[rules-users] Functions with array parameters (double[]) cease to compile in 5.2.0

[Wolfgang Laun]

I thought you might have - it's bound to be some freaky situation you must
have run into. I suggest that you experiment a little.

Does this error happen when you have nothing but a function with this
signature on a .drl file?

Does it also occur with some other simple type, or with a class?

Do you have any particular setup for the builder?

-W



On 15 August 2011 15:10, ru <sorokin at oogis.ru> wrote:

> Alas, I have the same problem with this code:
>
> function ArrayList nextPoint( int N, int t1, int sec, double[] a, double v
> )
> { int Nxt = N+1;
> int Nxt2 = Nxt * 2;
> if(Nxt2 >= a.length-1)
>    return null;
> int N2 = N * 2;
> double p1 = a[N2];
> double l1 = a[N2+1];
> double p2 = a[Nxt2];
> double l2 = a[Nxt2+1];
> double D = 1.0; // GreatCircle.sphericalDistance(p1, l1, p2, l2);
> int dt = sec - t1;
> double ds = dt * v;
> if(ds > D){
>    int t2 = (int) (t1 + D / v);
>    return nextPoint(Nxt, t2, sec, a, v);
> } else {
>    double az = 1.0; //GreatCircle.sphericalAzimuth(p1, l1, p2, l2);
>    double[] sb = new double[1]; //GreatCircle.sphericalBetween(p1, l1, ds,
> az, 1);
>    ArrayList al = new ArrayList();
>    al.add(N);
>    al.add(t1);
>    al.add(new double[]{sb[2], sb[3]});
>    al.add(az);
>    return al;
> } }
>
> Only when I remove brackets after "double" in the parameter list like this
> "function ArrayList nextPoint( int N, int t1, int sec, double a, double v
> )", the error message "unable to resolve type while building function"
> disappear. I have downloaded  Drools distribution from this link
>
> http://download.jboss.org/drools/release/5.2.0.Final/drools-distribution-5.2.0.Final.zip
> .
> Same situation I have with 5.3.0 distribution.
>
> --
> View this message in context:
> http://drools.46999.n3.nabble.com/Functions-with-array-parameters-double-cease-to-compile-in-5-2-0-tp3251260p3255704.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
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