Oracle高級隊列(Advanced Queue)簡單實例

-- Create Type
create or replace type note as Object(
 subject varchar2(100),
 Content varchar2(2000),CreateTime date
);

-- Create queue table
begin
 sys.dbms_aqadm.create_queue_table(
  queue_table => 'NOTETAB',
  queue_payload_type => 'TEST.NOTE'
end;

--create queue
begin
 sys.dbms_aqadm.create_queue(
  queue_name => 'NOTEQ',
  queue_table => 'NOTETAB',
  queue_type => sys.dbms_aqadm.normal_queue,
  max_retries => 5,
  retry_delay => 0,
  retention_time => 0);
end;

--enqueue
declare
v_Message note;
v_MsgId RAW(16);
v_options DBMS_AQ.ENQUEUE_OPTIONS_T;
v_properties DBMS_AQ.MESSAGE_PROPERTIES_T;
v_Recipients DBMS_AQ.AQ$_RECIPIENT_LIST_T;
begin
   v_Message:=note(subject => 'note3',Content => 'content3',createTime => sysdate);

--   v_Recipients(0) := sys.aq$_agent('NOTE','MTQ',0);
--   v_properties.recipient_list := v_Recipients;
   v_options.visibility :=DBMS_AQ.IMMEDIATE;
   dbms_aq.enqueue(queue_name => 'noteq',enqueue_options => v_options,message_properties => v_properties,payload => v_Message,msgid => v_MsgId);
   dbms_output.put_line('encode success,msgid is '||v_MsgId);

end;

--dequeue
declare
v_Message note;
v_MsgId RAW(16);
v_options DBMS_AQ.DEQUEUE_OPTIONS_T;
v_properties DBMS_AQ.MESSAGE_PROPERTIES_T;
v_Recipients DBMS_AQ.AQ$_RECIPIENT_LIST_T;
begin

--   v_Recipients(0) := sys.aq$_agent('NOTE','MTQ',0);
--   v_properties.recipient_list := v_Recipients;
   v_options.visibility :=DBMS_AQ.IMMEDIATE;
   dbms_aq.dequeue(queue_name => 'noteq',dequeue_options => v_options,message_properties => v_properties,payload => v_Message,msgid => v_MsgId);
   dbms_output.put_line('decode success,msgid is '||v_MsgId);
   dbms_output.put_line('subject is '||v_Message.subject);
   dbms_output.put_line('Content is '||v_Message.Content);
   dbms_output.put_line('createTime is '||to_char(v_Message.createTime,'yyyy-mm-dd hh24:mi:ss'));
end;