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package io.edurt.datacap.core;

import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;

import java.io.BufferedReader;
import java.io.StringReader;
import java.sql.*;
import java.util.stream.IntStream;

@SuppressFBWarnings(value = {"NP_NONNULL_RETURN_VIOLATION", "OBL_UNSATISFIED_OBLIGATION", "ODR_OPEN_DATABASE_RESOURCE", "SQL_BAD_RESULTSET_ACCESS"},
        justification = "I prefer to suppress these FindBugs warnings")
public class RedisDatabaseMetadata
        implements DatabaseMetaData
{
    private final static Logger LOGGER = new Logger(RedisDatabaseMetadata.class);

    private final RedisConnection connection;
    private final String dbIndex;

    public RedisDatabaseMetadata(RedisConnection connection, String dbIndex)
    {
        this.connection = connection;
        this.dbIndex = dbIndex;
    }

    @Override
    public boolean allProceduresAreCallable()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean allTablesAreSelectable()
            throws SQLException
    {
        return false;
    }

    @Override
    public String getURL()
            throws SQLException
    {
        return null;
    }

    @Override
    public String getUserName()
            throws SQLException
    {
        return null;
    }

    @Override
    public boolean isReadOnly()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean nullsAreSortedHigh()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean nullsAreSortedLow()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean nullsAreSortedAtStart()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean nullsAreSortedAtEnd()
            throws SQLException
    {
        return false;
    }

    @Override
    public String getDatabaseProductName()
            throws SQLException
    {
        return "Redis";
    }

    @Override
    public String getDatabaseProductVersion()
            throws SQLException
    {
        return this.getVersion().getOrigin();
    }

    private ServerVersion getVersion()
            throws SQLException
    {
        Statement statement = connection.createStatement();
        String version = "0.0.1";
        try {
            ResultSet rs = statement.executeQuery("INFO server");
            while (rs.next()) {
                String result = rs.getString(0);
                String versionX = new BufferedReader(new StringReader(result))
                        .lines()
                        .filter(line -> line.startsWith("redis_version"))
                        .findFirst()
                        .map(line -> line.substring(line.indexOf(":") + 1))
                        .orElse(null);
                if (versionX != null) {
                    version = versionX;
                    break;
                }
            }
        }
        catch (Exception e) {
            LOGGER.log("getDatabaseProductVersion exception occurs, " + e.getMessage());
        }
        return new ServerVersion(version);
    }

    @Override
    public String getDriverName()
            throws SQLException
    {
        return "Redis JDBC Connector/J";
    }

    @Override
    public String getDriverVersion()
            throws SQLException
    {
        return "redis-jdbc-driver 1.0.0";
    }

    @Override
    public int getDriverMajorVersion()
    {
        return 1;
    }

    @Override
    public int getDriverMinorVersion()
    {
        return 0;
    }

    @Override
    public boolean usesLocalFiles()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean usesLocalFilePerTable()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsMixedCaseIdentifiers()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean storesUpperCaseIdentifiers()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean storesLowerCaseIdentifiers()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean storesMixedCaseIdentifiers()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsMixedCaseQuotedIdentifiers()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean storesUpperCaseQuotedIdentifiers()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean storesLowerCaseQuotedIdentifiers()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean storesMixedCaseQuotedIdentifiers()
            throws SQLException
    {
        return false;
    }

    @Override
    public String getIdentifierQuoteString()
            throws SQLException
    {
        return null;
    }

    @Override
    public String getSQLKeywords()
            throws SQLException
    {
        return null;
    }

    @Override
    public String getNumericFunctions()
            throws SQLException
    {
        return null;
    }

    @Override
    public String getStringFunctions()
            throws SQLException
    {
        return null;
    }

    @Override
    public String getSystemFunctions()
            throws SQLException
    {
        return null;
    }

    @Override
    public String getTimeDateFunctions()
            throws SQLException
    {
        return null;
    }

    @Override
    public String getSearchStringEscape()
            throws SQLException
    {
        return null;
    }

    @Override
    public String getExtraNameCharacters()
            throws SQLException
    {
        return null;
    }

    @Override
    public boolean supportsAlterTableWithAddColumn()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsAlterTableWithDropColumn()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsColumnAliasing()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean nullPlusNonNullIsNull()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsConvert()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsConvert(int fromType, int toType)
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsTableCorrelationNames()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsDifferentTableCorrelationNames()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsExpressionsInOrderBy()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsOrderByUnrelated()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsGroupBy()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsGroupByUnrelated()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsGroupByBeyondSelect()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsLikeEscapeClause()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsMultipleResultSets()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsMultipleTransactions()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsNonNullableColumns()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsMinimumSQLGrammar()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsCoreSQLGrammar()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsExtendedSQLGrammar()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsANSI92EntryLevelSQL()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsANSI92IntermediateSQL()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsANSI92FullSQL()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsIntegrityEnhancementFacility()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsOuterJoins()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsFullOuterJoins()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsLimitedOuterJoins()
            throws SQLException
    {
        return false;
    }

    @Override
    public String getSchemaTerm()
            throws SQLException
    {
        return "SCHEMA";
    }

    @Override
    public String getProcedureTerm()
            throws SQLException
    {
        return "PROCEDURE";
    }

    @Override
    public String getCatalogTerm()
            throws SQLException
    {
        return "CATALOG";
    }

    @Override
    public boolean isCatalogAtStart()
            throws SQLException
    {
        return false;
    }

    @Override
    public String getCatalogSeparator()
            throws SQLException
    {
        return ".";
    }

    @Override
    public boolean supportsSchemasInDataManipulation()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsSchemasInProcedureCalls()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsSchemasInTableDefinitions()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsSchemasInIndexDefinitions()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsSchemasInPrivilegeDefinitions()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsCatalogsInDataManipulation()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsCatalogsInProcedureCalls()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsCatalogsInTableDefinitions()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsCatalogsInIndexDefinitions()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsCatalogsInPrivilegeDefinitions()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsPositionedDelete()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsPositionedUpdate()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsSelectForUpdate()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsStoredProcedures()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsSubqueriesInComparisons()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsSubqueriesInExists()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsSubqueriesInIns()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsSubqueriesInQuantifieds()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsCorrelatedSubqueries()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsUnion()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsUnionAll()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsOpenCursorsAcrossCommit()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsOpenCursorsAcrossRollback()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsOpenStatementsAcrossCommit()
            throws SQLException
    {
        return false;
    }

    @Override
    public boolean supportsOpenStatementsAcrossRollback()
            throws SQLException
    {
        return false;
    }

    @Override
    public int getMaxBinaryLiteralLength()
            throws SQLException
    {
        return 100;
    }

    @Override
    public int getMaxCharLiteralLength()
            throws SQLException
    {
        return 100;
    }

    @Override
    public int getMaxColumnNameLength()
            throws SQLException
    {
        return 100;
    }

    @Override
    public int getMaxColumnsInGroupBy()
            throws SQLException
    {
        return 100;
    }

    @Override
    public int getMaxColumnsInIndex()
            throws SQLException
    {
        return 100;
    }

    @Override
    public int getMaxColumnsInOrderBy()
            throws SQLException
    {
        return 100;
    }

    @Override
    public int getMaxColumnsInSelect()
            throws SQLException
    {
        return 100;
    }

    @Override
    public int getMaxColumnsInTable()
            throws SQLException
    {
        return 100;
    }

    @Override
    public int getMaxConnections()
            throws SQLException
    {
        return 0;
    }

    @Override
    public int getMaxCursorNameLength()
            throws SQLException
    {
        return 64;
    }

    @Override
    public int getMaxIndexLength()
            throws SQLException
    {
        return 100;
    }

    @Override
    public int getMaxSchemaNameLength()
            throws SQLException
    {
        return 100;
    }

    @Override
    public int getMaxProcedureNameLength()
            throws SQLException
    {
        return 100;
    }

    @Override
    public int getMaxCatalogNameLength()
            throws SQLException
    {
        return 16;
    }

    @Override
    public int getMaxRowSize()
            throws SQLException
    {
        return Integer.MAX_VALUE;
    }

    @Override
    public boolean doesMaxRowSizeIncludeBlobs()
            throws SQLException
    {
        return false;
    }

    @Override
    public int getMaxStatementLength()
            throws SQLException
    {
        return 65535;
    }

    @Override
    public int getMaxStatements()
            throws SQLException
    {
        return 64;
    }

    @Override
    public int getMaxTableNameLength()
            throws SQLException
    {
        return 64;
    }

    @Override
    public int getMaxTablesInSelect()
            throws SQLException
    {
        return 64;
    }

    @Override
    public int getMaxUserNameLength()
            throws SQLException
    {
        return 0;
    }

    @Override
    public int getDefaultTransactionIsolation()
            throws SQLException
    {
        return 0;
    }

    @Override
    public boolean supportsTransactions()
            throws SQLException
    {
        LOGGER.log("supportsTransactions() = false");
        return false;
    }

    @Override
    public boolean supportsTransactionIsolationLevel(int level)
            throws SQLException
    {
        LOGGER.log("supportsTransactionIsolationLevel() = false");
        return false;
    }

    @Override
    public boolean supportsDataDefinitionAndDataManipulationTransactions()
            throws SQLException
    {
        LOGGER.log("supportsDataDefinitionAndDataManipulationTransactions() = false");
        return false;
    }

    @Override
    public boolean supportsDataManipulationTransactionsOnly()
            throws SQLException
    {
        LOGGER.log("supportsDataManipulationTransactionsOnly() = false");
        return false;
    }

    @Override
    public boolean dataDefinitionCausesTransactionCommit()
            throws SQLException
    {
        LOGGER.log("dataDefinitionCausesTransactionCommit() = false");
        return false;
    }

    @Override
    public boolean dataDefinitionIgnoredInTransactions()
            throws SQLException
    {
        LOGGER.log("dataDefinitionIgnoredInTransactions() = false");
        return false;
    }

    @Override
    public ResultSet getProcedures(String catalog, String schemaPattern, String procedureNamePattern)
            throws SQLException
    {
        LOGGER.log("getProcedures()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getProcedureColumns(String catalog, String schemaPattern, String procedureNamePattern, String columnNamePattern)
            throws SQLException
    {
        LOGGER.log("getProcedureColumns()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types)
            throws SQLException
    {
        LOGGER.log("getTables(%s, %s, %s, %s)", catalog, schemaPattern, tableNamePattern, types);
        return new RedisResultSet(new String[] {"haha"}, connection.createStatement());
    }

    @Override
    public ResultSet getSchemas()
            throws SQLException
    {
        LOGGER.log("getSchemas()");
        ResultSet rs;
        Statement statement = connection.createStatement();

        String[] databases = IntStream.range(0, 16)
                .mapToObj(i -> i + "")
                .toArray(String[]::new);
        rs = new RedisResultSet(databases, statement);
        return rs;
    }

    @Override
    public ResultSet getCatalogs()
            throws SQLException
    {
        LOGGER.log("DatabaseMetadata getCatalogs()");
        return new RedisResultSet(new String[0], connection.createStatement());
    }

    @Override
    public ResultSet getTableTypes()
            throws SQLException
    {
        LOGGER.log("getTableTypes()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern)
            throws SQLException
    {
        LOGGER.log("getColumns(%s, %s, %s, %s)", catalog, schemaPattern, tableNamePattern, columnNamePattern);
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getColumnPrivileges(String catalog, String schema, String table, String columnNamePattern)
            throws SQLException
    {
        LOGGER.log("getColumnPrivileges()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getTablePrivileges(String catalog, String schemaPattern, String tableNamePattern)
            throws SQLException
    {
        LOGGER.log("getTablePrivileges()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getBestRowIdentifier(String catalog, String schema, String table, int scope, boolean nullable)
            throws SQLException
    {
        LOGGER.log("getBestRowIdentifier()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getVersionColumns(String catalog, String schema, String table)
            throws SQLException
    {
        LOGGER.log("getVersionColumns()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getPrimaryKeys(String catalog, String schema, String table)
            throws SQLException
    {
        LOGGER.log("getPrimaryKeys()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getImportedKeys(String catalog, String schema, String table)
            throws SQLException
    {
        LOGGER.log("getImportedKeys()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getExportedKeys(String catalog, String schema, String table)
            throws SQLException
    {
        LOGGER.log("getExportedKeys()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getCrossReference(String parentCatalog, String parentSchema, String parentTable, String foreignCatalog, String foreignSchema, String foreignTable)
            throws SQLException
    {
        LOGGER.log("getCrossReference()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getTypeInfo()
            throws SQLException
    {
        LOGGER.log("getTypeInfo()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getIndexInfo(String catalog, String schema, String table, boolean unique, boolean approximate)
            throws SQLException
    {
        LOGGER.log("getIndexInfo()");
        return new EmptyResultSet();
    }

    @Override
    public boolean supportsResultSetType(int type)
            throws SQLException
    {
        LOGGER.log("supportsResultSetType(%s)", type);
        return type == ResultSet.TYPE_FORWARD_ONLY;
    }

    @Override
    public boolean supportsResultSetConcurrency(int type, int concurrency)
            throws SQLException
    {
        LOGGER.log("supportsResultSetConcurrency(%s, concurrency)", type, concurrency);
        return false;
    }

    @Override
    public boolean ownUpdatesAreVisible(int type)
            throws SQLException
    {
        LOGGER.log("ownUpdatesAreVisible(%s)", type);
        return false;
    }

    @Override
    public boolean ownDeletesAreVisible(int type)
            throws SQLException
    {
        LOGGER.log("ownDeletesAreVisible(%s)", type);
        return false;
    }

    @Override
    public boolean ownInsertsAreVisible(int type)
            throws SQLException
    {
        LOGGER.log("ownInsertsAreVisible(%s)", type);
        return false;
    }

    @Override
    public boolean othersUpdatesAreVisible(int type)
            throws SQLException
    {
        LOGGER.log("othersUpdatesAreVisible(%s)", type);
        return false;
    }

    @Override
    public boolean othersDeletesAreVisible(int type)
            throws SQLException
    {
        LOGGER.log("othersDeletesAreVisible(%s)", type);
        return false;
    }

    @Override
    public boolean othersInsertsAreVisible(int type)
            throws SQLException
    {
        LOGGER.log("othersInsertsAreVisible(%s)", type);
        return false;
    }

    @Override
    public boolean updatesAreDetected(int type)
            throws SQLException
    {
        LOGGER.log("updatesAreDetected(%s)", type);
        return false;
    }

    @Override
    public boolean deletesAreDetected(int type)
            throws SQLException
    {
        LOGGER.log("deletesAreDetected(%s)", type);
        return false;
    }

    @Override
    public boolean insertsAreDetected(int type)
            throws SQLException
    {
        LOGGER.log("insertsAreDetected(%s)", type);
        return false;
    }

    @Override
    public boolean supportsBatchUpdates()
            throws SQLException
    {
        LOGGER.log("supportsBatchUpdates()");
        return false;
    }

    @Override
    public ResultSet getUDTs(String catalog, String schemaPattern, String typeNamePattern, int[] types)
            throws SQLException
    {
        LOGGER.log("getUDTs()");
        return new EmptyResultSet();
    }

    @Override
    public Connection getConnection()
            throws SQLException
    {
        LOGGER.log("getConnection()");
        return this.connection;
    }

    @Override
    public boolean supportsSavepoints()
            throws SQLException
    {
        LOGGER.log("supportsSavepoints()");
        return false;
    }

    @Override
    public boolean supportsNamedParameters()
            throws SQLException
    {
        LOGGER.log("supportsNamedParameters()");
        return false;
    }

    @Override
    public boolean supportsMultipleOpenResults()
            throws SQLException
    {
        LOGGER.log("supportsMultipleOpenResults()");
        return false;
    }

    @Override
    public boolean supportsGetGeneratedKeys()
            throws SQLException
    {
        LOGGER.log("supportsGetGeneratedKeys()");
        return false;
    }

    @Override
    public ResultSet getSuperTypes(String catalog, String schemaPattern, String typeNamePattern)
            throws SQLException
    {
        LOGGER.log("getSuperTypes()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getSuperTables(String catalog, String schemaPattern, String tableNamePattern)
            throws SQLException
    {
        LOGGER.log("getSuperTables()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getAttributes(String catalog, String schemaPattern, String typeNamePattern, String attributeNamePattern)
            throws SQLException
    {
        LOGGER.log("getAttributes()");
        return new EmptyResultSet();
    }

    @Override
    public boolean supportsResultSetHoldability(int holdability)
            throws SQLException
    {
        LOGGER.log("supportsResultSetHoldability()");
        return holdability == ResultSet.HOLD_CURSORS_OVER_COMMIT;
    }

    @Override
    public int getResultSetHoldability()
            throws SQLException
    {
        LOGGER.log("getResultSetHoldability()");
        return ResultSet.HOLD_CURSORS_OVER_COMMIT;
    }

    @Override
    public int getDatabaseMajorVersion()
            throws SQLException
    {
        LOGGER.log("getDatabaseMajorVersion()");
        return this.getVersion().getMajor();
    }

    @Override
    public int getDatabaseMinorVersion()
            throws SQLException
    {
        LOGGER.log("getDatabaseMinorVersion()");
        return this.getVersion().getMinor();
    }

    @Override
    public int getJDBCMajorVersion()
            throws SQLException
    {
        LOGGER.log("getJDBCMajorVersion()");
        return 4;
    }

    @Override
    public int getJDBCMinorVersion()
            throws SQLException
    {
        LOGGER.log("getJDBCMinorVersion()");
        return 0;
    }

    @Override
    public int getSQLStateType()
            throws SQLException
    {
        LOGGER.log("getSQLStateType()");
        return DatabaseMetaData.sqlStateSQL;
    }

    @Override
    public boolean locatorsUpdateCopy()
            throws SQLException
    {
        LOGGER.log("locatorsUpdateCopy()");
        return false;
    }

    @Override
    public boolean supportsStatementPooling()
            throws SQLException
    {
        LOGGER.log("supportsStatementPooling()");
        return false;
    }

    @Override
    public RowIdLifetime getRowIdLifetime()
            throws SQLException
    {
        LOGGER.log("getRowIdLifetime()");
        return null;
    }

    @Override
    public ResultSet getSchemas(String catalog, String schemaPattern)
            throws SQLException
    {
        LOGGER.log("getSchemas(%s, %s)", catalog, schemaPattern);
        if (schemaPattern.equals("%")) {
            return this.getSchemas();
        }

        schemaPattern = Utils.isNumber(schemaPattern) ? schemaPattern : dbIndex;

        return new RedisResultSet(new String[] {schemaPattern}, this.connection.createStatement());
    }

    @Override
    public boolean supportsStoredFunctionsUsingCallSyntax()
            throws SQLException
    {
        LOGGER.log("supportsStoredFunctionsUsingCallSyntax()");
        return false;
    }

    @Override
    public boolean autoCommitFailureClosesAllResultSets()
            throws SQLException
    {
        LOGGER.log("autoCommitFailureClosesAllResultSets()");
        return false;
    }

    @Override
    public ResultSet getClientInfoProperties()
            throws SQLException
    {
        LOGGER.log("autoCommitFailureClosesAllResultSets()");
        //TODO https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#setClientInfo-java.lang.String-java.lang.String-
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getFunctions(String catalog, String schemaPattern, String functionNamePattern)
            throws SQLException
    {
        LOGGER.log("getFunctions()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getFunctionColumns(String catalog, String schemaPattern, String functionNamePattern, String columnNamePattern)
            throws SQLException
    {
        LOGGER.log("getFunctionColumns()");
        return new EmptyResultSet();
    }

    @Override
    public ResultSet getPseudoColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern)
            throws SQLException
    {
        LOGGER.log("getPseudoColumns()");
        return new EmptyResultSet();
    }

    @Override
    public boolean generatedKeyAlwaysReturned()
            throws SQLException
    {
        LOGGER.log("generatedKeyAlwaysReturned()");
        return false;
    }

    @Override
    public long getMaxLogicalLobSize()
            throws SQLException
    {
        LOGGER.log("getMaxLogicalLobSize()");
        return DatabaseMetaData.super.getMaxLogicalLobSize();
    }

    @Override
    public boolean supportsRefCursors()
            throws SQLException
    {
        LOGGER.log("supportsRefCursors()");
        return DatabaseMetaData.super.supportsRefCursors();
    }

    @Override
    public  T unwrap(Class iface)
            throws SQLException
    {
        try {
            LOGGER.log("unwrap()");
            return iface.cast(this);
        }
        catch (ClassCastException cce) {
            LOGGER.log("Unable to unwrap to %s", iface);
            throw new SQLException("Unable to unwrap to " + iface);
        }
    }

    @Override
    public boolean isWrapperFor(Class iface)
            throws SQLException
    {
        LOGGER.log("isWrapperFor()");
        return iface.isInstance(this);
    }
}