[rules-users] the condition starts with - in DSL mapping
Hi,
I am using guvnor-5.2.0.CR1-jboss-as-5.1. I found a bug in DSL mapping.
This is the DSL items.
[when]There is an TestObject=TestObject()
[when]-startDate is before {date}=startDateDateUtils.parseDate({date})
[when]-endDate is after {date}=endDateDateUtils.parseDate({date})
I created a business rule added these three lines in order. I clicked view
source and get this result. The second condition is not in the right place.
rule test121
dialect mvel
when
TestObject( startDateDateUtils.parseDate(01/01/2009,
endDateDateUtils.parseDate(01/01/2008) ) )
then
end
This is what I expected. I guess guvnor is looking for the first ) and add
the condition (start with -) before it. Actually it should look for the
last ) and add the condition before it.
rule test121
dialect mvel
when
TestObject( startDateDateUtils.parseDate(01/01/2009) ,
endDateDateUtils.parseDate(01/01/2008) )
then
end
This problem also exists in drools-5.1.1-guvnor. It will be great if it can
be fixed soon.
Thanks,
James
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[rules-users] Intersecting two collections in LHS
I have in the working memory all possible sentences that can be presented to the user ( class Sentence() ). Each sentence holds a collection (String collection) called descriptor that describe the sentence. Based on various rules I populate a collection called messageFilter which will be used to select the appropriate sentence. The proper sentence is one that all its descriptors match the one in the messageFilters What I would like is something of the sort: $sentences: ArrayList() from collect (Sentence(descriptor contains messageFilter) as messageFilter is a collection, this is not a valid code. What would be the proper method to implement it. I am using drools 5.1.1 but am willing to upgrade to 5.2 if required. Thanks, Hezi ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Intersecting two collections in LHS
Try this http://members.inode.at/w.laun/drools/CustomOperatorHowTo.html in combination with http://members.inode.at/w.laun/drools/SubsetOfEvaluatorsDefinition.java Feedback (to me personally) would be appreciated. -W 2011/6/23 Hezi Stern he...@delegatecom.com I have in the working memory all possible sentences that can be presented to the user ( class Sentence() ). Each sentence holds a collection (String collection) called descriptor that describe the sentence. ** ** Based on various rules I populate a collection called messageFilter which will be used to select the appropriate sentence. The proper sentence is one that all its descriptors match the one in the messageFilters ** ** What I would like is something of the sort: ** ** $sentences: ArrayList() *from* *collect* (Sentence(descriptor *contains* messageFilter) as messageFilter is a collection, this is not a valid code. What would be the proper method to implement it. ** ** I am using drools 5.1.1 but am willing to upgrade to 5.2 if required. ** ** Thanks, Hezi ** ** ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Drools 5.1 guided rule editor can only create one rule per .brl file?
Hi all, I'm finding the guided rule editor for eclipse useful in building rules with better readability but it seems to be restricted to one rule per .brl file. Am I missing something? Thanks in advance. -- View this message in context: http://drools.46999.n3.nabble.com/Drools-5-1-guided-rule-editor-can-only-create-one-rule-per-brl-file-tp3099153p3099153.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] Search function of Guvnor limited to filename search?
Hi all, I've tried both 5.1 and 5.2 CR version of Guvnor, seems like the search function is limited to matching filenames, understand that the search function is powered by Lucene which should be more powerful :) Any way to get Guvnor perform full-text or relevance search on the rules? Thanks in advance. -- View this message in context: http://drools.46999.n3.nabble.com/Search-function-of-Guvnor-limited-to-filename-search-tp3099182p3099182.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] the condition starts with - in DSL mapping
I assume you have created a JIRA for this; since you noticed it in 5.1.1?
Can you please advise the number and we can endeavour to take a look for
5.3.
With kind regards,
Mike
On 23 June 2011 09:16, James Gu j...@cnsh.delphi-tech.com wrote:
Hi,
I am using guvnor-5.2.0.CR1-jboss-as-5.1. I found a bug in DSL mapping.
This is the DSL items.
[when]There is an TestObject=TestObject()
[when]-startDate is before {date}=startDateDateUtils.parseDate({date})
[when]-endDate is after {date}=endDateDateUtils.parseDate({date})
I created a business rule added these three lines in order. I clicked view
source and get this result. The second condition is not in the right
place.
rule test121
dialect mvel
when
TestObject( startDateDateUtils.parseDate(01/01/2009,
endDateDateUtils.parseDate(01/01/2008) ) )
then
end
This is what I expected. I guess guvnor is looking for the first ) and
add
the condition (start with -) before it. Actually it should look for the
last ) and add the condition before it.
rule test121
dialect mvel
when
TestObject( startDateDateUtils.parseDate(01/01/2009) ,
endDateDateUtils.parseDate(01/01/2008) )
then
end
This problem also exists in drools-5.1.1-guvnor. It will be great if it can
be fixed soon.
Thanks,
James
--
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http://drools.46999.n3.nabble.com/the-condition-starts-with-in-DSL-mapping-tp3098986p3098986.html
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Re: [rules-users] Guvnor Rules!!!
Have you looked at the mortgages example under the examples folder in the guvnor-distribution; http://download.jboss.org/drools/release/5.2.0.CR1/drools-distribution-5.2.0.CR1.zip ? There is a similar example for 5.1, but TBH I'm not sure of the location in either the download or internet. 2011/6/22 Sumeet Karawal sumeet.kara...@tcs.com Hi, I am not able to run Guvnor rules on eclipse. I have read the Knowledge Agent part from the user guide but not able to get through. I am doing the following steps: I have created a Java class in eclipse and exported it as a .jar file. Then I import it in Guvnor under the upload POJO Model. I create some rules for it Then I build the package and get the following URLs : URL for package documentation: http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/com.JBoss/LATEST/documentation.pdf(Embedded image moved to file: pic32197.gif) URL for package source: http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/com.JBoss/LATEST.drl(Embedded image moved to file: pic02151.gif) URL for package binary: http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/com.JBoss/LATEST(Embedded image moved to file: pic18827.gif) URL for running tests: http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/com.JBoss/LATEST/SCENARIOS(Embedded image moved to file: pic20956.gif) Change Set: http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/com.JBoss/LATEST/ChangeSet.xml(Embedded image moved to file: pic21205.gif) I have gone through use of KnowledgeAgent in the user guide but not getting how to do it. I mean what code should I write to get the KnowledgeBase from these URLs. It would be really helpful if someone could guide me on this. Thanks Regards, Sumeet Karawal Mailto: sumeet.kara...@tcs.com =-=-= Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Search function of Guvnor limited to filename search?
You are correct, we only search asset names, although you can also perform the Attribute search. If you have an idea for an enhancement (to search rules themselves) why not create a JIRA for consideration? In order to search rules themselves we'd need to store their equivalent plain-text DRL in the repository too. This, AFAIK, we do not. With kind regards, Mike On 23 June 2011 10:11, style.x7 style...@gmail.com wrote: Hi all, I've tried both 5.1 and 5.2 CR version of Guvnor, seems like the search function is limited to matching filenames, understand that the search function is powered by Lucene which should be more powerful :) Any way to get Guvnor perform full-text or relevance search on the rules? Thanks in advance. -- View this message in context: http://drools.46999.n3.nabble.com/Search-function-of-Guvnor-limited-to-filename-search-tp3099182p3099182.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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Guvnor guided editor problem - add more options
HI Mike, Sorry I did not reply yesterd (I was out of work on holiday) I decided to start again from scratch: 1. I downloaded (from www.jboss.org/jboss/downloads) jboss-as-distribution-6.0.0.Final.zip. Unzipped it and am able to run this version of the AS without a problem. 2. I then downloaded (from www.jboss.org/drools/downloads) drools-5.1.1-guvnor.war. I then copied this to the deploy folder for the AS server. I have attached a screenshot of what happens next. http://drools.46999.n3.nabble.com/file/n3099330/AS_Screen.jpg The AS then just sits at this screen. If I then try to access http://localhost:8080/drools-guvnor I get a http 404 error. At this point I tried stopping and restarting the AS. Part way through the start up I get an error stating DEPLOYMENTS MISSING DEPENDENCIES, as in this next screen shot: http://drools.46999.n3.nabble.com/file/n3099330/as_screen2.jpg Any advice woudl be much appreciated. - -- Best Regards Marros -- View this message in context: http://drools.46999.n3.nabble.com/Guvnor-guided-editor-problem-add-more-options-tp3087495p3099330.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] Guvnor guided editor problem - add more options
You can try this http://community.jboss.org/wiki/InstallingDroolsGuvnor50InTomcat6xAndJBossAS5, the same will probably apply to 5.1.1 too. Guvnor 5.2 has customised versions for various AS's (that basically remove unnecessary JARs). It should be available *today*. Have a look on http://www.jboss.org/drools/downloads.html later (if all goes well!) It is a shame, as a newbie, you are having this much problem :( With kind regards, Mike On 23 June 2011 11:18, marros martin.ros...@vships.com wrote: HI Mike, Sorry I did not reply yesterd (I was out of work on holiday) I decided to start again from scratch: 1. I downloaded (from www.jboss.org/jboss/downloads) jboss-as-distribution-6.0.0.Final.zip. Unzipped it and am able to run this version of the AS without a problem. 2. I then downloaded (from www.jboss.org/drools/downloads) drools-5.1.1-guvnor.war. I then copied this to the deploy folder for the AS server. I have attached a screenshot of what happens next. http://drools.46999.n3.nabble.com/file/n3099330/AS_Screen.jpg The AS then just sits at this screen. If I then try to access http://localhost:8080/drools-guvnor I get a http 404 error. At this point I tried stopping and restarting the AS. Part way through the start up I get an error stating DEPLOYMENTS MISSING DEPENDENCIES, as in this next screen shot: http://drools.46999.n3.nabble.com/file/n3099330/as_screen2.jpg Any advice woudl be much appreciated. - -- Best Regards Marros -- View this message in context: http://drools.46999.n3.nabble.com/Guvnor-guided-editor-problem-add-more-options-tp3087495p3099330.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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] the condition starts with - in DSL mapping
I didn't create a JIRA for this and I don't know where to create it. I know this bug exists in drools-5.1.1-guvnor because I am using both 5.1.1 and guvnor-5.2.0.CR1-jboss-as-5.1. Thanks, James -- View this message in context: http://drools.46999.n3.nabble.com/the-condition-starts-with-in-DSL-mapping-tp3098986p3099430.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] the condition starts with - in DSL mapping
OK, here's the link https://issues.jboss.org/browse/GUVNOR It's difficult for us to know what to fix when problems aren't recorded anywhere except emails (and even more so IRC). If you can attach a test repository export it makes tracking the bug down easier. If you want to attach a patch for review you'll have new friends for life ;) Cheers, Mike On 23 June 2011 11:57, James Gu j...@cnsh.delphi-tech.com wrote: I didn't create a JIRA for this and I don't know where to create it. I know this bug exists in drools-5.1.1-guvnor because I am using both 5.1.1 and guvnor-5.2.0.CR1-jboss-as-5.1. Thanks, James -- View this message in context: http://drools.46999.n3.nabble.com/the-condition-starts-with-in-DSL-mapping-tp3098986p3099430.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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] the condition starts with - in DSL mapping
On 23 June 2011 09:16, James Gu j...@cnsh.delphi-tech.com wrote:
Hi,
I am using guvnor-5.2.0.CR1-jboss-as-5.1. I found a bug in DSL mapping.
This is the DSL items.
[when]There is an TestObject=TestObject()
[when]-startDate is before {date}=startDateDateUtils.parseDate({date})
[when]-endDate is after {date}=endDateDateUtils.parseDate({date})
Although not relevant for the error in the DRL creation - please note that
the wording
of the second DSL item contradicts the expression it is translated into.
Also, the constraints (even if inserted properly into the pattern) will not
compile, either in 5.1.1 or in 5.2.x, because they are syntactically
incorrect.
-W
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[rules-users] Question on Drools migration from 3.0 to 5.1
Hi All,
We have an issue in rule when migrating drools from 3.0 to 5.1 with eval. To
demo this error, I use the following code:
public class Info {
public String getItem(int i) {
return item is + i;
}
}
In Drools 3.0, the following rule is fine:
rule test eval
salience 1
when
info : Info()
eval(into.getItem(0) != null)
then
System.out.println(test eval);
end
But when using drools 5.1, it shows error info can not be resolved. I found
a way to resolve this issue but don't know this is the best practice.
declare Item
name : String
end
rule insert item before eval
salience 0
when
info : Info()
then
Item item = new Item();
item.setName(info.getItem(0));
insert( item );
end
rule test eval
salience 1
when
item : Item(n : name)
eval( n != null)
then
System.out.println(test eval);
end
BTW, using declare in rule may cause memory leaking? We are seeing heap size
growing after migrated to 5.1.
Thanks,
Liqun
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[rules-users] Drools rules spring integration without using any persistence
Newbie here. Appreciate your help. I am trying to integrate only drools expert (rules) with spring without any persistence. In spring beans config, i have specified like this. When i start my local server, I received the following error. [PersistenceUnitDeployment] Starting persistence unit persistence.unit:unitName=#org.drools.grid ERROR [AbstractKernelController] Error installing to Start: name=persistence.unit:unitName=#org.drools.grid state=Create Specification violation [EJB3 JPA 6.2.1.2] - You have not defined a jta-data-source for a JTA enabled persistence context named: org.drools.grid Spring beans config ?xml version=1.0 encoding=UTF-8? beans xmlns=http://www.springframework.org/schema/beans; xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance; xmlns:drools=http://drools.org/schema/drools-spring; xsi:schemaLocation=http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://drools.org/schema/drools-spring http://drools.org/schema/drools-service-spring; drools:kbase id=kbase drools:resources drools:resource type=DRL source=classpath:testSpring.drl/drools:resource /drools:resources /drools:kbase drools:ksession id=statelessKSession type=stateless name=statelessKSession kbase=kbase/drools:ksession /beans -- View this message in context: http://drools.46999.n3.nabble.com/Drools-rules-spring-integration-without-using-any-persistence-tp3100014p3100014.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] Troubles with Oryx designer in Guvnor - jBPM 5.1.CR1
Guys, I reconfigured my logging system, and found these lines: http://localhost:8080/drools-guvnor/rest/packages/ Successfully deleted file :C:\Program Files\java\apache-tomcat-6.0.32\webapps\designer\stencilsets/bpmn2.0jbpm/bpmn2.0jbpm.json Created file:C:\Program Files\java\apache-tomcat-6.0.32\webapps\designer\stencilsets/bpmn2.0jbpm/bpmn2.0jbpm.json Unable to connect to Gunvor. Is it running? [http://localhost:8080/*drools-guvnor*/org.drools.guvnor.Guvnor/oryxeditor?uuid=8b2cb280-c92c-4a61-81eb-8daddd596f87usr=adminpwd=admin] And I realized that I was running Guvnor under http://localhost:8080/guvnor/ . Surely there is a config file that says what is Guvnor's url for Oryx. I changed the deploy directory and it works fine. Thanks, Roger -- View this message in context: http://drools.46999.n3.nabble.com/Troubles-with-Oryx-designer-in-Guvnor-jBPM-5-1-CR1-tp3088609p3100628.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] problems with process executions, constraints, and multiple sessions
Hello, regarding this point, As a temporal patch, we have tried to directly modify drools-jpa module behaviour by: - Adding a new attribute to org.drools.persistence.processinstance.ProcessInstanceInfo POJO identifying the stateful session to which the process instance corresponds (and the corresponding DB column). - modifying the ProcessInstancesWaitingForEvent query in order to take into account the session id as a (new) second parameter. - modify the class org.drools.persistence.processinstance.JPASignalManager in order to execute the query with both parameters. - as a quick way to have the session id, we have a threadlocal. After these modifications have been performed, the execution of processes with intensive use of wait states has executed correctly, and no confussion has been detected between process instances after the execution of some stress tests that previously originated a lot of instances of the problem. We will open an incident in Drools-JIRA regarding this issue. best regards, Jordi Alvarez 2011/6/22 Jordi Alvarez jalvar...@gmail.com Hi, after a bit more of study we have seen that the problem is in the JPA Query defined in META-INF/orm.xml of drools-persistence-jpa-5.1.1.jar (ProcessInstancesWaitingForEvent). This query, for version 5.1.1 of drools seems not to be prepared for storing multiple stateful sessions in the same database schema. In fact, the original query we got from the .jar was not properly working, and, while in project startup, we created our own orm.xml file with an updated query, such as described in: http://www.mail-archive.com/rules-users@lists.jboss.org/msg16068.html But the good query (and also the original in the jar file) seems to be not prepared for working with more than one stateful session stored in the same database schema and having exactly the same constraint activated. Should we open a JIRA for this? We have looked at source code in version 5.2 / jBPM 5, and the query is similar, with no reference to the stateful session. It should really be prepared for multiple sessions stored in the same database schema? thanks again, Jordi Alvarez 2011/6/22 Jordi Alvarez jalvar...@gmail.com Hello, I am involved in a project in which we are using Drools as the BPM. We are experiencing some problems with wait state nodes. More concretely, the problem seems to deal with the execution of constraints in those wait states. Let me first describe our context: We are using JPA with Hibernate and Oracle. Our process instances are all identified by a business identifier (a string). This business identified would correspond to the identifier of a case; and a case normally has associated a process instances (and subprocesses of that process). Additionally, the processes we have developed make extensive use of timers and wait states with constraints that refer to the process instance and other facts that we are using as events. We have a stateful session for every case / business identifier. We have a main process that calls subprocesses. As we said, in that process and subprocesses we use wait states. The constraints in those wait states are waiting for a fact to be inserted in the stateful session. Once the corresponding fact is inserted, the corresponding constraint should be activated. At this point is where the problem arises. All the constraints have been unit tested with no problem at all. But we have detected some problems that can arise when there is more that one process waiting in the same wait state (every process in a different Drools stateful session). The situation is as follows: 1. There is a main process instance MPA with business id BA that has a subprocess SPA (also with the same business id). This subprocess is waiting in a given wait state W1 (these processes are running in the stateful session corresponding to the business id BA, from now on SA). 2. There is a second main process and subprocess with business id BB. The state for these second set of processes is the same one, and they are running in a second stateful session (the one for business id BB), from now on SB. 3. A fact FA is inserted in SA. This fact makes the constaint in SPA true, which makes SPA to leave the wait state and continue with the execution. Then, in some situations stateful session SA tries to also continue SPB, which runs in a different stateful session (that of SB). That, of course, produces some posterior problems that were the origin of our investigations. After some more deep investigations, it seems that the reason session SA tries to continue SPB is that the constraint in W1 for SPA gets activated twice. We have detected (and posteriorly corrected) some situations in which this happens. For example: the process in the constraint was associated not only to SPA but to other processes in SA (the main process SPA for example). we corrected this and obtained a better behaviour in which
Re: [rules-users] Troubles with Oryx designer in Guvnor - jBPM 5.1.CR1
On 6/23/11 1:05 PM, roger wrote: Surely there is a config file that says what is Guvnor's url for Oryx. $designer_war/profiles/jbpm.xml bottom on this file contains what you are looking for: externalloadurl protocol=http host=localhost:8080 subdomain=drools-guvnor/org.drools.guvnor.Guvnor/oryxeditor usr=admin pwd=admin/ Hope this helps. Thanks. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] usage of @startTimestamp
Hi everybody, I am delepoing an application using Drools to correlate events from a network management system. Can anyone recommend me a good tutorial which teaches how to use real time clock ? I am using the book of Michal Bali, which is very good indeed. The book examples uses the following code: clock.advanceTime(*xx seconds*, TimeUnit.SECONDS); However, I would like to use the property of an event called *startTime *and *endTime *which means the time on which the event starts and the time the event finishes. I know there is the property @startTimestamp mentioned at the book. But, where can I find more examples of usage of @startTimestamp in rule files ? Best Regards, * Lavoisier José Leite Farias* Skype: lavoisierfarias Twitter: http://twitter.com/LavoisierFarias ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Drools 5.2.0.Final released
The Drools community is happy to announce the release of *Drools 5.2.0.Final*. This includes: * Drools Expert (rule engine) * Drools Fusion (CEP: complex event processing) * Drools Planner (planning optimization) * Guvnor (BRMS web application) * Drools IDE (Eclipse plugin) Read the release announcement: http://blog.athico.com/2011/06/drools-52-released.html -- With kind regards, The Drools team ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Avoid evaluation of expensive LHS terms
Stumbled over this today in a specific case, but my question is about a general practice (I'm quite new to Drools, 5.2.0.M2 btw). I have a knowledge session with a fair amount of facts (0.5 Mio) and mostly simple rules. One rule has a LHS expression that I know will be expensive to execute, in the example that I encountered this it looks like: rule Count facts when all : Number() from accumulate (s : X(), count(s)) blacklisted : Number() from accumulate (s : X(status == X.BLACKLISTED), count(s)) then end I want to execute this rule only after other rules have already executed (and changed the status of most of the X facts). There's quite a number of X facts (~200'000). Most of them have their status modified during execution of other rules. If I run the rule base without the above rules, performance is perfect, some tens of seconds. If I activate the rule, execution never finishes (I stop it after a few minutes, never saw it finished). I *THINK* (correct me if I'm wrong) what happens is that especially the second expression of the LHS gets executes over and over again whenever one of the facts is modified by one of the other rules. Makes sense, but I nevertheless want to try to avoid it. Until now I tried unsuccessfully: - protect the rule with a guard fact as the first expression, which is inserted only late in the processing - move the rule to another ruleflow-group (or agenda-group) and activate it only at the end of the processing - use the rule in a second independent knowledge base and session, and insert the facts once the first has finished I'm perfectly aware that I could solve this specific problem of counting facts with different techniques, but my question is more general (as the subject says). Because I have other cases where (as a last resort) I need to go to a database or online service to get the required information. It seems that others have similar problems (http://drools.46999.n3.nabble.com/Short-circuiting-evaluations-on-LHS-td56379.html). But in my experience, that technique (protecting the expensive pattern in the LHS with a cheap one that evaluates to false until you really need the expensive one) does not work. I get the impression that (contrary to popular experience that a false value in an AND sequence terminates the whole sequence) the drools LHS are processed differently. Am I missing something really stupid?! -- CU, Joe ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Avoid evaluation of expensive LHS terms
Have you tried salience? On 23 June 2011 20:20, Joe Ammann j...@pyx.ch wrote: Stumbled over this today in a specific case, but my question is about a general practice (I'm quite new to Drools, 5.2.0.M2 btw). I have a knowledge session with a fair amount of facts (0.5 Mio) and mostly simple rules. One rule has a LHS expression that I know will be expensive to execute, in the example that I encountered this it looks like: rule Count facts when all : Number() from accumulate (s : X(), count(s)) blacklisted : Number() from accumulate (s : X(status == X.BLACKLISTED), count(s)) then end I want to execute this rule only after other rules have already executed (and changed the status of most of the X facts). There's quite a number of X facts (~200'000). Most of them have their status modified during execution of other rules. If I run the rule base without the above rules, performance is perfect, some tens of seconds. If I activate the rule, execution never finishes (I stop it after a few minutes, never saw it finished). I *THINK* (correct me if I'm wrong) what happens is that especially the second expression of the LHS gets executes over and over again whenever one of the facts is modified by one of the other rules. Makes sense, but I nevertheless want to try to avoid it. Until now I tried unsuccessfully: - protect the rule with a guard fact as the first expression, which is inserted only late in the processing - move the rule to another ruleflow-group (or agenda-group) and activate it only at the end of the processing - use the rule in a second independent knowledge base and session, and insert the facts once the first has finished I'm perfectly aware that I could solve this specific problem of counting facts with different techniques, but my question is more general (as the subject says). Because I have other cases where (as a last resort) I need to go to a database or online service to get the required information. It seems that others have similar problems ( http://drools.46999.n3.nabble.com/Short-circuiting-evaluations-on-LHS-td56379.html ). But in my experience, that technique (protecting the expensive pattern in the LHS with a cheap one that evaluates to false until you really need the expensive one) does not work. I get the impression that (contrary to popular experience that a false value in an AND sequence terminates the whole sequence) the drools LHS are processed differently. Am I missing something really stupid?! -- CU, Joe ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] usage of @startTimestamp
The Drools Fusion documentation has a good explanation of how to define an event, including the use of the @timestamp attribute. http://docs.jboss.org/drools/release/5.2.0.Final/drools-fusion-docs/html/ch02.html#d0e184 From: rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org] On Behalf Of Lavoisier Farias Sent: Thursday, June 23, 2011 11:45 AM To: rules-users@lists.jboss.org Subject: [rules-users] usage of @startTimestamp Hi everybody, I am delepoing an application using Drools to correlate events from a network management system. Can anyone recommend me a good tutorial which teaches how to use real time clock ? I am using the book of Michal Bali, which is very good indeed. The book examples uses the following code: clock.advanceTime(xx seconds, TimeUnit.SECONDS); However, I would like to use the property of an event called startTime and endTime which means the time on which the event starts and the time the event finishes. I know there is the property @startTimestamp mentioned at the book. But, where can I find more examples of usage of @startTimestamp in rule files ? Best Regards, Lavoisier José Leite Farias Skype: lavoisierfarias Twitter: http://twitter.com/LavoisierFarias ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] usage of @startTimestamp
Hi Nathan, thank you very much!! 2011/6/23 Nathan Bell nathan.b...@pharmacyonesource.com The Drools Fusion documentation has a good explanation of how to define an event, including the use of the @timestamp attribute. ** ** http://docs.jboss.org/drools/release/5.2.0.Final/drools-fusion-docs/html/ch02.html#d0e184 ** ** ** ** *From:* rules-users-boun...@lists.jboss.org [mailto: rules-users-boun...@lists.jboss.org] *On Behalf Of *Lavoisier Farias *Sent:* Thursday, June 23, 2011 11:45 AM *To:* rules-users@lists.jboss.org *Subject:* [rules-users] usage of @startTimestamp ** ** Hi everybody, I am delepoing an application using Drools to correlate events from a network management system. Can anyone recommend me a good tutorial which teaches how to use real time clock ? I am using the book of Michal Bali, which is very good indeed. The book examples uses the following code: clock.advanceTime(*xx seconds*, TimeUnit.SECONDS); However, I would like to use the property of an event called *startTime *and *endTime *which means the time on which the event starts and the time the event finishes. I know there is the property @startTimestamp mentioned at the book. But, where can I find more examples of usage of @startTimestamp in rule files ? Best Regards, * Lavoisier José Leite Farias* Skype: lavoisierfarias Twitter: http://twitter.com/LavoisierFarias ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- *Abraços, Lavoisier José Leite Farias* Skype: lavoisierfarias Celular: 019-8122-1177 Twitter: http://twitter.com/LavoisierFarias ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Building
Hello EveryOne, I am new to drools and I have couple of questions. 1. How to build group of .drl files as a package and load it into the session. 2. Is there a way to see what rules are loaded into the session programatically Thank you very much, Harish Kukatla. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Avoid evaluation of expensive LHS terms
On 23.06.2011 21:27, Michael Anstis wrote: Have you tried salience? Yeah, sorry forgot to mention. THis was the first thing I tried. -- CU, Joe ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Guvnor Rules!!!
I downloaded from the link, but I am not able to find the mortgages example there. Thanks Regards, Sumeet Karawal From: Michael Anstis michael.ans...@gmail.com To: Rules Users List rules-users@lists.jboss.org Date: 06/23/2011 03:19 PM Subject:Re: [rules-users] Guvnor Rules!!! Sent by:rules-users-boun...@lists.jboss.org Have you looked at the mortgages example under the examples folder in the guvnor-distribution; http://download.jboss.org/drools/release/5.2.0.CR1/drools-distribution-5.2.0.CR1.zip ? There is a similar example for 5.1, but TBH I'm not sure of the location in either the download or internet. 2011/6/22 Sumeet Karawal sumeet.kara...@tcs.com Hi, I am not able to run Guvnor rules on eclipse. I have read the Knowledge Agent part from the user guide but not able to get through. I am doing the following steps: I have created a Java class in eclipse and exported it as a .jar file. Then I import it in Guvnor under the upload POJO Model. I create some rules for it Then I build the package and get the following URLs : URL for package documentation: http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/com.JBoss/LATEST/documentation.pdf (Embedded image moved to file: pic32197.gif) URL for package source: http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/com.JBoss/LATEST.drl (Embedded image moved to file: pic02151.gif) URL for package binary: http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/com.JBoss/LATEST (Embedded image moved to file: pic18827.gif) URL for running tests: http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/com.JBoss/LATEST/SCENARIOS (Embedded image moved to file: pic20956.gif) Change Set: http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/com.JBoss/LATEST/ChangeSet.xml (Embedded image moved to file: pic21205.gif) I have gone through use of KnowledgeAgent in the user guide but not getting how to do it. I mean what code should I write to get the KnowledgeBase from these URLs. It would be really helpful if someone could guide me on this. Thanks Regards, Sumeet Karawal Mailto: sumeet.kara...@tcs.com =-=-= Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
