How to achieve parallel execution of two or more Entity Framework queries?

Question

Hi Everyone,
I'm creating some WCF service that use EF to query the database for the data that I need. The problem I have at the moment is that I have 2 or more EF LINQ queries which are declared and then executed to bring back my data... but this is in serial. One EF query is issued, and then the next one after that.
Does anyone know of a simple way to issue the queries in parallel? Or am I looking at async /parallel tasks to get the correct behaviour.
I know the DBContext is not thread safe, so I have no problem in declaring multiple contexts if required.
The code so far is as below:
+using (IMyContext ctx = MyFactory.GetInstance(request.UserId)) {+
Response response = new Response();
response.customer = ctx.GetCustomerByAccount(request.data.Account);
response.custInfo = ctx.GetCustInfoByAccount(request.data.Account);
response.address = ctx.GetDefaultAddressByAccount(request.data.Account);
return response;
+}+
Thanks in advance,
Nick

Answer 1

Hi,
Although I don't understand why you need to serialized two programs
that have no dependency on each other, maybe the following code can help provided the programs are executed using specific tcodes.
  DATA: BEGIN OF USR_TABL OCCURS 10.
          INCLUDE STRUCTURE UINFO.
  DATA: END OF USR_TABL.
CONSTANTS: OPCODE_LIST LIKE TH_OPCODE VALUE 2.
  refresh USR_TABL.
  CALL 'ThUsrInfo' ID 'OPCODE' field OPCODE_LIST
    ID 'TAB' FIELD USR_TABL-SYS.
  sort usr_tabl by mandt bname.
You can check wheter the other program(tcode) is being run from itab USR_TABL, good luck.
Jeffrey Satriadi