In Jess 7 that's ever so easy! Once passed back to Jess, to get the
Strings from the list, how do I loop through because previously I used:
(defglobal ?*ArrayList* = (new java.util.ArrayList))
(for (bind ?i 0) (< ?i (?*ArrayList* size))(++ ?i)
for a normal Java ArrayList but this time its a Jess list? I would have
prefered to have stuck with Java ArrayLists throughout but I guess that is
not possible when creating a userfunction as you can't return a Java
ArrayList? Thanks.
>
> On Mar 29, 2007, at 6:14 PM, [EMAIL PROTECTED] wrote:
>
>> Hi, I've been writing my own userfunctions in Java for Jess and have
>> managed fine returning strings, integers and doubles to Jess but now I
>> want to return an array but have come stuck and don't know the
>> syntax well
>> enough to know how to do it. Error = "The constructor Value(String
>> [], int)
>> is undefined". Once I pass back my Java array of type String to my
>> Jess
>> code I will be hoping to iterate through it. Thanks.
>>
>> ------------------------------------------------
>> public Value call(ValueVector vv, Context c) throws JessException {
>> String s = vv.get(1).stringValue(c);
>> int i = vv.get(2).intValue(c);
>> String list[] = splitMessage(s, i);
>> return new Value(list, RU.LIST);
>> }
>
> In Jess 7, one easy way to turn any kind of array into a ValueVector
> is to use the static "objectToValue()" method in the jess.RU class.
>
> return RU.objectToValue(String[].class, list);
>
> This will return a Value of type RU.LIST containing a ValueVector of
> RU.STRING objects.
>
> in Jess 6, you have to do it yourself;
>
> ValueVector vv = new ValueVector();
> for (String s: list)
> vv.arg(s);
> return new Value(vv, RU.LIST);
>
> ---------------------------------------------------------
> Ernest Friedman-Hill
> Advanced Software Research Phone: (925) 294-2154
> Sandia National Labs FAX: (925) 294-2234
> PO Box 969, MS 9012 [EMAIL PROTECTED]
> Livermore, CA 94550 http://www.jessrules.com
>
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