Re: [rules-users] DROOLS PLANNER - getting started
Take a look at the manual on how to get started: http://docs.jboss.org/drools/release/5.2.0.CR1/drools-planner-docs/html_single/index.html#d0e137 To get started in Eclipse, either just download the zip and add the jar binaries to your classpath. (Or better: use maven (with optionally m2eclipse), ivy, gradle to depend on our artifacts declaratively) Then just build a solver: http://docs.jboss.org/drools/release/5.2.0.CR1/drools-planner-docs/html_single/index.html#d0e1279 and learn from the NQueens and curriculum course example. -- View this message in context: http://drools.46999.n3.nabble.com/DROOLS-PLANNER-getting-started-tp3030567p3033528.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] DROOLS PLANNER - getting started
Do I need Guvnor also for defining rules? No, that's an optional improvement you can try to use later. Start with using plain drl files like in the examples. The integration between Guvnor and Planner is still very raw, but it's possible via *SolverConfig.setRuleBase(). -- View this message in context: http://drools.46999.n3.nabble.com/DROOLS-PLANNER-getting-started-tp3030567p3033533.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] Exception Handling in the rule
Firstly evals have to evaluate true or false - what you have here appears to return a string - presumably you are actually comparing this to some value? One, not particularly elegant or efficient method is to do the check within your eval, eg: eval(ClaimsHistoryHelper.getClaimDrug(drugRefNo) == null ? false : drugName == (ClaimsHistoryHelper.getClaimDrug(drugRefNo)).getDrugName()) If your ClaimsHistoryHelper is doing a time consuming operation (eg going to a db etc), you can probably make a very quick and simple efficiency saving by having it cache the last result it searched for/returned (or depending on how many drugRefNo you are looking up a more complete caching solution). Thomas -Original Message- From: rules-users-boun...@lists.jboss.org [mailto:rules-users- boun...@lists.jboss.org] On Behalf Of sdinoo Sent: 07 June 2011 06:22 To: rules-users@lists.jboss.org Subject: [rules-users] Exception Handling in the rule Hi, In my when clause I have an eval statement like this eval((ClaimsHistoryHelper.getClaimDrug(drugRefNo)).getDrugName()) For some reason, there is no DrugRecord for the given drugRefNo and hence I get javaNullPointer exceptions I do want to rule to continue evaluation and not stop with the error and hence I dont want to handle exception at fireAllRules catch block How can I handle the exception in the DRL ? -- View this message in context: http://drools.46999.n3.nabble.com/Exception- Handling-in-the-rule-tp3033223p3033223.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 ** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmas...@nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603 8808 40-00 ** ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Out of Memory Exception While Running Rule
I uploaded a decision table with 2200 rules in a package and when I tried to build the package it throws Exception : java.lang.OutOfMemoryError: PermGen space while its working fine with 1200 rules. Heap size is set to max 1536 (as JBoss in my pc is not accepting more than that size). Please let me know how I deal with this error at the time of building package, as my requirement is to have around 13000 rules in a single package. - Satyendra Sharma -- View this message in context: http://drools.46999.n3.nabble.com/Out-of-Memory-Exception-While-Running-Rule-tp3033829p3033829.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] Out of Memory Exception While Running Rule
You may need to increase the perm gen space not the heap size -XX:MaxPermSize=512m Thomas -Original Message- From: rules-users-boun...@lists.jboss.org [mailto:rules-users- boun...@lists.jboss.org] On Behalf Of Satyendra Sharma Sent: 07 June 2011 10:51 To: rules-users@lists.jboss.org Subject: [rules-users] Out of Memory Exception While Running Rule I uploaded a decision table with 2200 rules in a package and when I tried to build the package it throws Exception : java.lang.OutOfMemoryError: PermGen space while its working fine with 1200 rules. Heap size is set to max 1536 (as JBoss in my pc is not accepting more than that size). Please let me know how I deal with this error at the time of building package, as my requirement is to have around 13000 rules in a single package. - Satyendra Sharma -- View this message in context: http://drools.46999.n3.nabble.com/Out-of- Memory-Exception-While-Running-Rule-tp3033829p3033829.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 ** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmas...@nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603 8808 40-00 ** ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Need Drools 5.1 in .NET
Hi, We are trying to use the Drools 5.1 engine in a .NET application and hence have been trying to convert the JAR files to DLLs. We use IKVM 0.46.* for the conversion. We have added all the JARs from the drools 5.1 package to the CLASSPATH. We run the command: ikvmc -target:library drools-api-5.1.1.jar The output we get is similar to: Note IKVMC0002: output file is drools-api-5.1.1.dll Warning IKVMC0100: class org.quartz.Calendar not found Warning IKVMC0111: emitted java.lang.NoClassDefFoundError in org.drools.runtime .help.QuartzHelper$QuartzCalendarAdapter.isTimeIncluded(J)Z Warning IKVMC0100: class com.sun.tools.xjc.Options not found Warning IKVMC0105: unable to compile class org.drools.osgi.api.Activator$Drools (org.quartz.Calendar) Warning IKVMC0100: class com.thoughtworks.xstream.XStream not found ServiceTracker (missing class org.osgi.util.tracker.ServiceTrackerCustomizer) Warning IKVMC0105: unable to compile class org.drools.osgi.api.Activator (missing class org.osgi.framework.BundleActivator) Warning IKVMC0100: class org.osgi.framework.BundleContext not found Warning IKVMC0100: class org.osgi.framework.ServiceReference not found Warning IKVMC0100: class org.drools.osgi.api.Activator not found Warning IKVMC0111: emitted java.lang.NoClassDefFoundError in org.drools.osgi.ap i.Activator$BundleContextInstantiator.call()Ljava.lang.Object; (org.osgi.framework.BundleContext) We have done the above process for all the JAR files in the drools folder. The DLLs do get created and we are able to compile our .NET application to use the classes. But during execution at: KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); We get the exception that says: - IllegalArgumentException : Unable to instantiate service for Class 'org.drools.builder.KnowledgeBuilderFactoryService - ClassNotFoundException: org.drools.builder.impl.KnowledgeBuilderFactoryServiceImpl The jar files are already in the CLASSPATH when we run the .NET app . I am not sure whether these errors are due to the Warnings we see during conversion. If anyone has been successful in obtaining a DLL from drools 5.1, kindly let me know the steps. Thanks and regards, Yash -- View this message in context: http://drools.46999.n3.nabble.com/Need-Drools-5-1-in-NET-tp3034264p3034264.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] Need Drools 5.1 in .NET
Have you also converted drools-compiler-x.jar? Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com On Tue, Jun 7, 2011 at 9:41 AM, yashgt yas...@gmail.com wrote: KnowledgeBuilderFactoryService ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Need Drools 5.1 in .NET
You will need ot do this for all the transititive dependencies too. Quartz is an optional dependency JAR, seems IKVM is insisting those are available on the .net classpath. Maven will output a graph of transititive dependencies for you to view. Once you get this working, please post details online :) http://maven.apache.org/plugins/maven-dependency-plugin/tree-mojo.html Mark On 07/06/2011 13:41, yashgt wrote: Hi, We are trying to use the Drools 5.1 engine in a .NET application and hence have been trying to convert the JAR files to DLLs. We use IKVM 0.46.* for the conversion. We have added all the JARs from the drools 5.1 package to the CLASSPATH. We run the command: ikvmc -target:library drools-api-5.1.1.jar The output we get is similar to: Note IKVMC0002: output file is drools-api-5.1.1.dll Warning IKVMC0100: class org.quartz.Calendar not found Warning IKVMC0111: emitted java.lang.NoClassDefFoundError in org.drools.runtime .help.QuartzHelper$QuartzCalendarAdapter.isTimeIncluded(J)Z Warning IKVMC0100: class com.sun.tools.xjc.Options not found Warning IKVMC0105: unable to compile class org.drools.osgi.api.Activator$Drools (org.quartz.Calendar) Warning IKVMC0100: class com.thoughtworks.xstream.XStream not found ServiceTracker (missing class org.osgi.util.tracker.ServiceTrackerCustomizer) Warning IKVMC0105: unable to compile class org.drools.osgi.api.Activator (missing class org.osgi.framework.BundleActivator) Warning IKVMC0100: class org.osgi.framework.BundleContext not found Warning IKVMC0100: class org.osgi.framework.ServiceReference not found Warning IKVMC0100: class org.drools.osgi.api.Activator not found Warning IKVMC0111: emitted java.lang.NoClassDefFoundError in org.drools.osgi.ap i.Activator$BundleContextInstantiator.call()Ljava.lang.Object; (org.osgi.framework.BundleContext) We have done the above process for all the JAR files in the drools folder. The DLLs do get created and we are able to compile our .NET application to use the classes. But during execution at: KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); We get the exception that says: - IllegalArgumentException : Unable to instantiate service for Class 'org.drools.builder.KnowledgeBuilderFactoryService - ClassNotFoundException: org.drools.builder.impl.KnowledgeBuilderFactoryServiceImpl The jar files are already in the CLASSPATH when we run the .NET app . I am not sure whether these errors are due to the Warnings we see during conversion. If anyone has been successful in obtaining a DLL from drools 5.1, kindly let me know the steps. Thanks and regards, Yash -- View this message in context: http://drools.46999.n3.nabble.com/Need-Drools-5-1-in-NET-tp3034264p3034264.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] Out of Memory Exception While Running Rule
On 07/06/2011 11:46, Swindells, Thomas wrote: You may need to increase the perm gen space not the heap size -XX:MaxPermSize=512m you can also try using the MVEL dialect instead. Mark Thomas -Original Message- From: rules-users-boun...@lists.jboss.org [mailto:rules-users- boun...@lists.jboss.org] On Behalf Of Satyendra Sharma Sent: 07 June 2011 10:51 To: rules-users@lists.jboss.org Subject: [rules-users] Out of Memory Exception While Running Rule I uploaded a decision table with 2200 rules in a package and when I tried to build the package it throws Exception : java.lang.OutOfMemoryError: PermGen space while its working fine with 1200 rules. Heap size is set to max 1536 (as JBoss in my pc is not accepting more than that size). Please let me know how I deal with this error at the time of building package, as my requirement is to have around 13000 rules in a single package. - Satyendra Sharma -- View this message in context: http://drools.46999.n3.nabble.com/Out-of- Memory-Exception-While-Running-Rule-tp3033829p3033829.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 ** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmas...@nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603 8808 40-00 ** ___ 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] Need Drools 5.1 in .NET
The compile-x.jar has also been converted. In fact all the jar files have been converted. IKVMC does the conversion. I would assume that as long as all the original JARs are in the classpath, IKVMC should not have any issue in the conversion and things should go through smoothly. Am I getting the error because the conversion had warnings or because the of something else? Regards, Yash -- View this message in context: http://drools.46999.n3.nabble.com/Need-Drools-5-1-in-NET-tp3034264p3034434.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] Out of Memory Exception While Running Rule
I have run several times this number of rules with Drools. Mark is right that adding Permgen space will help, but you can also reduce the size of your identifiers to use less Permgen memory. The harder issue to handle is running out of heap memory if you run a few thousand more rules: at some point the time required for compiling rules and inserting objects goes up dramatically due to thrashing. -- View this message in context: http://drools.46999.n3.nabble.com/Out-of-Memory-Exception-While-Running-Rule-tp3033829p3035881.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] Lazy (Just-In-Time) Loading of Facts
I'm new to Drools, and really need to know if the engine can support lazy loading of fact objects using declared types. Maybe I'm coming at this wrong, but I want to avoid retrieval for attributes that are not referenced during rule execution, and only retrieve attributes as the first time they are used in the current evaluation as some objects could come from database or other systems. In coding terms: if x==false y==true then, I should never need to retrieve 'y'. In addition, I cannot use pojo's at design time, as my data structures are defined by the business and loaded at runtime, so I tried looking at declared types, but I'm not certain these will support lazy loading. Thanks, Danny -- View this message in context: http://drools.46999.n3.nabble.com/Lazy-Just-In-Time-Loading-of-Facts-tp3036267p3036267.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] TimerService vs TimeMachine and date-effective
On 07/06/2011 21:35, David Goldstein wrote:
Mark,
Thanks. Based upon your discussion and the manuals, I was looking for
the Quartz jars but haven't been seeing them. Are they bundled? From
the org.drools.runtime I am wondering if I should be instead
implemeting org,drools.runtime.Calendars?
Drools doesn't use quartz scheduler. What we do allow is a quartz
calender to be used. We have our own calendar interface, but provide an
adapter so our scheduler can work with a quartz calendar.
Mark
By the way, often in Drools I see an API to get from a list or hashmap
of something (e.g., calendars, working memories,
workingmemoryinstances). However, if you have only one of the things
(like one calendar or one session) what should I pass to the
.get(string) method to access the one item?
Also, the source code includes SCenarioRunner.java which seems to be
no longer valid.
Thanks.
David
On Mon, Jun 6, 2011 at 10:41 AM, Mark Proctormproc...@codehaus.org wrote:
On 06/06/2011 15:32, drda...@gmail.com wrote:
Mark,
I thought I had submitted a follow-up to this, but perhaps not. I'm
sending this to you instead of the list to avoid generating excess traffic.
I looked at CR1 and am going to look at it's source today. But neither
the examples in the Drools PDF or Quartz look compatible for a clock that
would work with date-expires and date-effective of rules. Quartz looks
great for rules, processes and events that run on heatbeats (e.g., a cron
schedule) but it looks so foreign for use as a system clock I wonder if
date-expires and date-effective have been tested with the clock? Might you
have an example or JUnit for this setup?
I will look for one in Guvnor's source code today, where rule testing with
a simulated date should have a JUnit.
This is in Rule and shows how effective dating works.
Calendar now = Calendar.getInstance();
now.setTimeInMillis(
workingMemory.getSessionClock().getCurrentTime() );
if ( this.dateEffective != null this.dateExpires != null ) {
return (now.after( this.dateEffective ) now.before(
this.dateExpires ));
} else if ( this.dateEffective != null ) {
return (now.after( this.dateEffective ));
} else {
return (now.before( this.dateExpires ));
}
Unit testing should use the Pseduo clock, for the session clock, where you
can manually set the time.
Mark
Thanks!
David Goldstein
quote author='Mark Proctor'
On 01/06/2011 21:37, drdaveg wrote:
A common issue that I am looking into is setting the execution date to
test
future or legacy rules (i.e., with dates that are not the system date.)
A
number of users have posted about TimeMachine, TimeServices and the
perils
of setting the system date - but a JIRA lists TimeMachine as being remove
and TimeServices doesn't look like it has a setter for the execution
time.
What is the API for simulating the date to be compared against effective
and
expiration dates of rules that can be used by stateful sessions?
in upcoming drools 5.2, see CR1. TimeMachine was removed. Everything
should now work around the session clock, where it can use the system
clock or a pseudo clock.
Mark
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