Below is a very simple rule that binds a variable to a map value...
rule "how many times is map.get() called?"
when
p:Parameter(
$value:tags[1]==1,
$value == 1,
$value != 2,
$value != null,
$value in ("1","2")
)
then
I'm new to constraint programming and Drools Planner. I've read through the
docs and built some rules that would probably get me to the right answer,
eventually :)
I was hoping to get your suggestions for better concrete rules.
The problem is I need to order items in a performance with the follo
Hey,
I am trying to get multiple threads to insert events and run rules against the
union of events inserted ( an as soon as they are inserted, a timer drools
thread kicking of fireallrules() is not an option because that would introduce
a delay ) and wanted some opinion on the following:
1. St
Deploy the war
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
2012/2/9 Olfa h
> HI ,
>
> how to install DROOLS Guvnor ?
>
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> rul
Download the WAR most applicable to the web/application server on which you
wish to run it.
Install according to the web/application server on which you are deploying
it.
On Tomcat this, for me, is simply using the Manager Application to install
the Tomcat WAR.
sent on the move
On 9 Feb 2012 21
Hi,
how to install Guvnor?
thank you
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HI ,
how to install DROOLS Guvnor ?
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The NPE during insertion is highly suggestive of another problem. Even if
there were two Event classes (one the pojo, the other one the declared one)
there should not be a NPE; the "hello world" rule simply would not fire.
Are all fields - especially eventName - properly initialized before that
fac
Hi guys,
we are currently working with Drools Fusion in order to build a
complex event processing solution. We've modelled our events using and
object (Event) and this object is shared with everyone that needs to
publish and event.
Our scenario goes this way
1) Our shared
Thanks for the tip! I'd like to avoid cluttering the flowchart with decision
gates. I tried to read up on event handling but the term "boundary event"
that you are using (and especially how it is attached to the container
process) eludes me :-(
Can you or anyone expand a bit further on that suggest
Hello Wolfgang,
I am going to include my project team members Tom, Lauren, and Graham on
this as they are also helping me with this and might have a different
question to ask of you that might help us.
Thanks for your continued help with this.
Nancy
From: Wolfgang Laun
To: Rules User
The "then" part is java. Your question can thus be reformulated as
"preventing java code for doing dangerous operations".
One of basic solution is to run your java code (containing drools or
not) under a specific user (not root) that only have rights for some
specific folders.
As I think you a
Yes, it's strange.
Now, if there is a Person object person and you have, for instance,
person.setDateOfBirth( new Date( -1899, 0, 1 ) )
then the rule for matching this oldster would be
rule "Methuselah"
when
$p: Person( dateOfBirth == "1-Jan-1" )
then
...
The Date construc
One way would be to do dateOfBirth.time < nn
Where n is (new Date(-1900, 1,1)).getTime()
By the way be very very wary of Date objects coming back from the database and
check what the actual implementation class type is (and not the variable type).
Even though java.sql.Timestamp extends
We're considering a system in which partners could write and deploy their own
rules, but we are worried about security. Is there any support for preventing
harmful rules? For example:
rule "bad"
when
then
File f = new File("important.doc");
f.delete();
end
It is a java date. We use some java binding objects to build it. Below
is just a sampling of this. The second entry below indicates what to name
it in Java, it's java type, what DB2 table (cogentTable) and data field it
is coming from (cogentField). The snippets below might not help much.
2012/2/8 Esteban Aliverti
> This is a tricky one :)
Indeed it was! ;-)
I've made the changes as sugested and it works like a charm.
What you say about the process being created and executed *before* the
correponding fact is inserted into the session now totally makes sense to
me.
Thank you v
So what is the Java type of dateOfBirth, please?
-W
2012/2/9 Nancy Henggeler
> Hello Laun,
>
> Thank you for your quick response. This date is a date coming from a DB2
> date field and is valid in my incoming data. Frankly, I am with you, why
> not null versus a silly low date as such, arh
2012/2/9
> Beautiful!
>
> How would a business user (non-programmer) write such a rule.
>
There's some evidence that it's difficult to "un-think" your procedural
programming imprinting. A non-programmer might even have the edge over a
programmer.
But rule programming isn't a silver bullet - lots
Beautiful!
How would a business user (non-programmer) write such a rule. The only way I
can think of is create a dsl sentence for this specific condition
- Original Message -
From: Wolfgang Laun [wolfgang.l...@gmail.com]
Sent: 02/09/2012 05:02 PM CET
To: Rules Users List
Subject: Re: [
Hello Laun,
Thank you for your quick response. This date is a date coming from a DB2
date field and is valid in my incoming data. Frankly, I am with you, why
not null versus a silly low date as such, arh. But since it is coming
in as such do you know of a work around?
Thank so much,
Nan
Why would you want to test for January 1st in year 1? This is not a
value an object of type java.util.Date can represent. See that type's
javadoc for details, but the epoch begins January 1, 1970.
-W
On 9 February 2012 17:19, Nancy Henggeler
wrote:
> I have a simple rule where I want to bypass
I have a simple rule where I want to bypass elements that have a low date but
drools seems to be interpreting the date different then I am expecting.
Drools statement and error follows:
ClientSupplement ( dateOfBirth : dateOfBirth != null && != 0001-01-01)
throws error -- Error: [Error: badly fo
Don't think procedurally, just write the *rule* for a missing post ;-)
rule "missing fence post"
when
FencePost( $d: distanceFromStart )
FencePost( distanceFromStart == $d + 2*FencePost.GAP )
not FencePost( distanceFromStart == $d + FencePost.GAP )
then
System.out.println( "Missing
I need to write a rule to identify a missing element in a group of facts.
For example, let us say I want to ensure that my fence has a fence post
every 8 feet. My fact declaration is as follows:
declare FencePost
identifier : String
distanceFromStart: Long
end
If I add the following facts
Thank you Manstis...
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No they are not the same but there was a bug that caused the AUTOFOCUS
value to set the LOCK_ON_ACTIVE attribute.
On 9 February 2012 14:47, shanmuga wrote:
> Please Explain briefly
> Is lock-on-active and auto-focus are same in XLS Decision table?
>
> --
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> htt
Please Explain briefly
Is lock-on-active and auto-focus are same in XLS Decision table?
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Did you read the Bugzilla I linked to?
On 9 February 2012 14:39, shanmuga wrote:
> I ues XLS decision table only...
> It works fine, but LOCK-ON-ACTIVE is placed instead of AUTO-FOCUS while I
> using AUTO-FOCUS in the Decision Table. Can you help me
>
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> h
I ues XLS decision table only...
It works fine, but LOCK-ON-ACTIVE is placed instead of AUTO-FOCUS while I
using AUTO-FOCUS in the Decision Table. Can you help me
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Sent from t
Please explain more fully.
If you are using XLS decision tables the problem you might be experiencing
might relate to https://bugzilla.redhat.com/show_bug.cgi?id=744779
It was included in 5.4.0.beta2.
On 9 February 2012 14:17, shanmuga wrote:
> Hi All,
> How to use *auto-focus* in deci
Hi All,
How to use *auto-focus* in decision table?
Is *LOCK-ON-ACTIVE* and *AUTO-FOCUS* both are same in Decision table?
Please explain briefly.
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Hi Joe,
Thanks for correcting me.
This image indeed proves your point:
http://java.sun.com/docs/hotspot/gc5.0/fig4.gif
As well as this thread:
http://www.velocityreviews.com/forums/t683307-question-on-xms-xmx-and-xx-maxpermsize-in-jvm-start-parameter.html
Very interesting, I had it wrong f
On 02/09/2012 09:34 AM, Geoffrey De Smet wrote:
> The perm gen space is a subset of the heap space.
> So it doesn't make sense to put them on the same value.
>
> Try this instead:
> -Xmx1024m -XX:MaxPermSize=512m
> Or, if that fails:
> -Xmx2048m -XX:MaxPermSize=1024m
>
Sorry to disagree Geo
Ok, i was working on cleaning the code and i've found the reason (now it will
be great to understand why :))
As i'm working with code from an open source platform, i have these lines in
my example:
KnowledgeAgentConfiguration aconf =
KnowledgeAgentFactory.newKnowledgeAgentConfiguration();
aconf.s
You can get a build containing the fix from Nexus:
https://repository.jboss.org/nexus/index.html#nexus-search;gav~org.drools~guvnor-webapp~5.3.2-SNAPSHOT~~
2012/2/8 jian zhi
> Mike,
>
> Is it possible to release a patch of 5.3?
>
> Thanks,
> Jian
>
> --
> *From:* M
Use salience or some other order to control the facts. But I think the key
point to remember is that Drools isn't stable, given the same set of rules and
the same set of input in the same order there is no guarantee that the rules
will execute in the same order unless there is something in the r
The perm gen is the place where all your Java class files live in memory
(and each DRL file generates a Java class file).
The perm gen space is a subset of the heap space.
So it doesn't make sense to put them on the same value.
Try this instead:
-Xmx1024m -XX:MaxPermSize=512m
Or, if that fai
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