[rules-users] 7x slower .DRL compilation after switching 5.1.1 to 5.2.0
Hi, while we used on Drools 5.1.1 our rules compiled in approx 1 min, after switching to 5.2.0 the compilation time increased to approx 7 mins. Our compilation is performed programmatically via KnowledgeBuilder by the user application itself. What we are possibly doing wrong? Just to mention that after the switch our .DRL code that compiled successfully under 5.1.1 needed much fixing, because it completely broke under the 5.2.0 (more strict type casting, || became or, access to static Java methods and fields requires now explicit class imports instead of the package imports as before, etc.). I searched but didn't find any migration guide. Is something like that available? Regards, Victor -- View this message in context: http://drools.46999.n3.nabble.com/7x-slower-DRL-compilation-after-switching-5-1-1-to-5-2-0-tp3417952p3417952.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 comprehensible drools examples
Hi Martin, Thanks for the info, I 'll take a look at it. Which IDE did you use? to import the existing maven project? Op 12-10-11 16:22, Martin A schreef: What I did was to extract the folder examples/sources and import it as an existing maven project. When I did, the rules were full of messages, such as : cannot resolve type, mismatched token, etc. Besides of that, when tried to run any of the samples by running runExamples.bat and clicking on an example listitem I was getting this message: Exception in thread AWT-EventQueue-0 java.lang.NoClassDefFoundError: org/drool s/builder/ResourceConfiguration at org.drools.examples.DroolsExamplesApp$12.actionPerformed(DroolsExampl esApp.java:126) Thank you, Martin 2011/10/12 Geoffrey De Smet ge0ffrey.s...@gmail.com mailto:ge0ffrey.s...@gmail.com Hi Martin, full of improper project configuration Could you explain what you mean by this? What did you try and didn't work? We 'd like to improve it for the next release. Op 12-10-11 16:06, Martin A schreef: Hi Geoffrey, Yes, I think I experienced problems with these ones... @Mauricio: Thanks for the other link! Regards, Martin 2011/10/12 Geoffrey De Smet ge0ffrey.s...@gmail.com mailto:ge0ffrey.s...@gmail.com Martin, The several examples projects I found are full of improper project configuration. Which examples are you referring to in this statement? Are you referring to the examples directory found in the download zip? http://download.jboss.org/drools/release/5.3.0.CR1/drools-distribution-5.3.0.CR1.zip Op 12-10-11 15:07, Mauricio Salatino schreef: The examples that I've provided are very basic.. if you want to see more advanced stuff you can go to github and get the official set of examples from there: https://github.com/droolsjbpm/drools/tree/master/drools-examples 2011/10/12 Martin A wml...@gmail.com mailto:wml...@gmail.com Hi Mauricio, These examples look good enough for this kind of framework introduction I need! Thanks for the prompt response and for the good reference! However, if you know other examples that may help me get into Drools quicker, I'd be glad if you give me some links :) Best regards, Martin 2011/10/12 Mauricio Salatino sala...@gmail.com mailto:sala...@gmail.com Hi Martin, what kind of examples are you looking for? Here I'm writing with a couple of friends a set of examples that will be improved over the time. All the examples are using maven, that really helps in the configuration side and most of them are very introductory, but as I mention we are hoping to get feedback so we can improve them. https://github.com/Salaboy/Drools_jBPM5-Training-Examples Cheers 2011/10/12 Martin A wml...@gmail.com mailto:wml...@gmail.com Hello, guys, I've been looking for nice and clear drools examples for the whole day so far, but can't find any. The several examples projects I found are full of improper project configuration. Would you please refer me to a reliable drools examples source projects? Thanks in advance! ___ rules-users mailing list rules-users@lists.jboss.org mailto:rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - CTO @ http://www.plugtree.com - MyJourney @ http://salaboy.wordpress.com - Co-Founder @ http://www.jugargentina.org - Co-Founder @ http://www.jbug.com.ar - Salatino Salaboy Mauricio - ___ rules-users mailing list rules-users@lists.jboss.org mailto:rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org mailto:rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - CTO @ http://www.plugtree.com - MyJourney @ http://salaboy.wordpress.com - Co-Founder @ http://www.jugargentina.org - Co-Founder @ http://www.jbug.com.ar - Salatino Salaboy Mauricio -
Re: [rules-users] Need comprehensible drools examples
Martin, Another big question: Did you try 5.2.0.Final (the first download on the page) or 5.3.0.CR1? I did several fixes for the runExamples.bat script for 5.3.0.CR1. Op 13-10-11 09:46, Geoffrey De Smet schreef: Hi Martin, Thanks for the info, I 'll take a look at it. Which IDE did you use? to import the existing maven project? Op 12-10-11 16:22, Martin A schreef: What I did was to extract the folder examples/sources and import it as an existing maven project. When I did, the rules were full of messages, such as : cannot resolve type, mismatched token, etc. Besides of that, when tried to run any of the samples by running runExamples.bat and clicking on an example listitem I was getting this message: Exception in thread AWT-EventQueue-0 java.lang.NoClassDefFoundError: org/drool s/builder/ResourceConfiguration at org.drools.examples.DroolsExamplesApp$12.actionPerformed(DroolsExampl esApp.java:126) Thank you, Martin 2011/10/12 Geoffrey De Smet ge0ffrey.s...@gmail.com mailto:ge0ffrey.s...@gmail.com Hi Martin, full of improper project configuration Could you explain what you mean by this? What did you try and didn't work? We 'd like to improve it for the next release. Op 12-10-11 16:06, Martin A schreef: Hi Geoffrey, Yes, I think I experienced problems with these ones... @Mauricio: Thanks for the other link! Regards, Martin 2011/10/12 Geoffrey De Smet ge0ffrey.s...@gmail.com mailto:ge0ffrey.s...@gmail.com Martin, The several examples projects I found are full of improper project configuration. Which examples are you referring to in this statement? Are you referring to the examples directory found in the download zip? http://download.jboss.org/drools/release/5.3.0.CR1/drools-distribution-5.3.0.CR1.zip Op 12-10-11 15:07, Mauricio Salatino schreef: The examples that I've provided are very basic.. if you want to see more advanced stuff you can go to github and get the official set of examples from there: https://github.com/droolsjbpm/drools/tree/master/drools-examples 2011/10/12 Martin A wml...@gmail.com mailto:wml...@gmail.com Hi Mauricio, These examples look good enough for this kind of framework introduction I need! Thanks for the prompt response and for the good reference! However, if you know other examples that may help me get into Drools quicker, I'd be glad if you give me some links :) Best regards, Martin 2011/10/12 Mauricio Salatino sala...@gmail.com mailto:sala...@gmail.com Hi Martin, what kind of examples are you looking for? Here I'm writing with a couple of friends a set of examples that will be improved over the time. All the examples are using maven, that really helps in the configuration side and most of them are very introductory, but as I mention we are hoping to get feedback so we can improve them. https://github.com/Salaboy/Drools_jBPM5-Training-Examples Cheers 2011/10/12 Martin A wml...@gmail.com mailto:wml...@gmail.com Hello, guys, I've been looking for nice and clear drools examples for the whole day so far, but can't find any. The several examples projects I found are full of improper project configuration. Would you please refer me to a reliable drools examples source projects? Thanks in advance! ___ rules-users mailing list rules-users@lists.jboss.org mailto:rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - CTO @ http://www.plugtree.com - MyJourney @ http://salaboy.wordpress.com - Co-Founder @ http://www.jugargentina.org - Co-Founder @ http://www.jbug.com.ar - Salatino Salaboy Mauricio - ___ rules-users mailing list rules-users@lists.jboss.org mailto:rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org mailto:rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users --
Re: [rules-users] Need comprehensible drools examples
Hi, I used Eclipse Indigo and m2eclipse to import. The package I used was 5.3.0.CR1 Best regards, Martin 2011/10/13 Geoffrey De Smet ge0ffrey.s...@gmail.com ** Martin, Another big question: Did you try 5.2.0.Final (the first download on the page) or 5.3.0.CR1? I did several fixes for the runExamples.bat script for 5.3.0.CR1. Op 13-10-11 09:46, Geoffrey De Smet schreef: Hi Martin, Thanks for the info, I 'll take a look at it. Which IDE did you use? to import the existing maven project? Op 12-10-11 16:22, Martin A schreef: What I did was to extract the folder examples/sources and import it as an existing maven project. When I did, the rules were full of messages, such as : cannot resolve type, mismatched token, etc. Besides of that, when tried to run any of the samples by running runExamples.bat and clicking on an example listitem I was getting this message: Exception in thread AWT-EventQueue-0 java.lang.NoClassDefFoundError: org/drool s/builder/ResourceConfiguration at org.drools.examples.DroolsExamplesApp$12.actionPerformed(DroolsExampl esApp.java:126) Thank you, Martin 2011/10/12 Geoffrey De Smet ge0ffrey.s...@gmail.com Hi Martin, full of improper project configuration Could you explain what you mean by this? What did you try and didn't work? We 'd like to improve it for the next release. Op 12-10-11 16:06, Martin A schreef: Hi Geoffrey, Yes, I think I experienced problems with these ones... @Mauricio: Thanks for the other link! Regards, Martin 2011/10/12 Geoffrey De Smet ge0ffrey.s...@gmail.com Martin, The several examples projects I found are full of improper project configuration. Which examples are you referring to in this statement? Are you referring to the examples directory found in the download zip? http://download.jboss.org/drools/release/5.3.0.CR1/drools-distribution-5.3.0.CR1.zip Op 12-10-11 15:07, Mauricio Salatino schreef: The examples that I've provided are very basic.. if you want to see more advanced stuff you can go to github and get the official set of examples from there: https://github.com/droolsjbpm/drools/tree/master/drools-examples 2011/10/12 Martin A wml...@gmail.com Hi Mauricio, These examples look good enough for this kind of framework introduction I need! Thanks for the prompt response and for the good reference! However, if you know other examples that may help me get into Drools quicker, I'd be glad if you give me some links :) Best regards, Martin 2011/10/12 Mauricio Salatino sala...@gmail.com Hi Martin, what kind of examples are you looking for? Here I'm writing with a couple of friends a set of examples that will be improved over the time. All the examples are using maven, that really helps in the configuration side and most of them are very introductory, but as I mention we are hoping to get feedback so we can improve them. https://github.com/Salaboy/Drools_jBPM5-Training-Examples Cheers 2011/10/12 Martin A wml...@gmail.com Hello, guys, I've been looking for nice and clear drools examples for the whole day so far, but can't find any. The several examples projects I found are full of improper project configuration. Would you please refer me to a reliable drools examples source projects? Thanks in advance! ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - CTO @ http://www.plugtree.com - MyJourney @ http://salaboy.wordpress.com - Co-Founder @ http://www.jugargentina.org - Co-Founder @ http://www.jbug.com.ar - Salatino Salaboy Mauricio - ___ 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 -- - CTO @ http://www.plugtree.com - MyJourney @ http://salaboy.wordpress.com - Co-Founder @ http://www.jugargentina.org - Co-Founder @ http://www.jbug.com.ar - Salatino Salaboy Mauricio - ___ rules-users mailing listrules-users@lists.jboss.orghttps://lists.jboss.org/mailman/listinfo/rules-users -- With kind regards, Geoffrey De Smet ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing listrules-users@lists.jboss.orghttps://lists.jboss.org/mailman/listinfo/rules-users -- With kind regards, Geoffrey De Smet ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] 7x slower .DRL compilation after switching 5.1.1 to 5.2.0
This thread has been covered in previous user mailing list postings. The issue is fixed in 5.3.CR1, we are trying to release .final this week. Mark On 13/10/2011 08:20, Victor Cv wrote: Hi, while we used on Drools 5.1.1 our rules compiled in approx 1 min, after switching to 5.2.0 the compilation time increased to approx 7 mins. Our compilation is performed programmatically via KnowledgeBuilder by the user application itself. What we are possibly doing wrong? Just to mention that after the switch our .DRL code that compiled successfully under 5.1.1 needed much fixing, because it completely broke under the 5.2.0 (more strict type casting, || became or, access to static Java methods and fields requires now explicit class imports instead of the package imports as before, etc.). I searched but didn't find any migration guide. Is something like that available? Regards, Victor -- View this message in context: http://drools.46999.n3.nabble.com/7x-slower-DRL-compilation-after-switching-5-1-1-to-5-2-0-tp3417952p3417952.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] [planner] Problem setting configuration file
Geoffrey,
Thank you, that worked!
I was wondering now if I can achieve the same with the drools rule file. The
method below wouldn't work because it's not me who load the file (I think
it's at AbstractSolverConfig.buildRuleBase, which seems to use
getResourceAsStream too).
2011/10/11 Geoffrey De Smet ge0ffrey.s...@gmail.com
**
Hi Guilharme,
There's an overloaded method called configure(InputStream in) and
configure(Reader reader) too, use either of those instead:
try {
InputStream in = new FileInputStream(
/path/to/xml/file/SolverConf.xml);
configurer.configure(in);
} finally {
IOUtils.closeSilently(in);
}
Op 11-10-11 15:01, Guilherme Kunigami schreef:
Hi,
I'm trying to load a configuration file (namely SolverConf.xml) into
XmlSolver with the code below:
XmlSolverConfigurer configurer = new XmlSolverConfigurer();
configurer.configure(SOLVER_CONFIG);
Solver solver = configurer.buildSolver();
If I bundle SolverConf.xml file with the application .jar file, then
using SOLVER_CONFIG as /path/to/xml/file/SolverConf.xml works fine.
But I want to use SolverConf.xml outside the .jar, so I can easiliy edit
it, but I don't know what path should I pass to it.
I know it's a Java related question, but I was wondering if anyone had a
similar problem when configuring drools planner. (I've asked on
stackoverflow, but none of the answers worked for me:
http://stackoverflow.com/questions/7718807/can-getresourceasstream-find-files-outside-the-jar-file
)
(Supposing my .jar is in /some/path and the SolverConf.xml will be on
/some/path/conf for example)
Thanks,
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[rules-users] [planner] The presumed score is corrupted
Hi,
I've implemented a very simple application using drools planner consisting
of a bunch of activities. My rule file is very simple too and just counts
the number of activities not assigned. When I run Solver.solve(), I get the
following error message:
Exception in thread AWT-EventQueue-0 java.lang.IllegalStateException: The
presumedScore (-10hard/0soft) is corrupted because it is not the realScore
(0hard/0soft).
Presumed workingMemory:
Score rule (remainingActivitiesCount) has count (1) and weight total (11).
Real workingMemory:
Score rule (remainingActivitiesCount) has count (1) and weight total (0).
I've tracked down this message and found this piece of code
@DefaultLocalSearchSolver.solveImplementation():
// there is no need to recalculate the score, but we still need to set it
localSearchSolverScope.getWorkingSolution().setScore(localSearchStepScope.getScore());
if (assertStepScoreIsUncorrupted) {
localSearchSolverScope.assertWorkingScore(localSearchStepScope.getScore());
}
It seems that the working score is never updated along the algorithm, but
the score in the working memory changes. Thus, when we use the DEBUG
environment, assertStepScoreIsUncorrupted is turned on and the assertion
fails.
Should the score be updated or am I using the library incorrectly?
Thanks,
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Re: [rules-users] Guvnor5.1.1 resource local cache
set the system property along with other system properties... drools.resource.urlcache= /location/to/the/local/cache - with kind regards, -- View this message in context: http://drools.46999.n3.nabble.com/Guvnor5-1-1-resource-local-cache-tp3241162p3419773.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] StatefulKnowledgeSession construction executes sequentially (no multithread)
I solved the problem. I experienced some memory leak using StatefulKnowledgeSession and immediately I discovered this http://drools.46999.n3.nabble.com/rules-users-Memory-leak-in-5-2-5-3-td3280351.html post . It's a bug in JBPM 5.1.0 in conjunction with drools 5.2. JBPM leaks some memory when creating new StatefulKnowledgeSessions. When memory reaches certain memory threshold, GC seems to execute trying to free some memory and all we know part of GC is single-threaded. Using Drools 5.2 you can avoid this problem if you do not use JBPM integration (BPMN2 resources). In order to test it in a proper scenario I put some code (cpu consuming) between creation and dispose ( double a = Math.sqrt(2828282)*Math.sqrt(2828282) with several bucles) Thank you very much for your help, -- View this message in context: http://drools.46999.n3.nabble.com/StatefulKnowledgeSession-construction-executes-sequentially-no-multithread-tp3412107p3418933.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] Fusion appears to be working properly, but...
It seems like I have fusion working correctly, yet the rules are not firing.
I have a quote object
class Quote {
private String symbol;
private double bid;
private double ask;
//eclipse generated getters and setter
}
in my drl I have the following:
import path.to.quote;
declare entry-point Incoming Quotes
@doc (incoming quotes)
end
declare Quote
@role (event)
//@expires(2s)
end
rule show something
when
FXQuote(symbol == EUR/USD, s:symbol) from entry-point
Incoming Quotes
then
System.out.println(euro quote);
end
in my code I am inserting manually:
quoteStream = ksession.getWorkingMemoryEntryPoint(Incoming Quotes);
...
quoteStream.insert(quote);
I have verified I am getting quote objects with symbol == EUR/USD yet the
rule is not firing
I only say that it *appears* that I have the stream set up properly because
everything compiles and runs and in my log file I see the incoming quotes:
org.drools.audit.event.ObjectLogEvent
type1/type
factId6/factId
objectToStringcom.trendfx.fxlib.FXQuote@103ec0d/objectToString
/org.drools.audit.event.ObjectLogEvent
org.drools.audit.event.ObjectLogEvent
type3/type
factId2/factId
objectToStringcom.trendfx.fxlib.FXQuote@145f918/objectToString
/org.drools.audit.event.ObjectLogEvent
org.drools.audit.event.ObjectLogEvent
type3/type
factId3/factId
objectToStringcom.trendfx.fxlib.FXQuote@184843c/objectToString
/org.drools.audit.event.ObjectLogEvent
org.drools.audit.event.ObjectLogEvent
type3/type
factId5/factId
objectToStringcom.trendfx.fxlib.FXQuote@1912b66/objectToString
/org.drools.audit.event.ObjectLogEvent
etc..
simple rule but no output, tried debugging but since I can only add
breakpoints to RHS this doesnt really help me
Thanks,
Bobby
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Re: [rules-users] Fusion appears to be working properly, but...
did you call the fire all rules method?
On Thu, Oct 13, 2011 at 7:23 PM, slyfox bobby.richa...@gmail.com wrote:
It seems like I have fusion working correctly, yet the rules are not
firing.
I have a quote object
class Quote {
private String symbol;
private double bid;
private double ask;
//eclipse generated getters and setter
}
in my drl I have the following:
import path.to.quote;
declare entry-point Incoming Quotes
@doc (incoming quotes)
end
declare Quote
@role (event)
//@expires(2s)
end
rule show something
when
FXQuote(symbol == EUR/USD, s:symbol) from entry-point
Incoming Quotes
then
System.out.println(euro quote);
end
in my code I am inserting manually:
quoteStream = ksession.getWorkingMemoryEntryPoint(Incoming Quotes);
...
quoteStream.insert(quote);
I have verified I am getting quote objects with symbol == EUR/USD yet the
rule is not firing
I only say that it *appears* that I have the stream set up properly because
everything compiles and runs and in my log file I see the incoming quotes:
org.drools.audit.event.ObjectLogEvent
type1/type
factId6/factId
objectToStringcom.trendfx.fxlib.FXQuote@103ec0d/objectToString
/org.drools.audit.event.ObjectLogEvent
org.drools.audit.event.ObjectLogEvent
type3/type
factId2/factId
objectToStringcom.trendfx.fxlib.FXQuote@145f918/objectToString
/org.drools.audit.event.ObjectLogEvent
org.drools.audit.event.ObjectLogEvent
type3/type
factId3/factId
objectToStringcom.trendfx.fxlib.FXQuote@184843c/objectToString
/org.drools.audit.event.ObjectLogEvent
org.drools.audit.event.ObjectLogEvent
type3/type
factId5/factId
objectToStringcom.trendfx.fxlib.FXQuote@1912b66/objectToString
/org.drools.audit.event.ObjectLogEvent
etc..
simple rule but no output, tried debugging but since I can only add
breakpoints to RHS this doesnt really help me
Thanks,
Bobby
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- Co-Founder @ http://www.jbug.com.ar
- Salatino Salaboy Mauricio -
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Re: [rules-users] Fusion appears to be working properly, but...
i did not but I was under the impression that the fireallrules method was for expert an not fusion. So anytime I have an 'event' come in I must call this method? I see that it works now, but this seems inefficient to me, how does this differentiate fusion, if its just like expert in a loop? Thanks for the response, Bobby -- View this message in context: http://drools.46999.n3.nabble.com/Fusion-appears-to-be-working-properly-but-tp3420043p3420143.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] Fusion appears to be working properly, but...
Fusion is a set of features added to all the Expert features, so in the end, they just leverage each other... it is not like Fusion only uses events, and Expert only uses facts... the goal of the Drools platform is to make it completely transparent for the user to write their rules/queries/processes using all the features together... Having said that, yes, you must either call fireAllRules() from time to time (for instance, after each insert, or every 20 seconds, or whatever), or you can start a thread and call fireUntilHalt() to place the engine in reactive mode (probably what you were looking for). Edson 2011/10/13 slyfox bobby.richa...@gmail.com i did not but I was under the impression that the fireallrules method was for expert an not fusion. So anytime I have an 'event' come in I must call this method? I see that it works now, but this seems inefficient to me, how does this differentiate fusion, if its just like expert in a loop? Thanks for the response, Bobby -- View this message in context: http://drools.46999.n3.nabble.com/Fusion-appears-to-be-working-properly-but-tp3420043p3420143.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 -- Edson Tirelli JBoss Drools Core Development JBoss by Red Hat @ www.jboss.com ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Fusion appears to be working properly, but...
thanks for the response, that makes a little more sense. That is an issue because the whole idea of CEP is to process events as they happen. My next step is adding camel support so that I can consume the amqp feed without manually inserting into the session. I guess fireuntilhalt is my only option. But what does fire until halt do, is it just a continuous loop or is is smart enough to only process events when they come in? so what would happen if the event is given an expiration of say 2 seconds? if you were calling fireallrules in anything over a 2 second interval you would miss a lot. I do not really see the benefit of fusion then, seems like its redundant? I hope that I am missing something. -- View this message in context: http://drools.46999.n3.nabble.com/Fusion-appears-to-be-working-properly-but-tp3420043p3420701.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] Fusion appears to be working properly, but...
On 14 October 2011 06:31, slyfox bobby.richa...@gmail.com wrote: thanks for the response, that makes a little more sense. That is an issue because the whole idea of CEP is to process events as they happen. My next step is adding camel support so that I can consume the amqp feed without manually inserting into the session. I guess fireuntilhalt is my only option. But what does fire until halt do, is it just a continuous loop or is is smart enough to only process events when they come in? There is one reasons for the thread running a Drools engine until halt to become active: when a fact is inserted. After doing the work resulting from this, the thread falls back into suspension. so what would happen if the event is given an expiration of say 2 seconds? if you were calling fireallrules in anything over a 2 second interval you would miss a lot. An event that has expired any time before you fireAllRules is discarded soon after this call is entered. What could you miss in the time between the scheduled expiry and the actual removal? Note that any application that expects to produce real-time reactions is bound to fireUntilHalt. I do not really see the benefit of fusion then, seems like its redundant? I hope that I am missing something. There isn't really a Fusion thing. (Think of it as a marketing gag.) The Drools Rule Engine is capable of dealing with facts that have the distinct traits of what is called event: timestamp, duration and expiry; the Engine is clever enough to retract stale events automatically, and there's a set of operators for comparing numbers that may represent points in time with some fancy overlap options. If you don't need anything of this, don't use it; OTOH, if you compare dates, just using the temporal operators may help. -W -- View this message in context: http://drools.46999.n3.nabble.com/Fusion-appears-to-be-working-properly-but-tp3420043p3420701.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
