What is the payload structure has to be used for AQ to process XML messages.

Question

Hi Experts,
We have an IBM MQ and Oracle AQ has to be be linked to that.
MQ always contains XML messages and same message will come to AQ.
Now I want to create AQ. What is the payload structure(object) has to be used for AQ to process XML messages.
Please help me.
Thanks.

Answer 1

Hello,
using XML type data in AQ you have to define a special AQ payload type
(corresponding to MQ):  QUEUE_PAYLOAD_TYPE = 'SYS.MGW_BASIC_MSG_T'.
An example template for enqueueing looks like (you have to transform
from XMLTYPE to the MGW payload type):
DECLARE    
   queue_options      DBMS_AQ.ENQUEUE_OPTIONS_T; 
   message_properties DBMS_AQ.MESSAGE_PROPERTIES_T;  
   message_id         RAW(16);  
   v_message          SYS.XMLType;   
   v_clob             CLOB;
   v_payload          SYS.MGW_BASIC_MSG_T;
   v_text_body       
SYS.MGW_TEXT_VALUE_T;
BEGIN
   v_message      := SYS.XMLType.createXML('<SAMPLE>hello world</SAMPLE>'); 
   v_clob         := v_message.GETCLOBVAL();
   v_text_body    := SYS.MGW_TEXT_VALUE_T( NULL, v_clob );
   v_payload      := SYS.MGW_BASIC_MSG_T( v_header, v_text_body, NULL );
   DBMS_AQ.ENQUEUE( queue_name         => 'my_queue',
                    enqueue_options    => queue_options,
                    message_properties => message_properties,
                    payload            => v_payload,
                    msgid              => message_id);
END;
Kind regards,
WoG