Problem in publishing the messgae

Question

Hi,
I am publishing the object in the AQ using JMS APIs.But it is
throwing a JMS exception stating JMS-108: Messages of type
ObjectMessage not allowed with Destinations containing payload
of type SYSTEM.NEW_MESSAGE_TYPE.
Can anybody suggest me where I am going wrong.
I have created the payload/Queuetable as show below:
CREATE TYPE new_message_type AS OBJECT
(timestamp DATE,
doc VARCHAR2(2000));
begin
DBMS_AQADM.CREATE_QUEUE_TABLE(
queue_table =>'new_docs_table',
multiple_consumers =>TRUE,
queue_payload_type =>'new_message_type',
compatible =>'8.1');
end;
And in the java code to publish is:
AQjmsObjectMessage obj_message
=AQjmsObjectMessage).createObjectMessage());
DocMessage m_ncDoc = new DocMessage();
String tempDoc = "hello all";     
m_ncDoc.setDocument(tempDoc);
m_ncDoc.setTimeStamp(new Date());
obj_message.setObject(m_ncDoc);
myPub.publish(tp,obj_message);     
mySession.commit();

Answer 1

Hi,
The problem is that the queue type and the payload type do not
match.
You can do one of the following:
1. If you wish to use a queue with
user-defined ADT like SYSTEM.NEW_MESSAGE_TYPE, then you need to
generate a java class that maps to this type using Jpublisher.
I'm not sure if DocMessage was generated using Jpublisher. If
not then you'll have to generate CustomDatum interfaces for
NEW_MESSAGE_TYPE using Jpublisher. Check JDBC documentation on
using Jpublisher
Then you must use createAdtMessage instead of
createObjectMessage. The rest of the code is fine.
2. The other option is that you store a Serialized java object in
the queue. For this you'll have to create the queue table with
SYS.AQ$_JMS_OBJECT_MESSAGE. Then you can have your own Java
class which implements Serializable. In this case you can use the
code as is with createObjectMessage
You can check aqjmsdemo04.java and aqjmsdemo06.java in
$ORACLE_HOME/rdbms/demo for examples of both AdtMessage and
ObjectMessage
Hi,
I am publishing the object in the AQ using JMS APIs.But it is
throwing a JMS exception stating JMS-108: Messages of type
ObjectMessage not allowed with Destinations containing payload
of type SYSTEM.NEW_MESSAGE_TYPE.
Can anybody suggest me where I am going wrong.
I have created the payload/Queuetable as show below:
CREATE TYPE new_message_type AS OBJECT
(timestamp DATE,
doc VARCHAR2(2000));
begin
DBMS_AQADM.CREATE_QUEUE_TABLE(
queue_table =>'new_docs_table',
multiple_consumers =>TRUE,
queue_payload_type =>'new_message_type',
compatible =>'8.1');
end;
And in the java code to publish is:
AQjmsObjectMessage obj_message
=AQjmsObjectMessage).createObjectMessage());
DocMessage m_ncDoc = new DocMessage();
String tempDoc = "hello all";     
m_ncDoc.setDocument(tempDoc);
m_ncDoc.setTimeStamp(new Date());
obj_message.setObject(m_ncDoc);
myPub.publish(tp,obj_message);     
mySession.commit();