setHeaderSpan(HIERARCHY_THEN_POSITION_SPAN);
41     setPositionHeader(HIERARCHY_HEADER);
42   }
43
44   public void buildRow(Element JavaDoc parent, int rowIndex) {
45     boolean even = (rowIndex % 2 == 0);
46     for (int i = 0; i < spanCalc.getHierarchyCount(); i++) {
47       Span span = spanCalc.getSpan(rowIndex, i);
48       if (span.isSignificant()) {
49         int rowspan = span.getPositionSpan();
50         int colspan = span.getHierarchySpan();
51         buildHeading(parent, span, rowspan, colspan, even);
52       }
53     }
54   }
55
56   /**
57    * @see com.tonbeller.jpivot.ui.table.AxisBuilder#getColumnCount()
58    */
59   public int getColumnCount() {
60     return spanCalc.getHierarchyCount();
61   }
62
63   /**
64    * @see com.tonbeller.jpivot.ui.table.AxisBuilder#getRowCount()
65    */
66   public int getRowCount() {
67     return spanCalc.getPositionCount();
68   }
69
70   /**
71    * Returns the positionHeader.
72    * @return int
73    */
74   public int getPositionHeader() {
75     return positionHeader;
76   }
77
78   /**
79    * Sets the positionHeader.
80    * @param positionHeader The positionHeader to set
81    */
82   public void setPositionHeader(int positionHeader) {
83     this.positionHeader = positionHeader;
84     setDirty(true);
85   }
86
87   public void buildHeaderRow(Element JavaDoc parent, int rowIndex) {
88     boolean even = (rowIndex % 2 == 0);
89     for (int i = 0; i < headerSpans.getHierarchyCount(); i++) {
90       Span span = headerSpans.getSpan(rowIndex, i);
91       if (logger.isInfoEnabled())
92         logger.info("building header row: " + span);
93       if (span.isSignificant()) {
94         int rowspan = span.getPositionSpan();
95         int colspan = span.getHierarchySpan();
96         buildHeading(parent, span, rowspan, colspan, even);
97       }
98     }
99   }
100
101   public int getHeaderRowCount() {
102     if (headerSpans == null)
103       return 0;
104     return headerSpans.getPositionCount();
105   }
106
107   public SpanCalc getHeaderSpanCalc() {
108     return headerSpans;
109   }
110
111   /**
112    * called from startBuild
113    */
114   public void initialize(Axis axis) {
115     super.initialize(axis);
116
117     switch (positionHeader) {
118     case HIERARCHY_LEVEL_HEADER:
119       logger.info("HIERARCHY_LEVEL_HEADER");
120       SpanCalc sc1 = spanCalc.createPositionHeader(new IgnorePropertiesHierarchyHeaderFactory());
121       SpanCalc sc2 = spanCalc.createPositionHeader(new LevelHeaderFactory());
122       headerSpans = SpanCalc.appendBelow(sc1, sc2);
123       break;
124     case LEVEL_HEADER:
125       logger.info("LEVEL_HEADER");
126       headerSpans = spanCalc.createPositionHeader(new LevelHeaderFactory());
127       break;
128     case HIERARCHY_HEADER:
129       logger.info("HIERARCHY_HEADER");
130       headerSpans = spanCalc.createPositionHeader(new HierarchyHeaderFactory());
131       break;
132     default:
133       headerSpans = null;
134       break;
135     }
136     if (headerSpans != null)
137       headerSpans.setConfig(spanCalc.getConfig());
138   }
139
140   public void stopBuild() {
141     super.stopBuild();
142     // avoid memory leak
143 headerSpans = null;
144   }
145
146   protected Axis getAxis() {
147     return table.getRowAxis();
148   }
149
150 }
151
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