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Example 6 with VARBINARY

use of io.trino.spi.type.VarbinaryType.VARBINARY in project trino by trinodb.

the class MySqlClient method toColumnMapping.

@Override
public Optional<ColumnMapping> toColumnMapping(ConnectorSession session, Connection connection, JdbcTypeHandle typeHandle) {
    String jdbcTypeName = typeHandle.getJdbcTypeName().orElseThrow(() -> new TrinoException(JDBC_ERROR, "Type name is missing: " + typeHandle));
    Optional<ColumnMapping> mapping = getForcedMappingToVarchar(typeHandle);
    if (mapping.isPresent()) {
        return mapping;
    }
    switch(jdbcTypeName.toLowerCase(ENGLISH)) {
        case "tinyint unsigned":
            return Optional.of(smallintColumnMapping());
        case "smallint unsigned":
            return Optional.of(integerColumnMapping());
        case "int unsigned":
            return Optional.of(bigintColumnMapping());
        case "bigint unsigned":
            return Optional.of(decimalColumnMapping(createDecimalType(20)));
        case "json":
            return Optional.of(jsonColumnMapping());
    }
    switch(typeHandle.getJdbcType()) {
        case Types.BIT:
            return Optional.of(booleanColumnMapping());
        case Types.TINYINT:
            return Optional.of(tinyintColumnMapping());
        case Types.SMALLINT:
            return Optional.of(smallintColumnMapping());
        case Types.INTEGER:
            return Optional.of(integerColumnMapping());
        case Types.BIGINT:
            return Optional.of(bigintColumnMapping());
        case Types.REAL:
            // attempts to treat them as exact in comparisons may lead to problems
            return Optional.of(ColumnMapping.longMapping(REAL, (resultSet, columnIndex) -> floatToRawIntBits(resultSet.getFloat(columnIndex)), realWriteFunction(), DISABLE_PUSHDOWN));
        case Types.DOUBLE:
            return Optional.of(doubleColumnMapping());
        case Types.NUMERIC:
        case Types.DECIMAL:
            int decimalDigits = typeHandle.getDecimalDigits().orElseThrow(() -> new IllegalStateException("decimal digits not present"));
            int precision = typeHandle.getRequiredColumnSize();
            if (getDecimalRounding(session) == ALLOW_OVERFLOW && precision > Decimals.MAX_PRECISION) {
                int scale = min(decimalDigits, getDecimalDefaultScale(session));
                return Optional.of(decimalColumnMapping(createDecimalType(Decimals.MAX_PRECISION, scale), getDecimalRoundingMode(session)));
            }
            // TODO does mysql support negative scale?
            // Map decimal(p, -s) (negative scale) to decimal(p+s, 0).
            precision = precision + max(-decimalDigits, 0);
            if (precision > Decimals.MAX_PRECISION) {
                break;
            }
            return Optional.of(decimalColumnMapping(createDecimalType(precision, max(decimalDigits, 0))));
        case Types.CHAR:
            return Optional.of(defaultCharColumnMapping(typeHandle.getRequiredColumnSize(), false));
        // TODO not all these type constants are necessarily used by the JDBC driver
        case Types.VARCHAR:
        case Types.NVARCHAR:
        case Types.LONGVARCHAR:
        case Types.LONGNVARCHAR:
            return Optional.of(defaultVarcharColumnMapping(typeHandle.getRequiredColumnSize(), false));
        case Types.BINARY:
        case Types.VARBINARY:
        case Types.LONGVARBINARY:
            return Optional.of(ColumnMapping.sliceMapping(VARBINARY, varbinaryReadFunction(), varbinaryWriteFunction(), FULL_PUSHDOWN));
        case Types.DATE:
            return Optional.of(dateColumnMappingUsingLocalDate());
        case Types.TIME:
            TimeType timeType = createTimeType(getTimePrecision(typeHandle.getRequiredColumnSize()));
            return Optional.of(timeColumnMapping(timeType));
        case Types.TIMESTAMP:
            TimestampType timestampType = createTimestampType(getTimestampPrecision(typeHandle.getRequiredColumnSize()));
            return Optional.of(timestampColumnMapping(timestampType));
    }
    if (getUnsupportedTypeHandling(session) == CONVERT_TO_VARCHAR) {
        return mapToUnboundedVarchar(typeHandle);
    }
    return Optional.empty();
}
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Example 7 with VARBINARY

use of io.trino.spi.type.VarbinaryType.VARBINARY in project trino by trinodb.

the class OracleClient method toColumnMapping.

@Override
public Optional<ColumnMapping> toColumnMapping(ConnectorSession session, Connection connection, JdbcTypeHandle typeHandle) {
    String jdbcTypeName = typeHandle.getJdbcTypeName().orElseThrow(() -> new TrinoException(JDBC_ERROR, "Type name is missing: " + typeHandle));
    Optional<ColumnMapping> mappingToVarchar = getForcedMappingToVarchar(typeHandle);
    if (mappingToVarchar.isPresent()) {
        return mappingToVarchar;
    }
    if (jdbcTypeName.equalsIgnoreCase("date")) {
        return Optional.of(ColumnMapping.longMapping(TIMESTAMP_SECONDS, oracleTimestampReadFunction(), trinoTimestampToOracleDateWriteFunction(), FULL_PUSHDOWN));
    }
    switch(typeHandle.getJdbcType()) {
        case Types.SMALLINT:
            return Optional.of(ColumnMapping.longMapping(SMALLINT, ResultSet::getShort, smallintWriteFunction(), FULL_PUSHDOWN));
        case OracleTypes.BINARY_FLOAT:
            return Optional.of(ColumnMapping.longMapping(REAL, (resultSet, columnIndex) -> floatToRawIntBits(resultSet.getFloat(columnIndex)), oracleRealWriteFunction(), FULL_PUSHDOWN));
        case OracleTypes.BINARY_DOUBLE:
        case OracleTypes.FLOAT:
            return Optional.of(ColumnMapping.doubleMapping(DOUBLE, ResultSet::getDouble, oracleDoubleWriteFunction(), FULL_PUSHDOWN));
        case OracleTypes.NUMBER:
            int actualPrecision = typeHandle.getRequiredColumnSize();
            int decimalDigits = typeHandle.getRequiredDecimalDigits();
            // Map negative scale to decimal(p+s, 0).
            int precision = actualPrecision + max(-decimalDigits, 0);
            int scale = max(decimalDigits, 0);
            Optional<Integer> numberDefaultScale = getNumberDefaultScale(session);
            RoundingMode roundingMode = getNumberRoundingMode(session);
            if (precision < scale) {
                if (roundingMode == RoundingMode.UNNECESSARY) {
                    break;
                }
                scale = min(Decimals.MAX_PRECISION, scale);
                precision = scale;
            } else if (numberDefaultScale.isPresent() && precision == PRECISION_OF_UNSPECIFIED_NUMBER) {
                precision = Decimals.MAX_PRECISION;
                scale = numberDefaultScale.get();
            } else if (precision > Decimals.MAX_PRECISION || actualPrecision <= 0) {
                break;
            }
            DecimalType decimalType = createDecimalType(precision, scale);
            // JDBC driver can return BigDecimal with lower scale than column's scale when there are trailing zeroes
            if (decimalType.isShort()) {
                return Optional.of(ColumnMapping.longMapping(decimalType, shortDecimalReadFunction(decimalType, roundingMode), shortDecimalWriteFunction(decimalType), FULL_PUSHDOWN));
            }
            return Optional.of(ColumnMapping.objectMapping(decimalType, longDecimalReadFunction(decimalType, roundingMode), longDecimalWriteFunction(decimalType), FULL_PUSHDOWN));
        case OracleTypes.CHAR:
        case OracleTypes.NCHAR:
            CharType charType = createCharType(typeHandle.getRequiredColumnSize());
            return Optional.of(ColumnMapping.sliceMapping(charType, charReadFunction(charType), oracleCharWriteFunction(), FULL_PUSHDOWN));
        case OracleTypes.VARCHAR:
        case OracleTypes.NVARCHAR:
            return Optional.of(ColumnMapping.sliceMapping(createVarcharType(typeHandle.getRequiredColumnSize()), (varcharResultSet, varcharColumnIndex) -> utf8Slice(varcharResultSet.getString(varcharColumnIndex)), varcharWriteFunction(), FULL_PUSHDOWN));
        case OracleTypes.CLOB:
        case OracleTypes.NCLOB:
            return Optional.of(ColumnMapping.sliceMapping(createUnboundedVarcharType(), (resultSet, columnIndex) -> utf8Slice(resultSet.getString(columnIndex)), varcharWriteFunction(), DISABLE_PUSHDOWN));
        // Oracle's RAW(n)
        case OracleTypes.VARBINARY:
        case OracleTypes.BLOB:
            return Optional.of(ColumnMapping.sliceMapping(VARBINARY, (resultSet, columnIndex) -> wrappedBuffer(resultSet.getBytes(columnIndex)), varbinaryWriteFunction(), DISABLE_PUSHDOWN));
        case OracleTypes.TIMESTAMP:
            return Optional.of(ColumnMapping.longMapping(TIMESTAMP_MILLIS, oracleTimestampReadFunction(), trinoTimestampToOracleTimestampWriteFunction(), FULL_PUSHDOWN));
        case OracleTypes.TIMESTAMPTZ:
            return Optional.of(oracleTimestampWithTimeZoneColumnMapping());
    }
    if (getUnsupportedTypeHandling(session) == CONVERT_TO_VARCHAR) {
        return mapToUnboundedVarchar(typeHandle);
    }
    return Optional.empty();
}
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JdbcJoinCondition(io.trino.plugin.jdbc.JdbcJoinCondition) JdbcColumnHandle(io.trino.plugin.jdbc.JdbcColumnHandle) StandardColumnMappings.integerWriteFunction(io.trino.plugin.jdbc.StandardColumnMappings.integerWriteFunction) DISABLE_PUSHDOWN(io.trino.plugin.jdbc.PredicatePushdownController.DISABLE_PUSHDOWN) DateTimeFormatter(java.time.format.DateTimeFormatter) StandardColumnMappings.shortDecimalReadFunction(io.trino.plugin.jdbc.StandardColumnMappings.shortDecimalReadFunction) RoundingMode(java.math.RoundingMode) OracleSessionProperties.getNumberRoundingMode(io.trino.plugin.oracle.OracleSessionProperties.getNumberRoundingMode) TrinoException(io.trino.spi.TrinoException) DecimalType.createDecimalType(io.trino.spi.type.DecimalType.createDecimalType) DecimalType(io.trino.spi.type.DecimalType) CharType.createCharType(io.trino.spi.type.CharType.createCharType) CharType(io.trino.spi.type.CharType) ColumnMapping(io.trino.plugin.jdbc.ColumnMapping)

Aggregations

BIGINT (io.trino.spi.type.BigintType.BIGINT)7 VARBINARY (io.trino.spi.type.VarbinaryType.VARBINARY)7 List (java.util.List)7 Map (java.util.Map)7 Optional (java.util.Optional)7 ImmutableList (com.google.common.collect.ImmutableList)6 ImmutableMap (com.google.common.collect.ImmutableMap)6 BOOLEAN (io.trino.spi.type.BooleanType.BOOLEAN)6 Type (io.trino.spi.type.Type)6 ImmutableSet (com.google.common.collect.ImmutableSet)5 DATE (io.trino.spi.type.DateType.DATE)5 DecimalType (io.trino.spi.type.DecimalType)5 INTEGER (io.trino.spi.type.IntegerType.INTEGER)5 SMALLINT (io.trino.spi.type.SmallintType.SMALLINT)5 VarcharType (io.trino.spi.type.VarcharType)5 VARCHAR (io.trino.spi.type.VarcharType.VARCHAR)4 Set (java.util.Set)4 Slices.utf8Slice (io.airlift.slice.Slices.utf8Slice)3 Session (io.trino.Session)3 TableHandle (io.trino.metadata.TableHandle)3