10:38 a.m.
I was using or in a rule for example
rule "or example"
when
$t : (Transaction(org == "us") or Transaction(acc == "111"))
then
insert(new Record($t, 1));
end
This would work but would create 2 Record objects which we sorted out later
on but now for performance reasons I don't want the second match to be
evaluated if the first one matches. I saw a post about named consequences
and came up with something like:
when
$t : Transaction(org == "us")
if ($t != null) break[t1]
$t1 : Transaction(acc == "111")
then
insert(new Record($t1, 1));
then[t1]
insert(new Record($t, 1));
end
This compiles but the "or" doesn't work. This is probably due to my
"break".
Is there a way I can do what I need?
Note that the performance implication of performing the or is not apparent
in this example but it is there - I have simplified this example to make it
easier to talk about (and to protect the innocent)
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11:03 a.m.
I could do this:
when
$t : Transaction((org == "us") || (expensive() == "111"))
then
insert(new Record($t, 1));
end
If org is indeed equal to "us" is it guaranteed that expensive() doesn't
get
executed?
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2:46 p.m.
On 20/01/2014, pmander <paul.s.mander(a)gmail.com> wrote:
I could do this:
when
$t : Transaction((org == "us") || (expensive() == "111"))
then
insert(new Record($t, 1));
end
Yes, that takes care of the unwanted duplication.
If org is indeed equal to "us" is it guaranteed that
expensive() doesn't
get
executed?
You can test this quite easily: add a print to expensive().
-W
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7:20 a.m.
laune wrote
On 20/01/2014, pmander <
paul.s.mander@
> wrote:
> I could do this:
>
> when
> $t : Transaction((org == "us") || (expensive() == "111"))
> then
> insert(new Record($t, 1));
> end
>
Yes, that takes care of the unwanted duplication.
> If org is indeed equal to "us" is it guaranteed that expensive()
doesn't
> get
> executed?
You can test this quite easily: add a print to expensive().
-W
I quick related question regarding performance. I now have
rule "3"
when
$t : Transaction(
(
(
fieldFor("SALES_ORG")=="SO10167" &&
fieldFor("CHANNEL")=="A" &&
fieldFor("ONLINE_IND")=="N" &&
colMatch(rulesMap,3,2000,baseData,"PRODUCT",0)
) ||
(
fieldFor("CHANNEL")=="A" &&
fieldFor("ONLINE_IND")=="N" &&
fieldFor("ACCOUNT")
in("A11329","A11330","A11331","A11332","A11333","A11334","A11335","A11336")
&&
colMatch(rulesMap,3,2000,baseData,"PRODUCT",0)
)
)
)
then
do something
end
instead of
rule "3"
when
$t : (
Transaction(
fieldFor("CHANNEL")=="A",
fieldFor("ONLINE_IND")=="N",
fieldFor("SALES_ORG")=="SO10167",
colMatch(rulesMap,3,1370,baseData,"PRODUCT",0))
or
Transaction(
fieldFor("CHANNEL")=="A",
fieldFor("ONLINE_IND")=="N",
fieldFor("ACCOUNT")
in("A11329","A11330","A11331","A11332","A11333","A11334","A11335","A11336"),
colMatch(rulesMap,3,2000,baseData,"PRODUCT",0)
)
then
do something
end
I would have thought that the first was slight better performance wise as
the second produces twice as many matches which I need to filter out but
putting 20,000 Transactions through this (2400 rules) takes 51 seconds for
option 2 and 200 seconds for option 1.
If I just have the first half of the rule:
$t : (
Transaction(
fieldFor("CHANNEL")=="A",
fieldFor("ONLINE_IND")=="N",
fieldFor("SALES_ORG")=="SO10167",
colMatch(rulesMap,3,1370,baseData,"PRODUCT",0))
then
do something
end
then the performance is 10 seconds. The extra time being taken up with all
those other "or" mis-matches.
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pmander -
Wolfgang Laun