Package org.firebirdsql.gds.ng.jna

Class LittleEndianDatatypeCoder

java.lang.Object

org.firebirdsql.gds.ng.DefaultDatatypeCoder

org.firebirdsql.gds.ng.jna.LittleEndianDatatypeCoder

All Implemented Interfaces:

DatatypeCoder

public final class LittleEndianDatatypeCoder
extends DefaultDatatypeCoder

Datatype encoder and decoder for little endian platforms, specifically for use with the Firebird client library.

For wire protocol use DefaultDatatypeCoder.

Since:

3.0

Author:

Mark Rotteveel

Nested Class Summary

Nested classes/interfaces inherited from interface org.firebirdsql.gds.ng.DatatypeCoder

DatatypeCoder.RawDateTimeStruct

Field Summary

Fields inherited from interface org.firebirdsql.gds.ng.DatatypeCoder

FRACTIONS_PER_HOUR, FRACTIONS_PER_MILLISECOND, FRACTIONS_PER_MINUTE, FRACTIONS_PER_SECOND, NANOSECONDS_PER_FRACTION

Constructor Summary

Constructors

Constructor	Description
LittleEndianDatatypeCoder(IEncodingFactory encodingFactory)	Creates a little-endian datatype coder for native access on little-endian platforms.

Method Summary

Modifier and Type	Method	Description
Decimal128	decodeDecimal128(byte[] data)	Decodes a decimal128 from byte array.
Decimal64	decodeDecimal64(byte[] data)	Decodes a decimal64 from byte array.
int	decodeInt(byte[] byte_int)	Decode a byte array into an int value.
int	decodeInt(byte[] bytes, int fromIndex)	Decode a byte array to an int value.
java.math.BigInteger	decodeInt128(byte[] data)	Decodes a BigInteger from byte array.
long	decodeLong(byte[] byte_int)	Decode a byte array into a long value.
short	decodeShort(byte[] byte_int)	Decode a byte array into a short value.
short	decodeShort(byte[] bytes, int fromIndex)	Decode from a byte array to a short value.
byte[]	encodeDecimal128(Decimal128 decimal128)	Encodes a decimal128 to a byte array.
byte[]	encodeDecimal64(Decimal64 decimal64)	Encodes a decimal64 to a byte array.
byte[]	encodeInt(int value)	Encode an int value as a byte array.
void	encodeInt(int value, byte[] target, int fromIndex)	Encode an int value into the target byte array starting at index fromIndex.
byte[]	encodeInt128(java.math.BigInteger bigInteger)	Encodes a BigInteger to a 16-byte byte array.
byte[]	encodeLong(long value)	Encode a long value as a byte array.
void	encodeShort(int value, byte[] target, int fromIndex)	Encode a short value into the target byte array starting at index fromIndex.
byte[]	encodeShort(short value)	Encode a short value as a byte array.
static LittleEndianDatatypeCoder	forEncodingFactory(IEncodingFactory encodingFactory)	Returns an instance of LittleEndianDatatypeCoder for an encoding factory.
int	sizeOfShort()	The size of an encoded short in this data type coder.

Methods inherited from class org.firebirdsql.gds.ng.DefaultDatatypeCoder

createReader, createWriter, decodeBoolean, decodeDate, decodeDateCalendar, decodeDateRaw, decodeDouble, decodeFloat, decodeLocalDate, decodeLocalDateTime, decodeLocalTime, decodeString, decodeTime, decodeTimeCalendar, decodeTimeRaw, decodeTimestamp, decodeTimestampCalendar, decodeTimestampRaw, encodeBoolean, encodeDate, encodeDateCalendar, encodeDateRaw, encodeDouble, encodeFloat, encodeLocalDate, encodeLocalDateTime, encodeLocalTime, encodeShort, encodeString, encodeTime, encodeTimeCalendar, encodeTimeRaw, encodeTimestamp, encodeTimestampCalendar, encodeTimestampRaw, equals, forEncodingDefinition, getEncoding, getEncodingDefinition, getEncodingFactory, hashCode, intToBytes, unwrap

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LittleEndianDatatypeCoder

public LittleEndianDatatypeCoder(IEncodingFactory encodingFactory)

Creates a little-endian datatype coder for native access on little-endian platforms.

In almost all cases, it is better to use forEncodingFactory(IEncodingFactory).

Parameters:

encodingFactory - Encoding factory

Method Detail

forEncodingFactory

public static LittleEndianDatatypeCoder forEncodingFactory(IEncodingFactory encodingFactory)

Returns an instance of LittleEndianDatatypeCoder for an encoding factory.

Parameters:

encodingFactory - Encoding factory

Returns:

Datatype coder, this might be a cached instance

sizeOfShort

public int sizeOfShort()

Description copied from interface: DatatypeCoder

The size of an encoded short in this data type coder.

Specified by:

sizeOfShort in interface DatatypeCoder

Overrides:

sizeOfShort in class DefaultDatatypeCoder

Returns:

The size of an encoded short (either 2 or 4 bytes)

encodeShort

public byte[] encodeShort(short value)

Description copied from interface: DatatypeCoder

Encode a short value as a byte array.

Specified by:

encodeShort in interface DatatypeCoder

Overrides:

encodeShort in class DefaultDatatypeCoder

Parameters:

value - The value to be encoded

Returns:

The value of value encoded as a byte array

See Also:

DatatypeCoder.encodeShort(int)

encodeShort

public void encodeShort(int value,
                        byte[] target,
                        int fromIndex)

Description copied from interface: DatatypeCoder

Encode a short value into the target byte array starting at index fromIndex.

Specified by:

encodeShort in interface DatatypeCoder

Overrides:

encodeShort in class DefaultDatatypeCoder

Parameters:

value - The value to be encoded

target - Target byte array of sufficient size (warning: this may be datatype coder specific)

fromIndex - Index to start writing

decodeShort

public short decodeShort(byte[] byte_int)

Description copied from interface: DatatypeCoder

Decode a byte array into a short value.

Specified by:

decodeShort in interface DatatypeCoder

Overrides:

decodeShort in class DefaultDatatypeCoder

Parameters:

byte_int - The byte array to be decoded

Returns:

The short value of the decoded byte array

decodeShort

public short decodeShort(byte[] bytes,
                         int fromIndex)

Description copied from interface: DatatypeCoder

Decode from a byte array to a short value.

Specified by:

decodeShort in interface DatatypeCoder

Overrides:

decodeShort in class DefaultDatatypeCoder

Parameters:

bytes - The byte array to be decoded

fromIndex - The index to start reading

Returns:

The short value of the decoded byte array

encodeInt

public byte[] encodeInt(int value)

Description copied from interface: DatatypeCoder

Encode an int value as a byte array.

Specified by:

encodeInt in interface DatatypeCoder

Overrides:

encodeInt in class DefaultDatatypeCoder

Parameters:

value - The value to be encoded

Returns:

The value of value encoded as a byte array

encodeInt

public void encodeInt(int value,
                      byte[] target,
                      int fromIndex)

Description copied from interface: DatatypeCoder

Encode an int value into the target byte array starting at index fromIndex.

Specified by:

encodeInt in interface DatatypeCoder

Overrides:

encodeInt in class DefaultDatatypeCoder

Parameters:

value - The value to be encoded

target - Target byte array of sufficient size

fromIndex - Index to start writing

decodeInt

public int decodeInt(byte[] byte_int)

Description copied from interface: DatatypeCoder

Decode a byte array into an int value.

Specified by:

decodeInt in interface DatatypeCoder

Overrides:

decodeInt in class DefaultDatatypeCoder

Parameters:

byte_int - The byte array to be decoded

Returns:

The int value of the decoded byte array

decodeInt

public int decodeInt(byte[] bytes,
                     int fromIndex)

Description copied from interface: DatatypeCoder

Decode a byte array to an int value.

Specified by:

decodeInt in interface DatatypeCoder

Overrides:

decodeInt in class DefaultDatatypeCoder

Parameters:

bytes - The byte array to be decoded

fromIndex - The index to start reading

Returns:

The int value of the decoded byte array

encodeLong

public byte[] encodeLong(long value)

Description copied from interface: DatatypeCoder

Encode a long value as a byte array.

Specified by:

encodeLong in interface DatatypeCoder

Overrides:

encodeLong in class DefaultDatatypeCoder

Parameters:

value - The value to be encoded

Returns:

The value of value encoded as a byte array

decodeLong

public long decodeLong(byte[] byte_int)

Description copied from interface: DatatypeCoder

Decode a byte array into a long value.

Specified by:

decodeLong in interface DatatypeCoder

Overrides:

decodeLong in class DefaultDatatypeCoder

Parameters:

byte_int - The byte array to be decoded

Returns:

The long value of the decoded byte array

decodeDecimal64

public Decimal64 decodeDecimal64(byte[] data)

Description copied from interface: DatatypeCoder

Decodes a decimal64 from byte array.

Specified by:

decodeDecimal64 in interface DatatypeCoder

Overrides:

decodeDecimal64 in class DefaultDatatypeCoder

Parameters:

data - Data to decode (expected 8 bytes)

Returns:

Decimal64 value

encodeDecimal64

public byte[] encodeDecimal64(Decimal64 decimal64)

Description copied from interface: DatatypeCoder

Encodes a decimal64 to a byte array.

Specified by:

encodeDecimal64 in interface DatatypeCoder

Overrides:

encodeDecimal64 in class DefaultDatatypeCoder

Parameters:

decimal64 - The decimal64 value to be encoded

Returns:

Byte array for decimal64 value

decodeDecimal128

public Decimal128 decodeDecimal128(byte[] data)

Description copied from interface: DatatypeCoder

Decodes a decimal128 from byte array.

Specified by:

decodeDecimal128 in interface DatatypeCoder

Overrides:

decodeDecimal128 in class DefaultDatatypeCoder

Parameters:

data - Data to decode (expected 16 bytes)

Returns:

Decimal128 value

encodeDecimal128

public byte[] encodeDecimal128(Decimal128 decimal128)

Description copied from interface: DatatypeCoder

Encodes a decimal128 to a byte array.

Specified by:

encodeDecimal128 in interface DatatypeCoder

Overrides:

encodeDecimal128 in class DefaultDatatypeCoder

Parameters:

decimal128 - The decimal128 value to be encoded

Returns:

Byte array for decimal128 value

decodeInt128

public java.math.BigInteger decodeInt128(byte[] data)

Description copied from interface: DatatypeCoder

Decodes a BigInteger from byte array.

Specified by:

decodeInt128 in interface DatatypeCoder

Overrides:

decodeInt128 in class DefaultDatatypeCoder

Parameters:

data - Data to decode (expected 16 bytes)

Returns:

BigInteger value

encodeInt128

public byte[] encodeInt128(java.math.BigInteger bigInteger)

Description copied from interface: DatatypeCoder

Encodes a BigInteger to a 16-byte byte array.

The implementation expects to be passed a value that fits in 16 bytes. If a larger value is passed, and IllegalArgumentException is thrown.

Specified by:

encodeInt128 in interface DatatypeCoder

Overrides:

encodeInt128 in class DefaultDatatypeCoder

Parameters:

bigInteger - The BigInteger value to be encoded

Returns:

Byte array for bigInteger value