com.ibm.streams.operator.encoding

Interface BinaryEncoding

public interface BinaryEncoding

Interface to encode and decode Tuples into a binary encoding. Instances of BinaryEncoding are not thread safe. Applications may create an instance for each thread or synchronize access to a BinaryEncoding instance.

Since:

InfoSphere® Streams Version 3.0

Method Summary

Methods

Modifier and Type	Method and Description
Tuple	decodeTuple(java.nio.ByteBuffer buffer) Decode a encoded tuple from buffer and return it as an immutable Tuple.
void	encodeTuple(Tuple tuple, java.nio.ByteBuffer buffer) Encode tuple into buffer using this encoding.
long	getEncodedSize(Tuple tuple) Get the maximum number of bytes required to write out a binary encoded version of a tuple using this encoding.

Method Detail

getEncodedSize

long getEncodedSize(Tuple tuple)

Get the maximum number of bytes required to write out a binary encoded version of a tuple using this encoding.

Parameters:

tuple - Tuple to be encoded.

Returns:

Maximum number of bytes required to encode tuple.

encodeTuple

void encodeTuple(Tuple tuple,
               java.nio.ByteBuffer buffer)

Encode tuple into buffer using this encoding. For tuple to be successfully encoded buffer.remaining() must return at least the number of bytes returned by getEncodedSize(Tuple);

Parameters:

tuple - Tuple to be encoded.

buffer - Buffer to hold encoded tuple.

decodeTuple

Tuple decodeTuple(java.nio.ByteBuffer buffer)

Decode a encoded tuple from buffer and return it as an immutable Tuple.

Parameters:

buffer - Buffer containing encoded tuple.

Returns:

Tuple instance decoded from buffer.