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1
28 package net.sf.jasperreports.engine.fill;
29
30 import java.sql.Connection  ;
31 import java.util.Map ;
32
33 import net.sf.jasperreports.engine.JRDataSource;
34 import net.sf.jasperreports.engine.JRDatasetParameter;
35 import net.sf.jasperreports.engine.JRDatasetRun;
36 import net.sf.jasperreports.engine.JRException;
37 import net.sf.jasperreports.engine.JRExpression;
38 import net.sf.jasperreports.engine.JRParameter;
39 import net.sf.jasperreports.engine.JRQuery;
40 import net.sf.jasperreports.engine.JRScriptletException;
41 import net.sf.jasperreports.engine.JRVariable;
42
43
49 public class JRFillDatasetRun implements JRDatasetRun
50 {
51 private final JRBaseFiller filler;
52
53 private final JRFillDataset dataset;
54
55 private JRExpression parametersMapExpression;
56
57 private JRDatasetParameter[] parameters;
58
59 private JRExpression connectionExpression;
60
61 private JRExpression dataSourceExpression;
62
63
64
71 public JRFillDatasetRun(JRBaseFiller filler, JRDatasetRun datasetRun, JRFillObjectFactory factory)
72 {
73 factory.put(datasetRun, this);
74
75 this.filler = filler;
76 this.dataset = (JRFillDataset) filler.datasetMap.get(datasetRun.getDatasetName());
77
78 parametersMapExpression = datasetRun.getParametersMapExpression();
79 parameters = datasetRun.getParameters();
80 connectionExpression = datasetRun.getConnectionExpression();
81 dataSourceExpression = datasetRun.getDataSourceExpression();
82 }
83
84
85
92 public void evaluate(JRFillElementDataset elementDataset, byte evaluation) throws JRException
93 {
94 Map parameterValues =
95 JRFillSubreport.getParameterValues(
96 filler,
97 parametersMapExpression,
98 parameters,
99 evaluation,
100 false,
101 dataset.getResourceBundle() != null, false );
104
105 try
106 {
107 if (dataSourceExpression != null)
108 {
109 JRDataSource dataSource = (JRDataSource) filler.evaluateExpression(dataSourceExpression, evaluation);
110 dataset.setDatasourceParameterValue(parameterValues, dataSource);
111 }
112 else if (connectionExpression != null)
113 {
114 Connection connection = (Connection ) filler.evaluateExpression(connectionExpression, evaluation);
115 dataset.setConnectionParameterValue(parameterValues, connection);
116 }
117
118 copyConnectionParameter(parameterValues);
119
120 dataset.setParameterValues(parameterValues);
121
122 dataset.filterElementDatasets(elementDataset);
123
124 dataset.initCalculator();
125
126 iterate();
127 }
128 finally
129 {
130 dataset.closeDatasource();
131 dataset.restoreElementDatasets();
132 }
133 }
134
135 protected void copyConnectionParameter(Map parameterValues)
136 {
137 JRQuery query = dataset.getQuery();
138 if (query != null)
139 {
140 String language = query.getLanguage();
141 if (connectionExpression == null &&
142 (language.equals("sql") || language.equals("SQL")) &&
143 !parameterValues.containsKey(JRParameter.REPORT_CONNECTION))
144 {
145 JRFillParameter connParam = (JRFillParameter) filler.getParametersMap().get(JRParameter.REPORT_CONNECTION);
146 Connection connection = (Connection ) connParam.getValue();
147 parameterValues.put(JRParameter.REPORT_CONNECTION, connection);
148 }
149 }
150 }
151
152 protected void iterate() throws JRException
153 {
154 dataset.start();
155
156 init();
157
158 if (dataset.next())
159 {
160 detail();
161
162 while (dataset.next())
163 {
164 checkInterrupted();
165
166 group();
167
168 detail();
169 }
170 }
171
172 }
173
174
175 protected void checkInterrupted()
176 {
177 if (Thread.currentThread().isInterrupted() || filler.isInterrupted())
178 {
179 filler.setInterrupted(true);
180
181 throw new JRFillInterruptedException();
182 }
183 }
184
185
186 protected void group() throws JRException, JRScriptletException
187 {
188 dataset.calculator.estimateGroupRuptures();
189
190 dataset.scriptlet.callBeforeGroupInit();
191 dataset.calculator.initializeVariables(JRVariable.RESET_TYPE_GROUP);
192 dataset.scriptlet.callAfterGroupInit();
193 }
194
195 protected void init() throws JRScriptletException, JRException
196 {
197 dataset.scriptlet.callBeforeReportInit();
198 dataset.calculator.initializeVariables(JRVariable.RESET_TYPE_REPORT);
199 dataset.scriptlet.callAfterReportInit();
200 }
201
202 protected void detail() throws JRScriptletException, JRException
203 {
204 dataset.scriptlet.callBeforeDetailEval();
205 dataset.calculator.calculateVariables();
206 dataset.scriptlet.callAfterDetailEval();
207 }
208
209 public String getDatasetName()
210 {
211 return dataset.getName();
212 }
213
214 public JRExpression getParametersMapExpression()
215 {
216 return parametersMapExpression;
217 }
218
219 public JRDatasetParameter[] getParameters()
220 {
221 return parameters;
222 }
223
224 public JRExpression getConnectionExpression()
225 {
226 return connectionExpression;
227 }
228
229 public JRExpression getDataSourceExpression()
230 {
231 return dataSourceExpression;
232 }
233
234 protected JRFillDataset getDataset()
235 {
236 return dataset;
237 }
238 }
239 |
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