org.apache.derby.impl.drda
Class SignedBinary

java.lang.Object
  org.apache.derby.impl.drda.SignedBinary

 class SignedBinary
extends java.lang.Object

Converters from signed binary bytes to Java short, int, or long.

Field Summary

static int	BIG_ENDIAN AS/400, Unix, System/390 byte-order for signed binary representations.
static int	LITTLE_ENDIAN Intel 80/86 reversed byte-order for signed binary representations.

Constructor Summary

private

SignedBinary()

Method Summary

static int	bigEndianBytesToInt(byte[] buffer, int offset) Build a Java int from a 4-byte big endian signed binary representation.
static long	bigEndianBytesToLong(byte[] buffer, int offset) Build a Java long from an 8-byte big endian signed binary representation.
static short	bigEndianBytesToShort(byte[] buffer, int offset) Build a Java short from a 2-byte big endian signed binary representation.
static int	getInt(byte[] buffer, int offset, int byteOrder) Build a Java int from a 4-byte signed binary representation.
static long	getLong(byte[] buffer, int offset, int byteOrder) Build a Java long from an 8-byte signed binary representation.
static short	getShort(byte[] buffer, int offset, int byteOrder) Build a Java short from a 2-byte signed binary representation.
static int	littleEndianBytesToInt(byte[] buffer, int offset) Build a Java int from a 4-byte little endian signed binary representation.
static long	littleEndianBytesToLong(byte[] buffer, int offset) Build a Java long from an 8-byte little endian signed binary representation.
static short	littleEndianBytesToShort(byte[] buffer, int offset) Build a Java short from a 2-byte little endian signed binary representation.

Methods inherited from class java.lang.Object

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

Field Detail

BIG_ENDIAN

public static final int BIG_ENDIAN

AS/400, Unix, System/390 byte-order for signed binary representations.

See Also:

Constant Field Values

LITTLE_ENDIAN

public static final int LITTLE_ENDIAN

Intel 80/86 reversed byte-order for signed binary representations.

See Also:

Constant Field Values

Constructor Detail

SignedBinary

private SignedBinary()

Method Detail

getShort

public static short getShort(byte[] buffer,
                             int offset,
                             int byteOrder)

Build a Java short from a 2-byte signed binary representation.

Depending on machine type, byte orders are BIG_ENDIAN for signed binary integers, and LITTLE_ENDIAN for pc8087 signed binary integers.

Throws:

java.lang.IllegalArgumentException - if the specified byte order is not recognized.

getInt

public static int getInt(byte[] buffer,
                         int offset,
                         int byteOrder)

Build a Java int from a 4-byte signed binary representation.

Depending on machine type, byte orders are BIG_ENDIAN for signed binary integers, and LITTLE_ENDIAN for pc8087 signed binary integers.

Throws:

java.lang.IllegalArgumentException - if the specified byte order is not recognized.

getLong

public static long getLong(byte[] buffer,
                           int offset,
                           int byteOrder)

Build a Java long from an 8-byte signed binary representation.

Depending on machine type, byte orders are BIG_ENDIAN for signed binary integers, and LITTLE_ENDIAN for pc8087 signed binary integers.

Throws:

java.lang.IllegalArgumentException - if the specified byte order is not recognized.

bigEndianBytesToShort

public static short bigEndianBytesToShort(byte[] buffer,
                                          int offset)

Build a Java short from a 2-byte big endian signed binary representation.

littleEndianBytesToShort

public static short littleEndianBytesToShort(byte[] buffer,
                                             int offset)

Build a Java short from a 2-byte little endian signed binary representation.

bigEndianBytesToInt

public static int bigEndianBytesToInt(byte[] buffer,
                                      int offset)

Build a Java int from a 4-byte big endian signed binary representation.

littleEndianBytesToInt

public static int littleEndianBytesToInt(byte[] buffer,
                                         int offset)

Build a Java int from a 4-byte little endian signed binary representation.

bigEndianBytesToLong

public static long bigEndianBytesToLong(byte[] buffer,
                                        int offset)

Build a Java long from an 8-byte big endian signed binary representation.

littleEndianBytesToLong

public static long littleEndianBytesToLong(byte[] buffer,
                                           int offset)

Build a Java long from an 8-byte little endian signed binary representation.