What does your rules look like? when you load object A, it does
pattern matching, but probably it may not be doing joins. I'm guess
your rule join A and B. If that is the case, the rule engine is doing
what it is suppose to do, pattern match A against B.
you may want to rewrite your rule to make loading more efficient.
peter
On 5/11/05, Negoita, Cristian <[EMAIL PROTECTED]> wrote:
>
>
> Hi all,
>
> I am using Rete engine to load up large amount of facts in the working area.
> (let's say 50.000 facts of type A and 500.000 facts of type B)
>
> The problem is that: if I load FIRST facts A, these are loaded fast, but
> AFTER that, facts B are loaded very slowly.
>
> And the other way around, if I start with B, the 500.000 objects are loaded
> fast and after the remaining 50.000 of A very slow.
>
> I have tried more than one way to load up: 1) new Fact / rete.assertFact()
>
>
>
>
>
>
> 2) new ObjectA / rete.definstance(ObjectA", objectA, false)
>
> 3) new ObjectA / rete.store(ObjectA", objectA) /
> rete.executeCommand("(definstance ObjectA (fetch ObjectA) static)");
>
> Below is a code snippet with variant 1) (but as said, I've tried all three).
> Objects/facts I use are not complex, they have only a few fields.
>
> Maybe someone has met the problem already, and I do smth wrong, or maybe I
> reach the limits of Rete engine?
>
> ...
>
> // instead of ObjectA it is written Request
>
> private static void loadRequests() throws JessException {
>
> long beginTime = System.currentTimeMillis();
>
> Fact f = null;
>
> System.out.println("Start loading requests ...");
>
> for (int requestId = 1; requestId <=50000; requestId++ ) {
>
> f = new Fact("Request", rete);
>
> f.setSlotValue("addressType", new Value(0, RU.INTEGER));
>
> f.setSlotValue("requestType", new Value(0, RU.INTEGER));
>
> f.setSlotValue("requestID", new Value(requestId, RU.INTEGER));
>
> rete.assertFact(f);
>
> }
>
> }
>
> ...
>
> // instead of ObjectsB it is written Hits
>
> private static void loadHits() throws JessException {
>
> Fact f = null;
>
> long beginTime = System.currentTimeMillis();
>
> System.out.println("Start loading hits ...");
>
> for (int requestId=1; requestId <= 50000; requestId++) {
>
> for (int i = 1; i<=10; i++) {
>
> f = new Fact("CustomerHit", rete);
>
> f.setSlotValue("hitID", new Value(i+requestId, RU.INTEGER));
>
> f.setSlotValue("customerID", new Value(0, RU.INTEGER));
>
> f.setSlotValue("requestID", new Value(requestId,
> RU.INTEGER));
>
> f.setSlotValue("companyID", new Value(i, RU.INTEGER));
>
> rete.assertFact(f);
>
> }
>
> }
>
> System.out.println("Time for loading " + (REQUEST_NO * 10) + " hits
> : " + (System.currentTimeMillis() - beginTime));
>
> }
>
> ...
>
> Thanks in advance for your answer,
>
> Cristian Negoita
>
>
>
>
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