[rules-users] How to write Hibernate query lang(HQL) in .DRL file

[Wolfgang Laun]

If you have working Java code

   import a.b.MyService;

   MyService service = ...;
   service.aMethod(...);

then in DRL you can do

   import a.b.MyService;

   global MyService service;

   rule x when
      ...
   then
      service.aMethod(...);
   end

and in your Java code, after you create the session and before you
fire any rules you must assign an object to the global:

  MyService service = ...;
  kSession.setGlobal( "service", service );

That's all.
-W


On 11/07/2012, ashwindrool <ashwin.khandelwal86 at gmail.com> wrote:
> Hi Laune,
>
> We are tried to created similar scenario in which we get error when we
> tried
> to execute HQL from DRL file but unfortunately , i m sorry we r unable to
> give you exact what error we are getting.
>
> But it will be great if you can share your approach or process in calling
> hibernate query directly in DRL file.
> How to pass hibernate session and execute query ....if we can run simple
> select query from their , then we can go for complex nested queries.
>
> --
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> Sent from the Drools: User forum mailing list archive at Nabble.com.
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