public static NativeType relDataTypeToNative()

in modules/sql-engine/src/main/java/org/apache/ignite/internal/sql/engine/type/IgniteTypeFactory.java [206:279]
69 lines of code
41 McCabe index (conditional complexity)

    public static NativeType relDataTypeToNative(RelDataType relType) {
        assert relType instanceof BasicSqlType
                || relType instanceof IntervalSqlType
                || relType instanceof IgniteCustomType : "Not supported:" + relType;

        switch (relType.getSqlTypeName()) {
            case BOOLEAN:
                return NativeTypes.BOOLEAN;
            case TINYINT:
                return NativeTypes.INT8;
            case SMALLINT:
                return NativeTypes.INT16;
            case INTEGER:
                return NativeTypes.INT32;
            case BIGINT:
                return NativeTypes.INT64;
            case DECIMAL:
                assert relType.getPrecision() != PRECISION_NOT_SPECIFIED;

                return NativeTypes.decimalOf(relType.getPrecision(), relType.getScale());
            case FLOAT:
            case REAL:
                return NativeTypes.FLOAT;
            case DOUBLE:
                return NativeTypes.DOUBLE;
            case DATE:
                return NativeTypes.DATE;
            case TIME:
            case TIME_WITH_LOCAL_TIME_ZONE:
                return relType.getPrecision() == PRECISION_NOT_SPECIFIED ? NativeTypes.time() :
                        NativeTypes.time(relType.getPrecision());
            case TIMESTAMP:
                return relType.getPrecision() == PRECISION_NOT_SPECIFIED ? NativeTypes.datetime() :
                        NativeTypes.datetime(relType.getPrecision());
            case TIMESTAMP_WITH_LOCAL_TIME_ZONE:
                return relType.getPrecision() == PRECISION_NOT_SPECIFIED ? NativeTypes.timestamp() :
                        NativeTypes.timestamp(relType.getPrecision());
            case INTERVAL_YEAR:
            case INTERVAL_YEAR_MONTH:
            case INTERVAL_MONTH:
                //TODO: https://issues.apache.org/jira/browse/IGNITE-17373
                throw new IllegalArgumentException("Type is not supported yet: " + relType);
            case INTERVAL_DAY:
            case INTERVAL_DAY_HOUR:
            case INTERVAL_DAY_MINUTE:
            case INTERVAL_DAY_SECOND:
            case INTERVAL_HOUR:
            case INTERVAL_HOUR_MINUTE:
            case INTERVAL_HOUR_SECOND:
            case INTERVAL_MINUTE:
            case INTERVAL_MINUTE_SECOND:
            case INTERVAL_SECOND:
                //TODO: https://issues.apache.org/jira/browse/IGNITE-17373
                throw new IllegalArgumentException("Type is not supported yet:" + relType);
            case VARCHAR:
            case CHAR:
                return relType.getPrecision() == PRECISION_NOT_SPECIFIED
                        ? NativeTypes.stringOf(Integer.MAX_VALUE)
                        : NativeTypes.stringOf(relType.getPrecision());
            case BINARY:
            case VARBINARY:
                return relType.getPrecision() == PRECISION_NOT_SPECIFIED
                        ? NativeTypes.blobOf(Integer.MAX_VALUE)
                        : NativeTypes.blobOf(relType.getPrecision());
            case ANY:
                if (relType instanceof IgniteCustomType) {
                    var customType = (IgniteCustomType) relType;
                    return customType.spec().nativeType();
                }
                // fallthrough
            default:
                throw new IllegalArgumentException("Type is not supported: " + relType);
        }
    }