|
1
28
29
33 package net.sf.jasperreports.compilers;
34
35 import java.text.SimpleDateFormat  ;
36 import java.util.ArrayList ;
37 import java.util.Collection ;
38 import java.util.HashMap ;
39 import java.util.Iterator ;
40 import java.util.List ;
41 import java.util.Map ;
42
43 import net.sf.jasperreports.engine.JRExpression;
44 import net.sf.jasperreports.engine.JRExpressionChunk;
45 import net.sf.jasperreports.engine.JRField;
46 import net.sf.jasperreports.engine.JRParameter;
47 import net.sf.jasperreports.engine.JRVariable;
48 import net.sf.jasperreports.engine.design.JRSourceCompileTask;
49 import net.sf.jasperreports.engine.util.JRStringUtil;
50
51
52
56 public class JRBshGenerator
57 {
58
59 private static Map fieldPrefixMap = null;
60 private static Map variablePrefixMap = null;
61 private static Map methodSuffixMap = null;
62
63
64
67 protected final JRSourceCompileTask sourceTask;
68
69 protected Map parametersMap;
70 protected Map fieldsMap;
71 protected Map variablesMap;
72 protected JRVariable[] variables;
73
74 static
75 {
76 fieldPrefixMap = new HashMap ();
77 fieldPrefixMap.put(new Byte (JRExpression.EVALUATION_OLD), "Old");
78 fieldPrefixMap.put(new Byte (JRExpression.EVALUATION_ESTIMATED), "");
79 fieldPrefixMap.put(new Byte (JRExpression.EVALUATION_DEFAULT), "");
80
81 variablePrefixMap = new HashMap ();
82 variablePrefixMap.put(new Byte (JRExpression.EVALUATION_OLD), "Old");
83 variablePrefixMap.put(new Byte (JRExpression.EVALUATION_ESTIMATED), "Estimated");
84 variablePrefixMap.put(new Byte (JRExpression.EVALUATION_DEFAULT), "");
85
86 methodSuffixMap = new HashMap ();
87 methodSuffixMap.put(new Byte (JRExpression.EVALUATION_OLD), "Old");
88 methodSuffixMap.put(new Byte (JRExpression.EVALUATION_ESTIMATED), "Estimated");
89 methodSuffixMap.put(new Byte (JRExpression.EVALUATION_DEFAULT), "");
90 }
91
92
93 protected JRBshGenerator(JRSourceCompileTask sourceTask)
94 {
95 this.sourceTask = sourceTask;
96
97 this.parametersMap = sourceTask.getParametersMap();
98 this.fieldsMap = sourceTask.getFieldsMap();
99 this.variablesMap = sourceTask.getVariablesMap();
100 this.variables = sourceTask.getVariables();
101 }
102
103
104
107 public static String generateScript(JRSourceCompileTask sourceTask)
108 {
109 JRBshGenerator generator = new JRBshGenerator(sourceTask);
110 return generator.generateScript();
111 }
112
113
114 protected String generateScript()
115 {
116 StringBuffer sb = new StringBuffer ();
117
118 generateScriptStart(sb);
119
120 generateDeclarations(sb);
121 generateInitMethod(sb);
122
123 sb.append("\n");
124 sb.append("\n");
125
126 List expressions = sourceTask.getExpressions();
127 sb.append(generateMethod(JRExpression.EVALUATION_DEFAULT, expressions));
128 if (sourceTask.isOnlyDefaultEvaluation())
129 {
130 List empty = new ArrayList ();
131 sb.append(generateMethod(JRExpression.EVALUATION_OLD, empty));
132 sb.append(generateMethod(JRExpression.EVALUATION_ESTIMATED, empty));
133 }
134 else
135 {
136 sb.append(generateMethod(JRExpression.EVALUATION_OLD, expressions));
137 sb.append(generateMethod(JRExpression.EVALUATION_ESTIMATED, expressions));
138 }
139
140 generateScriptEnd(sb);
141
142 return sb.toString();
143 }
144
145
146 protected final void generateScriptStart(StringBuffer sb)
147 {
148
149 sb.append("//\n");
150 sb.append("// Generated by JasperReports - ");
151 sb.append((new SimpleDateFormat ()).format(new java.util.Date ()));
152 sb.append("\n");
153 sb.append("//\n");
154 sb.append("import net.sf.jasperreports.engine.*;\n");
155 sb.append("import net.sf.jasperreports.engine.fill.*;\n");
156 sb.append("\n");
157 sb.append("import java.util.*;\n");
158 sb.append("import java.math.*;\n");
159 sb.append("import java.text.*;\n");
160 sb.append("import java.io.*;\n");
161 sb.append("import java.net.*;\n");
162 sb.append("\n");
163
164
165 String [] imports = sourceTask.getImports();
166 if (imports != null && imports.length > 0)
167 {
168 for (int i = 0; i < imports.length; i++)
169 {
170 sb.append("import ");
171 sb.append(imports[i]);
172 sb.append(";\n");
173 }
174 }
175
176
177 sb.append("\n");
178 sb.append("\n");
179 sb.append("createBshEvaluator()\n");
180 sb.append("{\n");
181 sb.append("\n");
182 sb.append("\n");
183 sb.append(" JREvaluator evaluator = null;\n");
184 sb.append("\n");
185 }
186
187
188 protected final void generateDeclarations(StringBuffer sb)
189 {
190
191 if (parametersMap != null && parametersMap.size() > 0)
192 {
193 Collection parameterNames = parametersMap.keySet();
194 for (Iterator it = parameterNames.iterator(); it.hasNext();)
195 {
196 sb.append(" JRFillParameter parameter_");
197 sb.append(JRStringUtil.getLiteral((String )it.next()));
198 sb.append(" = null;\n");
199 }
200 }
201
202
203 sb.append("\n");
204
205
206 if (fieldsMap != null && fieldsMap.size() > 0)
207 {
208 Collection fieldNames = fieldsMap.keySet();
209 for (Iterator it = fieldNames.iterator(); it.hasNext();)
210 {
211 sb.append(" JRFillField field_");
212 sb.append(JRStringUtil.getLiteral((String )it.next()));
213 sb.append(" = null;\n");
214 }
215 }
216
217
218 sb.append("\n");
219
220
221 if (variables != null && variables.length > 0)
222 {
223 for (int i = 0; i < variables.length; i++)
224 {
225 sb.append(" JRFillVariable variable_");
226 sb.append(JRStringUtil.getLiteral(variables[i].getName()));
227 sb.append(" = null;\n");
228 }
229 }
230 }
231
232
233 protected final void generateInitMethod(StringBuffer sb)
234 {
235
236 sb.append("\n");
237 sb.append("\n");
238 sb.append(" init(\n");
239 sb.append(" JREvaluator evaluator,\n");
240 sb.append(" Map parsm,\n");
241 sb.append(" Map fldsm,\n");
242 sb.append(" Map varsm\n");
243 sb.append(" )\n");
244 sb.append(" {\n");
245 sb.append(" super.evaluator = evaluator;\n");
246 sb.append("\n");
247
248
249 if (parametersMap != null && parametersMap.size() > 0)
250 {
251 Collection parameterNames = parametersMap.keySet();
252 String parameterName = null;
253 for (Iterator it = parameterNames.iterator(); it.hasNext();)
254 {
255 parameterName = (String )it.next();
256 sb.append(" super.parameter_");
257 sb.append(JRStringUtil.getLiteral(parameterName));
258 sb.append(" = (JRFillParameter)parsm.get(\"");
259 sb.append(parameterName);
260 sb.append("\");\n");
261 }
262 }
263
264
265 sb.append("\n");
266
267
268 if (fieldsMap != null && fieldsMap.size() > 0)
269 {
270 Collection fieldNames = fieldsMap.keySet();
271 String fieldName = null;
272 for (Iterator it = fieldNames.iterator(); it.hasNext();)
273 {
274 fieldName = (String )it.next();
275 sb.append(" super.field_");
276 sb.append(JRStringUtil.getLiteral(fieldName));
277 sb.append(" = (JRFillField)fldsm.get(\"");
278 sb.append(fieldName);
279 sb.append("\");\n");
280 }
281 }
282
283
284 sb.append("\n");
285
286
287 if (variables != null && variables.length > 0)
288 {
289 String variableName = null;
290 for (int i = 0; i < variables.length; i++)
291 {
292 variableName = variables[i].getName();
293 sb.append(" super.variable_");
294 sb.append(JRStringUtil.getLiteral(variableName));
295 sb.append(" = (JRFillVariable)varsm.get(\"");
296 sb.append(variableName);
297 sb.append("\");\n");
298 }
299 }
300
301
302 sb.append(" }\n");
303 }
304
305
306 protected void generateScriptEnd(StringBuffer sb)
307 {
308 sb.append("\n");
309 sb.append(" str(String key)\n");
310 sb.append(" {\n");
311 sb.append(" return super.evaluator.str(key);\n");
312 sb.append(" }\n");
313 sb.append("\n");
314 sb.append(" msg(String pattern, Object arg0)\n");
315 sb.append(" {\n");
316 sb.append(" return super.evaluator.msg(pattern, arg0);\n");
317 sb.append(" }\n");
318 sb.append("\n");
319 sb.append(" msg(String pattern, Object arg0, Object arg1)\n");
320 sb.append(" {\n");
321 sb.append(" return super.evaluator.msg(pattern, arg0, arg1);\n");
322 sb.append(" }\n");
323 sb.append("\n");
324 sb.append(" msg(String pattern, Object arg0, Object arg1, Object arg2)\n");
325 sb.append(" {\n");
326 sb.append(" return super.evaluator.msg(pattern, arg0, arg1, arg2);\n");
327 sb.append(" }\n");
328 sb.append("\n");
329 sb.append(" msg(String pattern, Object[] args)\n");
330 sb.append(" {\n");
331 sb.append(" return super.evaluator.msg(pattern, args);\n");
332 sb.append(" }\n");
333 sb.append("\n");
334 sb.append(" return this;\n");
335 sb.append("}\n");
336 }
337
338
339
342 protected final String generateMethod(byte evaluationType, List expressionsList)
343 {
344 StringBuffer sb = new StringBuffer ();
345
346
347 sb.append(" Object evaluate");
348 sb.append((String )methodSuffixMap.get(new Byte (evaluationType)));
349 sb.append("(int id)\n");
350 sb.append(" {\n");
351 sb.append(" Object value = null;\n");
352 sb.append("\n");
353 sb.append(" switch (id)\n");
354 sb.append(" {\n");
355
356 if (expressionsList != null && !expressionsList.isEmpty())
357 {
358 JRExpression expression = null;
359 for (Iterator it = expressionsList.iterator(); it.hasNext();)
360 {
361 expression = (JRExpression)it.next();
362
363 sb.append(" case ");
364 sb.append(sourceTask.getExpressionId(expression));
365 sb.append(" :\n");
366 sb.append(" {\n");
367 sb.append(" value = (");
368 sb.append(expression.getValueClassName());
369 sb.append(")(");
370 sb.append(this.generateExpression(expression, evaluationType));
371 sb.append(");\n");
372 sb.append(" break;\n");
373 sb.append(" }\n");
374 }
375 }
376
377
378 sb.append(" default :\n");
379 sb.append(" {\n");
380 sb.append(" }\n");
381 sb.append(" }\n");
382 sb.append(" \n");
383 sb.append(" return value;\n");
384 sb.append(" }\n");
385 sb.append("\n");
386 sb.append("\n");
387
388 return sb.toString();
389 }
390
391
392
395 private String generateExpression(
396 JRExpression expression,
397 byte evaluationType
398 )
399 {
400 JRParameter jrParameter = null;
401 JRField jrField = null;
402 JRVariable jrVariable = null;
403
404 StringBuffer sbuffer = new StringBuffer ();
405
406 JRExpressionChunk[] chunks = expression.getChunks();
407 JRExpressionChunk chunk = null;
408 String chunkText = null;
409 if (chunks != null && chunks.length > 0)
410 {
411 for(int i = 0; i < chunks.length; i++)
412 {
413 chunk = chunks[i];
414
415 chunkText = chunk.getText();
416 if (chunkText == null)
417 {
418 chunkText = "";
419 }
420
421 switch (chunk.getType())
422 {
423 case JRExpressionChunk.TYPE_TEXT :
424 {
425 sbuffer.append(chunkText);
426 break;
427 }
428 case JRExpressionChunk.TYPE_PARAMETER :
429 {
430 jrParameter = (JRParameter)parametersMap.get(chunkText);
431
432 sbuffer.append("((");
433 sbuffer.append(jrParameter.getValueClassName());
434 sbuffer.append(")super.parameter_");
435 sbuffer.append(JRStringUtil.getLiteral(chunkText));
436 sbuffer.append(".getValue())");
437
438 break;
439 }
440 case JRExpressionChunk.TYPE_FIELD :
441 {
442 jrField = (JRField)fieldsMap.get(chunkText);
443
444 sbuffer.append("((");
445 sbuffer.append(jrField.getValueClassName());
446 sbuffer.append(")super.field_");
447 sbuffer.append(JRStringUtil.getLiteral(chunkText));
448 sbuffer.append(".get");
449 sbuffer.append((String )fieldPrefixMap.get(new Byte (evaluationType)));
450 sbuffer.append("Value())");
451
452 break;
453 }
454 case JRExpressionChunk.TYPE_VARIABLE :
455 {
456 jrVariable = (JRVariable)variablesMap.get(chunkText);
457
458 sbuffer.append("((");
459 sbuffer.append(jrVariable.getValueClassName());
460 sbuffer.append(")super.variable_");
461 sbuffer.append(JRStringUtil.getLiteral(chunkText));
462 sbuffer.append(".get");
463 sbuffer.append((String )variablePrefixMap.get(new Byte (evaluationType)));
464 sbuffer.append("Value())");
465
466 break;
467 }
468 case JRExpressionChunk.TYPE_RESOURCE :
469 {
470 jrParameter = (JRParameter)parametersMap.get(chunkText);
471
472 sbuffer.append("super.evaluator.str(\"");
473 sbuffer.append(chunkText);
474 sbuffer.append("\")");
475
476 break;
477 }
478 }
479 }
480 }
481
482 if (sbuffer.length() == 0)
483 {
484 sbuffer.append("null");
485 }
486
487 return sbuffer.toString();
488 }
489 }
490 |
Popular Tags |
Java API By Example, From Geeks To Geeks.