Steve, my problem is, that the ,key' after the method getContentValue() is looking for, has to be variable and can be set by the rule creator. I guess it remains the same problem whether I use DSL, Decision Table or any other construct to specify a Rule. It is simply necessary, that the user (actually NOT an IT-Expert) would be guided through the possibilities a fact object supports. If he cannot find the method getContentValue() he had to know its existence and arguments from elsewhere. That's why I'm curious whether it is possible (probably by using Java annotations or what else?) to tell the guided editor that it should also present some methods (not only fields according to the Java-Beans convention) to the user. Thank you for the DSL hint. I will have a closer look at this approach anyway. In my case it should probably looks like: [when]There is a document which has a value keyed by {key} that matches {expr}=$: Dokument(.. Regards - Hans Von: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] Im Auftrag von Stephen Masters Gesendet: Montag, 10. Juni 2013 16:01 An: Rules Users List Betreff: Re: [rules-users] choose method from fact object in guided editor Is there some reason you can't just create a no-args method on the fact such as "getReviewedContent()"? Or why the pattern match couldn't directly match on reviewed content instead of using rules in Java to determine whether content has been reviewed? If you don't want to do either of those, how about a DSL sentence to select reviewed content? i.e. [when][]There is a document which was reviewed by {reviewer}=$d: Document(getContentValue("reviewed") matches "{reviewer}"); Document(this == . (warning - probable syntax errors above) Steve On 10 Jun 2013, at 13:58, Hans Wirz <hans.wirz(a)xmv.ch&gt; wrote: Hello I'm new to Drools and Guvnor and I'm trying to find a way to enable the selection of a method (other than getter and setter) by the guvnor guided editor in a drop-down-list way like the fields. Example (.drl-file edited by Drools-Plugin in Eclipse): <image001.png> How to achieve this in Guvnor guided editor, because the method getContentValue("reviewed") cannot be chosen - it must be KNOWN by the one who creates the rule? My approach (using a Formula): <image002.png> Many thanks for your help Hans _______________________________________________ rules-users mailing list <mailto:rules-users@lists.jboss.org> rules-users(a)lists.jboss.org <https://lists.jboss.org/mailman/listinfo/rules-users> https://lists.jboss.org/mailman/listinfo/rules-users

Michael, you made me thinking ;-) I tried it by adding a second action. The guided editor let me chose to Call a method on a bound variable. (Call [d]) Unfortunately, the getContentValue() method was not available which made me thinking again. I've found, that all public methods on my fact object which begin with get. are stripped out by the guided editor! I simply changed it to contentValue() and there it was ;-) This means the following to my problem: 1. Users are able to choose also a method from a fact object - but only in the then-part of the rule. 2. This expression (the result thereof) cannot be bound to a variable (it is probably only thought to 'activate' some domain specific processes.) 3. I need to call a method in the LHS to decide whether the rule fires or not. Regards - Hans Von: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] Im Auftrag von Michael Anstis Gesendet: Montag, 10. Juni 2013 16:35 An: Rules Users List Betreff: Re: [rules-users] choose method from fact object in guided editor Have you tried using an expression on the RHS? On 10 June 2013 15:24, Hans Wirz <hans.wirz(a)xmv.ch&gt; wrote: Steve, my problem is, that the ,key' after the method getContentValue() is looking for, has to be variable and can be set by the rule creator. I guess it remains the same problem whether I use DSL, Decision Table or any other construct to specify a Rule. It is simply necessary, that the user (actually NOT an IT-Expert) would be guided through the possibilities a fact object supports. If he cannot find the method getContentValue() he had to know its existence and arguments from elsewhere. That's why I'm curious whether it is possible (probably by using Java annotations or what else?) to tell the guided editor that it should also present some methods (not only fields according to the Java-Beans convention) to the user. Thank you for the DSL hint. I will have a closer look at this approach anyway. In my case it should probably looks like: [when]There is a document which has a value keyed by {key} that matches {expr}=$: Dokument(.. Regards - Hans Von: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] Im Auftrag von Stephen Masters Gesendet: Montag, 10. Juni 2013 16:01 An: Rules Users List Betreff: Re: [rules-users] choose method from fact object in guided editor Is there some reason you can't just create a no-args method on the fact such as "getReviewedContent()"? Or why the pattern match couldn't directly match on reviewed content instead of using rules in Java to determine whether content has been reviewed? If you don't want to do either of those, how about a DSL sentence to select reviewed content? i.e. [when][]There is a document which was reviewed by {reviewer}=$d: Document(getContentValue("reviewed") matches "{reviewer}"); Document(this == . (warning - probable syntax errors above) Steve On 10 Jun 2013, at 13:58, Hans Wirz <hans.wirz(a)xmv.ch&gt; wrote: Hello I'm new to Drools and Guvnor and I'm trying to find a way to enable the selection of a method (other than getter and setter) by the guvnor guided editor in a drop-down-list way like the fields. Example (.drl-file edited by Drools-Plugin in Eclipse): <image001.png> How to achieve this in Guvnor guided editor, because the method getContentValue("reviewed") cannot be chosen - it must be KNOWN by the one who creates the rule? My approach (using a Formula): <image002.png> Many thanks for your help Hans _______________________________________________ rules-users mailing list <mailto:rules-users@lists.jboss.org> rules-users(a)lists.jboss.org <https://lists.jboss.org/mailman/listinfo/rules-users> https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Great! As my fact object (Dokument) encapsulates a whole text analytics process and should be able to return any key-value pairs (where "reviewed" is a key) there are many other (not predictable) keys which are probably used within a rule to evaluate the content of a document. So in that sense, the solution you suggest would not work. In another way, if a set of common and known keys exists to all users, your approach would be even more robust an less fragile to spelling an mistyping issues ;-) Thank you very much. Hans Von: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] Im Auftrag von Stephen Masters Gesendet: Montag, 10. Juni 2013 17:24 An: Rules Users List Betreff: Re: [rules-users] choose method from fact object in guided editor I think I have a better idea of what you're trying to do now. Below is the content of a message I sent to this list the other day. I think you might find the technique relevant to what you are doing. i.e. Create a DSL which refers to an enumeration which you define. That way, you get drop-down menus in the DSL sentences. That makes life easy for your users. From there you are able to take the value from the enum and use it in the generated code. Note that in the code below, it is taking the value of "unit" from the enumeration and using that as the field being matched in the code. The rest is from my previous email... I just couldn't find any examples of the DRL syntax for 'creating' a value like that in the LHS. A quick test with a contrived little example shows me that the following works: rule "Warn when my meal is too large" when $meal: Meal($calories: calories > 1000) $unit: String() from "calories" then insert(new MealTooBigWarning("That meal is bigger than your 1000 " + $unit + " limit.")); end So, based on that I'm able to write a DSL like this: [when][]I am given a meal of more than "{sizeLimit}" "{unit}" = $meal: Meal($size: {unit} > {sizeLimit}); $sizeLimit: Integer() from {sizeLimit}; $unit: String() from "{unit}" [then][]Warn that the meal is too big = insertLogical(new MealTooBigWarning("That meal is bigger than your " + $sizeLimit + " " + $unit + " meal limit.")); Which means that I can write DSLR like this: rule "Warn when my meal has too many calories" when I am given a meal of more than "1000" "calories" then Warn that the meal is too big end . which gives me: That meal is bigger than your 1000 calories meal limit. Or this: rule "Warn when my meal has too many diet club points" when I am given a meal of more than "11" "dietClubPoints" then Warn that the meal is too big end . which gives me: That meal is bigger than your 11 dietClubPoints meal limit. So I can define an enumeration: 'MealSize.units': ['calories=calories', 'dietClubPoints=diet club points'] So that in Guvnor, I have a single sentence with a drop-down menu containing the options "calories" and "diet club points". That keeps things nice and clean for the users.