    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      https://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017package org.apache.commons.dbcp2;
    018
    019import java.sql.Connection;
    020import java.sql.DatabaseMetaData;
    021import java.sql.ResultSet;
    022import java.sql.RowIdLifetime;
    023import java.sql.SQLException;
    024import java.util.Objects;
    025import java.util.concurrent.Callable;
    026
    027/**
    028 * <p>
    029 * A base delegating implementation of {@link DatabaseMetaData}.
    030 * </p>
    031 * <p>
    032 * Methods that create {@link ResultSet} objects are wrapped to create {@link DelegatingResultSet} objects and the remaining methods simply call the
    033 * corresponding method on the "delegate" provided in the constructor.
    034 * </p>
    035 *
    036 * @since 2.0
    037 */
    038public class DelegatingDatabaseMetaData implements DatabaseMetaData {
    039
    040    /** My delegate {@link DatabaseMetaData} */
    041    private final DatabaseMetaData databaseMetaData;
    042
    043    /** The connection that created me. **/
    044    private final DelegatingConnection<?> connection;
    045
    046    /**
    047     * Constructs a new instance for the given delegating connection and database meta data.
    048     *
    049     * @param connection       the delegating connection
    050     * @param databaseMetaData the database meta data
    051     */
    052    public DelegatingDatabaseMetaData(final DelegatingConnection<?> connection, final DatabaseMetaData databaseMetaData) {
    053        this.connection = Objects.requireNonNull(connection, "connection");
    054        this.databaseMetaData = Objects.requireNonNull(databaseMetaData, "databaseMetaData");
    055    }
    056
    057    @Override
    058    public boolean allProceduresAreCallable() throws SQLException {
    059        return getB(databaseMetaData::allProceduresAreCallable);
    060    }
    061
    062    @Override
    063    public boolean allTablesAreSelectable() throws SQLException {
    064        return getB(databaseMetaData::allTablesAreSelectable);
    065    }
    066
    067    @Override
    068    public boolean autoCommitFailureClosesAllResultSets() throws SQLException {
    069        return getB(databaseMetaData::autoCommitFailureClosesAllResultSets);
    070    }
    071
    072    @Override
    073    public boolean dataDefinitionCausesTransactionCommit() throws SQLException {
    074        return getB(databaseMetaData::dataDefinitionCausesTransactionCommit);
    075    }
    076
    077    @Override
    078    public boolean dataDefinitionIgnoredInTransactions() throws SQLException {
    079        return getB(databaseMetaData::dataDefinitionIgnoredInTransactions);
    080    }
    081
    082    @Override
    083    public boolean deletesAreDetected(final int type) throws SQLException {
    084        return getB(() -> databaseMetaData.deletesAreDetected(type));
    085    }
    086
    087    @Override
    088    public boolean doesMaxRowSizeIncludeBlobs() throws SQLException {
    089        return getB(databaseMetaData::doesMaxRowSizeIncludeBlobs);
    090    }
    091
    092    @Override
    093    public boolean generatedKeyAlwaysReturned() throws SQLException {
    094        connection.checkOpen();
    095        return getB(() -> Jdbc41Bridge.generatedKeyAlwaysReturned(databaseMetaData));
    096    }
    097
    098    private <T> T get(final Callable<T> s) throws SQLException {
    099        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}