Advanced Queuing - Oracle

General Features of JMS
Stream Message
A StreamMessage is used to send a stream of Java primitives. It is filled and read
sequentially. It inherits from Message and adds a stream message body. Its methods
are based largely on those found in java.io.DataInputStream and
java.io.DataOutputStream.
The primitive types can be read or written explicitly using methods for each type.
They may also be read or written generically as objects. To use Stream Messages,
create the queue table with the SYS.AQ$_JMS_STREAM_MESSAGE or AQ$_JMS_
MESSAGE payload types.
Stream messages support the following conversion table. A value written as the row
type can be read as the column type.
Table 12–4 Stream Message Conversion
boolean byte short char int long float double String byte[]
boolean X - - - - - - - X -
byte - X X - X X - - X -
short - - X - X X - - X -
char - - - X - - - - X -
int - - - - X X - - X -
long - - - - - X - - X -
float - - - - - - X X X -
double - - - - - - - X X -
String X X X X X X X X X -
byte[] - - - - - - - - - X
Bytes Message
A BytesMessage is used to send a message containing a stream of uninterpreted
bytes. It inherits Message and adds a bytes message body. The receiver of the
message supplies the interpretation of the bytes. Its methods are based largely on
those found in java.io.DataInputStream and
java.io.DataOutputStream.
This message type is for client encoding of existing message formats. If possible,
one of the other self-defining message types should be used instead.
Creating Applications Using JMS 12-27