org.graphstream.stream.netstream.packing

Class NetStreamUnpacker

java.lang.Object

org.graphstream.stream.netstream.packing.NetStreamUnpacker

Direct Known Subclasses:

Base64Unpacker

public abstract class NetStreamUnpacker
extends Object

Constructor Summary

Constructors

Constructor and Description
NetStreamUnpacker()

Method Summary

Methods

Modifier and Type	Method and Description
abstract int	sizeOfInt() An unpacker has to be abble to indicated what is the size of an int after being packed.
ByteBuffer	unpackMessage(ByteBuffer buffer) Unpack the given ByteBuffer
abstract ByteBuffer	unpackMessage(ByteBuffer buffer, int startIndex, int endIndex) Unpack the given ByteBuffer from startIndex to endIdex
abstract int	unpackMessageSize(ByteBuffer buffer) Unpacks the data necessary to decode a 4 bytes integer that indicates the size of the following message.

Methods inherited from class java.lang.Object

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

Constructor Detail

NetStreamUnpacker

public NetStreamUnpacker()

Method Detail

sizeOfInt

public abstract int sizeOfInt()

An unpacker has to be abble to indicated what is the size of an int after being packed.

Returns:

unpackMessage

public abstract ByteBuffer unpackMessage(ByteBuffer buffer,
                       int startIndex,
                       int endIndex)

Unpack the given ByteBuffer from startIndex to endIdex

Parameters:

buffer - The buffer to unpack/decode

startIndex - the index at which the decoding starts in the buffer

endIndex - the index at which the decoding stops

Returns:

a ByteBuffer that is the unpacked version of the input one. It may not have the same size.

unpackMessage

public ByteBuffer unpackMessage(ByteBuffer buffer)

Unpack the given ByteBuffer

Parameters:

buffer - The buffer to unpack/decode

Returns:

a ByteBuffer that is the unpacked version of the input one. It may not have the same size.

unpackMessageSize

public abstract int unpackMessageSize(ByteBuffer buffer)

Unpacks the data necessary to decode a 4 bytes integer that indicates the size of the following message. The given buffer's position may be important for the unpacker to work. This method may also change the given bytebuffer's position attribute.

Parameters:

buffer - The byteBuffer who's content has the encoded value of the needed size integer.

Returns: