Oracle native API for AQ - Null pointer exception

Question

Hi
I am trying to enqueue a message to AQ adapter through the java native api. But i am getting a null pointer exception.
import java.sql.*;
import oracle.AQ.*;
Connection db_conn;
AQSession aq_sess = null;
AQQueueTable q_table = null;
AQQueue queue = null;
AQMessage message ;
byte[] b_array ;
try{
String test_data = "hello";
Class.forName("oracle.jdbc.driver.OracleDriver");
db_conn =
DriverManager.getConnection(
"jdbc:oracle:thin:@localhost:1521:SOABRM",
"soabrm", "password");
System.out.println("JDBC Connection opened ");
db_conn.setAutoCommit(false);
Class.forName("oracle.AQ.AQOracleDriver");
aq_sess = AQDriverManager.createAQSession(db_conn);
System.out.println("Successfully created AQSession ");
q_table = aq_sess.getQueueTable ("soabrm", "AQ_Test");
queue = aq_sess.getQueue ("soabrm", "AQ_Queue_Test");
message = queue.createMessage();
b_array = test_data.getBytes();
AQRawPayload raw_payload = message.getRawPayload();
AQEnqueueOption enq_option = new AQEnqueueOption();
raw_payload.setStream(b_array,b_array.length); */* Erroring out at this statement*/*
message.setRawPayload(raw_payload);
queue.enqueue(enq_option, message);
db_conn.commit();
catch(Exception ex){
System.out.println("Exception "+ex.getMessage());
Error : Exception null
Please let me know if I missed something.
Thanks in advance!!!!!

Answer 1

hi,
I had found the issue. The queue takes object type messages where as I was trying with Raw messages.
Instead of AQRawPayload raw_payload = message.getRawPayload();
I need to use
AQObjectPayload raw_payload = message.getObjectPayload()
and pass object as input to the queue.