/
PostgreSQL81Dialect.java
452 lines (378 loc) · 16.1 KB
/
PostgreSQL81Dialect.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.dialect;
import java.sql.CallableStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import org.hibernate.JDBCException;
import org.hibernate.LockOptions;
import org.hibernate.PessimisticLockException;
import org.hibernate.cfg.Environment;
import org.hibernate.dialect.function.NoArgSQLFunction;
import org.hibernate.dialect.function.PositionSubstringFunction;
import org.hibernate.dialect.function.SQLFunctionTemplate;
import org.hibernate.dialect.function.StandardSQLFunction;
import org.hibernate.dialect.function.VarArgsSQLFunction;
import org.hibernate.exception.LockAcquisitionException;
import org.hibernate.exception.spi.SQLExceptionConversionDelegate;
import org.hibernate.exception.spi.TemplatedViolatedConstraintNameExtracter;
import org.hibernate.exception.spi.ViolatedConstraintNameExtracter;
import org.hibernate.id.SequenceGenerator;
import org.hibernate.internal.util.JdbcExceptionHelper;
import org.hibernate.type.StandardBasicTypes;
import org.hibernate.type.descriptor.sql.BlobTypeDescriptor;
import org.hibernate.type.descriptor.sql.ClobTypeDescriptor;
import org.hibernate.type.descriptor.sql.SqlTypeDescriptor;
/**
* An SQL dialect for Postgres
* <p/>
* For discussion of BLOB support in Postgres, as of 8.4, have a peek at
* <a href="http://jdbc.postgresql.org/documentation/84/binary-data.html">http://jdbc.postgresql.org/documentation/84/binary-data.html</a>.
* For the effects in regards to Hibernate see <a href="http://in.relation.to/15492.lace">http://in.relation.to/15492.lace</a>
*
* @author Gavin King
*/
public class PostgreSQL81Dialect extends Dialect {
public PostgreSQL81Dialect() {
super();
registerColumnType( Types.BIT, "bool" );
registerColumnType( Types.BIGINT, "int8" );
registerColumnType( Types.SMALLINT, "int2" );
registerColumnType( Types.TINYINT, "int2" );
registerColumnType( Types.INTEGER, "int4" );
registerColumnType( Types.CHAR, "char(1)" );
registerColumnType( Types.VARCHAR, "varchar($l)" );
registerColumnType( Types.FLOAT, "float4" );
registerColumnType( Types.DOUBLE, "float8" );
registerColumnType( Types.DATE, "date" );
registerColumnType( Types.TIME, "time" );
registerColumnType( Types.TIMESTAMP, "timestamp" );
registerColumnType( Types.VARBINARY, "bytea" );
registerColumnType( Types.BINARY, "bytea" );
registerColumnType( Types.LONGVARCHAR, "text" );
registerColumnType( Types.LONGVARBINARY, "bytea" );
registerColumnType( Types.CLOB, "text" );
registerColumnType( Types.BLOB, "oid" );
registerColumnType( Types.NUMERIC, "numeric($p, $s)" );
registerColumnType( Types.OTHER, "uuid" );
registerFunction( "abs", new StandardSQLFunction("abs") );
registerFunction( "sign", new StandardSQLFunction("sign", StandardBasicTypes.INTEGER) );
registerFunction( "acos", new StandardSQLFunction("acos", StandardBasicTypes.DOUBLE) );
registerFunction( "asin", new StandardSQLFunction("asin", StandardBasicTypes.DOUBLE) );
registerFunction( "atan", new StandardSQLFunction("atan", StandardBasicTypes.DOUBLE) );
registerFunction( "cos", new StandardSQLFunction("cos", StandardBasicTypes.DOUBLE) );
registerFunction( "cot", new StandardSQLFunction("cot", StandardBasicTypes.DOUBLE) );
registerFunction( "exp", new StandardSQLFunction("exp", StandardBasicTypes.DOUBLE) );
registerFunction( "ln", new StandardSQLFunction("ln", StandardBasicTypes.DOUBLE) );
registerFunction( "log", new StandardSQLFunction("log", StandardBasicTypes.DOUBLE) );
registerFunction( "sin", new StandardSQLFunction("sin", StandardBasicTypes.DOUBLE) );
registerFunction( "sqrt", new StandardSQLFunction("sqrt", StandardBasicTypes.DOUBLE) );
registerFunction( "cbrt", new StandardSQLFunction("cbrt", StandardBasicTypes.DOUBLE) );
registerFunction( "tan", new StandardSQLFunction("tan", StandardBasicTypes.DOUBLE) );
registerFunction( "radians", new StandardSQLFunction("radians", StandardBasicTypes.DOUBLE) );
registerFunction( "degrees", new StandardSQLFunction("degrees", StandardBasicTypes.DOUBLE) );
registerFunction( "stddev", new StandardSQLFunction("stddev", StandardBasicTypes.DOUBLE) );
registerFunction( "variance", new StandardSQLFunction("variance", StandardBasicTypes.DOUBLE) );
registerFunction( "random", new NoArgSQLFunction("random", StandardBasicTypes.DOUBLE) );
registerFunction( "round", new StandardSQLFunction("round") );
registerFunction( "trunc", new StandardSQLFunction("trunc") );
registerFunction( "ceil", new StandardSQLFunction("ceil") );
registerFunction( "floor", new StandardSQLFunction("floor") );
registerFunction( "chr", new StandardSQLFunction("chr", StandardBasicTypes.CHARACTER) );
registerFunction( "lower", new StandardSQLFunction("lower") );
registerFunction( "upper", new StandardSQLFunction("upper") );
registerFunction( "substr", new StandardSQLFunction("substr", StandardBasicTypes.STRING) );
registerFunction( "initcap", new StandardSQLFunction("initcap") );
registerFunction( "to_ascii", new StandardSQLFunction("to_ascii") );
registerFunction( "quote_ident", new StandardSQLFunction("quote_ident", StandardBasicTypes.STRING) );
registerFunction( "quote_literal", new StandardSQLFunction("quote_literal", StandardBasicTypes.STRING) );
registerFunction( "md5", new StandardSQLFunction("md5") );
registerFunction( "ascii", new StandardSQLFunction("ascii", StandardBasicTypes.INTEGER) );
registerFunction( "char_length", new StandardSQLFunction("char_length", StandardBasicTypes.LONG) );
registerFunction( "bit_length", new StandardSQLFunction("bit_length", StandardBasicTypes.LONG) );
registerFunction( "octet_length", new StandardSQLFunction("octet_length", StandardBasicTypes.LONG) );
registerFunction( "age", new StandardSQLFunction("age") );
registerFunction( "current_date", new NoArgSQLFunction("current_date", StandardBasicTypes.DATE, false) );
registerFunction( "current_time", new NoArgSQLFunction("current_time", StandardBasicTypes.TIME, false) );
registerFunction( "current_timestamp", new NoArgSQLFunction("current_timestamp", StandardBasicTypes.TIMESTAMP, false) );
registerFunction( "date_trunc", new StandardSQLFunction( "date_trunc", StandardBasicTypes.TIMESTAMP ) );
registerFunction( "localtime", new NoArgSQLFunction("localtime", StandardBasicTypes.TIME, false) );
registerFunction( "localtimestamp", new NoArgSQLFunction("localtimestamp", StandardBasicTypes.TIMESTAMP, false) );
registerFunction( "now", new NoArgSQLFunction("now", StandardBasicTypes.TIMESTAMP) );
registerFunction( "timeofday", new NoArgSQLFunction("timeofday", StandardBasicTypes.STRING) );
registerFunction( "current_user", new NoArgSQLFunction("current_user", StandardBasicTypes.STRING, false) );
registerFunction( "session_user", new NoArgSQLFunction("session_user", StandardBasicTypes.STRING, false) );
registerFunction( "user", new NoArgSQLFunction("user", StandardBasicTypes.STRING, false) );
registerFunction( "current_database", new NoArgSQLFunction("current_database", StandardBasicTypes.STRING, true) );
registerFunction( "current_schema", new NoArgSQLFunction("current_schema", StandardBasicTypes.STRING, true) );
registerFunction( "to_char", new StandardSQLFunction("to_char", StandardBasicTypes.STRING) );
registerFunction( "to_date", new StandardSQLFunction("to_date", StandardBasicTypes.DATE) );
registerFunction( "to_timestamp", new StandardSQLFunction("to_timestamp", StandardBasicTypes.TIMESTAMP) );
registerFunction( "to_number", new StandardSQLFunction("to_number", StandardBasicTypes.BIG_DECIMAL) );
registerFunction( "concat", new VarArgsSQLFunction( StandardBasicTypes.STRING, "(","||",")" ) );
registerFunction( "locate", new PositionSubstringFunction() );
registerFunction( "str", new SQLFunctionTemplate(StandardBasicTypes.STRING, "cast(?1 as varchar)") );
getDefaultProperties().setProperty(Environment.STATEMENT_BATCH_SIZE, DEFAULT_BATCH_SIZE);
getDefaultProperties().setProperty( Environment.NON_CONTEXTUAL_LOB_CREATION, "true" );
}
public String getAddColumnString() {
return "add column";
}
public String getSequenceNextValString(String sequenceName) {
return "select " + getSelectSequenceNextValString( sequenceName );
}
public String getSelectSequenceNextValString(String sequenceName) {
return "nextval ('" + sequenceName + "')";
}
public String getCreateSequenceString(String sequenceName) {
return "create sequence " + sequenceName; //starts with 1, implicitly
}
public String getDropSequenceString(String sequenceName) {
return "drop sequence " + sequenceName;
}
public String getCascadeConstraintsString() {
return " cascade";
}
public boolean dropConstraints() {
return true;
}
public boolean supportsSequences() {
return true;
}
public String getQuerySequencesString() {
return "select relname from pg_class where relkind='S'";
}
public boolean supportsLimit() {
return true;
}
public String getLimitString(String sql, boolean hasOffset) {
return new StringBuilder( sql.length()+20 )
.append( sql )
.append( hasOffset ? " limit ? offset ?" : " limit ?" )
.toString();
}
public boolean bindLimitParametersInReverseOrder() {
return true;
}
public boolean supportsIdentityColumns() {
return true;
}
public String getForUpdateString(String aliases) {
return getForUpdateString() + " of " + aliases;
}
public String getIdentitySelectString(String table, String column, int type) {
return new StringBuilder().append("select currval('")
.append(table)
.append('_')
.append(column)
.append("_seq')")
.toString();
}
public String getIdentityColumnString(int type) {
return type==Types.BIGINT ?
"bigserial not null" :
"serial not null";
}
public boolean hasDataTypeInIdentityColumn() {
return false;
}
public String getNoColumnsInsertString() {
return "default values";
}
public String getCaseInsensitiveLike(){
return "ilike";
}
@Override
public boolean supportsCaseInsensitiveLike() {
return true;
}
public Class getNativeIdentifierGeneratorClass() {
return SequenceGenerator.class;
}
public boolean supportsOuterJoinForUpdate() {
return false;
}
public boolean useInputStreamToInsertBlob() {
return false;
}
public boolean supportsUnionAll() {
return true;
}
/**
* Workaround for postgres bug #1453
*/
public String getSelectClauseNullString(int sqlType) {
String typeName = getTypeName(sqlType, 1, 1, 0);
//trim off the length/precision/scale
int loc = typeName.indexOf('(');
if (loc>-1) {
typeName = typeName.substring(0, loc);
}
return "null::" + typeName;
}
public boolean supportsCommentOn() {
return true;
}
public boolean supportsTemporaryTables() {
return true;
}
public String getCreateTemporaryTableString() {
return "create temporary table";
}
public String getCreateTemporaryTablePostfix() {
return "on commit drop";
}
/*public boolean dropTemporaryTableAfterUse() {
//we have to, because postgres sets current tx
//to rollback only after a failed create table
return true;
}*/
public boolean supportsCurrentTimestampSelection() {
return true;
}
public boolean isCurrentTimestampSelectStringCallable() {
return false;
}
public String getCurrentTimestampSelectString() {
return "select now()";
}
public boolean supportsTupleDistinctCounts() {
return false;
}
public String toBooleanValueString(boolean bool) {
return bool ? "true" : "false";
}
public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter() {
return EXTRACTER;
}
/**
* Constraint-name extractor for Postgres constraint violation exceptions.
* Orginally contributed by Denny Bartelt.
*/
private static ViolatedConstraintNameExtracter EXTRACTER = new TemplatedViolatedConstraintNameExtracter() {
public String extractConstraintName(SQLException sqle) {
try {
int sqlState = Integer.valueOf( JdbcExceptionHelper.extractSqlState( sqle )).intValue();
switch (sqlState) {
// CHECK VIOLATION
case 23514: return extractUsingTemplate("violates check constraint \"","\"", sqle.getMessage());
// UNIQUE VIOLATION
case 23505: return extractUsingTemplate("violates unique constraint \"","\"", sqle.getMessage());
// FOREIGN KEY VIOLATION
case 23503: return extractUsingTemplate("violates foreign key constraint \"","\"", sqle.getMessage());
// NOT NULL VIOLATION
case 23502: return extractUsingTemplate("null value in column \"","\" violates not-null constraint", sqle.getMessage());
// TODO: RESTRICT VIOLATION
case 23001: return null;
// ALL OTHER
default: return null;
}
} catch (NumberFormatException nfe) {
return null;
}
}
};
@Override
public SQLExceptionConversionDelegate buildSQLExceptionConversionDelegate() {
return new SQLExceptionConversionDelegate() {
@Override
public JDBCException convert(SQLException sqlException, String message, String sql) {
final String sqlState = JdbcExceptionHelper.extractSqlState( sqlException );
if ( "40P01".equals( sqlState ) ) { // DEADLOCK DETECTED
return new LockAcquisitionException( message, sqlException, sql );
}
if ( "55P03".equals( sqlState ) ) { // LOCK NOT AVAILABLE
return new PessimisticLockException( message, sqlException, sql );
}
// returning null allows other delegates to operate
return null;
}
};
}
public int registerResultSetOutParameter(CallableStatement statement, int col) throws SQLException {
// Register the type of the out param - PostgreSQL uses Types.OTHER
statement.registerOutParameter(col++, Types.OTHER);
return col;
}
public ResultSet getResultSet(CallableStatement ps) throws SQLException {
ps.execute();
return (ResultSet) ps.getObject(1);
}
public boolean supportsPooledSequences() {
return true;
}
//only necessary for postgre < 7.4
//http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/create_sequence.sgml
protected String getCreateSequenceString(String sequenceName, int initialValue, int incrementSize) {
return getCreateSequenceString( sequenceName ) + " start " + initialValue + " increment " + incrementSize;
}
// Overridden informational metadata ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// seems to not really...
// public boolean supportsRowValueConstructorSyntax() {
// return true;
// }
public boolean supportsEmptyInList() {
return false;
}
@Override
public boolean supportsExpectedLobUsagePattern() {
return true;
}
@Override
public boolean supportsLobValueChangePropogation() {
return false;
}
@Override
public boolean supportsUnboundedLobLocatorMaterialization() {
return false;
}
// locking support
public String getForUpdateString() {
return " for update";
}
public String getWriteLockString(int timeout) {
if ( timeout == LockOptions.NO_WAIT )
return " for update nowait";
else
return " for update";
}
public String getReadLockString(int timeout) {
if ( timeout == LockOptions.NO_WAIT )
return " for share nowait";
else
return " for share";
}
public boolean supportsRowValueConstructorSyntax() {
return true;
}
@Override
public String getForUpdateNowaitString() {
return getForUpdateString() + " nowait ";
}
@Override
public String getForUpdateNowaitString(String aliases) {
return getForUpdateString(aliases) + " nowait ";
}
}