Examples with ValueLob org.h2.value.ValueLob used on opensource projects

Example 1 with ValueLob

use of org.h2.value.ValueLob in project h2database by h2database.

the class Data method writeValue.

/**
 * Append a value.
 *
 * @param v the value
 */
public void writeValue(Value v) {
    int start = pos;
    if (v == ValueNull.INSTANCE) {
        data[pos++] = 0;
        return;
    }
    int type = v.getType();
    switch(type) {
        case Value.BOOLEAN:
            writeByte((byte) (v.getBoolean() ? BOOLEAN_TRUE : BOOLEAN_FALSE));
            break;
        case Value.BYTE:
            writeByte((byte) type);
            writeByte(v.getByte());
            break;
        case Value.SHORT:
            writeByte((byte) type);
            writeShortInt(v.getShort());
            break;
        case Value.ENUM:
        case Value.INT:
            {
                int x = v.getInt();
                if (x < 0) {
                    writeByte((byte) INT_NEG);
                    writeVarInt(-x);
                } else if (x < 16) {
                    writeByte((byte) (INT_0_15 + x));
                } else {
                    writeByte((byte) type);
                    writeVarInt(x);
                }
                break;
            }
        case Value.LONG:
            {
                long x = v.getLong();
                if (x < 0) {
                    writeByte((byte) LONG_NEG);
                    writeVarLong(-x);
                } else if (x < 8) {
                    writeByte((byte) (LONG_0_7 + x));
                } else {
                    writeByte((byte) type);
                    writeVarLong(x);
                }
                break;
            }
        case Value.DECIMAL:
            {
                BigDecimal x = v.getBigDecimal();
                if (BigDecimal.ZERO.equals(x)) {
                    writeByte((byte) DECIMAL_0_1);
                } else if (BigDecimal.ONE.equals(x)) {
                    writeByte((byte) (DECIMAL_0_1 + 1));
                } else {
                    int scale = x.scale();
                    BigInteger b = x.unscaledValue();
                    int bits = b.bitLength();
                    if (bits <= 63) {
                        if (scale == 0) {
                            writeByte((byte) DECIMAL_SMALL_0);
                            writeVarLong(b.longValue());
                        } else {
                            writeByte((byte) DECIMAL_SMALL);
                            writeVarInt(scale);
                            writeVarLong(b.longValue());
                        }
                    } else {
                        writeByte((byte) type);
                        writeVarInt(scale);
                        byte[] bytes = b.toByteArray();
                        writeVarInt(bytes.length);
                        write(bytes, 0, bytes.length);
                    }
                }
                break;
            }
        case Value.TIME:
            if (STORE_LOCAL_TIME) {
                writeByte((byte) LOCAL_TIME);
                ValueTime t = (ValueTime) v;
                long nanos = t.getNanos();
                long millis = nanos / 1_000_000;
                nanos -= millis * 1_000_000;
                writeVarLong(millis);
                writeVarLong(nanos);
            } else {
                writeByte((byte) type);
                writeVarLong(DateTimeUtils.getTimeLocalWithoutDst(v.getTime()));
            }
            break;
        case Value.DATE:
            {
                if (STORE_LOCAL_TIME) {
                    writeByte((byte) LOCAL_DATE);
                    long x = ((ValueDate) v).getDateValue();
                    writeVarLong(x);
                } else {
                    writeByte((byte) type);
                    long x = DateTimeUtils.getTimeLocalWithoutDst(v.getDate());
                    writeVarLong(x / MILLIS_PER_MINUTE);
                }
                break;
            }
        case Value.TIMESTAMP:
            {
                if (STORE_LOCAL_TIME) {
                    writeByte((byte) LOCAL_TIMESTAMP);
                    ValueTimestamp ts = (ValueTimestamp) v;
                    long dateValue = ts.getDateValue();
                    writeVarLong(dateValue);
                    long nanos = ts.getTimeNanos();
                    long millis = nanos / 1_000_000;
                    nanos -= millis * 1_000_000;
                    writeVarLong(millis);
                    writeVarLong(nanos);
                } else {
                    Timestamp ts = v.getTimestamp();
                    writeByte((byte) type);
                    writeVarLong(DateTimeUtils.getTimeLocalWithoutDst(ts));
                    writeVarInt(ts.getNanos() % 1_000_000);
                }
                break;
            }
        case Value.TIMESTAMP_TZ:
            {
                ValueTimestampTimeZone ts = (ValueTimestampTimeZone) v;
                writeByte((byte) type);
                writeVarLong(ts.getDateValue());
                writeVarLong(ts.getTimeNanos());
                writeVarInt(ts.getTimeZoneOffsetMins());
                break;
            }
        case Value.GEOMETRY:
        // fall though
        case Value.JAVA_OBJECT:
            {
                writeByte((byte) type);
                byte[] b = v.getBytesNoCopy();
                int len = b.length;
                writeVarInt(len);
                write(b, 0, len);
                break;
            }
        case Value.BYTES:
            {
                byte[] b = v.getBytesNoCopy();
                int len = b.length;
                if (len < 32) {
                    writeByte((byte) (BYTES_0_31 + len));
                    write(b, 0, len);
                } else {
                    writeByte((byte) type);
                    writeVarInt(len);
                    write(b, 0, len);
                }
                break;
            }
        case Value.UUID:
            {
                writeByte((byte) type);
                ValueUuid uuid = (ValueUuid) v;
                writeLong(uuid.getHigh());
                writeLong(uuid.getLow());
                break;
            }
        case Value.STRING:
            {
                String s = v.getString();
                int len = s.length();
                if (len < 32) {
                    writeByte((byte) (STRING_0_31 + len));
                    writeStringWithoutLength(s, len);
                } else {
                    writeByte((byte) type);
                    writeString(s);
                }
                break;
            }
        case Value.STRING_IGNORECASE:
        case Value.STRING_FIXED:
            writeByte((byte) type);
            writeString(v.getString());
            break;
        case Value.DOUBLE:
            {
                double x = v.getDouble();
                if (x == 1.0d) {
                    writeByte((byte) (DOUBLE_0_1 + 1));
                } else {
                    long d = Double.doubleToLongBits(x);
                    if (d == ValueDouble.ZERO_BITS) {
                        writeByte((byte) DOUBLE_0_1);
                    } else {
                        writeByte((byte) type);
                        writeVarLong(Long.reverse(d));
                    }
                }
                break;
            }
        case Value.FLOAT:
            {
                float x = v.getFloat();
                if (x == 1.0f) {
                    writeByte((byte) (FLOAT_0_1 + 1));
                } else {
                    int f = Float.floatToIntBits(x);
                    if (f == ValueFloat.ZERO_BITS) {
                        writeByte((byte) FLOAT_0_1);
                    } else {
                        writeByte((byte) type);
                        writeVarInt(Integer.reverse(f));
                    }
                }
                break;
            }
        case Value.BLOB:
        case Value.CLOB:
            {
                writeByte((byte) type);
                if (v instanceof ValueLob) {
                    ValueLob lob = (ValueLob) v;
                    lob.convertToFileIfRequired(handler);
                    byte[] small = lob.getSmall();
                    if (small == null) {
                        int t = -1;
                        if (!lob.isLinkedToTable()) {
                            t = -2;
                        }
                        writeVarInt(t);
                        writeVarInt(lob.getTableId());
                        writeVarInt(lob.getObjectId());
                        writeVarLong(lob.getPrecision());
                        writeByte((byte) (lob.isCompressed() ? 1 : 0));
                        if (t == -2) {
                            writeString(lob.getFileName());
                        }
                    } else {
                        writeVarInt(small.length);
                        write(small, 0, small.length);
                    }
                } else {
                    ValueLobDb lob = (ValueLobDb) v;
                    byte[] small = lob.getSmall();
                    if (small == null) {
                        writeVarInt(-3);
                        writeVarInt(lob.getTableId());
                        writeVarLong(lob.getLobId());
                        writeVarLong(lob.getPrecision());
                    } else {
                        writeVarInt(small.length);
                        write(small, 0, small.length);
                    }
                }
                break;
            }
        case Value.ARRAY:
            {
                writeByte((byte) type);
                Value[] list = ((ValueArray) v).getList();
                writeVarInt(list.length);
                for (Value x : list) {
                    writeValue(x);
                }
                break;
            }
        case Value.RESULT_SET:
            {
                writeByte((byte) type);
                try {
                    ResultSet rs = ((ValueResultSet) v).getResultSet();
                    rs.beforeFirst();
                    ResultSetMetaData meta = rs.getMetaData();
                    int columnCount = meta.getColumnCount();
                    writeVarInt(columnCount);
                    for (int i = 0; i < columnCount; i++) {
                        writeString(meta.getColumnName(i + 1));
                        writeVarInt(meta.getColumnType(i + 1));
                        writeVarInt(meta.getPrecision(i + 1));
                        writeVarInt(meta.getScale(i + 1));
                    }
                    while (rs.next()) {
                        writeByte((byte) 1);
                        for (int i = 0; i < columnCount; i++) {
                            int t = DataType.getValueTypeFromResultSet(meta, i + 1);
                            Value val = DataType.readValue(null, rs, i + 1, t);
                            writeValue(val);
                        }
                    }
                    writeByte((byte) 0);
                    rs.beforeFirst();
                } catch (SQLException e) {
                    throw DbException.convert(e);
                }
                break;
            }
        default:
            DbException.throwInternalError("type=" + v.getType());
    }
    if (SysProperties.CHECK2) {
        if (pos - start != getValueLen(v, handler)) {
            throw DbException.throwInternalError("value size error: got " + (pos - start) + " expected " + getValueLen(v, handler));
        }
    }
}

Example 2 with ValueLob

use of org.h2.value.ValueLob in project h2database by h2database.

the class Recover method getSQL.

private String getSQL(String column, Value v) {
    if (v instanceof ValueLob) {
        ValueLob lob = (ValueLob) v;
        byte[] small = lob.getSmall();
        if (small == null) {
            String file = lob.getFileName();
            String type = lob.getType() == Value.BLOB ? "BLOB" : "CLOB";
            if (lob.isCompressed()) {
                dumpLob(file, true);
                file += ".comp";
            }
            return "READ_" + type + "('" + file + ".txt')";
        }
    } else if (v instanceof ValueLobDb) {
        ValueLobDb lob = (ValueLobDb) v;
        byte[] small = lob.getSmall();
        if (small == null) {
            int type = lob.getType();
            long id = lob.getLobId();
            long precision = lob.getPrecision();
            String m;
            String columnType;
            if (type == Value.BLOB) {
                columnType = "BLOB";
                m = "READ_BLOB";
            } else {
                columnType = "CLOB";
                m = "READ_CLOB";
            }
            if (lobMaps) {
                m += "_MAP";
            } else {
                m += "_DB";
            }
            columnTypeMap.put(column, columnType);
            return m + "(" + id + ", " + precision + ")";
        }
    }
    return v.getSQL();
}

Example 3 with ValueLob

use of org.h2.value.ValueLob in project h2database by h2database.

the class Value method convertTo.

/**
 * Compare a value to the specified type.
 *
 * @param targetType the type of the returned value
 * @param precision the precision of the column to convert this value to.
 *        The special constant <code>-1</code> is used to indicate that
 *        the precision plays no role when converting the value
 * @param mode the conversion mode
 * @param column the column (if any), used for to improve the error message if conversion fails
 * @param enumerators the ENUM datatype enumerators (if any),
 *        for dealing with ENUM conversions
 * @return the converted value
 */
public Value convertTo(int targetType, int precision, Mode mode, Object column, String[] enumerators) {
    // converting BLOB to CLOB and vice versa is done in ValueLob
    if (getType() == targetType) {
        return this;
    }
    try {
        // decimal conversion
        switch(targetType) {
            case BOOLEAN:
                {
                    switch(getType()) {
                        case BYTE:
                        case SHORT:
                        case INT:
                        case LONG:
                        case DECIMAL:
                        case DOUBLE:
                        case FLOAT:
                            return ValueBoolean.get(getSignum() != 0);
                        case TIME:
                        case DATE:
                        case TIMESTAMP:
                        case TIMESTAMP_TZ:
                        case BYTES:
                        case JAVA_OBJECT:
                        case UUID:
                        case ENUM:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case BYTE:
                {
                    switch(getType()) {
                        case BOOLEAN:
                            return ValueByte.get(getBoolean() ? (byte) 1 : (byte) 0);
                        case SHORT:
                        case ENUM:
                        case INT:
                            return ValueByte.get(convertToByte(getInt(), column));
                        case LONG:
                            return ValueByte.get(convertToByte(getLong(), column));
                        case DECIMAL:
                            return ValueByte.get(convertToByte(convertToLong(getBigDecimal(), column), column));
                        case DOUBLE:
                            return ValueByte.get(convertToByte(convertToLong(getDouble(), column), column));
                        case FLOAT:
                            return ValueByte.get(convertToByte(convertToLong(getFloat(), column), column));
                        case BYTES:
                            return ValueByte.get((byte) Integer.parseInt(getString(), 16));
                        case TIMESTAMP_TZ:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case SHORT:
                {
                    switch(getType()) {
                        case BOOLEAN:
                            return ValueShort.get(getBoolean() ? (short) 1 : (short) 0);
                        case BYTE:
                            return ValueShort.get(getByte());
                        case ENUM:
                        case INT:
                            return ValueShort.get(convertToShort(getInt(), column));
                        case LONG:
                            return ValueShort.get(convertToShort(getLong(), column));
                        case DECIMAL:
                            return ValueShort.get(convertToShort(convertToLong(getBigDecimal(), column), column));
                        case DOUBLE:
                            return ValueShort.get(convertToShort(convertToLong(getDouble(), column), column));
                        case FLOAT:
                            return ValueShort.get(convertToShort(convertToLong(getFloat(), column), column));
                        case BYTES:
                            return ValueShort.get((short) Integer.parseInt(getString(), 16));
                        case TIMESTAMP_TZ:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case INT:
                {
                    switch(getType()) {
                        case BOOLEAN:
                            return ValueInt.get(getBoolean() ? 1 : 0);
                        case BYTE:
                        case ENUM:
                        case SHORT:
                            return ValueInt.get(getInt());
                        case LONG:
                            return ValueInt.get(convertToInt(getLong(), column));
                        case DECIMAL:
                            return ValueInt.get(convertToInt(convertToLong(getBigDecimal(), column), column));
                        case DOUBLE:
                            return ValueInt.get(convertToInt(convertToLong(getDouble(), column), column));
                        case FLOAT:
                            return ValueInt.get(convertToInt(convertToLong(getFloat(), column), column));
                        case BYTES:
                            return ValueInt.get((int) Long.parseLong(getString(), 16));
                        case TIMESTAMP_TZ:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case LONG:
                {
                    switch(getType()) {
                        case BOOLEAN:
                            return ValueLong.get(getBoolean() ? 1 : 0);
                        case BYTE:
                        case SHORT:
                        case ENUM:
                        case INT:
                            return ValueLong.get(getInt());
                        case DECIMAL:
                            return ValueLong.get(convertToLong(getBigDecimal(), column));
                        case DOUBLE:
                            return ValueLong.get(convertToLong(getDouble(), column));
                        case FLOAT:
                            return ValueLong.get(convertToLong(getFloat(), column));
                        case BYTES:
                            {
                                // parseLong doesn't work for ffffffffffffffff
                                byte[] d = getBytes();
                                if (d.length == 8) {
                                    return ValueLong.get(Bits.readLong(d, 0));
                                }
                                return ValueLong.get(Long.parseLong(getString(), 16));
                            }
                        case TIMESTAMP_TZ:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case DECIMAL:
                {
                    switch(getType()) {
                        case BOOLEAN:
                            return ValueDecimal.get(BigDecimal.valueOf(getBoolean() ? 1 : 0));
                        case BYTE:
                        case SHORT:
                        case ENUM:
                        case INT:
                            return ValueDecimal.get(BigDecimal.valueOf(getInt()));
                        case LONG:
                            return ValueDecimal.get(BigDecimal.valueOf(getLong()));
                        case DOUBLE:
                            {
                                double d = getDouble();
                                if (Double.isInfinite(d) || Double.isNaN(d)) {
                                    throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, "" + d);
                                }
                                return ValueDecimal.get(BigDecimal.valueOf(d));
                            }
                        case FLOAT:
                            {
                                float f = getFloat();
                                if (Float.isInfinite(f) || Float.isNaN(f)) {
                                    throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, "" + f);
                                }
                                // better rounding behavior than BigDecimal.valueOf(f)
                                return ValueDecimal.get(new BigDecimal(Float.toString(f)));
                            }
                        case TIMESTAMP_TZ:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case DOUBLE:
                {
                    switch(getType()) {
                        case BOOLEAN:
                            return ValueDouble.get(getBoolean() ? 1 : 0);
                        case BYTE:
                        case SHORT:
                        case INT:
                            return ValueDouble.get(getInt());
                        case LONG:
                            return ValueDouble.get(getLong());
                        case DECIMAL:
                            return ValueDouble.get(getBigDecimal().doubleValue());
                        case FLOAT:
                            return ValueDouble.get(getFloat());
                        case ENUM:
                        case TIMESTAMP_TZ:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case FLOAT:
                {
                    switch(getType()) {
                        case BOOLEAN:
                            return ValueFloat.get(getBoolean() ? 1 : 0);
                        case BYTE:
                        case SHORT:
                        case INT:
                            return ValueFloat.get(getInt());
                        case LONG:
                            return ValueFloat.get(getLong());
                        case DECIMAL:
                            return ValueFloat.get(getBigDecimal().floatValue());
                        case DOUBLE:
                            return ValueFloat.get((float) getDouble());
                        case ENUM:
                        case TIMESTAMP_TZ:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case DATE:
                {
                    switch(getType()) {
                        case TIME:
                            // this will be the result
                            return ValueDate.fromDateValue(DateTimeUtils.EPOCH_DATE_VALUE);
                        case TIMESTAMP:
                            return ValueDate.fromDateValue(((ValueTimestamp) this).getDateValue());
                        case TIMESTAMP_TZ:
                            {
                                ValueTimestampTimeZone ts = (ValueTimestampTimeZone) this;
                                long dateValue = ts.getDateValue(), timeNanos = ts.getTimeNanos();
                                long millis = DateTimeUtils.getMillis(dateValue, timeNanos, ts.getTimeZoneOffsetMins());
                                return ValueDate.fromMillis(millis);
                            }
                        case ENUM:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case TIME:
                {
                    switch(getType()) {
                        case DATE:
                            // has the time set to 0, the result will be 0
                            return ValueTime.fromNanos(0);
                        case TIMESTAMP:
                            return ValueTime.fromNanos(((ValueTimestamp) this).getTimeNanos());
                        case TIMESTAMP_TZ:
                            {
                                ValueTimestampTimeZone ts = (ValueTimestampTimeZone) this;
                                long dateValue = ts.getDateValue(), timeNanos = ts.getTimeNanos();
                                long millis = DateTimeUtils.getMillis(dateValue, timeNanos, ts.getTimeZoneOffsetMins());
                                return ValueTime.fromNanos(DateTimeUtils.nanosFromDate(millis) + timeNanos % 1_000_000);
                            }
                        case ENUM:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case TIMESTAMP:
                {
                    switch(getType()) {
                        case TIME:
                            return DateTimeUtils.normalizeTimestamp(0, ((ValueTime) this).getNanos());
                        case DATE:
                            return ValueTimestamp.fromDateValueAndNanos(((ValueDate) this).getDateValue(), 0);
                        case TIMESTAMP_TZ:
                            {
                                ValueTimestampTimeZone ts = (ValueTimestampTimeZone) this;
                                long dateValue = ts.getDateValue(), timeNanos = ts.getTimeNanos();
                                long millis = DateTimeUtils.getMillis(dateValue, timeNanos, ts.getTimeZoneOffsetMins());
                                return ValueTimestamp.fromMillisNanos(millis, (int) (timeNanos % 1_000_000));
                            }
                        case ENUM:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case TIMESTAMP_TZ:
                {
                    switch(getType()) {
                        case TIME:
                            {
                                ValueTimestamp ts = DateTimeUtils.normalizeTimestamp(0, ((ValueTime) this).getNanos());
                                return DateTimeUtils.timestampTimeZoneFromLocalDateValueAndNanos(ts.getDateValue(), ts.getTimeNanos());
                            }
                        case DATE:
                            return DateTimeUtils.timestampTimeZoneFromLocalDateValueAndNanos(((ValueDate) this).getDateValue(), 0);
                        case TIMESTAMP:
                            {
                                ValueTimestamp ts = (ValueTimestamp) this;
                                return DateTimeUtils.timestampTimeZoneFromLocalDateValueAndNanos(ts.getDateValue(), ts.getTimeNanos());
                            }
                        case ENUM:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case BYTES:
                {
                    switch(getType()) {
                        case JAVA_OBJECT:
                        case BLOB:
                            return ValueBytes.getNoCopy(getBytesNoCopy());
                        case UUID:
                        case GEOMETRY:
                            return ValueBytes.getNoCopy(getBytes());
                        case BYTE:
                            return ValueBytes.getNoCopy(new byte[] { getByte() });
                        case SHORT:
                            {
                                int x = getShort();
                                return ValueBytes.getNoCopy(new byte[] { (byte) (x >> 8), (byte) x });
                            }
                        case INT:
                            {
                                byte[] b = new byte[4];
                                Bits.writeInt(b, 0, getInt());
                                return ValueBytes.getNoCopy(b);
                            }
                        case LONG:
                            {
                                byte[] b = new byte[8];
                                Bits.writeLong(b, 0, getLong());
                                return ValueBytes.getNoCopy(b);
                            }
                        case ENUM:
                        case TIMESTAMP_TZ:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case JAVA_OBJECT:
                {
                    switch(getType()) {
                        case BYTES:
                        case BLOB:
                            return ValueJavaObject.getNoCopy(null, getBytesNoCopy(), getDataHandler());
                        case ENUM:
                        case TIMESTAMP_TZ:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case ENUM:
                {
                    switch(getType()) {
                        case BYTE:
                        case SHORT:
                        case INT:
                        case LONG:
                        case DECIMAL:
                            return ValueEnum.get(enumerators, getInt());
                        case STRING:
                        case STRING_IGNORECASE:
                        case STRING_FIXED:
                            return ValueEnum.get(enumerators, getString());
                        case JAVA_OBJECT:
                            Object object = JdbcUtils.deserialize(getBytesNoCopy(), getDataHandler());
                            if (object instanceof String) {
                                return ValueEnum.get(enumerators, (String) object);
                            } else if (object instanceof Integer) {
                                return ValueEnum.get(enumerators, (int) object);
                            }
                        // $FALL-THROUGH$
                        default:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                }
            case BLOB:
                {
                    switch(getType()) {
                        case BYTES:
                            return ValueLobDb.createSmallLob(Value.BLOB, getBytesNoCopy());
                        case TIMESTAMP_TZ:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case UUID:
                {
                    switch(getType()) {
                        case BYTES:
                            return ValueUuid.get(getBytesNoCopy());
                        case JAVA_OBJECT:
                            Object object = JdbcUtils.deserialize(getBytesNoCopy(), getDataHandler());
                            if (object instanceof java.util.UUID) {
                                return ValueUuid.get((java.util.UUID) object);
                            }
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                        case TIMESTAMP_TZ:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
            case GEOMETRY:
                {
                    switch(getType()) {
                        case BYTES:
                            return ValueGeometry.get(getBytesNoCopy());
                        case JAVA_OBJECT:
                            Object object = JdbcUtils.deserialize(getBytesNoCopy(), getDataHandler());
                            if (DataType.isGeometry(object)) {
                                return ValueGeometry.getFromGeometry(object);
                            }
                        // $FALL-THROUGH$
                        case TIMESTAMP_TZ:
                            throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, getString());
                    }
                    break;
                }
        }
        // conversion by parsing the string value
        String s = getString();
        switch(targetType) {
            case NULL:
                return ValueNull.INSTANCE;
            case BOOLEAN:
                {
                    if (s.equalsIgnoreCase("true") || s.equalsIgnoreCase("t") || s.equalsIgnoreCase("yes") || s.equalsIgnoreCase("y")) {
                        return ValueBoolean.TRUE;
                    } else if (s.equalsIgnoreCase("false") || s.equalsIgnoreCase("f") || s.equalsIgnoreCase("no") || s.equalsIgnoreCase("n")) {
                        return ValueBoolean.FALSE;
                    } else {
                        // convert to a number, and if it is not 0 then it is true
                        return ValueBoolean.get(new BigDecimal(s).signum() != 0);
                    }
                }
            case BYTE:
                return ValueByte.get(Byte.parseByte(s.trim()));
            case SHORT:
                return ValueShort.get(Short.parseShort(s.trim()));
            case INT:
                return ValueInt.get(Integer.parseInt(s.trim()));
            case LONG:
                return ValueLong.get(Long.parseLong(s.trim()));
            case DECIMAL:
                return ValueDecimal.get(new BigDecimal(s.trim()));
            case TIME:
                return ValueTime.parse(s.trim());
            case DATE:
                return ValueDate.parse(s.trim());
            case TIMESTAMP:
                return ValueTimestamp.parse(s.trim(), mode);
            case TIMESTAMP_TZ:
                return ValueTimestampTimeZone.parse(s.trim());
            case BYTES:
                return ValueBytes.getNoCopy(StringUtils.convertHexToBytes(s.trim()));
            case JAVA_OBJECT:
                return ValueJavaObject.getNoCopy(null, StringUtils.convertHexToBytes(s.trim()), getDataHandler());
            case STRING:
                return ValueString.get(s);
            case STRING_IGNORECASE:
                return ValueStringIgnoreCase.get(s);
            case STRING_FIXED:
                return ValueStringFixed.get(s, precision, mode);
            case DOUBLE:
                return ValueDouble.get(Double.parseDouble(s.trim()));
            case FLOAT:
                return ValueFloat.get(Float.parseFloat(s.trim()));
            case CLOB:
                return ValueLobDb.createSmallLob(CLOB, s.getBytes(StandardCharsets.UTF_8));
            case BLOB:
                return ValueLobDb.createSmallLob(BLOB, StringUtils.convertHexToBytes(s.trim()));
            case ARRAY:
                return ValueArray.get(new Value[] { ValueString.get(s) });
            case RESULT_SET:
                {
                    SimpleResultSet rs = new SimpleResultSet();
                    rs.setAutoClose(false);
                    rs.addColumn("X", Types.VARCHAR, s.length(), 0);
                    rs.addRow(s);
                    return ValueResultSet.get(rs);
                }
            case UUID:
                return ValueUuid.get(s);
            case GEOMETRY:
                return ValueGeometry.get(s);
            default:
                if (JdbcUtils.customDataTypesHandler != null) {
                    return JdbcUtils.customDataTypesHandler.convert(this, targetType);
                }
                throw DbException.throwInternalError("type=" + targetType);
        }
    } catch (NumberFormatException e) {
        throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, e, getString());
    }
}