[rules-users] Error: unable to resolve method

[Wolfgang Laun]

The additional .AddBookingPayment in the function name is the
class name the DRL compiler has to invent for the class the (static)
method addBookingPayment is generated into.

the trace indicates that somehow the literals 35 and 100 are taken as
Integer objects,
and that the signature matching has a flaw. Try
(a) declaring parameters days and percentage as Integer
(b) keep the function as is, but remove dialect "mvel" from the rule.

Please report the outcome of both experiments and the Drools version you're
using; it might be that a JIRA should be made.

-W


On Mon, Jan 4, 2010 at 7:46 AM, xalperte <javier.alperte at rudder-tech.com>wrote:

>
> I'm having a problem a little odd trying to fire rules using the Guvnor.
>
> In Guvnor I have a package named package kobo.regularSafaris, inside this
> package I have defined rules (with some DSL definitions), a decision table
> (xls) and two functions.
>
> The problem is that when I'm trying to call the functions in the
> consequence
> of a rule I'm having the following error:
>
> org.drools.runtime.rule.ConsequenceException: [Error: unable to resolve
> method:
>
> kobo.regularSafaris.AddBookingPayment.addBookingPayment(kobo.regularSafaris.BookingRequest,
> java.lang.Integer, java.lang.Integer) [arglength=3]]
> [Near : {... Unknown ....}]
>             ^
> [Line: 1, Column: 0]
>        at
>
> org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:23)
>        at
> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:943)
>        at
> org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:885)
>        at
> org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1086)
>        at
>
> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:660)
>        at
>
> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:632)
>        at
>
> org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:187)
>        at
>
> com.rudder.packages.test.rules.PricesRulesTestCase.testNobelLowSeasonPrices(PricesRulesTestCase.java:108)
>
> The function definition is as follows:
>
> function void addBookingPayment(BookingRequest request, int days, int
> percentage) {
>     PaymentPolicy payment = new PaymentPolicy();
>     payment.setPercentage(percentage);
>
>     if( days > 0 ) {
>         DateMidnight dueDate = new
> DateMidnight(request.getDepartureDate().getTime()).minusDays(days);
>         payment.setType("DEFERRED");
>         payment.setDueDate(dueDate.toDate());
>     } else {
>         payment.setType("NOW");
>         payment.setDueDate(null);
>     }
>
>     List payments = request.getBookingData().getPayments();
>     if(payments == null) {
>         payments = new ArrayList();
>         request.getBookingData().setPayments(payments);
>     }
>
>     payments.add(payment);
> }
>
> And the rule that is calling the function is the following:
>
> rule "Def. Deferred Payment for Credit Operator"
>        dialect "mvel"
>        when
>                $request: BookingRequest()
>                user: User(type == "Professional") from $request.user
>                eval($request.getBookingData().getPayments() == null) ||
> ArrayList(size ==
> 0) from $request.bookingData.payments
>                eval(
> "true".equals($request.getUser().getTags().get("hasCredit")))
>                eval( (new
>
> DateMidnight($request.getDepartureDate().getTime())).minusDays(35).toDate().after(new
> Date()))
>        then
>                addBookingPayment($request, 35, 100);
> end
>
> It seems that the system is adding an extra "AddBookingPayment" to the
> package name and this is causing the problem. Why is doing that? how can i
> solve this?
>
> Thanks in advance
>
> --
> View this message in context:
> http://n3.nabble.com/Error-unable-to-resolve-method-tp108194p108194.html
> Sent from the Drools - User mailing list archive at Nabble.com.
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