[rules-users] Camel Endpoint usage strategy
Hi,
we're refactoring a standalone application (Spring 3.0.5, Drool 5.1.1) to
use Apache Camel 2.8.0. As seen in other post, there is very little
information available about (
http://downloads.jboss.com/drools/docs/5.1.1.34858.FINAL/drools-integration/html/index.html
Drools Endpoint or Camel integration ). We don't want to use drools-server
as having a web container is not an option.
The app basically loads from large CSV files, processes each row with lots
of rules and inserts the result in a DB. It is therefore a pretty demanding
process.
Here is an excerpt of what it does without Camel:
/
while (scanner.hasNextLine()) {
...
FactHandle trafficHandle = session.insert(row);
session.fireAllRules();
session.retract(trafficHandle);
}
/
What we'd like to achieve is performing the above loop content in an
endpoint/processor (?) and configure it to use multiple threads so several
rows can be handled simultaneously.
Any sugestions?.
Thank you
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[rules-users] match longest matching Long in WM
Hi,
I hope you can help me out here with a way to implement this rule:
1) I have String WM
2) I have beans in WM with a property called 'code'
public class MyBean {
private String code;
...
3) I want a rule of the type Process MyBean with the longest-matching,
not-null code
Let explain myself a little further with an example.
I have the following MyBean objects in WM with the given code properties:
MyBean [code = 44]
MyBean [code = 443]
MyBean [code = 4432]
MyBean [code = 36]
MyBean [code = 7]
What I want to get is a rule where the following samples would assign to a
variable the given results shown:
441 gives MyBean [code = 44]
443 gives MyBean [code = 443]
2 gives null
I think the rule could start like:
rule Process MyBean with the longest-matching, not-null code
dialect mvel
when
$s : String()
$m : MyBean($s matches /the longest not-null possible
MyBean.code/)
then
..
Thank you
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Re: [rules-users] check whether a key is present in global Map, i.e. mimicking containsKey() behavior
Hi, I found a possible cause from StatefulKnowledgeSession API: /Also, it is a good practice to set your globals before inserting your facts or starting your processes. Rules engines evaluate rules at fact insertion time, and so, if you are using a global to constraint a fact pattern, and the global is not set, you may receive a NullPointerException./ I did so and I no longer get the compilation error. However, 'eval' construction is not working in LHS. I'm shifting to insert items from maps into WM directly. Cheers esstrata wrote: Hello, I'm using Drools 5.1.1 in a JavaSE 6 project. I can't get running a rule where a value obtained from WM is check for existence as a key of a global Map. I have a map of the type ProductTextCode - Product, where keys are String and values Product /global Map productMap/ Then in a rule a I want a condition where each String in WM is tested against map keyset. / rule Product ID not in products map dialect mvel when $pid : String() = Here goes the condition = then System.out.println(Invalid product id: + $pid) retract ($pid) end / So far I've tried with productMap.containsKey($pid) but a get a MVEL error as it takes 'containsKey' as a property. Please help. Thank you. esstrata wrote: Hello, I'm using Drools 5.1.1 in a JavaSE 6 project. I can't get running a rule where a value obtained from WM is check for existence as a key of a global Map. I have a map of the type ProductTextCode - Product, where keys are String and values Product /global Map productMap/ Then in a rule a I want a condition where each String in WM is tested against map keyset. / rule Product ID not in products map dialect mvel when $pid : String() = Here goes the condition = then System.out.println(Invalid product id: + $pid) retract ($pid) end / So far I've tried with productMap.containsKey($pid) but a get a MVEL error as it takes 'containsKey' as a property. Please help. Thank you. -- View this message in context: http://drools.46999.n3.nabble.com/check-whether-a-key-is-present-in-global-Map-i-e-mimicking-containsKey-behavior-tp3137610p3140218.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] check whether a key is present in global Map, i.e. mimicking containsKey() behavior
Hi, I checked and I was correctly using session.setGlobal. No idea why this happens Thank you -- View this message in context: http://drools.46999.n3.nabble.com/check-whether-a-key-is-present-in-global-Map-i-e-mimicking-containsKey-behavior-tp3137610p3140225.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] check whether a key is present in global Map, i.e. mimicking containsKey() behavior
Hello, I'm using Drools 5.1.1 in a JavaSE 6 project. I can't get running a rule where a value obtained from WM is check for existence as a key of a global Map. I have a map of the type ProductTextCode - Product, where keys are String and values Product /global Map productMap/ Then in a rule a I want a condition where each String in WM is tested against map keyset. / rule Product ID not in products map dialect mvel when $pid : String() = Here goes the condition = then System.out.println(Invalid product id: + $pid) retract ($pid) end / So far I've tried with productMap.containsKey($pid) but a get a MVEL error as it takes 'containsKey' as a property. Please help. Thank you. -- View this message in context: http://drools.46999.n3.nabble.com/check-whether-a-key-is-present-in-global-Map-i-e-mimicking-containsKey-behavior-tp3137610p3137610.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] check whether a key is present in global Map, i.e. mimicking containsKey() behavior
Yes, I used eval.
In fact this is the error I'm getting
org.drools.RuntimeDroolsException: productMap.containsKey($pid) == false :
[Error: unable to access property (null parent): containsKey]
[Near : {... Unknown }]
And this is the line
eval(productMap.containsKey($pid) == false)
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[rules-users] Accessing ListString with mvel in condition
Hi, I've tried several options but none working so I welcome any help. * I'm using Drools 5.1.1. * I succesfully insert several ListString into Working Memory and I'm able to printout them with a debug rule. * The problem is, when I try to access a position in a list I get no match even though I have values that should match. Here is the relevant code: rule B Number has characters other than numbers dialect mvel when $traffic_row : List(this[5] matches [^0-9]) then System.out.println(row found + $traffic_row) end Thank you in advance -- View this message in context: http://drools.46999.n3.nabble.com/Accessing-List-String-with-mvel-in-condition-tp3113685p3113685.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Accessing ListString with mvel in condition
It worked. Thank you very much Wolfgang -- View this message in context: http://drools.46999.n3.nabble.com/Accessing-List-String-with-mvel-in-condition-tp3113685p3114406.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
