Package com.ibm.streams.operator.encoding
See: Description
-
Interface Summary Interface Description BinaryEncoding Interface to encode and decode Tuples into a binary encoding.CharacterEncoding Interface to encode and decode Tuples into a character encoding.JSONEncoding<O extends java.util.Map,A extends java.util.List> Interface to encode Tuples into JSON (JavaScript Object Notation) data structures. -
Class Summary Class Description EncodingFactory Factory methods to get encoding classes forTuple
objects.
Package com.ibm.streams.operator.encoding Description
Binary Tuple Representations
SPL non-NBF native binary encoding
SPL native binary encoding of tuples is
described in the SPL Binary Encoding section of the
SPL Compiler Usage Reference. This format may be used
to serialize tuples that may be later consumed by
a C++ operator, such as writing them to a file for later processing.
Since the format is native, tuples must be encoded and decoded on
a platform architecture with the same byte order. For Java the byte
order is defined by java.nio.ByteOrder.nativeOrder()
.
The byte representation of encoded tuples
is compatible with the encoding provided by
the C++ SPL Operator API SPL::Tuple
functions
serialize(NativeByteBuffer)
and
deserialize(NativeByteBuffer)
.
An instance of BinaryEncoding
for SPL non-NBF native binary encoding
is obtained from StreamSchema.newNativeBinaryEncoding()
.
The byte representation of encoded tuples is
not compatible with standard Java serialization.
Java Serialization
Instances ofTuple
implement java.io.Serializable
.
Tuples are serialized using standard Java serialization which is platform independent.
Note that a serialized tuple is is not compatible with SPL native binary encoding.
Character Tuple Representations
JSON encoding
Encoding of tuples as JSON objects is described by
JSONEncoding
- Since:
- InfoSphere Streams 3.0
- See Also:
StreamSchema.newNativeBinaryEncoding()