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Java > Open Source Codes > org > pentaho > ui > portlet > charting > CategoryDatasetChartPortlet


1 /*
2  * Copyright 2006 Pentaho Corporation. All rights reserved.
3  * This software was developed by Pentaho Corporation and is provided under the terms
4  * of the Mozilla Public License, Version 1.1, or any later version. You may not use
5  * this file except in compliance with the license. If you need a copy of the license,
6  * please go to http://www.mozilla.org/MPL/MPL-1.1.txt. The Original Code is the Pentaho
7  * BI Platform. The Initial Developer is Pentaho Corporation.
8  *
9  * Software distributed under the Mozilla Public License is distributed on an "AS IS"
10  * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. Please refer to
11  * the license for the specific language governing your rights and limitations.
12  *
13  * @created Aug 24, 2005
14  * @author James Dixon
15  */

16
17 package org.pentaho.ui.portlet.charting;
18
19 import java.io.IOException JavaDoc;
20 import java.util.ArrayList JavaDoc;
21 import java.util.StringTokenizer JavaDoc;
22 import javax.portlet.ActionRequest;
23 import javax.portlet.ActionResponse;
24 import javax.portlet.PortletException;
25 import javax.portlet.RenderRequest;
26 import javax.portlet.RenderResponse;
27 import org.apache.commons.logging.Log;
28 import org.apache.commons.logging.LogFactory;
29 import org.pentaho.messages.Messages;
30 import org.pentaho.core.util.UIUtil;
31 import org.pentaho.ui.component.charting.CategoryDatasetChartComponent;
32 import org.pentaho.ui.portlet.PentahoPortletSession;
33 import org.pentaho.ui.portlet.PortletRequestParameterProvider;
34 import org.pentaho.ui.portlet.PortletSessionParameterProvider;
35 import org.pentaho.ui.portlet.PortletUrlFactory;
36 import org.pentaho.ui.portlet.ViewPortlet;
37
38 public class CategoryDatasetChartPortlet extends ViewPortlet {
39
40     private static final String JavaDoc CHART = "chart"; //$NON-NLS-1$
41

42     private static final Log portletLogger = LogFactory.getLog(CategoryDatasetChartPortlet.class);
43
44     public Log getLogger() {
45         return portletLogger;
46     }
47
48     public void processPortletAction(ActionRequest request, ActionResponse response, PentahoPortletSession userSession) throws PortletException, IOException JavaDoc {
49
50     }
51
52     public void doPortletView(RenderRequest request, RenderResponse response, PentahoPortletSession userSession) throws PortletException, IOException JavaDoc {
53         response.setContentType("text/html"); //$NON-NLS-1$
54

55         PortletUrlFactory urlFactory = new PortletUrlFactory(response, request.getWindowState(), request.getPortletMode());
56
57         PortletRequestParameterProvider requestParameters = new PortletRequestParameterProvider(request);
58         PortletSessionParameterProvider sessionParameters = new PortletSessionParameterProvider(userSession);
59
60         String JavaDoc chartDefinitionStr = getSetting(CHART, null, request, requestParameters);
61
62         if (chartDefinitionStr == null) {
63             response.getWriter().print(Messages.getString("CategoryDatasetChartPortlet.ERROR_0001.NO_CHART_DEF")); //$NON-NLS-1$
64
return;
65         }
66
67         ArrayList JavaDoc messages = new ArrayList JavaDoc();
68         CategoryDatasetChartComponent chartComponent = null;
69         String JavaDoc urlDrillTemplate = getSetting("drill-url", null, request, null); //$NON-NLS-1$
70
String JavaDoc outerParams = getSetting("outer-params", null, request, null); //$NON-NLS-1$
71
String JavaDoc innerParam = getSetting("inner-param", null, request, null); //$NON-NLS-1$
72

73         try {
74             chartComponent = new CategoryDatasetChartComponent(chartDefinitionStr, urlFactory, messages);
75             chartComponent.validate(userSession, null);
76             chartComponent.setUrlTemplate(urlDrillTemplate);
77             StringTokenizer JavaDoc tokenizer = new StringTokenizer JavaDoc(outerParams, ";"); //$NON-NLS-1$
78
while (tokenizer.hasMoreTokens()) {
79                 chartComponent.addOuterParamName(tokenizer.nextToken());
80             }
81             chartComponent.setParamName(innerParam);
82
83             chartComponent.setDataAction(chartDefinitionStr);
84
85             chartComponent.setParameterProvider("request", requestParameters); //$NON-NLS-1$
86
chartComponent.setParameterProvider("session", sessionParameters); //$NON-NLS-1$
87

88             String JavaDoc content = chartComponent.getContent("text/html"); //$NON-NLS-1$
89

90             if (content == null || content.equals("")) { //$NON-NLS-1$
91
content = " "; //$NON-NLS-1$
92
}
93             response.getWriter().print(content);
94
95             if (content == null) {
96                 StringBuffer JavaDoc buffer = new StringBuffer JavaDoc();
97                 UIUtil.formatErrorMessage("text/html", Messages.getString("CategoryDatasetChartPortlet.ERROR_0002.COULD_NOT_CREATE"), messages, buffer); //$NON-NLS-1$ //$NON-NLS-2$
98
content = buffer.toString();
99             }
100         } finally {
101             if (chartComponent != null)
102                 chartComponent.dispose();
103         }
104     }
105 }
106
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