com.opencloud.slee.resources.cgin

Class EncodedInteger.GenericCodec

java.lang.Object

EncodedInteger.Codec

EncodedInteger.GenericCodec

Enclosing class:

EncodedInteger

public static class EncodedInteger.GenericCodec
extends EncodedInteger.Codec

A generic codec that can encode big- or little-endian values of variable width and signedness.

Constructor Summary

Constructors

Constructor and Description
EncodedInteger.GenericCodec(int minValue, int maxValue, int width, boolean bigEndian, boolean signed)

Method Summary

Methods

Modifier and Type	Method and Description
int	decode(byte[] data, int start, int len) Decode a value from some part of a bytearray
byte[]	encode(int value) Encode the given value to a new bytearray
void	encodeTo(int value, byte[] toArray, int start) Encode the given value to some location in an existing bytearray
void	rangeCheck(int value) Check if a given value is in the encodable range for this codec.

Methods inherited from class EncodedInteger.Codec

decode

Methods inherited from class java.lang.Object

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

Constructor Detail

EncodedInteger.GenericCodec

public EncodedInteger.GenericCodec(int minValue,
                           int maxValue,
                           int width,
                           boolean bigEndian,
                           boolean signed)

Parameters:

minValue - the minimum acceptable value

maxValue - the maximum acceptable value

width - how many bytes to encode to

bigEndian - if true, encode MSB first; if false, encode LSB first

signed - if true, treat the most significant bit as a sign bit when decoding

Method Detail

encode

public byte[] encode(int value)

Description copied from class: EncodedInteger.Codec

Encode the given value to a new bytearray

Specified by:

encode in class EncodedInteger.Codec

Parameters:

value - the value

Returns:

a new bytearray

encodeTo

public void encodeTo(int value,
            byte[] toArray,
            int start)

Description copied from class: EncodedInteger.Codec

Encode the given value to some location in an existing bytearray

Specified by:

encodeTo in class EncodedInteger.Codec

Parameters:

value - the value

toArray - the array to populate

start - the start index to begin encoding at

decode

public int decode(byte[] data,
         int start,
         int len)

Description copied from class: EncodedInteger.Codec

Decode a value from some part of a bytearray

Specified by:

decode in class EncodedInteger.Codec

Parameters:

data - the bytearray

start - where to start decoding

len - how many bytes to decode

rangeCheck

public void rangeCheck(int value)
                throws EncodeException

Description copied from class: EncodedInteger.Codec

Check if a given value is in the encodable range for this codec.

Specified by:

rangeCheck in class EncodedInteger.Codec

Parameters:

value - the value to check

Throws:

EncodeException - if value is out of range