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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      https://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.dbcp2;
18  
19  import java.sql.Connection;
20  import java.sql.DatabaseMetaData;
21  import java.sql.ResultSet;
22  import java.sql.RowIdLifetime;
23  import java.sql.SQLException;
24  import java.util.Objects;
25  import java.util.concurrent.Callable;
26  
27  /**
28   * <p>
29   * A base delegating implementation of {@link DatabaseMetaData}.
30   * </p>
31   * <p>
32   * Methods that create {@link ResultSet} objects are wrapped to create {@link DelegatingResultSet} objects and the remaining methods simply call the
33   * corresponding method on the "delegate" provided in the constructor.
34   * </p>
35   *
36   * @since 2.0
37   */
38  public class DelegatingDatabaseMetaData implements DatabaseMetaData {
39  
40      /** My delegate {@link DatabaseMetaData} */
41      private final DatabaseMetaData databaseMetaData;
42  
43      /** The connection that created me. **/
44      private final DelegatingConnection<?> connection;
45  
46      /**
47       * Constructs a new instance for the given delegating connection and database meta data.
48       *
49       * @param connection       the delegating connection
50       * @param databaseMetaData the database meta data
51       */
52      public DelegatingDatabaseMetaData(final DelegatingConnection<?> connection, final DatabaseMetaData databaseMetaData) {
53          this.connection = Objects.requireNonNull(connection, "connection");
54          this.databaseMetaData = Objects.requireNonNull(databaseMetaData, "databaseMetaData");
55      }
56  
57      @Override
58      public boolean allProceduresAreCallable() throws SQLException {
59          return getB(databaseMetaData::allProceduresAreCallable);
60      }
61  
62      @Override
63      public boolean allTablesAreSelectable() throws SQLException {
64          return getB(databaseMetaData::allTablesAreSelectable);
65      }
66  
67      @Override
68      public boolean autoCommitFailureClosesAllResultSets() throws SQLException {
69          return getB(databaseMetaData::autoCommitFailureClosesAllResultSets);
70      }
71  
72      @Override
73      public boolean dataDefinitionCausesTransactionCommit() throws SQLException {
74          return getB(databaseMetaData::dataDefinitionCausesTransactionCommit);
75      }
76  
77      @Override
78      public boolean dataDefinitionIgnoredInTransactions() throws SQLException {
79          return getB(databaseMetaData::dataDefinitionIgnoredInTransactions);
80      }
81  
82      @Override
83      public boolean deletesAreDetected(final int type) throws SQLException {
84          return getB(() -> databaseMetaData.deletesAreDetected(type));
85      }
86  
87      @Override
88      public boolean doesMaxRowSizeIncludeBlobs() throws SQLException {
89          return getB(databaseMetaData::doesMaxRowSizeIncludeBlobs);
90      }
91  
92      @Override
93      public boolean generatedKeyAlwaysReturned() throws SQLException {
94          connection.checkOpen();
95          return getB(() -> Jdbc41Bridge.generatedKeyAlwaysReturned(databaseMetaData));
96      }
97  
98      private <T> T get(final Callable<T> s) throws SQLException {
99          return get(s, null);
100     }
101 
102     private <T> T get(final Callable<T> s, final T defaultValue) throws SQLException {
103         try {
104             return s.call();
105         } catch (final Exception e) {
106             if (e instanceof SQLException) {
107                 handleException((SQLException) e);
108             }
109             return defaultValue;
110         }
111     }
112 
113     @Override
114     public ResultSet getAttributes(final String catalog, final String schemaPattern, final String typeNamePattern, final String attributeNamePattern)
115             throws SQLException {
116         return getRS(() -> databaseMetaData.getAttributes(catalog, schemaPattern, typeNamePattern, attributeNamePattern));
117     }
118 
119     private boolean getB(final Callable<Boolean> s) throws SQLException {
120         return get(s, false);
121     }
122 
123     @Override
124     public ResultSet getBestRowIdentifier(final String catalog, final String schema, final String table, final int scope, final boolean nullable)
125             throws SQLException {
126         return getRS(() -> databaseMetaData.getBestRowIdentifier(catalog, schema, table, scope, nullable));
127     }
128 
129     @Override
130     public ResultSet getCatalogs() throws SQLException {
131         return getRS(databaseMetaData::getCatalogs);
132     }
133 
134     @Override
135     public String getCatalogSeparator() throws SQLException {
136         return get(databaseMetaData::getCatalogSeparator);
137     }
138 
139     @Override
140     public String getCatalogTerm() throws SQLException {
141         return get(databaseMetaData::getCatalogTerm);
142     }
143 
144     @Override
145     public ResultSet getClientInfoProperties() throws SQLException {
146         return getRS(databaseMetaData::getClientInfoProperties);
147     }
148 
149     @Override
150     public ResultSet getColumnPrivileges(final String catalog, final String schema, final String table, final String columnNamePattern) throws SQLException {
151         return getRS(() -> databaseMetaData.getColumnPrivileges(catalog, schema, table, columnNamePattern));
152     }
153 
154     @Override
155     public ResultSet getColumns(final String catalog, final String schemaPattern, final String tableNamePattern, final String columnNamePattern)
156             throws SQLException {
157         return getRS(() -> databaseMetaData.getColumns(catalog, schemaPattern, tableNamePattern, columnNamePattern));
158     }
159 
160     @Override
161     public Connection getConnection() throws SQLException {
162         return connection;
163     }
164 
165     @Override
166     public ResultSet getCrossReference(final String parentCatalog, final String parentSchema, final String parentTable, final String foreignCatalog,
167             final String foreignSchema, final String foreignTable) throws SQLException {
168         return getRS(() -> databaseMetaData.getCrossReference(parentCatalog, parentSchema, parentTable, foreignCatalog, foreignSchema, foreignTable));
169     }
170 
171     @Override
172     public int getDatabaseMajorVersion() throws SQLException {
173         return getI(databaseMetaData::getDatabaseMajorVersion);
174     }
175 
176     @Override
177     public int getDatabaseMinorVersion() throws SQLException {
178         return getI(databaseMetaData::getDatabaseMinorVersion);
179     }
180 
181     @Override
182     public String getDatabaseProductName() throws SQLException {
183         return get(databaseMetaData::getDatabaseProductName);
184     }
185 
186     @Override
187     public String getDatabaseProductVersion() throws SQLException {
188         return get(databaseMetaData::getDatabaseProductVersion);
189     }
190 
191     @Override
192     public int getDefaultTransactionIsolation() throws SQLException {
193         return getI(databaseMetaData::getDefaultTransactionIsolation);
194     }
195 
196     /**
197      * Gets the underlying database meta data.
198      *
199      * @return The underlying database meta data.
200      */
201     public DatabaseMetaData getDelegate() {
202         return databaseMetaData;
203     }
204 
205     @Override
206     public int getDriverMajorVersion() {
207         return databaseMetaData.getDriverMajorVersion();
208     }
209 
210     @Override
211     public int getDriverMinorVersion() {
212         return databaseMetaData.getDriverMinorVersion();
213     }
214 
215     @Override
216     public String getDriverName() throws SQLException {
217         return get(databaseMetaData::getDriverName);
218     }
219 
220     @Override
221     public String getDriverVersion() throws SQLException {
222         return get(databaseMetaData::getDriverVersion);
223     }
224 
225     @Override
226     public ResultSet getExportedKeys(final String catalog, final String schema, final String table) throws SQLException {
227         return getRS(() -> databaseMetaData.getExportedKeys(catalog, schema, table));
228     }
229 
230     @Override
231     public String getExtraNameCharacters() throws SQLException {
232         return get(databaseMetaData::getExtraNameCharacters);
233     }
234 
235     @Override
236     public ResultSet getFunctionColumns(final String catalog, final String schemaPattern, final String functionNamePattern, final String columnNamePattern)
237             throws SQLException {
238         return getRS(() -> databaseMetaData.getFunctionColumns(catalog, schemaPattern, functionNamePattern, columnNamePattern));
239     }
240 
241     @Override
242     public ResultSet getFunctions(final String catalog, final String schemaPattern, final String functionNamePattern) throws SQLException {
243         return getRS(() -> databaseMetaData.getFunctions(catalog, schemaPattern, functionNamePattern));
244     }
245 
246     private int getI(final Callable<Integer> s) throws SQLException {
247         return get(s, 0);
248     }
249 
250     @Override
251     public String getIdentifierQuoteString() throws SQLException {
252         return get(databaseMetaData::getIdentifierQuoteString);
253     }
254 
255     @Override
256     public ResultSet getImportedKeys(final String catalog, final String schema, final String table) throws SQLException {
257         return getRS(() -> databaseMetaData.getImportedKeys(catalog, schema, table));
258     }
259 
260     @Override
261     public ResultSet getIndexInfo(final String catalog, final String schema, final String table, final boolean unique, final boolean approximate)
262             throws SQLException {
263         return getRS(() -> databaseMetaData.getIndexInfo(catalog, schema, table, unique, approximate));
264     }
265 
266     /**
267      * If my underlying {@link ResultSet} is not a {@link DelegatingResultSet}, returns it, otherwise recursively invokes this method on my delegate.
268      * <p>
269      * Hence this method will return the first delegate that is not a {@link DelegatingResultSet}, or {@code null} when no non-{@link DelegatingResultSet}
270      * delegate can be found by traversing this chain.
271      * </p>
272      * <p>
273      * This method is useful when you may have nested {@link DelegatingResultSet}s, and you want to make sure to obtain a "genuine" {@link ResultSet}.
274      * </p>
275      *
276      * @return the innermost database meta data.
277      */
278     public DatabaseMetaData getInnermostDelegate() {
279         DatabaseMetaData m = databaseMetaData;
280         while (m instanceof DelegatingDatabaseMetaData) {
281             m = ((DelegatingDatabaseMetaData) m).getDelegate();
282             if (this == m) {
283                 return null;
284             }
285         }
286         return m;
287     }
288 
289     @Override
290     public int getJDBCMajorVersion() throws SQLException {
291         return getI(databaseMetaData::getJDBCMajorVersion);
292     }
293 
294     @Override
295     public int getJDBCMinorVersion() throws SQLException {
296         return getI(databaseMetaData::getJDBCMinorVersion);
297     }
298 
299     private long getL(final Callable<Long> s) throws SQLException {
300         return get(s, 0L);
301     }
302 
303     @Override
304     public int getMaxBinaryLiteralLength() throws SQLException {
305         return getI(databaseMetaData::getMaxBinaryLiteralLength);
306     }
307 
308     @Override
309     public int getMaxCatalogNameLength() throws SQLException {
310         return getI(databaseMetaData::getMaxCatalogNameLength);
311     }
312 
313     @Override
314     public int getMaxCharLiteralLength() throws SQLException {
315         return getI(databaseMetaData::getMaxCharLiteralLength);
316     }
317 
318     @Override
319     public int getMaxColumnNameLength() throws SQLException {
320         return getI(databaseMetaData::getMaxColumnNameLength);
321     }
322 
323     @Override
324     public int getMaxColumnsInGroupBy() throws SQLException {
325         return getI(databaseMetaData::getMaxColumnsInGroupBy);
326     }
327 
328     @Override
329     public int getMaxColumnsInIndex() throws SQLException {
330         return getI(databaseMetaData::getMaxColumnsInIndex);
331     }
332 
333     @Override
334     public int getMaxColumnsInOrderBy() throws SQLException {
335         return getI(databaseMetaData::getMaxColumnsInOrderBy);
336     }
337 
338     @Override
339     public int getMaxColumnsInSelect() throws SQLException {
340         return getI(databaseMetaData::getMaxColumnsInSelect);
341     }
342 
343     @Override
344     public int getMaxColumnsInTable() throws SQLException {
345         return getI(databaseMetaData::getMaxColumnsInTable);
346     }
347 
348     @Override
349     public int getMaxConnections() throws SQLException {
350         return getI(databaseMetaData::getMaxConnections);
351     }
352 
353     @Override
354     public int getMaxCursorNameLength() throws SQLException {
355         return getI(databaseMetaData::getMaxCursorNameLength);
356     }
357 
358     @Override
359     public int getMaxIndexLength() throws SQLException {
360         return getI(databaseMetaData::getMaxIndexLength);
361     }
362 
363     /**
364      * @since 2.5.0
365      */
366     @Override
367     public long getMaxLogicalLobSize() throws SQLException {
368         return getL(databaseMetaData::getMaxLogicalLobSize);
369     }
370 
371     @Override
372     public int getMaxProcedureNameLength() throws SQLException {
373         return getI(databaseMetaData::getMaxProcedureNameLength);
374     }
375 
376     @Override
377     public int getMaxRowSize() throws SQLException {
378         return getI(databaseMetaData::getMaxRowSize);
379     }
380 
381     @Override
382     public int getMaxSchemaNameLength() throws SQLException {
383         return getI(databaseMetaData::getMaxSchemaNameLength);
384     }
385 
386     @Override
387     public int getMaxStatementLength() throws SQLException {
388         return getI(databaseMetaData::getMaxStatementLength);
389     }
390 
391     @Override
392     public int getMaxStatements() throws SQLException {
393         return getI(databaseMetaData::getMaxStatements);
394     }
395 
396     @Override
397     public int getMaxTableNameLength() throws SQLException {
398         return getI(databaseMetaData::getMaxTableNameLength);
399     }
400 
401     @Override
402     public int getMaxTablesInSelect() throws SQLException {
403         return getI(databaseMetaData::getMaxTablesInSelect);
404     }
405 
406     @Override
407     public int getMaxUserNameLength() throws SQLException {
408         return getI(databaseMetaData::getMaxUserNameLength);
409     }
410 
411     @Override
412     public String getNumericFunctions() throws SQLException {
413         return get(databaseMetaData::getNumericFunctions);
414     }
415 
416     @Override
417     public ResultSet getPrimaryKeys(final String catalog, final String schema, final String table) throws SQLException {
418         return getRS(() -> databaseMetaData.getPrimaryKeys(catalog, schema, table));
419     }
420 
421     @Override
422     public ResultSet getProcedureColumns(final String catalog, final String schemaPattern, final String procedureNamePattern, final String columnNamePattern)
423             throws SQLException {
424         return getRS(() -> databaseMetaData.getProcedureColumns(catalog, schemaPattern, procedureNamePattern, columnNamePattern));
425     }
426 
427     @Override
428     public ResultSet getProcedures(final String catalog, final String schemaPattern, final String procedureNamePattern) throws SQLException {
429         return getRS(() -> databaseMetaData.getProcedures(catalog, schemaPattern, procedureNamePattern));
430     }
431 
432     @Override
433     public String getProcedureTerm() throws SQLException {
434         return get(databaseMetaData::getProcedureTerm);
435     }
436 
437     @Override
438     public ResultSet getPseudoColumns(final String catalog, final String schemaPattern, final String tableNamePattern, final String columnNamePattern)
439             throws SQLException {
440         return getRS(() -> Jdbc41Bridge.getPseudoColumns(databaseMetaData, catalog, schemaPattern, tableNamePattern, columnNamePattern));
441     }
442 
443     @Override
444     public int getResultSetHoldability() throws SQLException {
445         return getI(databaseMetaData::getResultSetHoldability);
446     }
447 
448     @Override
449     public RowIdLifetime getRowIdLifetime() throws SQLException {
450         return get(databaseMetaData::getRowIdLifetime);
451     }
452 
453     @SuppressWarnings("resource")
454     private ResultSet getRS(final Callable<ResultSet> s) throws SQLException {
455         connection.checkOpen();
456         return DelegatingResultSet.wrapResultSet(connection, get(s));
457     }
458 
459     @Override
460     public ResultSet getSchemas() throws SQLException {
461         return getRS(databaseMetaData::getSchemas);
462     }
463 
464     @Override
465     public ResultSet getSchemas(final String catalog, final String schemaPattern) throws SQLException {
466         return getRS(() -> databaseMetaData.getSchemas(catalog, schemaPattern));
467     }
468 
469     @Override
470     public String getSchemaTerm() throws SQLException {
471         return get(databaseMetaData::getSchemaTerm);
472     }
473 
474     @Override
475     public String getSearchStringEscape() throws SQLException {
476         return get(databaseMetaData::getSearchStringEscape);
477     }
478 
479     @Override
480     public String getSQLKeywords() throws SQLException {
481         return get(databaseMetaData::getSQLKeywords);
482     }
483 
484     @Override
485     public int getSQLStateType() throws SQLException {
486         return getI(databaseMetaData::getSQLStateType);
487     }
488 
489     @Override
490     public String getStringFunctions() throws SQLException {
491         return get(databaseMetaData::getStringFunctions);
492     }
493 
494     @Override
495     public ResultSet getSuperTables(final String catalog, final String schemaPattern, final String tableNamePattern) throws SQLException {
496         return getRS(() -> databaseMetaData.getSuperTables(catalog, schemaPattern, tableNamePattern));
497     }
498 
499     @Override
500     public ResultSet getSuperTypes(final String catalog, final String schemaPattern, final String typeNamePattern) throws SQLException {
501         return getRS(() -> databaseMetaData.getSuperTypes(catalog, schemaPattern, typeNamePattern));
502     }
503 
504     @Override
505     public String getSystemFunctions() throws SQLException {
506         return get(databaseMetaData::getSystemFunctions);
507     }
508 
509     @Override
510     public ResultSet getTablePrivileges(final String catalog, final String schemaPattern, final String tableNamePattern) throws SQLException {
511         return getRS(() -> databaseMetaData.getTablePrivileges(catalog, schemaPattern, tableNamePattern));
512     }
513 
514     @Override
515     public ResultSet getTables(final String catalog, final String schemaPattern, final String tableNamePattern, final String[] types) throws SQLException {
516         return getRS(() -> databaseMetaData.getTables(catalog, schemaPattern, tableNamePattern, types));
517     }
518 
519     @Override
520     public ResultSet getTableTypes() throws SQLException {
521         return getRS(databaseMetaData::getTableTypes);
522     }
523 
524     @Override
525     public String getTimeDateFunctions() throws SQLException {
526         return get(databaseMetaData::getTimeDateFunctions);
527     }
528 
529     @Override
530     public ResultSet getTypeInfo() throws SQLException {
531         return getRS(databaseMetaData::getTypeInfo);
532     }
533 
534     @Override
535     public ResultSet getUDTs(final String catalog, final String schemaPattern, final String typeNamePattern, final int[] types) throws SQLException {
536         return getRS(() -> databaseMetaData.getUDTs(catalog, schemaPattern, typeNamePattern, types));
537     }
538 
539     @Override
540     public String getURL() throws SQLException {
541         return get(databaseMetaData::getURL);
542     }
543 
544     @Override
545     public String getUserName() throws SQLException {
546         return get(databaseMetaData::getUserName);
547     }
548 
549     @Override
550     public ResultSet getVersionColumns(final String catalog, final String schema, final String table) throws SQLException {
551         return getRS(() -> databaseMetaData.getVersionColumns(catalog, schema, table));
552     }
553 
554     /**
555      * Delegates to the connection's {@link DelegatingConnection#handleException(SQLException)}.
556      *
557      * @param e the exception to throw or delegate.
558      * @throws SQLException the exception to throw.
559      */
560     protected void handleException(final SQLException e) throws SQLException {
561         if (connection == null) {
562             throw e;
563         }
564         connection.handleException(e);
565     }
566 
567     @Override
568     public boolean insertsAreDetected(final int type) throws SQLException {
569         return getB(() -> databaseMetaData.insertsAreDetected(type));
570     }
571 
572     @Override
573     public boolean isCatalogAtStart() throws SQLException {
574         return getB(databaseMetaData::isCatalogAtStart);
575     }
576 
577     @Override
578     public boolean isReadOnly() throws SQLException {
579         return getB(databaseMetaData::isReadOnly);
580     }
581 
582     @Override
583     public boolean isWrapperFor(final Class<?> iface) throws SQLException {
584         if (iface.isAssignableFrom(getClass()) || iface.isAssignableFrom(databaseMetaData.getClass())) {
585             return true;
586         }
587         return databaseMetaData.isWrapperFor(iface);
588     }
589 
590     @Override
591     public boolean locatorsUpdateCopy() throws SQLException {
592         return getB(databaseMetaData::locatorsUpdateCopy);
593     }
594 
595     @Override
596     public boolean nullPlusNonNullIsNull() throws SQLException {
597         return getB(databaseMetaData::nullPlusNonNullIsNull);
598     }
599 
600     @Override
601     public boolean nullsAreSortedAtEnd() throws SQLException {
602         return getB(databaseMetaData::nullsAreSortedAtEnd);
603     }
604 
605     @Override
606     public boolean nullsAreSortedAtStart() throws SQLException {
607         return getB(databaseMetaData::nullsAreSortedAtStart);
608     }
609 
610     @Override
611     public boolean nullsAreSortedHigh() throws SQLException {
612         return getB(databaseMetaData::nullsAreSortedHigh);
613     }
614 
615     @Override
616     public boolean nullsAreSortedLow() throws SQLException {
617         return getB(databaseMetaData::nullsAreSortedLow);
618     }
619 
620     @Override
621     public boolean othersDeletesAreVisible(final int type) throws SQLException {
622         return getB(() -> databaseMetaData.othersDeletesAreVisible(type));
623     }
624 
625     @Override
626     public boolean othersInsertsAreVisible(final int type) throws SQLException {
627         return getB(() -> databaseMetaData.othersInsertsAreVisible(type));
628     }
629 
630     @Override
631     public boolean othersUpdatesAreVisible(final int type) throws SQLException {
632         return getB(() -> databaseMetaData.othersUpdatesAreVisible(type));
633     }
634 
635     @Override
636     public boolean ownDeletesAreVisible(final int type) throws SQLException {
637         return getB(() -> databaseMetaData.ownDeletesAreVisible(type));
638     }
639 
640     @Override
641     public boolean ownInsertsAreVisible(final int type) throws SQLException {
642         return getB(() -> databaseMetaData.ownInsertsAreVisible(type));
643     }
644 
645     @Override
646     public boolean ownUpdatesAreVisible(final int type) throws SQLException {
647         return getB(() -> databaseMetaData.ownUpdatesAreVisible(type));
648     }
649 
650     @Override
651     public boolean storesLowerCaseIdentifiers() throws SQLException {
652         return getB(databaseMetaData::storesLowerCaseIdentifiers);
653     }
654 
655     @Override
656     public boolean storesLowerCaseQuotedIdentifiers() throws SQLException {
657         return getB(databaseMetaData::storesLowerCaseQuotedIdentifiers);
658     }
659 
660     @Override
661     public boolean storesMixedCaseIdentifiers() throws SQLException {
662         return getB(databaseMetaData::storesMixedCaseIdentifiers);
663     }
664 
665     @Override
666     public boolean storesMixedCaseQuotedIdentifiers() throws SQLException {
667         return getB(databaseMetaData::storesMixedCaseQuotedIdentifiers);
668     }
669 
670     @Override
671     public boolean storesUpperCaseIdentifiers() throws SQLException {
672         return getB(databaseMetaData::storesUpperCaseIdentifiers);
673 
674     }
675 
676     @Override
677     public boolean storesUpperCaseQuotedIdentifiers() throws SQLException {
678         return getB(databaseMetaData::storesUpperCaseQuotedIdentifiers);
679     }
680 
681     @Override
682     public boolean supportsAlterTableWithAddColumn() throws SQLException {
683         return getB(databaseMetaData::supportsAlterTableWithAddColumn);
684     }
685 
686     @Override
687     public boolean supportsAlterTableWithDropColumn() throws SQLException {
688         return getB(databaseMetaData::supportsAlterTableWithDropColumn);
689     }
690 
691     @Override
692     public boolean supportsANSI92EntryLevelSQL() throws SQLException {
693         return getB(databaseMetaData::supportsANSI92EntryLevelSQL);
694     }
695 
696     @Override
697     public boolean supportsANSI92FullSQL() throws SQLException {
698         return getB(databaseMetaData::supportsANSI92FullSQL);
699     }
700 
701     @Override
702     public boolean supportsANSI92IntermediateSQL() throws SQLException {
703         return getB(databaseMetaData::supportsANSI92IntermediateSQL);
704     }
705 
706     @Override
707     public boolean supportsBatchUpdates() throws SQLException {
708         return getB(databaseMetaData::supportsBatchUpdates);
709     }
710 
711     @Override
712     public boolean supportsCatalogsInDataManipulation() throws SQLException {
713         return getB(databaseMetaData::supportsCatalogsInDataManipulation);
714     }
715 
716     @Override
717     public boolean supportsCatalogsInIndexDefinitions() throws SQLException {
718         return getB(databaseMetaData::supportsCatalogsInIndexDefinitions);
719     }
720 
721     @Override
722     public boolean supportsCatalogsInPrivilegeDefinitions() throws SQLException {
723         return getB(databaseMetaData::supportsCatalogsInPrivilegeDefinitions);
724     }
725 
726     @Override
727     public boolean supportsCatalogsInProcedureCalls() throws SQLException {
728         return getB(databaseMetaData::supportsCatalogsInProcedureCalls);
729     }
730 
731     @Override
732     public boolean supportsCatalogsInTableDefinitions() throws SQLException {
733         return getB(databaseMetaData::supportsCatalogsInTableDefinitions);
734     }
735 
736     @Override
737     public boolean supportsColumnAliasing() throws SQLException {
738         return getB(databaseMetaData::supportsColumnAliasing);
739     }
740 
741     @Override
742     public boolean supportsConvert() throws SQLException {
743         return getB(databaseMetaData::supportsConvert);
744     }
745 
746     @Override
747     public boolean supportsConvert(final int fromType, final int toType) throws SQLException {
748         return getB(() -> databaseMetaData.supportsConvert(fromType, toType));
749     }
750 
751     @Override
752     public boolean supportsCoreSQLGrammar() throws SQLException {
753         return getB(databaseMetaData::supportsCoreSQLGrammar);
754     }
755 
756     @Override
757     public boolean supportsCorrelatedSubqueries() throws SQLException {
758         return getB(databaseMetaData::supportsCorrelatedSubqueries);
759     }
760 
761     @Override
762     public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLException {
763         return getB(databaseMetaData::supportsDataDefinitionAndDataManipulationTransactions);
764     }
765 
766     @Override
767     public boolean supportsDataManipulationTransactionsOnly() throws SQLException {
768         return getB(databaseMetaData::supportsDataManipulationTransactionsOnly);
769     }
770 
771     @Override
772     public boolean supportsDifferentTableCorrelationNames() throws SQLException {
773         return getB(databaseMetaData::supportsDifferentTableCorrelationNames);
774     }
775 
776     @Override
777     public boolean supportsExpressionsInOrderBy() throws SQLException {
778         return getB(databaseMetaData::supportsExpressionsInOrderBy);
779     }
780 
781     @Override
782     public boolean supportsExtendedSQLGrammar() throws SQLException {
783         return getB(databaseMetaData::supportsExtendedSQLGrammar);
784     }
785 
786     @Override
787     public boolean supportsFullOuterJoins() throws SQLException {
788         return getB(databaseMetaData::supportsFullOuterJoins);
789     }
790 
791     @Override
792     public boolean supportsGetGeneratedKeys() throws SQLException {
793         return getB(databaseMetaData::supportsGetGeneratedKeys);
794     }
795 
796     @Override
797     public boolean supportsGroupBy() throws SQLException {
798         return getB(databaseMetaData::supportsGroupBy);
799     }
800 
801     @Override
802     public boolean supportsGroupByBeyondSelect() throws SQLException {
803         return getB(databaseMetaData::supportsGroupByBeyondSelect);
804     }
805 
806     @Override
807     public boolean supportsGroupByUnrelated() throws SQLException {
808         return getB(databaseMetaData::supportsGroupByUnrelated);
809     }
810 
811     @Override
812     public boolean supportsIntegrityEnhancementFacility() throws SQLException {
813         return getB(databaseMetaData::supportsIntegrityEnhancementFacility);
814     }
815 
816     @Override
817     public boolean supportsLikeEscapeClause() throws SQLException {
818         return getB(databaseMetaData::supportsLikeEscapeClause);
819     }
820 
821     @Override
822     public boolean supportsLimitedOuterJoins() throws SQLException {
823         return getB(databaseMetaData::supportsLimitedOuterJoins);
824     }
825 
826     @Override
827     public boolean supportsMinimumSQLGrammar() throws SQLException {
828         return getB(databaseMetaData::supportsMinimumSQLGrammar);
829     }
830 
831     @Override
832     public boolean supportsMixedCaseIdentifiers() throws SQLException {
833         return getB(databaseMetaData::supportsMixedCaseIdentifiers);
834     }
835 
836     @Override
837     public boolean supportsMixedCaseQuotedIdentifiers() throws SQLException {
838         return getB(databaseMetaData::supportsMixedCaseQuotedIdentifiers);
839     }
840 
841     @Override
842     public boolean supportsMultipleOpenResults() throws SQLException {
843         return getB(databaseMetaData::supportsMultipleOpenResults);
844     }
845 
846     @Override
847     public boolean supportsMultipleResultSets() throws SQLException {
848         return getB(databaseMetaData::supportsMultipleResultSets);
849     }
850 
851     @Override
852     public boolean supportsMultipleTransactions() throws SQLException {
853         return getB(databaseMetaData::supportsMultipleTransactions);
854     }
855 
856     @Override
857     public boolean supportsNamedParameters() throws SQLException {
858         return getB(databaseMetaData::supportsNamedParameters);
859     }
860 
861     @Override
862     public boolean supportsNonNullableColumns() throws SQLException {
863         return getB(databaseMetaData::supportsNonNullableColumns);
864     }
865 
866     @Override
867     public boolean supportsOpenCursorsAcrossCommit() throws SQLException {
868         return getB(databaseMetaData::supportsOpenCursorsAcrossCommit);
869     }
870 
871     @Override
872     public boolean supportsOpenCursorsAcrossRollback() throws SQLException {
873         return getB(databaseMetaData::supportsOpenCursorsAcrossRollback);
874     }
875 
876     @Override
877     public boolean supportsOpenStatementsAcrossCommit() throws SQLException {
878         return getB(databaseMetaData::supportsOpenStatementsAcrossCommit);
879     }
880 
881     @Override
882     public boolean supportsOpenStatementsAcrossRollback() throws SQLException {
883         return getB(databaseMetaData::supportsOpenStatementsAcrossRollback);
884     }
885 
886     @Override
887     public boolean supportsOrderByUnrelated() throws SQLException {
888         return getB(databaseMetaData::supportsOrderByUnrelated);
889     }
890 
891     @Override
892     public boolean supportsOuterJoins() throws SQLException {
893         return getB(databaseMetaData::supportsOuterJoins);
894     }
895 
896     @Override
897     public boolean supportsPositionedDelete() throws SQLException {
898         return getB(databaseMetaData::supportsPositionedDelete);
899     }
900 
901     @Override
902     public boolean supportsPositionedUpdate() throws SQLException {
903         return getB(databaseMetaData::supportsPositionedUpdate);
904     }
905 
906     /**
907      * @since 2.5.0
908      */
909     @Override
910     public boolean supportsRefCursors() throws SQLException {
911         return getB(databaseMetaData::supportsRefCursors);
912     }
913 
914     @Override
915     public boolean supportsResultSetConcurrency(final int type, final int concurrency) throws SQLException {
916         return getB(() -> databaseMetaData.supportsResultSetConcurrency(type, concurrency));
917     }
918 
919     @Override
920     public boolean supportsResultSetHoldability(final int holdability) throws SQLException {
921         return getB(() -> databaseMetaData.supportsResultSetHoldability(holdability));
922     }
923 
924     @Override
925     public boolean supportsResultSetType(final int type) throws SQLException {
926         return getB(() -> databaseMetaData.supportsResultSetType(type));
927     }
928 
929     @Override
930     public boolean supportsSavepoints() throws SQLException {
931         return getB(databaseMetaData::supportsSavepoints);
932     }
933 
934     @Override
935     public boolean supportsSchemasInDataManipulation() throws SQLException {
936         return getB(databaseMetaData::supportsSchemasInDataManipulation);
937     }
938 
939     @Override
940     public boolean supportsSchemasInIndexDefinitions() throws SQLException {
941         return getB(databaseMetaData::supportsSchemasInIndexDefinitions);
942     }
943 
944     @Override
945     public boolean supportsSchemasInPrivilegeDefinitions() throws SQLException {
946         return getB(databaseMetaData::supportsSchemasInPrivilegeDefinitions);
947     }
948 
949     @Override
950     public boolean supportsSchemasInProcedureCalls() throws SQLException {
951         return getB(databaseMetaData::supportsSchemasInProcedureCalls);
952     }
953 
954     @Override
955     public boolean supportsSchemasInTableDefinitions() throws SQLException {
956         return getB(databaseMetaData::supportsSchemasInTableDefinitions);
957     }
958 
959     @Override
960     public boolean supportsSelectForUpdate() throws SQLException {
961         return getB(databaseMetaData::supportsSelectForUpdate);
962     }
963 
964     @Override
965     public boolean supportsStatementPooling() throws SQLException {
966         return getB(databaseMetaData::supportsStatementPooling);
967     }
968 
969     @Override
970     public boolean supportsStoredFunctionsUsingCallSyntax() throws SQLException {
971         return getB(databaseMetaData::supportsStoredFunctionsUsingCallSyntax);
972     }
973 
974     @Override
975     public boolean supportsStoredProcedures() throws SQLException {
976         return getB(databaseMetaData::supportsStoredProcedures);
977     }
978 
979     @Override
980     public boolean supportsSubqueriesInComparisons() throws SQLException {
981         return getB(databaseMetaData::supportsSubqueriesInComparisons);
982     }
983 
984     @Override
985     public boolean supportsSubqueriesInExists() throws SQLException {
986         return getB(databaseMetaData::supportsSubqueriesInExists);
987     }
988 
989     @Override
990     public boolean supportsSubqueriesInIns() throws SQLException {
991         return getB(databaseMetaData::supportsSubqueriesInIns);
992     }
993 
994     @Override
995     public boolean supportsSubqueriesInQuantifieds() throws SQLException {
996         return getB(databaseMetaData::supportsSubqueriesInQuantifieds);
997     }
998 
999     @Override
1000     public boolean supportsTableCorrelationNames() throws SQLException {
1001         return getB(databaseMetaData::supportsTableCorrelationNames);
1002     }
1003 
1004     @Override
1005     public boolean supportsTransactionIsolationLevel(final int level) throws SQLException {
1006         return getB(() -> databaseMetaData.supportsTransactionIsolationLevel(level));
1007     }
1008 
1009     @Override
1010     public boolean supportsTransactions() throws SQLException {
1011         return getB(databaseMetaData::supportsTransactions);
1012     }
1013 
1014     @Override
1015     public boolean supportsUnion() throws SQLException {
1016         return getB(databaseMetaData::supportsUnion);
1017     }
1018 
1019     @Override
1020     public boolean supportsUnionAll() throws SQLException {
1021         return getB(databaseMetaData::supportsUnionAll);
1022     }
1023 
1024     @Override
1025     public <T> T unwrap(final Class<T> iface) throws SQLException {
1026         if (iface.isAssignableFrom(getClass())) {
1027             return iface.cast(this);
1028         }
1029         if (iface.isAssignableFrom(databaseMetaData.getClass())) {
1030             return iface.cast(databaseMetaData);
1031         }
1032         return databaseMetaData.unwrap(iface);
1033     }
1034 
1035     @Override
1036     public boolean updatesAreDetected(final int type) throws SQLException {
1037         return getB(() -> databaseMetaData.updatesAreDetected(type));
1038     }
1039 
1040     @Override
1041     public boolean usesLocalFilePerTable() throws SQLException {
1042         return getB(databaseMetaData::usesLocalFilePerTable);
1043     }
1044 
1045     @Override
1046     public boolean usesLocalFiles() throws SQLException {
1047         return getB(databaseMetaData::usesLocalFiles);
1048     }
1049 }