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Java > Open Source Codes > net > mlw > vlh > web > tag > InvertedRowTag


1 /**
2  * Copyright (c) 2003 held jointly by the individual authors.
3  *
4  * This library is free software; you can redistribute it and/or modify it
5  * under the terms of the GNU Lesser General Public License as published
6  * by the Free Software Foundation; either version 2.1 of the License, or
7  * (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful, but
10  * WITHOUT ANY WARRANTY; with out even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public License
15  * along with this library; if not, write to the Free Software Foundation,
16  * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
17  *
18  * > http://www.gnu.org/copyleft/lesser.html
19  * > http://www.opensource.org/licenses/lgpl-license.php
20  */
21 package net.mlw.vlh.web.tag;
22
23 import java.util.ArrayList JavaDoc;
24 import java.util.HashMap JavaDoc;
25 import java.util.Iterator JavaDoc;
26 import java.util.LinkedHashMap JavaDoc;
27 import java.util.Map JavaDoc;
28
29 import javax.servlet.jsp.JspException JavaDoc;
30
31 import net.mlw.vlh.DefaultListBackedValueList;
32 import net.mlw.vlh.ValueList;
33 import net.mlw.vlh.web.tag.support.ColumnInfo;
34 import net.mlw.vlh.web.tag.support.DisplayProvider;
35 import net.mlw.vlh.web.util.JspUtils;
36
37 import org.apache.commons.beanutils.PropertyUtils;
38 import org.apache.commons.logging.Log;
39 import org.apache.commons.logging.LogFactory;
40
41 /**
42  * AAA add locale for format
43  * @author Matthew L. Wilson, Andrej Zachar
44  * @version $Revision: 1.12 $ $Date: 2005/11/23 14:55:49 $
45  */
46 public class InvertedRowTag extends DefaultRowTag
47 {
48
49    private static final long serialVersionUID = 8608872950341954907L;
50
51    private static final Log LOGGER = LogFactory.getLog(InvertedRowTag.class);
52
53    private static final String JavaDoc DEFAULT_FORMAT = "0.00";
54
55    private Map JavaDoc yAxisMap = new LinkedHashMap JavaDoc();
56
57    private Map JavaDoc xAxisMap = new LinkedHashMap JavaDoc();
58
59    private String JavaDoc title;
60
61    private String JavaDoc format = DEFAULT_FORMAT;
62
63    public void convertValueList() throws JspException JavaDoc
64    {
65       ValueList vl = getRootTag().getValueList();
66
67       try
68       {
69
70          while (vl.hasNext())
71          {
72             Object JavaDoc bean = vl.next();
73             Object JavaDoc xAxis = PropertyUtils.getProperty(bean, "ixaxis");
74             Object JavaDoc yAxis = PropertyUtils.getProperty(bean, "iyaxis");
75             Object JavaDoc value = PropertyUtils.getProperty(bean, "ivalue");
76
77             xAxisMap.put(xAxis, null);
78
79             Map JavaDoc map = (Map JavaDoc) yAxisMap.get(yAxis);
80             if (map == null)
81             {
82                yAxisMap.put(yAxis, map = new HashMap JavaDoc());
83                map.put("yaxis", yAxis);
84             }
85             map.put(JspUtils.format(xAxis, null, null).toLowerCase().replace(' ', '_'), value);
86          }
87       }
88       catch (Exception JavaDoc e)
89       {
90          LOGGER.error("InvertedRowTag.convertValueList() exception...", e);
91       }
92
93       //Add all the columns to the tag context.
94 for (Iterator JavaDoc iter = xAxisMap.keySet().iterator(); iter.hasNext();)
95       {
96          String JavaDoc label = JspUtils.format(iter.next(), null, null);
97          addColumnInfo(new ColumnInfo(label, label.toLowerCase().replace(' ', '_'), null, null));
98       }
99
100       getRootTag().setValueList(new DefaultListBackedValueList(new ArrayList JavaDoc(yAxisMap.values()), vl.getValueListInfo()));
101    }
102
103    /**
104     * @see javax.servlet.jsp.tagext.Tag#doStartTag()
105     */
106    public int doStartTag() throws JspException JavaDoc
107    {
108       init();
109       convertValueList();
110       return super.doStartTag();
111    }
112
113    /**
114     * @see javax.servlet.jsp.tagext.IterationTag#doAfterBody()
115     *
116     * @todo figure out why release is not working.
117     */
118    public int doAfterBody() throws JspException JavaDoc
119    {
120
121       DisplayProvider displayProvider = getDisplayProvider();
122
123       //If this is the first row, then print the column headers!
124 if (currentRowNumber == 0)
125       {
126          JspUtils.writePrevious(pageContext, displayProvider.getHeaderRowPreProcess());
127          JspUtils.writePrevious(pageContext, displayProvider.getHeaderCellPreProcess(null, null) + title
128                + displayProvider.getHeaderCellPostProcess());
129          for (Iterator JavaDoc iter = getColumns().iterator(); iter.hasNext();)
130          {
131             ColumnInfo info = (ColumnInfo) iter.next();
132             JspUtils.writePrevious(pageContext, displayProvider.getHeaderCellPreProcess(null, null));
133             JspUtils.writePrevious(pageContext, info.getTitle());
134             JspUtils.writePrevious(pageContext, displayProvider.getHeaderCellPostProcess());
135          }
136          JspUtils.writePrevious(pageContext, displayProvider.getHeaderRowPostProcess());
137
138          getColumns().clear();
139       }
140
141       if (beanInPageScope != null)
142       {
143          Map JavaDoc bean = (Map JavaDoc) beanInPageScope;
144          String JavaDoc style = getRowStyleClass();
145          pageContext.setAttribute(bean + "Style", style);
146          appendClassCellAttribute(style);
147
148          JspUtils.writePrevious(pageContext, displayProvider.getRowPreProcess(getCellAttributes()));
149
150          //Add all the columns to the tag context.
151
152          JspUtils.writePrevious(pageContext, displayProvider.getCellPreProcess(null) + bean.get("yaxis")
153                + displayProvider.getCellPostProcess());
154          for (Iterator JavaDoc iter = xAxisMap.keySet().iterator(); iter.hasNext();)
155          {
156             String JavaDoc label = JspUtils.format(iter.next(), null, null).toLowerCase().replace(' ', '_');
157
158             JspUtils.writePrevious(pageContext, displayProvider.getCellPreProcess(null));
159             if (bean.get(label) != null)
160             {
161                JspUtils.writePrevious(pageContext, JspUtils.format(bean.get(label), format, null));
162             }
163             else
164             {
165                JspUtils.writePrevious(pageContext, getRootTag().getConfig().getNullToken());
166             }
167             JspUtils.writePrevious(pageContext, displayProvider.getCellPostProcess());
168          }
169
170          JspUtils.writePrevious(pageContext, displayProvider.getRowPostProcess());
171          bodyContent.clearBody();
172       }
173
174       currentRowNumber++;
175       return processIteration();
176    }
177
178    /**
179     * @see javax.servlet.jsp.tagext.Tag#doEndTag()
180     */
181    public int doEndTag() throws JspException JavaDoc
182    {
183       int result = super.doEndTag();
184       reset();
185       return result;
186    }
187
188    private void reset()
189    {
190       this.format = DEFAULT_FORMAT;
191       this.title = null;
192       this.xAxisMap.clear();
193       this.yAxisMap.clear();
194    }
195
196    /**
197     * @see javax.servlet.jsp.tagext.Tag#release()
198     * @todo Create clean up method, call it at doEndTag, check whether is needed
199     * to be called in processIteration insteed of release method.
200     */
201    public void release()
202    {
203       super.release();
204       reset();
205    }
206
207    /**
208     * @param title
209     * The title to set.
210     */
211    public void setTitle(String JavaDoc title)
212    {
213       this.title = title;
214    }
215
216    /**
217     * @param format
218     * The format to set.
219     */
220    public void setFormat(String JavaDoc format)
221    {
222       this.format = format;
223    }
224 }
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