[rules-users] function problem

[David Sinclair]

Charlie,

Can u explain more simply, without the function, what u are trying to do? Is
it just to see if there exists a Person, whose tagList property contains a
string that is the same as one of the engrTags from a TagCodes?

On Sat, Nov 22, 2008 at 12:25 AM, Charlie Holland <hollandck at gmail.com>wrote:

> I'm fairly new to Drools so there may be an easier way to do this. I need
> to check to see if any one of a list of tags on an object are in another
> list of tags and am trying to do that with a function. the compiler tells me
> it can't compile my eval function:
>
> #list any import classes here.
> **
>
> *import* com.cp.services.rules.sources.Person;
> **
>
> *import* com.cp.services.rules.actions.PersonActions;
> **
>
> *import* com.cp.rules.TagCodes;
> **
>
> *import* java.util.List;
>
>
>
> #declare any global variables here
> **
>
> *global* com.cp.services.rules.actions.PersonActions personActions;
>
> **
>
> *function* *boolean* hasOneOf(List list1, String[] list2){
>
> *for* (Object obj : list1) {
>
> String string = (String)obj;
>
> *for* (*int* j = 0; j < list2.length; j++) {
>
> *if* (string != *null* && string.equals(list2[j])) {
>
> *return* *true*;
>
> }
>
> }
>
> }
>
> *return* *false*;
>
> }
>
> **
>
> *rule* "Engineering"
>
> *dialect* "mvel"
>
> *when*
> **
>
> #conditions
>
> Person( ageInYears >= 18 ) *and*
>
> *eval* ( hasOneOf(Person(tagList), TagCodes(engrTags)) )
>
> *then*
>
> #actions
>
> personActions.addAction("EngineeringGroup");
>
> *
>
> end
> *
>
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>
>
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