svn-gvsig-desktop / trunk / libraries / libGDBMS / src / main / java / com / hardcode / gdbms / engine / data / DataSourceFactory.java @ 5251
History | View | Annotate | Download (54.6 KB)
1 |
package com.hardcode.gdbms.engine.data; |
---|---|
2 |
|
3 |
import java.io.ByteArrayInputStream; |
4 |
import java.io.File; |
5 |
import java.io.IOException; |
6 |
import java.rmi.server.UID; |
7 |
import java.sql.Connection; |
8 |
import java.sql.SQLException; |
9 |
import java.sql.Statement; |
10 |
import java.util.ArrayList; |
11 |
import java.util.HashMap; |
12 |
import java.util.Iterator; |
13 |
|
14 |
import com.hardcode.driverManager.Driver; |
15 |
import com.hardcode.driverManager.DriverLoadException; |
16 |
import com.hardcode.driverManager.DriverManager; |
17 |
import com.hardcode.driverManager.WriterManager; |
18 |
import com.hardcode.gdbms.engine.data.db.DBDataSource; |
19 |
import com.hardcode.gdbms.engine.data.db.DBDataSourceFactory; |
20 |
import com.hardcode.gdbms.engine.data.db.DBQuerySourceInfo; |
21 |
import com.hardcode.gdbms.engine.data.db.DBSourceInfo; |
22 |
import com.hardcode.gdbms.engine.data.db.DBTableSourceInfo; |
23 |
import com.hardcode.gdbms.engine.data.db.SpatialDBTableSourceInfo; |
24 |
import com.hardcode.gdbms.engine.data.driver.AlphanumericDBDriver; |
25 |
import com.hardcode.gdbms.engine.data.driver.DBDriver; |
26 |
import com.hardcode.gdbms.engine.data.driver.DriverException; |
27 |
import com.hardcode.gdbms.engine.data.driver.FileDriver; |
28 |
import com.hardcode.gdbms.engine.data.driver.GDBMSDriver; |
29 |
import com.hardcode.gdbms.engine.data.driver.ObjectDriver; |
30 |
import com.hardcode.gdbms.engine.data.file.FileCreationSourceInfo; |
31 |
import com.hardcode.gdbms.engine.data.file.FileDataSource; |
32 |
import com.hardcode.gdbms.engine.data.file.FileDataSourceFactory; |
33 |
import com.hardcode.gdbms.engine.data.file.FileSourceInfo; |
34 |
import com.hardcode.gdbms.engine.data.object.ObjectDataSource; |
35 |
import com.hardcode.gdbms.engine.data.object.ObjectDataSourceFactory; |
36 |
import com.hardcode.gdbms.engine.data.object.ObjectSourceInfo; |
37 |
import com.hardcode.gdbms.engine.data.persistence.DataSourceLayerMemento; |
38 |
import com.hardcode.gdbms.engine.data.persistence.Memento; |
39 |
import com.hardcode.gdbms.engine.data.persistence.OperationLayerMemento; |
40 |
import com.hardcode.gdbms.engine.instruction.Adapter; |
41 |
import com.hardcode.gdbms.engine.instruction.ColRefAdapter; |
42 |
import com.hardcode.gdbms.engine.instruction.CustomAdapter; |
43 |
import com.hardcode.gdbms.engine.instruction.EvaluationException; |
44 |
import com.hardcode.gdbms.engine.instruction.SelectAdapter; |
45 |
import com.hardcode.gdbms.engine.instruction.SemanticException; |
46 |
import com.hardcode.gdbms.engine.instruction.TableRefAdapter; |
47 |
import com.hardcode.gdbms.engine.instruction.UnionAdapter; |
48 |
import com.hardcode.gdbms.engine.instruction.Utilities; |
49 |
import com.hardcode.gdbms.engine.strategies.OperationDataSource; |
50 |
import com.hardcode.gdbms.engine.strategies.Strategy; |
51 |
import com.hardcode.gdbms.engine.strategies.StrategyManager; |
52 |
import com.hardcode.gdbms.parser.Node; |
53 |
import com.hardcode.gdbms.parser.ParseException; |
54 |
import com.hardcode.gdbms.parser.SQLEngine; |
55 |
import com.hardcode.gdbms.parser.SimpleNode; |
56 |
|
57 |
/**
|
58 |
* Clase factor?a de DataSources. Contiene m?todos para registrar las fuentes de
|
59 |
* datos (addXXXDataSource) y para obtener los DataSource's asociados a estas
|
60 |
* createRandomDataSource. Adem?s proporciona un m?todo para ejecutar consultas
|
61 |
* SQL a partir de la instrucci?n como cadena o a partir de la instrucci?n como
|
62 |
* ?rbol de adaptadores
|
63 |
*
|
64 |
* @author Fernando Gonz?lez Cort?s
|
65 |
*/
|
66 |
public class DataSourceFactory { |
67 |
public final static int MANUAL_OPENING = 0; |
68 |
|
69 |
public final static int AUTOMATIC_OPENING = 1; |
70 |
|
71 |
public final static int DATA_WARE_DIRECT_MODE = 0; |
72 |
|
73 |
public final static int DATA_WARE_COHERENT_ROW_ORDER = 1; |
74 |
|
75 |
final static int DEFAULT_DELAY = 5000; |
76 |
|
77 |
/**
|
78 |
* Asocia los nombres de las tablas con la informaci?n del origen de datos
|
79 |
*/
|
80 |
private HashMap tableSource = new HashMap(); |
81 |
|
82 |
/** Associates a name with the operation layer DataSource with that name */
|
83 |
private HashMap nameOperationDataSource = new HashMap(); |
84 |
|
85 |
/**
|
86 |
* Asocia los nombres de los or?genes de datos de base de datos con el
|
87 |
* nombre de la tabla en el sistema de gesti?n original
|
88 |
*/
|
89 |
private HashMap nameTable = new HashMap(); |
90 |
|
91 |
private HashMap sourceInfoServerViewInfo = new HashMap(); |
92 |
|
93 |
private DriverManager dm; |
94 |
|
95 |
private ModuleSupport ms = new ModuleSupport(); |
96 |
|
97 |
private long delay = DEFAULT_DELAY; |
98 |
|
99 |
private boolean delegating = false; |
100 |
|
101 |
private File tempDir = new File("."); |
102 |
|
103 |
private WriterManager wm;
|
104 |
|
105 |
/**
|
106 |
* Get's a unique id in the tableSource and nameOperationDataSource key sets
|
107 |
*
|
108 |
* @return unique id
|
109 |
*/
|
110 |
private String getUID() { |
111 |
UID uid = new UID(); |
112 |
|
113 |
String name = "gdbms" + uid.toString().replace(':','_'); |
114 |
return name;
|
115 |
} |
116 |
|
117 |
/**
|
118 |
* Removes all associations between names and data sources of any layer.
|
119 |
*/
|
120 |
public void removeAllDataSources() { |
121 |
tableSource.clear(); |
122 |
nameOperationDataSource.clear(); |
123 |
} |
124 |
|
125 |
/**
|
126 |
* Removes the association between the name and the data sources
|
127 |
*
|
128 |
* @param ds
|
129 |
* Name of the data source to remove
|
130 |
*
|
131 |
* @throws DriverException
|
132 |
* If ds is a database data source it's associated view must be
|
133 |
* deleted. Thrown if could not be deleted.
|
134 |
* @throws RuntimeException
|
135 |
* If there is no data source registered with that name
|
136 |
*/
|
137 |
public void remove(DataSource ds) throws DriverException { |
138 |
String name = ds.getName();
|
139 |
|
140 |
if (tableSource.remove(name) == null) { |
141 |
if (nameOperationDataSource.remove(name) == null) { |
142 |
throw new RuntimeException( |
143 |
"No datasource with the name. Data source name changed since the DataSource instance was retrieved?");
|
144 |
} |
145 |
} |
146 |
} |
147 |
|
148 |
/**
|
149 |
* Removes de View of the data source 'ds'
|
150 |
*
|
151 |
* @param ds
|
152 |
* DataSource whose view will be deleted
|
153 |
*
|
154 |
* @throws DriverException
|
155 |
* If the view could not be deleted
|
156 |
*/
|
157 |
private void clearView(DBDataSource ds) throws DriverException { |
158 |
DBTableSourceInfo dbInfo = (DBTableSourceInfo) ds.getSourceInfo(); |
159 |
String sql = "DROP VIEW " + dbInfo.tableName; |
160 |
ds.execute(sql); |
161 |
} |
162 |
|
163 |
/**
|
164 |
* Removes the views created at query delegation
|
165 |
*
|
166 |
* @throws DriverException
|
167 |
* If any view could not be removed
|
168 |
*/
|
169 |
public void clearViews() throws DriverException { |
170 |
Iterator i = sourceInfoServerViewInfo.values().iterator();
|
171 |
|
172 |
while (i.hasNext()) {
|
173 |
ServerViewInfo svi = (ServerViewInfo) i.next(); |
174 |
clearView(svi.adapter); |
175 |
} |
176 |
|
177 |
sourceInfoServerViewInfo.clear(); |
178 |
} |
179 |
|
180 |
/**
|
181 |
* A?ade una fuente de datos de objeto. Dado un objeto que implemente la
|
182 |
* interfaz del driver, se toma como fuente de datos y se le asocia un
|
183 |
* nombre
|
184 |
*
|
185 |
* @param rd
|
186 |
* objeto con la informaci?n
|
187 |
* @param name
|
188 |
* Nombre de la fuente de datos
|
189 |
*/
|
190 |
public void addDataSource(ObjectDriver rd, String name) { |
191 |
ObjectSourceInfo info = new ObjectSourceInfo();
|
192 |
info.driver = rd; |
193 |
tableSource.put(name, info); |
194 |
} |
195 |
|
196 |
/**
|
197 |
* A?ade una fuente de datos de objeto. Dado un objeto que implemente la
|
198 |
* interfaz del driver, se toma como fuente de datos y se le asocia un
|
199 |
* nombre
|
200 |
*
|
201 |
* @param rd
|
202 |
* objeto con la informaci?n
|
203 |
*
|
204 |
* @return the name of the data source
|
205 |
*/
|
206 |
public String addDataSource(ObjectDriver rd) { |
207 |
String ret = getUID();
|
208 |
addDataSource(rd, ret); |
209 |
|
210 |
return ret;
|
211 |
} |
212 |
|
213 |
/**
|
214 |
* Adds a new data source to the system. If the file doesn't exists it is
|
215 |
* created when necessary
|
216 |
*
|
217 |
* @param driverName
|
218 |
* Nombre del driver asociado a la fuente de datos
|
219 |
* @param name
|
220 |
* Nombre de la tabla con el que se har? referencia en las
|
221 |
* instrucciones
|
222 |
* @param file
|
223 |
* Fichero con los datos
|
224 |
*/
|
225 |
public void createFileDataSource(String driverName, String name, |
226 |
String file, String[] fieldNames, int[] fieldTypes) { |
227 |
FileCreationSourceInfo info = (FileCreationSourceInfo) getFileSourceInfo( |
228 |
new FileCreationSourceInfo(), driverName, name, file, false); |
229 |
info.fieldNames = fieldNames; |
230 |
info.fieldTypes = fieldTypes; |
231 |
tableSource.put(name, info); |
232 |
} |
233 |
|
234 |
/**
|
235 |
* A?ade un origen de datos de fichero al sistema. Cuando se cree un
|
236 |
* DataSource mediante la invocaci?n createRandomDataSource(String) se
|
237 |
* crear? una instancia del driver cuyo nombre es driverName
|
238 |
*
|
239 |
* @param driverName
|
240 |
* Nombre del driver asociado a la fuente de datos
|
241 |
* @param name
|
242 |
* Nombre de la tabla con el que se har? referencia en las
|
243 |
* instrucciones
|
244 |
* @param file
|
245 |
* Fichero con los datos
|
246 |
*/
|
247 |
public void addFileDataSource(String driverName, String name, String file) { |
248 |
FileSourceInfo info = getFileSourceInfo(new FileSourceInfo(),
|
249 |
driverName, name, file, false);
|
250 |
tableSource.put(name, info); |
251 |
} |
252 |
|
253 |
/**
|
254 |
* Gets a FileSourceInfo with the values passed in the parameters
|
255 |
*
|
256 |
* @param driverName
|
257 |
* @param name
|
258 |
* @param file
|
259 |
*
|
260 |
* @return FileSourceInfo
|
261 |
*/
|
262 |
private FileSourceInfo getFileSourceInfo(FileSourceInfo info,
|
263 |
String driverName, String name, String file, boolean spatial) { |
264 |
info.name = name; |
265 |
info.file = file; |
266 |
info.driverName = driverName; |
267 |
info.spatial = spatial; |
268 |
|
269 |
return info;
|
270 |
} |
271 |
|
272 |
/**
|
273 |
* Adds a spatial file data source to the system.
|
274 |
*
|
275 |
* @param driverName
|
276 |
* driver used to obtain the data
|
277 |
* @param name
|
278 |
* name of the data source
|
279 |
* @param file
|
280 |
* file with the data
|
281 |
*/
|
282 |
public void addSpatialFileDataSource(String driverName, String name, |
283 |
String file) {
|
284 |
FileSourceInfo info = getFileSourceInfo(new FileSourceInfo(),
|
285 |
driverName, name, file, true);
|
286 |
tableSource.put(name, info); |
287 |
} |
288 |
|
289 |
/**
|
290 |
* Adds a spatial file data source to the system.
|
291 |
*
|
292 |
* @param driverName
|
293 |
* driver used to obtain the data
|
294 |
* @param file
|
295 |
* file with the data
|
296 |
*
|
297 |
* @return String Generated name of the added data source
|
298 |
*/
|
299 |
public String addSpatialFileDataSource(String driverName, String file) { |
300 |
String ret = getUID();
|
301 |
addSpatialFileDataSource(driverName, ret, file); |
302 |
|
303 |
return ret;
|
304 |
} |
305 |
|
306 |
/**
|
307 |
* A?ade un origen de datos de fichero al sistema. Cuando se cree un
|
308 |
* DataSource mediante la invocaci?n createRandomDataSource(String) se
|
309 |
* crear? una instancia del driver cuyo nombre es driverName
|
310 |
*
|
311 |
* @param driverName
|
312 |
* Nombre del driver asociado a la fuente de datos
|
313 |
* @param file
|
314 |
* Fichero con los datos
|
315 |
*
|
316 |
* @return Nombre ?nico que se asocia a la tabla
|
317 |
*/
|
318 |
public String addFileDataSource(String driverName, String file) { |
319 |
String ret = getUID();
|
320 |
addFileDataSource(driverName, ret, file); |
321 |
|
322 |
return ret;
|
323 |
} |
324 |
|
325 |
/**
|
326 |
* Obtiene la informaci?n de la fuente de datos cuyo nombre se pasa como
|
327 |
* par?metro
|
328 |
*
|
329 |
* @param dataSourceName
|
330 |
* Nombre de la base de datos
|
331 |
*
|
332 |
* @return Debido a las distintas formas en las que se puede registrar un
|
333 |
* datasource, se devuelve un Object, que podr? ser una instancia de
|
334 |
* DataSourceFactory.FileDriverInfo, DataSourceFactory.DBDriverInfo
|
335 |
* o ReadDriver
|
336 |
*/
|
337 |
public SourceInfo getDriverInfo(String dataSourceName) { |
338 |
return (SourceInfo) tableSource.get(dataSourceName);
|
339 |
} |
340 |
|
341 |
/**
|
342 |
* Gets the information of all data sources registered in the system
|
343 |
*
|
344 |
* @return DriverInfo[]
|
345 |
*/
|
346 |
public SourceInfo[] getDriverInfos() { |
347 |
ArrayList ret = new ArrayList(); |
348 |
Iterator it = tableSource.values().iterator();
|
349 |
|
350 |
while (it.hasNext()) {
|
351 |
SourceInfo di = (SourceInfo) it.next(); |
352 |
ret.add(di); |
353 |
} |
354 |
|
355 |
return (SourceInfo[]) ret.toArray(new SourceInfo[0]); |
356 |
} |
357 |
|
358 |
/**
|
359 |
* A?ade un origen de datos de base de datos al sistema
|
360 |
*
|
361 |
* @param name
|
362 |
* Nombre de la tabla con el que se har? referencia en las
|
363 |
* instrucciones
|
364 |
* @param host
|
365 |
* Cadena de conexi?n para conectar con el sgbd donde se
|
366 |
* encuentra la tabla
|
367 |
* @param port
|
368 |
* Nombre del sgbd capaz de ejecutar SQL en el que reside la
|
369 |
* tabla. Generalmente ser? la parte de la cadena de conexi?n
|
370 |
* correspondiente a host, puerto y nombre de la base de datos
|
371 |
* @param user
|
372 |
* Nombre de usuario. Null para acceso sin usuario
|
373 |
* @param password
|
374 |
* Si el usuario es null se ignora el password
|
375 |
* @param dbName
|
376 |
* Nombre de la base de datos a la que se accede
|
377 |
* @param tableName
|
378 |
* Nombre de la tabla en la base de datos
|
379 |
* @param driverInfo
|
380 |
* Informaci?n para saber qu? driver debe acceder a la
|
381 |
* informaci?n. Se escoger? el driver cuyo valor de retorno del
|
382 |
* m?todo getType coincida con este valor
|
383 |
*/
|
384 |
public void addDBDataSourceByTable(String name, String host, int port, |
385 |
String user, String password, String dbName, String tableName, |
386 |
String driverInfo) {
|
387 |
DBTableSourceInfo info = new DBTableSourceInfo();
|
388 |
fillDBTableSourceInfo(info, name, host, port, user, password, dbName, |
389 |
tableName, driverInfo); |
390 |
tableSource.put(name, info); |
391 |
nameTable.put(name, tableName); |
392 |
} |
393 |
|
394 |
|
395 |
/**
|
396 |
* A?ade un origen de datos de base de datos al sistema
|
397 |
*
|
398 |
* @param name
|
399 |
* Nombre de la tabla con el que se har? referencia en las
|
400 |
* instrucciones
|
401 |
* @param Connection
|
402 |
* Conexion JDBC a la Base de datos ya abierta (el DataSource
|
403 |
* la usara, pero no la abrira/cerrara)
|
404 |
* @param tableName
|
405 |
* Nombre de la tabla en la base de datos
|
406 |
* @param driverInfo
|
407 |
* Informaci?n para saber qu? driver debe acceder a la
|
408 |
* informaci?n. Se escoger? el driver cuyo valor de retorno del
|
409 |
* m?todo getType coincida con este valor
|
410 |
*/
|
411 |
public void addDBDataSourceByTable(String name, Connection connection, String tableName, |
412 |
String driverInfo) {
|
413 |
DBTableSourceInfo info = new DBTableSourceInfo();
|
414 |
fillDBTableSourceInfo(info, name, connection, |
415 |
tableName, driverInfo); |
416 |
tableSource.put(name, info); |
417 |
nameTable.put(name, tableName); |
418 |
} |
419 |
|
420 |
|
421 |
|
422 |
|
423 |
/**
|
424 |
* Fills the info struct with the values passed in the parameters
|
425 |
*
|
426 |
* @param info
|
427 |
* struct to populate
|
428 |
* @param name
|
429 |
* Name of the data source
|
430 |
* @param host
|
431 |
* host where the data is
|
432 |
* @param port
|
433 |
* port number
|
434 |
* @param user
|
435 |
* user name or null.
|
436 |
* @param password
|
437 |
* if user name is null is ignored
|
438 |
* @param dbName
|
439 |
* database name
|
440 |
* @param tableName
|
441 |
* table name
|
442 |
* @param driverInfo
|
443 |
* name of the driver used to access the data
|
444 |
*/
|
445 |
private void fillDBTableSourceInfo(DBTableSourceInfo info, String name, |
446 |
String host, int port, String user, String password, String dbName, |
447 |
String tableName, String driverInfo) { |
448 |
info.name = name; |
449 |
info.host = host; |
450 |
info.port = port; |
451 |
info.user = user; |
452 |
info.password = password; |
453 |
info.dbName = dbName; |
454 |
info.dbms = host + ":" + port + "/" + dbName + "," + user + "," |
455 |
+ password; |
456 |
info.tableName = tableName; |
457 |
info.driverName = driverInfo; |
458 |
} |
459 |
|
460 |
/**
|
461 |
* Fills the info struct with the values passed in the parameters
|
462 |
*
|
463 |
* @param info
|
464 |
* struct to populate
|
465 |
* @param name
|
466 |
* Name of the data source
|
467 |
* @param Connection
|
468 |
* JDBC opened data base Connection
|
469 |
* @param port
|
470 |
* port number
|
471 |
* @param user
|
472 |
* user name or null.
|
473 |
* @param password
|
474 |
* if user name is null is ignored
|
475 |
* @param dbName
|
476 |
* database name
|
477 |
* @param tableName
|
478 |
* table name
|
479 |
* @param driverInfo
|
480 |
* name of the driver used to access the data
|
481 |
*/
|
482 |
private void fillDBTableSourceInfo(DBTableSourceInfo info, String name, |
483 |
Connection conection, String tableName, String driverInfo) { |
484 |
info.name = name; |
485 |
info.host = "";
|
486 |
info.port = -1;
|
487 |
info.user = "";
|
488 |
info.password = "";
|
489 |
info.dbName = "";
|
490 |
info.dbms = "";
|
491 |
info.connection= conection; |
492 |
info.tableName = tableName; |
493 |
info.driverName = driverInfo; |
494 |
} |
495 |
|
496 |
|
497 |
|
498 |
|
499 |
|
500 |
|
501 |
|
502 |
|
503 |
/**
|
504 |
* Adds a spatial database data source
|
505 |
*
|
506 |
* @param name
|
507 |
* Name of the data source
|
508 |
* @param host
|
509 |
* host where the data is
|
510 |
* @param port
|
511 |
* port number
|
512 |
* @param user
|
513 |
* user name or null.
|
514 |
* @param password
|
515 |
* if user name is null is ignored
|
516 |
* @param dbName
|
517 |
* database name
|
518 |
* @param tableName
|
519 |
* table name
|
520 |
* @param geometryFieldName
|
521 |
* name of the field that has the geometry
|
522 |
* @param driverInfo
|
523 |
* name of the driver used to access the data
|
524 |
*/
|
525 |
public void addSpatialDBDataSource(String name, String host, int port, |
526 |
String user, String password, String dbName, String tableName, |
527 |
String geometryFieldName, String driverInfo) { |
528 |
SpatialDBTableSourceInfo info = new SpatialDBTableSourceInfo();
|
529 |
fillDBTableSourceInfo(info, name, host, port, user, password, dbName, |
530 |
tableName, driverInfo); |
531 |
info.geometryField = geometryFieldName; |
532 |
tableSource.put(name, info); |
533 |
nameTable.put(name, tableName); |
534 |
} |
535 |
|
536 |
|
537 |
/**
|
538 |
* Adds a spatial database data source
|
539 |
*
|
540 |
* @param connection
|
541 |
*
|
542 |
* @param tableName
|
543 |
* table name
|
544 |
* @param geometryFieldName
|
545 |
* name of the field that has the geometry
|
546 |
* @param driverInfo
|
547 |
* name of the driver used to access the data
|
548 |
*/
|
549 |
public void addSpatialDBDataSource(String name, Connection connection, String tableName, |
550 |
String geometryFieldName, String driverInfo) { |
551 |
SpatialDBTableSourceInfo info = new SpatialDBTableSourceInfo();
|
552 |
fillDBTableSourceInfo(info, name, connection, |
553 |
tableName, driverInfo); |
554 |
info.geometryField = geometryFieldName; |
555 |
tableSource.put(name, info); |
556 |
nameTable.put(name, tableName); |
557 |
} |
558 |
|
559 |
|
560 |
|
561 |
|
562 |
|
563 |
|
564 |
|
565 |
|
566 |
/**
|
567 |
* Adds a spatial database data source
|
568 |
*
|
569 |
* @param host
|
570 |
* host where the data is
|
571 |
* @param port
|
572 |
* port number
|
573 |
* @param user
|
574 |
* user name or null.
|
575 |
* @param password
|
576 |
* if user name is null is ignored
|
577 |
* @param dbName
|
578 |
* database name
|
579 |
* @param tableName
|
580 |
* table name
|
581 |
* @param geometryFieldName
|
582 |
* name of the field that has the geometry
|
583 |
* @param driverInfo
|
584 |
* name of the driver used to access the data
|
585 |
*
|
586 |
* @return generated name of the added data source
|
587 |
*/
|
588 |
public String addSpatialDBDataSource(String host, int port, String user, |
589 |
String password, String dbName, String tableName, |
590 |
String geometryFieldName, String driverInfo) { |
591 |
String ret = getUID();
|
592 |
addSpatialDBDataSource(ret, host, port, user, password, dbName, |
593 |
tableName, geometryFieldName, driverInfo); |
594 |
|
595 |
return ret;
|
596 |
} |
597 |
|
598 |
|
599 |
/**
|
600 |
* Adds a spatial database data source
|
601 |
*
|
602 |
* @param connection
|
603 |
*
|
604 |
* @param tableName
|
605 |
* table name
|
606 |
* @param geometryFieldName
|
607 |
* name of the field that has the geometry
|
608 |
* @param driverInfo
|
609 |
* name of the driver used to access the data
|
610 |
*
|
611 |
* @return generated name of the added data source
|
612 |
*/
|
613 |
public String addSpatialDBDataSource(Connection connection, String tableName, |
614 |
String geometryFieldName, String driverInfo) { |
615 |
String ret = getUID();
|
616 |
addSpatialDBDataSource(ret, connection, |
617 |
tableName, geometryFieldName, driverInfo); |
618 |
|
619 |
return ret;
|
620 |
} |
621 |
|
622 |
|
623 |
|
624 |
|
625 |
|
626 |
/**
|
627 |
* A?ade un origen de datos de base de datos al sistema
|
628 |
*
|
629 |
* @param host
|
630 |
* Cadena de conexi?n para conectar con el sgbd donde se
|
631 |
* encuentra la tabla
|
632 |
* @param port
|
633 |
* Nombre del sgbd capaz de ejecutar SQL en el que reside la
|
634 |
* tabla. Generalmente ser? la parte de la cadena de conexi?n
|
635 |
* correspondiente a host, puerto y nombre de la base de datos
|
636 |
* @param user
|
637 |
* Nombre de usuario. Null para acceso sin usuario
|
638 |
* @param password
|
639 |
* Si el usuario es null se ignora el password
|
640 |
* @param dbName
|
641 |
* Nombre de la base de datos a la que se accede
|
642 |
* @param tableName
|
643 |
* Nombre de la tabla en la base de datos
|
644 |
* @param driverInfo
|
645 |
* Informaci?n para saber qu? driver debe acceder a la
|
646 |
* informaci?n. Se escoger? el driver cuyo valor de retorno del
|
647 |
* m?todo getType coincida con este valor
|
648 |
*
|
649 |
* @return Nombre de la tabla con el que se har? referencia en las
|
650 |
* instrucciones
|
651 |
*/
|
652 |
public String addDBDataSourceByTable(String host, int port, String user, |
653 |
String password, String dbName, String tableName, String driverInfo) { |
654 |
String name = getUID();
|
655 |
addDBDataSourceByTable(name, host, port, user, password, dbName, |
656 |
tableName, driverInfo); |
657 |
|
658 |
return name;
|
659 |
} |
660 |
|
661 |
|
662 |
|
663 |
/**
|
664 |
* A?ade un origen de datos de base de datos al sistema
|
665 |
*
|
666 |
* @param connection
|
667 |
* Conexion JDBC abierta a la base de datos(el DataSource
|
668 |
* usara la conexion, pero no la abrira/cerrara)
|
669 |
* @param tableName
|
670 |
* Nombre de la tabla en la base de datos
|
671 |
* @param driverInfo
|
672 |
* Informaci?n para saber qu? driver debe acceder a la
|
673 |
* informaci?n. Se escoger? el driver cuyo valor de retorno del
|
674 |
* m?todo getType coincida con este valor
|
675 |
*
|
676 |
* @return Nombre de la tabla con el que se har? referencia en las
|
677 |
* instrucciones
|
678 |
*/
|
679 |
public String addDBDataSourceByTable(Connection connection, String tableName, String driverInfo) { |
680 |
String name = getUID();
|
681 |
addDBDataSourceByTable(name, connection, |
682 |
tableName, driverInfo); |
683 |
|
684 |
return name;
|
685 |
} |
686 |
|
687 |
|
688 |
|
689 |
|
690 |
|
691 |
|
692 |
|
693 |
|
694 |
|
695 |
|
696 |
|
697 |
|
698 |
|
699 |
|
700 |
|
701 |
|
702 |
|
703 |
|
704 |
|
705 |
|
706 |
|
707 |
/**
|
708 |
* A?ade un origen de datos de base de datos al sistema
|
709 |
*
|
710 |
* @param name
|
711 |
* Nombre de la tabla con el que se har? referencia en las
|
712 |
* instrucciones
|
713 |
* @param host
|
714 |
* Cadena de conexi?n para conectar con el sgbd donde se
|
715 |
* encuentra la tabla
|
716 |
* @param port
|
717 |
* Nombre del sgbd capaz de ejecutar SQL en el que reside la
|
718 |
* tabla. Generalmente ser? la parte de la cadena de conexi?n
|
719 |
* correspondiente a host, puerto y nombre de la base de datos
|
720 |
* @param user
|
721 |
* Nombre de usuario. Null para acceso sin usuario
|
722 |
* @param password
|
723 |
* Si el usuario es null se ignora el password
|
724 |
* @param dbName
|
725 |
* Nombre de la base de datos a la que se accede
|
726 |
* @param sql
|
727 |
* Instrucci?n SQL que define los datos de la tabla
|
728 |
* @param driverInfo
|
729 |
* Informaci?n para saber qu? driver debe acceder a la
|
730 |
* informaci?n. Se escoger? el driver cuyo valor de retorno del
|
731 |
* m?todo getType coincida con este valor
|
732 |
*/
|
733 |
public void addDBDataSourceBySQL(String name, String host, int port, |
734 |
String user, String password, String dbName, String sql, |
735 |
String driverInfo) {
|
736 |
DBQuerySourceInfo info = new DBQuerySourceInfo();
|
737 |
info.name = name; |
738 |
info.host = host; |
739 |
info.port = port; |
740 |
info.user = user; |
741 |
info.password = password; |
742 |
info.dbName = dbName; |
743 |
info.dbms = host + ":" + port + "/" + dbName + "," + user + "," |
744 |
+ password; |
745 |
info.sql = sql; |
746 |
info.driverName = driverInfo; |
747 |
tableSource.put(name, info); |
748 |
} |
749 |
|
750 |
|
751 |
/**
|
752 |
* A?ade un origen de datos de base de datos al sistema
|
753 |
*
|
754 |
* @param name
|
755 |
* Nombre de la tabla con el que se har? referencia en las
|
756 |
* instrucciones
|
757 |
* @param connection
|
758 |
* Conexion de JDBC a la base de datos ya abierta (el
|
759 |
* DataSource la usara, pero no la abrira/cerrara)
|
760 |
* @param sql
|
761 |
* Instrucci?n SQL que define los datos de la tabla
|
762 |
* @param driverInfo
|
763 |
* Informaci?n para saber qu? driver debe acceder a la
|
764 |
* informaci?n. Se escoger? el driver cuyo valor de retorno del
|
765 |
* m?todo getType coincida con este valor
|
766 |
*/
|
767 |
public void addDBDataSourceBySQL(String name, Connection connection, String sql, |
768 |
String driverInfo) {
|
769 |
DBQuerySourceInfo info = new DBQuerySourceInfo();
|
770 |
info.name = name; |
771 |
info.host = "";
|
772 |
info.port = -1;
|
773 |
info.user = "";
|
774 |
info.password = "";
|
775 |
info.dbName = "";
|
776 |
info.dbms ="";
|
777 |
info.connection = connection; |
778 |
info.sql = sql; |
779 |
info.driverName = driverInfo; |
780 |
tableSource.put(name, info); |
781 |
} |
782 |
|
783 |
|
784 |
|
785 |
|
786 |
|
787 |
|
788 |
|
789 |
/**
|
790 |
* A?ade un origen de datos de base de datos al sistema
|
791 |
*
|
792 |
* @param host
|
793 |
* Cadena de conexi?n para conectar con el sgbd donde se
|
794 |
* encuentra la tabla
|
795 |
* @param port
|
796 |
* Nombre del sgbd capaz de ejecutar SQL en el que reside la
|
797 |
* tabla. Generalmente ser? la parte de la cadena de conexi?n
|
798 |
* correspondiente a host, puerto y nombre de la base de datos
|
799 |
* @param user
|
800 |
* Nombre de usuario. Null para acceso sin usuario
|
801 |
* @param password
|
802 |
* Si el usuario es null se ignora el password
|
803 |
* @param dbName
|
804 |
* Nombre de la base de datos a la que se accede
|
805 |
* @param sql
|
806 |
* Instrucci?n SQL que define los datos de la tabla
|
807 |
* @param driverInfo
|
808 |
* Informaci?n para saber qu? driver debe acceder a la
|
809 |
* informaci?n. Se escoger? el driver cuyo valor de retorno del
|
810 |
* m?todo getType coincida con este valor
|
811 |
*
|
812 |
* @return Nombre de la tabla con el que se har? referencia en las
|
813 |
* instrucciones
|
814 |
*/
|
815 |
public String addDBDataSourceBySQL(String host, int port, String user, |
816 |
String password, String dbName, String sql, String driverInfo) { |
817 |
String ret = getUID();
|
818 |
addDBDataSourceBySQL(ret, host, port, user, password, dbName, sql, |
819 |
driverInfo); |
820 |
|
821 |
return ret;
|
822 |
} |
823 |
|
824 |
/**
|
825 |
* A?ade un origen de datos de base de datos al sistema
|
826 |
*
|
827 |
* @param connection
|
828 |
* Conexion de JDBC ya abierta (el DataSource la usara
|
829 |
* pero no la abrira/cerrara)
|
830 |
* @param sql
|
831 |
* Instrucci?n SQL que define los datos de la tabla
|
832 |
* @param driverInfo
|
833 |
* Informaci?n para saber qu? driver debe acceder a la
|
834 |
* informaci?n. Se escoger? el driver cuyo valor de retorno del
|
835 |
* m?todo getType coincida con este valor
|
836 |
*
|
837 |
* @return Nombre de la tabla con el que se har? referencia en las
|
838 |
* instrucciones
|
839 |
*/
|
840 |
public String addDBDataSourceBySQL(Connection connection, String sql, String driverInfo) { |
841 |
String ret = getUID();
|
842 |
addDBDataSourceBySQL(ret, connection, sql, |
843 |
driverInfo); |
844 |
|
845 |
return ret;
|
846 |
} |
847 |
|
848 |
|
849 |
/**
|
850 |
* Cambia el nombre de una fuente de datos. Las consultas SQL que se
|
851 |
* ejecuten con el nombre anterior fallar?n
|
852 |
*
|
853 |
* @param oldName
|
854 |
* Nombre actual de la fuente de datos que se quiere cambiar
|
855 |
* @param newName
|
856 |
* Nombre que se le quiere poner a la fuente de datos
|
857 |
*
|
858 |
* @throws NoSuchTableException
|
859 |
* Si no hay ninguna fuente de datos de nombre 'oldName'
|
860 |
*/
|
861 |
public void changeDataSourceName(String oldName, String newName) |
862 |
throws NoSuchTableException {
|
863 |
SourceInfo di = (SourceInfo) tableSource.remove(oldName); |
864 |
|
865 |
if (di == null) { |
866 |
throw new NoSuchTableException(oldName); |
867 |
} |
868 |
|
869 |
tableSource.put(newName, di); |
870 |
} |
871 |
|
872 |
/**
|
873 |
* Gets the data source passed by adding the AutomaticDataSource decorator
|
874 |
* if factory mode is AUTOMATIC.
|
875 |
*
|
876 |
* @param ds
|
877 |
* DataSource
|
878 |
* @param mode
|
879 |
* opening mode
|
880 |
*
|
881 |
* @return DataSource
|
882 |
*/
|
883 |
private DataSource getModedDataSource(DataSource ds, int mode) { |
884 |
if (mode == AUTOMATIC_OPENING) {
|
885 |
return new AutomaticDataSource(ds, delay); |
886 |
} else {
|
887 |
return ds;
|
888 |
} |
889 |
} |
890 |
|
891 |
/**
|
892 |
* Sets the minimum delay between accesses needed to close the DataSource.
|
893 |
* If accesses are delayed more than 'delay' the DataSource MAY be closed.
|
894 |
* Only applies when the mode is set to AUTOMATIC_MODE
|
895 |
*
|
896 |
* @param delay
|
897 |
* time un milliseconds
|
898 |
*/
|
899 |
public void setClosingDelay(long delay) { |
900 |
this.delay = delay;
|
901 |
} |
902 |
|
903 |
/**
|
904 |
* Dado el nombre de una tabla, se busca la fuente de datos asociada a dicha
|
905 |
* tabla y se obtiene un datasource adecuado en funcion del tipo de fuente
|
906 |
* de datos accediendo al subsistema de drivers
|
907 |
*
|
908 |
* @param tableName
|
909 |
* Nombre de la fuente de datos
|
910 |
*
|
911 |
* @return DataSource que accede a dicha fuente
|
912 |
*
|
913 |
* @throws DriverLoadException
|
914 |
* @throws NoSuchTableException
|
915 |
* @throws DriverException
|
916 |
*/
|
917 |
public DataSource createRandomDataSource(String tableName) |
918 |
throws DriverLoadException, NoSuchTableException, DriverException {
|
919 |
return createRandomDataSource(tableName, tableName, MANUAL_OPENING);
|
920 |
} |
921 |
|
922 |
/**
|
923 |
* Dado el nombre de una tabla, se busca la fuente de datos asociada a dicha
|
924 |
* tabla y se obtiene un datasource adecuado en funcion del tipo de fuente
|
925 |
* de datos accediendo al subsistema de drivers
|
926 |
*
|
927 |
* @param tableName
|
928 |
* Nombre de la fuente de datos
|
929 |
* @param mode
|
930 |
* opening mode: AUTOMATIC_OPENING -> the DataSource opens
|
931 |
* automatically and closes after a while. It can be closed
|
932 |
* manually. MANUAL_OPENING -> the DataSource opens and closes
|
933 |
* manually
|
934 |
*
|
935 |
* @return DataSource que accede a dicha fuente
|
936 |
*
|
937 |
* @throws DriverLoadException
|
938 |
* @throws NoSuchTableException
|
939 |
* @throws DriverException
|
940 |
*/
|
941 |
public DataSource createRandomDataSource(String tableName, int mode) |
942 |
throws DriverLoadException, NoSuchTableException, DriverException {
|
943 |
return createRandomDataSource(tableName, tableName, mode);
|
944 |
} |
945 |
|
946 |
/**
|
947 |
* Dado el nombre de una tabla, se busca la fuente de datos asociada a dicha
|
948 |
* tabla y se obtiene un datasource adecuado en funcion del tipo de fuente
|
949 |
* de datos accediendo al subsistema de drivers. Se utiliza internamente
|
950 |
* como nombre del DataSource el alias que se pasa como par?metro
|
951 |
*
|
952 |
* @param tableName
|
953 |
* Nombre de la fuente de datos
|
954 |
* @param tableAlias
|
955 |
* Alias que tiene el DataSource en una instrucci?n
|
956 |
*
|
957 |
* @return DataSource que accede a dicha fuente de datos si la fuente de
|
958 |
* datos es alfanum?rica o SpatialDataSource si la fuente de datos
|
959 |
* es espacial
|
960 |
*
|
961 |
* @throws NoSuchTableException
|
962 |
* Si no hay una fuente de datos registrada con ese nombre
|
963 |
* @throws DriverLoadException
|
964 |
* Si hay alg?n error con el sistema de carga de drivers
|
965 |
* @throws DriverException
|
966 |
* If the created DataSource have to access some data this
|
967 |
* access fails
|
968 |
* @throws RuntimeException
|
969 |
* bug
|
970 |
*/
|
971 |
public DataSource createRandomDataSource(String tableName, String tableAlias) |
972 |
throws NoSuchTableException, DriverLoadException, DriverException {
|
973 |
return createRandomDataSource(tableName, tableAlias, MANUAL_OPENING);
|
974 |
} |
975 |
|
976 |
/**
|
977 |
* Dado el nombre de una tabla, se busca la fuente de datos asociada a dicha
|
978 |
* tabla y se obtiene un datasource adecuado en funcion del tipo de fuente
|
979 |
* de datos accediendo al subsistema de drivers. Se utiliza internamente
|
980 |
* como nombre del DataSource el alias que se pasa como par?metro
|
981 |
*
|
982 |
* @param tableName
|
983 |
* Nombre de la fuente de datos
|
984 |
* @param tableAlias
|
985 |
* Alias que tiene el DataSource en una instrucci?n
|
986 |
* @param mode
|
987 |
* openning mode
|
988 |
*
|
989 |
* @return DataSource que accede a dicha fuente de datos si la fuente de
|
990 |
* datos es alfanum?rica o SpatialDataSource si la fuente de datos
|
991 |
* es espacial
|
992 |
*
|
993 |
* @throws NoSuchTableException
|
994 |
* Si no hay una fuente de datos registrada con ese nombre
|
995 |
* @throws DriverLoadException
|
996 |
* Si hay alg?n error con el sistema de carga de drivers
|
997 |
* @throws DriverException
|
998 |
* If the created DataSource have to access some data this
|
999 |
* access fails
|
1000 |
* @throws RuntimeException
|
1001 |
* bug
|
1002 |
*/
|
1003 |
public DataSource createRandomDataSource(String tableName, |
1004 |
String tableAlias, int mode) throws NoSuchTableException, |
1005 |
DriverLoadException, DriverException { |
1006 |
Object o = tableSource.get(tableName);
|
1007 |
|
1008 |
if (o == null) { |
1009 |
// may be a operation layer DataSource
|
1010 |
OperationDataSource ret = (OperationDataSource) nameOperationDataSource |
1011 |
.get(tableName); |
1012 |
|
1013 |
if (ret != null) { |
1014 |
ret.setName(tableAlias); |
1015 |
|
1016 |
return getModedDataSource(ret, mode);
|
1017 |
} |
1018 |
|
1019 |
// table not found
|
1020 |
throw new NoSuchTableException(tableName); |
1021 |
} |
1022 |
|
1023 |
SourceInfo info = (SourceInfo) o; |
1024 |
info.name = tableAlias; |
1025 |
|
1026 |
if (info instanceof FileSourceInfo) { |
1027 |
FileSourceInfo fileInfo = (FileSourceInfo) info; |
1028 |
|
1029 |
Driver d = dm.getDriver(fileInfo.driverName);
|
1030 |
|
1031 |
if (info instanceof FileCreationSourceInfo) { |
1032 |
FileCreationSourceInfo creationInfo = (FileCreationSourceInfo) info; |
1033 |
try {
|
1034 |
if (!new File(creationInfo.file).exists()) { |
1035 |
((FileDriver) d).createSource(creationInfo.file, |
1036 |
creationInfo.fieldNames, |
1037 |
creationInfo.fieldTypes); |
1038 |
} |
1039 |
} catch (IOException e) { |
1040 |
throw new DriverException(e); |
1041 |
} |
1042 |
} |
1043 |
|
1044 |
FileDataSource adapter; |
1045 |
|
1046 |
if (fileInfo.spatial) {
|
1047 |
adapter = FileDataSourceFactory.newSpatialInstance(); |
1048 |
} else {
|
1049 |
adapter = FileDataSourceFactory.newInstance(); |
1050 |
} |
1051 |
|
1052 |
((GDBMSDriver) d).setDataSourceFactory(this);
|
1053 |
adapter.setDriver((FileDriver) d); |
1054 |
adapter.setSourceInfo(fileInfo); |
1055 |
adapter.setDataSourceFactory(this);
|
1056 |
|
1057 |
return getModedDataSource(adapter, mode);
|
1058 |
} else if (info instanceof DBQuerySourceInfo) { |
1059 |
DBQuerySourceInfo dbInfo = (DBQuerySourceInfo) info; |
1060 |
|
1061 |
String driverInfo = dbInfo.driverName;
|
1062 |
Driver d = dm.getDriver(driverInfo);
|
1063 |
|
1064 |
((GDBMSDriver) d).setDataSourceFactory(this);
|
1065 |
return getModedDataSource(getDataSourceByQuery(dbInfo.sql,
|
1066 |
(AlphanumericDBDriver) d, dbInfo), mode); |
1067 |
} else if (info instanceof DBTableSourceInfo) { |
1068 |
DBTableSourceInfo dbInfo = (DBTableSourceInfo) info; |
1069 |
|
1070 |
String driverInfo = dbInfo.driverName;
|
1071 |
Driver d = dm.getDriver(driverInfo);
|
1072 |
|
1073 |
DBDataSource adapter; |
1074 |
|
1075 |
if (info instanceof SpatialDBTableSourceInfo) { |
1076 |
adapter = DBDataSourceFactory.newSpatialDataSourceInstance(); |
1077 |
} else {
|
1078 |
adapter = DBDataSourceFactory.newDataSourceInstance(); |
1079 |
} |
1080 |
|
1081 |
((GDBMSDriver) d).setDataSourceFactory(this);
|
1082 |
adapter.setDriver((DBDriver) d); |
1083 |
adapter.setSourceInfo(dbInfo); |
1084 |
adapter.setDataSourceFactory(this);
|
1085 |
|
1086 |
return getModedDataSource(adapter, mode);
|
1087 |
} else if (info instanceof ObjectSourceInfo) { |
1088 |
ObjectSourceInfo driverInfo = (ObjectSourceInfo) o; |
1089 |
ObjectDataSource adapter = ObjectDataSourceFactory.newInstance(); |
1090 |
driverInfo.driver.setDataSourceFactory(this);
|
1091 |
adapter.setDriver(driverInfo.driver); |
1092 |
adapter.setSourceInfo((ObjectSourceInfo) driverInfo); |
1093 |
adapter.setDataSourceFactory(this);
|
1094 |
|
1095 |
return getModedDataSource(adapter, mode);
|
1096 |
} else {
|
1097 |
throw new RuntimeException(); |
1098 |
} |
1099 |
} |
1100 |
|
1101 |
/**
|
1102 |
* Creates a DataSource from a memento object with the manual opening mode
|
1103 |
*
|
1104 |
* @param m
|
1105 |
* memento
|
1106 |
*
|
1107 |
* @return DataSource
|
1108 |
*
|
1109 |
* @throws RuntimeException
|
1110 |
* If the DataSource class cannot be instatiated
|
1111 |
*/
|
1112 |
public DataSource createRandomDataSource(Memento m) { |
1113 |
return createRandomDataSource(m, DataSourceFactory.MANUAL_OPENING);
|
1114 |
} |
1115 |
|
1116 |
/**
|
1117 |
* Creates a DataSource from a memento object with the specified opening
|
1118 |
* mode
|
1119 |
*
|
1120 |
* @param m
|
1121 |
* memento
|
1122 |
* @param mode
|
1123 |
* opening mode
|
1124 |
*
|
1125 |
* @return DataSource
|
1126 |
*
|
1127 |
* @throws RuntimeException
|
1128 |
* If the DataSource class cannot be instatiated
|
1129 |
*/
|
1130 |
public DataSource createRandomDataSource(Memento m, int mode) { |
1131 |
if (m instanceof DataSourceLayerMemento) { |
1132 |
DataSourceLayerMemento mem = (DataSourceLayerMemento) m; |
1133 |
|
1134 |
try {
|
1135 |
return createRandomDataSource(mem.getTableName(), mem
|
1136 |
.getTableAlias(), mode); |
1137 |
} catch (DriverLoadException e) {
|
1138 |
throw new RuntimeException( |
1139 |
"La informaci?n guardada no es consistente", e);
|
1140 |
} catch (NoSuchTableException e) {
|
1141 |
throw new RuntimeException( |
1142 |
"La informaci?n guardada no es consistente", e);
|
1143 |
} catch (DriverException e) {
|
1144 |
throw new RuntimeException(e); |
1145 |
} |
1146 |
} else {
|
1147 |
OperationLayerMemento mem = (OperationLayerMemento) m; |
1148 |
|
1149 |
try {
|
1150 |
return executeSQL(mem.getSql(), mode);
|
1151 |
} catch (DriverLoadException e) {
|
1152 |
throw new RuntimeException( |
1153 |
"La informaci?n guardada no es consistente", e);
|
1154 |
} catch (ParseException e) { |
1155 |
throw new RuntimeException( |
1156 |
"La informaci?n guardada no es consistente", e);
|
1157 |
} catch (DriverException e) {
|
1158 |
throw new RuntimeException( |
1159 |
"La informaci?n guardada no es consistente", e);
|
1160 |
} catch (SemanticException e) {
|
1161 |
throw new RuntimeException( |
1162 |
"La informaci?n guardada no es consistente", e);
|
1163 |
} catch (IOException e) { |
1164 |
throw new RuntimeException( |
1165 |
"La informaci?n guardada no es consistente", e);
|
1166 |
} catch (EvaluationException e) {
|
1167 |
throw new RuntimeException( |
1168 |
"La informaci?n guardada no es consistente", e);
|
1169 |
} |
1170 |
} |
1171 |
} |
1172 |
|
1173 |
/**
|
1174 |
* Devuelve true si todas las tablas provienen del mismo data base
|
1175 |
* management system
|
1176 |
*
|
1177 |
* @param tables
|
1178 |
* Array de tablas
|
1179 |
*
|
1180 |
* @return boolean
|
1181 |
*/
|
1182 |
private boolean sameDBMS(DataSource[] tables) { |
1183 |
if (!(tables[0] instanceof DBDataSource)) { |
1184 |
return false; |
1185 |
} |
1186 |
|
1187 |
String dbms = ((DBDataSource) tables[0]).getDBMS(); |
1188 |
|
1189 |
for (int i = 1; i < tables.length; i++) { |
1190 |
if (!(tables[i] instanceof DBDataSource)) { |
1191 |
return false; |
1192 |
} |
1193 |
|
1194 |
if (!dbms.equals(((DBDataSource) tables[1]).getDBMS())) { |
1195 |
return false; |
1196 |
} |
1197 |
} |
1198 |
|
1199 |
return true; |
1200 |
} |
1201 |
|
1202 |
/**
|
1203 |
* A partir de una instrucci?n select se encarga de obtener el DataSource
|
1204 |
* resultado de la ejecuci?n de dicha instrucci?n
|
1205 |
*
|
1206 |
* @param instr
|
1207 |
* Instrucci?n select origen del datasource
|
1208 |
* @param mode
|
1209 |
* opening mode
|
1210 |
*
|
1211 |
* @return DataSource que accede a los datos resultado de ejecutar la select
|
1212 |
*
|
1213 |
* @throws DriverLoadException
|
1214 |
* @throws DriverException
|
1215 |
* Si fallo la lectura de la fuente de datos por parte del
|
1216 |
* driver
|
1217 |
* @throws SemanticException
|
1218 |
* Si la instrucci?n tiene errores sem?nticos
|
1219 |
* @throws IOException
|
1220 |
* Si se produce un error accediendo a las estructuras de datos
|
1221 |
* internas
|
1222 |
* @throws EvaluationException
|
1223 |
* If there's an error evaluating any expression
|
1224 |
*/
|
1225 |
public DataSource createRandomDataSource(SelectAdapter instr, int mode) |
1226 |
throws DriverLoadException, DriverException, SemanticException,
|
1227 |
IOException, EvaluationException {
|
1228 |
return getModedDataSource(getDataSource(instr), mode);
|
1229 |
} |
1230 |
|
1231 |
/**
|
1232 |
* Creates a view in the database management system that hosts the data
|
1233 |
* source 'dbds'. The view is defined by the sql parameter
|
1234 |
*
|
1235 |
* @param dbds
|
1236 |
* DataSource used to execute the query
|
1237 |
* @param sql
|
1238 |
* The SQL query defining the view
|
1239 |
*
|
1240 |
* @return Name of the view
|
1241 |
*
|
1242 |
* @throws DriverException
|
1243 |
* If the view cannot be created
|
1244 |
*/
|
1245 |
private String getView(DBDataSource dbds, String sql) |
1246 |
throws DriverException {
|
1247 |
ServerViewInfo svi = (ServerViewInfo) sourceInfoServerViewInfo.get(dbds |
1248 |
.getSourceInfo()); |
1249 |
|
1250 |
/*
|
1251 |
* Return the view name if it's already created or create the view if
|
1252 |
* it's not created
|
1253 |
*/
|
1254 |
if (svi != null) { |
1255 |
return svi.viewName;
|
1256 |
} else {
|
1257 |
// create the view
|
1258 |
String viewName = getUID();
|
1259 |
String viewQuery = "CREATE VIEW " + viewName + " AS " + sql; |
1260 |
dbds.execute(viewQuery); |
1261 |
|
1262 |
// Register the view created
|
1263 |
sourceInfoServerViewInfo.put(dbds.getSourceInfo(), |
1264 |
new ServerViewInfo(dbds, viewName));
|
1265 |
|
1266 |
return viewName;
|
1267 |
} |
1268 |
} |
1269 |
|
1270 |
/**
|
1271 |
* Gets a DataSource implementation with the sql instruction as the data
|
1272 |
* source by creating a view in the underlaying datasource management system
|
1273 |
*
|
1274 |
* @param sql
|
1275 |
* Instruction definig the data source
|
1276 |
* @param driver
|
1277 |
* Driver used to access the data source
|
1278 |
* @param dbInfo
|
1279 |
* data source info
|
1280 |
*
|
1281 |
* @return DataSource
|
1282 |
*
|
1283 |
* @throws DriverException
|
1284 |
* If cannot create the view
|
1285 |
*/
|
1286 |
private DBDataSource getDataSourceByQuery(String sql, |
1287 |
AlphanumericDBDriver driver, DBTableSourceInfo dbInfo) |
1288 |
throws DriverException {
|
1289 |
// Create the adapter
|
1290 |
DBDataSource adapter = DBDataSourceFactory.newDataSourceInstance(); |
1291 |
|
1292 |
// set the driver
|
1293 |
adapter.setDriver(driver); |
1294 |
|
1295 |
// Create the query
|
1296 |
adapter.setSourceInfo(dbInfo); |
1297 |
|
1298 |
// Gets the view name
|
1299 |
String viewName = getView(adapter, sql);
|
1300 |
|
1301 |
// Complete the source info with the view name
|
1302 |
dbInfo.tableName = viewName; |
1303 |
|
1304 |
// Register the name association
|
1305 |
nameTable.put(dbInfo.name, viewName); |
1306 |
|
1307 |
// setup the adapter
|
1308 |
adapter.setSourceInfo(dbInfo); |
1309 |
adapter.setDataSourceFactory(this);
|
1310 |
|
1311 |
return adapter;
|
1312 |
} |
1313 |
|
1314 |
/**
|
1315 |
* A partir de una instrucci?n select se encarga de obtener el DataSource
|
1316 |
* resultado de la ejecuci?n de dicha instrucci?n
|
1317 |
*
|
1318 |
* @param instr
|
1319 |
* Instrucci?n select origen del datasource
|
1320 |
*
|
1321 |
* @return DataSource que accede a los datos resultado de ejecutar la select
|
1322 |
*
|
1323 |
* @throws DriverException
|
1324 |
* @throws SemanticException
|
1325 |
* @throws IOException
|
1326 |
* @throws EvaluationException
|
1327 |
* @throws RuntimeException
|
1328 |
* bug
|
1329 |
*/
|
1330 |
private DataSource getDataSource(SelectAdapter instr) |
1331 |
throws DriverException, SemanticException, IOException, |
1332 |
EvaluationException { |
1333 |
DataSource[] tables = instr.getTables(); |
1334 |
|
1335 |
// Estrategia de delegaci?n de la instrucci?n en el sgbd original de la
|
1336 |
// tabla
|
1337 |
if (sameDBMS(tables) && delegating) {
|
1338 |
String sql = translateInstruction(instr, tables);
|
1339 |
|
1340 |
DBDataSource table = (DBDataSource) tables[0];
|
1341 |
|
1342 |
// Set the driver info
|
1343 |
DBSourceInfo source = (DBSourceInfo) table.getSourceInfo(); |
1344 |
String dataSourceName = addDBDataSourceBySQL(source.host,
|
1345 |
source.port, source.user, source.password, source.dbName, |
1346 |
sql, source.driverName); |
1347 |
|
1348 |
try {
|
1349 |
return createRandomDataSource(dataSourceName,
|
1350 |
DataSourceFactory.MANUAL_OPENING); |
1351 |
} catch (NoSuchTableException e) {
|
1352 |
throw new RuntimeException(e); |
1353 |
} catch (DriverLoadException e) {
|
1354 |
throw new RuntimeException(e); |
1355 |
} catch (DriverException e) {
|
1356 |
throw new RuntimeException(e); |
1357 |
} |
1358 |
} |
1359 |
|
1360 |
// Estrategia normal
|
1361 |
Strategy strategy = StrategyManager.getStrategy(instr); |
1362 |
|
1363 |
OperationDataSource ret = strategy.select(instr); |
1364 |
|
1365 |
ret.setName(getUID()); |
1366 |
nameOperationDataSource.put(ret.getName(), ret); |
1367 |
|
1368 |
return ret;
|
1369 |
} |
1370 |
|
1371 |
/**
|
1372 |
* Translates the table references by changind the gdbms name with the
|
1373 |
* underlaying database management system table name
|
1374 |
*
|
1375 |
* @param instr
|
1376 |
* root of the adapted tree
|
1377 |
* @param tables
|
1378 |
* DataSources involved in the instruction
|
1379 |
*
|
1380 |
* @return The translated sql query
|
1381 |
*
|
1382 |
* @throws DriverException
|
1383 |
* If driver access fails
|
1384 |
* @throws SemanticException
|
1385 |
* If the instruction is not semantically correct
|
1386 |
*/
|
1387 |
private String translateInstruction(Adapter instr, DataSource[] tables) |
1388 |
throws DriverException, SemanticException {
|
1389 |
HashMap instrNameDBName = new HashMap(); |
1390 |
|
1391 |
translateFromTables(instr, instrNameDBName); |
1392 |
translateColRefs(instr, instrNameDBName, tables); |
1393 |
|
1394 |
return Utilities.getText(instr.getEntity()); |
1395 |
} |
1396 |
|
1397 |
/**
|
1398 |
* Gets the name of the table where the field is in
|
1399 |
*
|
1400 |
* @param fieldName
|
1401 |
* field whose table wants to be guessed
|
1402 |
* @param tables
|
1403 |
* tables involved in the search
|
1404 |
*
|
1405 |
* @return table name
|
1406 |
*
|
1407 |
* @throws DriverException
|
1408 |
* If driver access fails
|
1409 |
* @throws SemanticException
|
1410 |
* If the instruction is not semantically correct
|
1411 |
*/
|
1412 |
private String guessTableName(String fieldName, DataSource[] tables) |
1413 |
throws DriverException, SemanticException {
|
1414 |
int tableIndex = -1; |
1415 |
|
1416 |
for (int i = 0; i < tables.length; i++) { |
1417 |
tables[i].start(); |
1418 |
|
1419 |
if (tables[i].getFieldIndexByName(fieldName) != -1) { |
1420 |
if (tableIndex != -1) { |
1421 |
throw new SemanticException("ambiguous column reference: " |
1422 |
+ fieldName); |
1423 |
} else {
|
1424 |
tableIndex = i; |
1425 |
} |
1426 |
} |
1427 |
|
1428 |
tables[i].stop(); |
1429 |
} |
1430 |
|
1431 |
if (tableIndex == -1) { |
1432 |
throw new SemanticException("Field not found: " + fieldName); |
1433 |
} |
1434 |
|
1435 |
return tables[tableIndex].getName();
|
1436 |
} |
1437 |
|
1438 |
/**
|
1439 |
* Translates the table references by changind the gdbms name with the
|
1440 |
* underlaying database management system table name
|
1441 |
*
|
1442 |
* @param adapter
|
1443 |
* adapter processed
|
1444 |
* @param instrNameDBName
|
1445 |
* hasmap with the gdbms names a s the keys and the database name
|
1446 |
* as the values.
|
1447 |
* @param tables
|
1448 |
* tables involved in the instruction
|
1449 |
*
|
1450 |
* @throws DriverException
|
1451 |
* If driver access fails
|
1452 |
* @throws SemanticException
|
1453 |
* If the instruction is not semantically correct
|
1454 |
*/
|
1455 |
private void translateColRefs(Adapter adapter, HashMap instrNameDBName, |
1456 |
DataSource[] tables) throws DriverException, SemanticException { |
1457 |
if (adapter instanceof ColRefAdapter) { |
1458 |
ColRefAdapter tra = (ColRefAdapter) adapter; |
1459 |
SimpleNode s = tra.getEntity(); |
1460 |
|
1461 |
if (s.first_token != s.last_token) {
|
1462 |
String name = s.first_token.image;
|
1463 |
s.first_token.image = instrNameDBName.get(name).toString(); |
1464 |
} else {
|
1465 |
String tableName = guessTableName(s.first_token.image, tables);
|
1466 |
s.first_token.image = instrNameDBName.get(tableName) + "."
|
1467 |
+ s.first_token.image; |
1468 |
} |
1469 |
} else {
|
1470 |
Adapter[] hijos = adapter.getChilds();
|
1471 |
|
1472 |
for (int i = 0; i < hijos.length; i++) { |
1473 |
translateColRefs(hijos[i], instrNameDBName, tables); |
1474 |
} |
1475 |
} |
1476 |
} |
1477 |
|
1478 |
/**
|
1479 |
* Translates the table references by changind the gdbms name with the
|
1480 |
* underlaying database management system table name
|
1481 |
*
|
1482 |
* @param adapter
|
1483 |
* adapter processed
|
1484 |
* @param instrNameDBName
|
1485 |
* hasmap with the gdbms names a s the keys and the database name
|
1486 |
* as the values.
|
1487 |
*/
|
1488 |
private void translateFromTables(Adapter adapter, HashMap instrNameDBName) { |
1489 |
if (adapter instanceof TableRefAdapter) { |
1490 |
TableRefAdapter tra = (TableRefAdapter) adapter; |
1491 |
SimpleNode s = tra.getEntity(); |
1492 |
|
1493 |
if (s.first_token == s.last_token) {
|
1494 |
String alias = "gdbms" + System.currentTimeMillis(); |
1495 |
String name = s.first_token.image;
|
1496 |
s.first_token.image = nameTable.get(name) + " " + alias;
|
1497 |
instrNameDBName.put(name, alias); |
1498 |
} else {
|
1499 |
String alias = s.last_token.image;
|
1500 |
String name = s.first_token.image;
|
1501 |
s.first_token.image = nameTable.get(name).toString(); |
1502 |
instrNameDBName.put(alias, alias); |
1503 |
} |
1504 |
} else {
|
1505 |
Adapter[] hijos = adapter.getChilds();
|
1506 |
|
1507 |
for (int i = 0; i < hijos.length; i++) { |
1508 |
translateFromTables(hijos[i], instrNameDBName); |
1509 |
} |
1510 |
} |
1511 |
} |
1512 |
|
1513 |
/**
|
1514 |
* Obtiene el DataSource resultado de ejecutar la instrucci?n de union
|
1515 |
*
|
1516 |
* @param instr
|
1517 |
* instrucci?n de union
|
1518 |
* @param mode
|
1519 |
* opening mode
|
1520 |
*
|
1521 |
* @return DataSource
|
1522 |
*
|
1523 |
* @throws DriverException
|
1524 |
* Si fallo la lectura de la fuente de datos por parte del
|
1525 |
* driver
|
1526 |
* @throws IOException
|
1527 |
* Si se produce un error de entrada/salida
|
1528 |
* @throws SemanticException
|
1529 |
* Si la instrucci?n tiene errores sem?nticos
|
1530 |
* @throws EvaluationException
|
1531 |
* If there's any problem during expresion evaluation
|
1532 |
* @throws ParseException
|
1533 |
* If there is a select statement embeeded in the union
|
1534 |
* statement and its parse fails
|
1535 |
*/
|
1536 |
public DataSource createRandomDataSource(UnionAdapter instr, int mode) |
1537 |
throws DriverException, IOException, SemanticException, |
1538 |
EvaluationException, ParseException {
|
1539 |
return getModedDataSource(getDataSource(instr), mode);
|
1540 |
} |
1541 |
|
1542 |
/**
|
1543 |
* Obtiene el DataSource resultado de ejecutar la instrucci?n de union
|
1544 |
*
|
1545 |
* @param instr
|
1546 |
* instrucci?n de union
|
1547 |
*
|
1548 |
* @return DataSource
|
1549 |
*
|
1550 |
* @throws DriverException
|
1551 |
* Si fallo la lectura de la fuente de datos por parte del
|
1552 |
* driver
|
1553 |
* @throws IOException
|
1554 |
* Si se produce un error de entrada/salida
|
1555 |
* @throws SemanticException
|
1556 |
* Si la instrucci?n tiene errores sem?nticos
|
1557 |
* @throws ParseException
|
1558 |
* If there is a select statement embeeded in the union
|
1559 |
* statement and its parse fails
|
1560 |
* @throws EvaluationException
|
1561 |
* If there's any problem during expresion evaluation
|
1562 |
*/
|
1563 |
private DataSource getDataSource(UnionAdapter instr) |
1564 |
throws DriverException, IOException, SemanticException, |
1565 |
ParseException, EvaluationException {
|
1566 |
try {
|
1567 |
Strategy strategy = StrategyManager.getStrategy(instr); |
1568 |
|
1569 |
OperationDataSource ret; |
1570 |
ret = strategy.union(instr); |
1571 |
|
1572 |
ret.setName(getUID()); |
1573 |
nameOperationDataSource.put(ret.getName(), ret); |
1574 |
|
1575 |
return ret;
|
1576 |
} catch (DriverLoadException e) {
|
1577 |
throw new DriverException(e); |
1578 |
} |
1579 |
|
1580 |
} |
1581 |
|
1582 |
/**
|
1583 |
* Creates a DataSource as a result of a custom query
|
1584 |
*
|
1585 |
* @param instr
|
1586 |
* Root node of the adapter tree of the custom query instruction
|
1587 |
* @param mode
|
1588 |
* opening mode
|
1589 |
*
|
1590 |
* @return DataSource with the custom query result
|
1591 |
*
|
1592 |
* @throws SemanticException
|
1593 |
* if there is any semantic error in the instruction
|
1594 |
*/
|
1595 |
public DataSource getDataSource(CustomAdapter instr, int mode) |
1596 |
throws SemanticException {
|
1597 |
return getModedDataSource(getDataSource(instr), mode);
|
1598 |
} |
1599 |
|
1600 |
/**
|
1601 |
* Creates a DataSource as a result of a custom query
|
1602 |
*
|
1603 |
* @param instr
|
1604 |
* Root node of the adapter tree of the custom query instruction
|
1605 |
*
|
1606 |
* @return DataSource with the custom query result
|
1607 |
*
|
1608 |
* @throws SemanticException
|
1609 |
* if there is any semantic error in the instruction
|
1610 |
*/
|
1611 |
private DataSource getDataSource(CustomAdapter instr) |
1612 |
throws SemanticException {
|
1613 |
Strategy strategy = StrategyManager.getStrategy(instr); |
1614 |
|
1615 |
OperationDataSource ret = strategy.custom(instr); |
1616 |
|
1617 |
ret.setName(getUID()); |
1618 |
nameOperationDataSource.put(ret.getName(), ret); |
1619 |
|
1620 |
return ret;
|
1621 |
} |
1622 |
|
1623 |
/**
|
1624 |
* Ejecuta la instrucci?n SQL que se pasa como par?metro obteniendo un
|
1625 |
* DataSource con el resultado de la ejecuci?n
|
1626 |
*
|
1627 |
* @param sql
|
1628 |
* instrucci?n sql que se quiere ejecutar
|
1629 |
* @param mode
|
1630 |
* opening mode
|
1631 |
*
|
1632 |
* @return DataSource con el resultado
|
1633 |
*
|
1634 |
* @throws ParseException
|
1635 |
* Si se produce un error de parse de la instrucci?n
|
1636 |
* @throws DriverLoadException
|
1637 |
* Si no se pueden cargar los drivers
|
1638 |
* @throws DriverException
|
1639 |
* Si se produce un error accediendo a los drivers
|
1640 |
* @throws SemanticException
|
1641 |
* Si la instrucci?n tiene alg?n error sem?ntico
|
1642 |
* @throws IOException
|
1643 |
* Si se produce un error accediendo a las estructuras de datos
|
1644 |
* internas usadas para los c?lculos
|
1645 |
* @throws EvaluationException
|
1646 |
* If there's an error evaluating any expression
|
1647 |
*/
|
1648 |
public DataSource executeSQL(String sql, int mode) throws ParseException, |
1649 |
DriverLoadException, DriverException, SemanticException, |
1650 |
IOException, EvaluationException {
|
1651 |
ByteArrayInputStream bytes = new ByteArrayInputStream(sql.getBytes()); |
1652 |
SQLEngine parser = new SQLEngine(bytes);
|
1653 |
|
1654 |
parser.SQLStatement(); |
1655 |
|
1656 |
Node root = parser.getRootNode(); |
1657 |
Adapter rootAdapter = Utilities.buildTree(root.jjtGetChild(0), sql, |
1658 |
this);
|
1659 |
|
1660 |
Utilities.simplify(rootAdapter);
|
1661 |
|
1662 |
DataSource result = null; |
1663 |
|
1664 |
if (rootAdapter instanceof SelectAdapter) { |
1665 |
result = getDataSource((SelectAdapter) rootAdapter); |
1666 |
} else if (rootAdapter instanceof UnionAdapter) { |
1667 |
result = getDataSource((UnionAdapter) rootAdapter); |
1668 |
} else if (rootAdapter instanceof CustomAdapter) { |
1669 |
result = getDataSource((CustomAdapter) rootAdapter); |
1670 |
} |
1671 |
|
1672 |
// if operation was delegated it isn't a OperationDataSource
|
1673 |
if (result instanceof OperationDataSource) { |
1674 |
((OperationDataSource) result).setSQL(sql); |
1675 |
} |
1676 |
|
1677 |
result.setDataSourceFactory(this);
|
1678 |
|
1679 |
return getModedDataSource(result, mode);
|
1680 |
} |
1681 |
|
1682 |
/**
|
1683 |
* Establece el DriverManager que se usar? para instanciar DataSource's.
|
1684 |
* Este metodo debe ser invocado antes que ning?n otro
|
1685 |
*
|
1686 |
* @param dm
|
1687 |
* El manager que se encarga de cargar los drivers
|
1688 |
*/
|
1689 |
public void setDriverManager(DriverManager dm) { |
1690 |
this.dm = dm;
|
1691 |
} |
1692 |
/**
|
1693 |
* Establece el WriterManager que se usar? para instanciar DataSource's.
|
1694 |
* Este metodo debe ser invocado antes que ning?n otro
|
1695 |
*
|
1696 |
* @param dm
|
1697 |
* El manager que se encarga de cargar los drivers
|
1698 |
*/
|
1699 |
public void setWriterManager(WriterManager wm) { |
1700 |
this.wm = wm;
|
1701 |
} |
1702 |
/**
|
1703 |
* Get's the module with the specified name
|
1704 |
*
|
1705 |
* @param name
|
1706 |
* name of the wanted module
|
1707 |
*
|
1708 |
* @return instance of the module
|
1709 |
*/
|
1710 |
public Object getModule(String name) { |
1711 |
return ms.getModule(name);
|
1712 |
} |
1713 |
|
1714 |
/**
|
1715 |
* Registers a module in the system with the specified name
|
1716 |
*
|
1717 |
* @param name
|
1718 |
* name of the module
|
1719 |
* @param instance
|
1720 |
* module instance
|
1721 |
*/
|
1722 |
public void registerModule(String name, Object instance) { |
1723 |
ms.registerModule(name, instance); |
1724 |
} |
1725 |
|
1726 |
/**
|
1727 |
* Gets a driver manager reference
|
1728 |
*
|
1729 |
* @return DriverManagers.
|
1730 |
*/
|
1731 |
public DriverManager getDriverManager() { |
1732 |
return dm;
|
1733 |
} |
1734 |
/**
|
1735 |
* Gets a writer manager reference
|
1736 |
*
|
1737 |
* @return WriterManagers.
|
1738 |
*/
|
1739 |
public WriterManager getWriterManager() {
|
1740 |
return wm;
|
1741 |
} |
1742 |
/**
|
1743 |
* Sets if this factory will check for delegating instructions at the server
|
1744 |
* (true) or will execute all queries internally (false). By delegating at
|
1745 |
* the server, lots of queries will be defined in the database management
|
1746 |
* system where the execution is delegated. Invoke clearViews to remove all
|
1747 |
* created views.
|
1748 |
*
|
1749 |
* @param b
|
1750 |
*/
|
1751 |
public void setDelegating(boolean b) { |
1752 |
this.delegating = b;
|
1753 |
} |
1754 |
|
1755 |
/**
|
1756 |
* Creates a new table on the specified database
|
1757 |
*
|
1758 |
* @param database
|
1759 |
* name of the database where the table will be created
|
1760 |
* @param pkNames
|
1761 |
* Names of the primary key fields
|
1762 |
* @param names
|
1763 |
* names of the fields
|
1764 |
* @param types
|
1765 |
* types of the fields. Must have the same length than names
|
1766 |
*
|
1767 |
* @return the table name
|
1768 |
*
|
1769 |
* @throws SQLException
|
1770 |
* if the creation fails
|
1771 |
*/
|
1772 |
public String createTable(String database, String[] pkNames, |
1773 |
String[] names, int[] types) throws SQLException { |
1774 |
// Get a name for the table
|
1775 |
String tableName = getUID();
|
1776 |
|
1777 |
// Create the table
|
1778 |
InnerDBUtils.execute(database, InnerDBUtils.getCreateStatementWithPK( |
1779 |
tableName, pkNames, names, types)); |
1780 |
|
1781 |
return tableName;
|
1782 |
} |
1783 |
|
1784 |
/**
|
1785 |
* Frees all resources used during execution
|
1786 |
*
|
1787 |
* @throws SQLException
|
1788 |
* If cannot free internal resources
|
1789 |
* @throws DriverException
|
1790 |
* If drivers cannot free remote resources
|
1791 |
*/
|
1792 |
public void finalize() throws SQLException, DriverException { |
1793 |
finalizeThis(); |
1794 |
} |
1795 |
|
1796 |
public void finalizeThis() { |
1797 |
try {
|
1798 |
clearViews(); |
1799 |
} catch (Exception e) { |
1800 |
e.printStackTrace(); |
1801 |
} |
1802 |
|
1803 |
|
1804 |
try {
|
1805 |
Connection c = java.sql.DriverManager.getConnection(
|
1806 |
"jdbc:hsqldb:file:", "", ""); |
1807 |
Statement st = c.createStatement();
|
1808 |
st.execute("SHUTDOWN");
|
1809 |
st.close(); |
1810 |
c.close(); |
1811 |
} catch (Exception e) { |
1812 |
e.printStackTrace(); |
1813 |
} |
1814 |
|
1815 |
} |
1816 |
|
1817 |
/**
|
1818 |
* Initializes the system.
|
1819 |
*
|
1820 |
* @throws InitializationException
|
1821 |
* If the initialization
|
1822 |
*/
|
1823 |
public void initialize() throws InitializationException { |
1824 |
initialize(".");
|
1825 |
} |
1826 |
|
1827 |
/**
|
1828 |
* Initializes the system
|
1829 |
*
|
1830 |
* @param tempDir
|
1831 |
* temporary directory to write data
|
1832 |
*
|
1833 |
* @throws InitializationException
|
1834 |
* If the initialization fails
|
1835 |
*/
|
1836 |
public void initialize(String tempDir) throws InitializationException { |
1837 |
try {
|
1838 |
this.tempDir = new File(tempDir); |
1839 |
|
1840 |
if (!this.tempDir.exists()) { |
1841 |
this.tempDir.mkdirs();
|
1842 |
} |
1843 |
|
1844 |
Class.forName("org.hsqldb.jdbcDriver"); |
1845 |
} catch (ClassNotFoundException e) { |
1846 |
throw new InitializationException(e); |
1847 |
} |
1848 |
} |
1849 |
|
1850 |
/**
|
1851 |
* Gets the URL of a file in the temporary directory. Does not creates any
|
1852 |
* file
|
1853 |
*
|
1854 |
* @return String
|
1855 |
*/
|
1856 |
public String getTempFile() { |
1857 |
return tempDir.getAbsolutePath() + File.separator + "gdmbs" |
1858 |
+ System.currentTimeMillis();
|
1859 |
} |
1860 |
|
1861 |
/**
|
1862 |
* Information to delete the view on the server: name of the view and the
|
1863 |
* adapter to remove it
|
1864 |
*/
|
1865 |
private class ServerViewInfo { |
1866 |
public DBDataSource adapter;
|
1867 |
|
1868 |
public String viewName; |
1869 |
|
1870 |
/**
|
1871 |
* Crea un nuevo ServerViewInfo.
|
1872 |
*
|
1873 |
* @param ds
|
1874 |
* DOCUMENT ME!
|
1875 |
* @param name
|
1876 |
* DOCUMENT ME!
|
1877 |
*/
|
1878 |
public ServerViewInfo(DBDataSource ds, String name) { |
1879 |
adapter = ds; |
1880 |
viewName = name; |
1881 |
} |
1882 |
} |
1883 |
} |