Re: [rules-users] Could anyone suggest alternate approach
OK, thanks for checking! -W ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Rule Templates - Docs Examples?
An extensive rewrite of the section dealing with Templates was done in the early stages of 5.0, and it ought to be available with current snapshot releases. The relevant section is 5.2, Templates. -W On 11/24/09, Adam Rinehart adam.rineh...@gmail.com wrote: I am trying to research using a rule template driven by data from a spreadsheet, rather than using a straight decision table. I understand I need to use the ExternalSpreadsheetCompiler but am finding a distressing lack of information about the template format. The 5.0 docs seem to have mistakes; the code example for that section looks to have been cut pasted from another section and does not match the text description of what is going on. Using google, the best I could find was a blog posting from Steven Williams on Aug 26, 2008: http://blog.athico.com/2008/08/drools-rule-templates.html In this blog posting, he said it was the first of 3 examples from the drools-examples project. But I could not find any additional blog postings by him on this subject. Does anyone know of additional documentation or examples on how rule templates work? Specifically, how to do optional columns, and array columns, similar to how the built in decision tables feature works? Adam ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Query on performance when adding/removing rules
any suggestions regarding the impact on performance??? DeepakA wrote: We have a set of rules (lets call them old rules) running in our strategy server. A new requirement is that - the client can make calls to the server, at that point new rules need to be loaded in the workin memory (at run time), if the rules get executed then the rules need to be removed from the WorkinMemory (after the consequence section is executed) I would like to know if repeated adding and removing of rules in the working memory will lead to performance issues? i.e. when the new rules are added/removed the old-set-of rules will still be evaluated in the background, will this hamper performance? -- View this message in context: http://old.nabble.com/Query-on-performance-when-adding-removing-rules-tp26475542p26493210.html Sent from the drools - user 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] Problems debugging on Eclipse 3.5
Hi Guys, I'm having the following exception while trying to lauch Debug as Drools JUnit Test: FATAL ERROR in native method: JDWP No transports initialized, jvmtiError=JVMTI_ERROR_INTERNAL(113) ERROR: transport error 202: connect failed: Connection refused [transport.c,L41] ERROR: JDWP Transport dt_socket failed to initialize, TRANSPORT_INIT(510) [debugInit.c,L500] JDWP exit error JVMTI_ERROR_INTERNAL(113): No transports initialized I'm using: * Eclipse 3.5.0 * Drools Eclipse Plugin 5.0.1 * jdk1.5.0_18 Any ideas? Thank you, Leo. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Deploy Guvnor on websphere
Hi All, I am trying to deploy Guvnor on Websphere v6.1. But I am getting the following error: WebApp E Exception caught while initializing context java.lang.RuntimeException: Could not create Component: assetLockManager at org.jboss.seam.init.Initialization.addComponent(Initialization.java:1155) at org.jboss.seam.init.Initialization.installComponents(Initialization.java:1071) at org.jboss.seam.init.Initialization.init(Initialization.java:720) at org.jboss.seam.servlet.SeamListener.contextInitialized(SeamListener.java:34) at com.ibm.ws.wswebcontainer.webapp.WebApp.notifyServletContextCreated(WebApp.java:652) at com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFinish(WebApp.java:354) at com.ibm.ws.wswebcontainer.webapp.WebApp.initialize(WebApp.java:292) at com.ibm.ws.wswebcontainer.webapp.WebGroup.addWebApplication(WebGroup.java:92) at com.ibm.ws.wswebcontainer.VirtualHost.addWebApplication(VirtualHost.java:157) Can anyone help me on this? Thanks, Ambika ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] DrlParser not supporting temporal operators
Hi, XML rule format wasn't updated to drools 5 new operators, because the lack of interest of the users Sent from my phone El 24/11/2009, a las 05:21, Swapnil Raverkar swapnil.raver...@gmail.com escribió: Can anyone help me with this? Cheers, Swapnil 2009/11/21 Swapnil Raverkar swapnil.raver...@gmail.com Thanks Edson. That worked. But the problem is that if i am using a temporal operator condition as: this before[5s, 0s] $res the equivalent XML generated is as follows: field-constraint field-name=this variable-restriction evaluator=before identifier=$res / /field-constraint over here [5s,0s] information is getting lost in the transformation. Is there any fix for this? Cheers, Swapnil 2009/11/21 Edson Tirelli ed.tire...@gmail.com All operators in drools are pluggable. Whenever you use the KnowledgeBuilder to parse/compile rules, it will automatically build a static registry of available operators for the parser, but if you use the lower level parser API, you need to register the operators by yourself. Just write the following line of code, before parsing anything: new EvaluatorRegistry(); This will statically initialize the registry with the operators shipped with Drools. If you create your own operators, you can add them to the cache by doing: EvaluatorRegistry registry = new EvaluatorRegistry(); registry.addEvaluatorDefinition( new MyEvaluatorDefinition() ); []s Edson 2009/11/20 Swapnil Raverkar swapnil.raver...@gmail.com I am trying to dump an XML equivalent of a DRL file using DrlParser XMLOutputter. But when my rules file has rules with temporal operators DrlParser.parser(inputStream) throws a NullPointerException. Why DrlParser is not supporing temporal operators yet? Cheers, Swapnil ___ 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 ___ 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 5.0 Guvnor install
Hi! I have a problem. I installed the Drools 5.0 Guvnor Standalone with with JBoss AS from http://www.jboss.org/drools/downloads.html I read this tutorial: http://downloads.jboss.com/drools/docs/5.0.1.26597.FINAL/drools-guvnor/html_single/index.html#d0e85 And it says you should navigate to http://localhost/drools-jbrms and check that Guvnor appears, but it doesn't work, although the server is running. Can anyone help me on this? Thanks! -- View this message in context: http://old.nabble.com/Drools-5.0-Guvnor-install-tp26494839p26494839.html Sent from the drools - user 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 5.0 Guvnor install
On Tue, Nov 24, 2009 at 5:40 PM, SzA84 szepesiand...@citromail.hu wrote: And it says you should navigate to http://localhost/drools-jbrms and check that Guvnor appears, but it doesn't work, although the server is running. I think request url should be http://localhost/drools-guvnor -- S. Argue with idiots, and you become an idiot. - PG ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Drools 5.0 Guvnor install
I had some issue. The instruction says you need to replace a few jars files (you can download it from Drools web site). But I still cannot make it work (GlassFish). I used standalone right now. There are two books out there. Can anyone tell us which one is better or covers most recent features in 5.0? Also, I'm looking for examples of using RestFul Web Service (both Java and Perl). Any help is really appreciated. Thanks, Tony -Original Message- From: rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org] On Behalf Of Sahid Khan (?) Sent: Tuesday, November 24, 2009 7:21 AM To: Rules Users List Subject: Re: [rules-users] Drools 5.0 Guvnor install On Tue, Nov 24, 2009 at 5:40 PM, SzA84 szepesiand...@citromail.hu wrote: And it says you should navigate to http://localhost/drools-jbrms and check that Guvnor appears, but it doesn't work, although the server is running. I think request url should be http://localhost/drools-guvnor -- S. Argue with idiots, and you become an idiot. - PG ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users HR font size=1 face=ArialBCONFIDENTIALITY NOTICE: /BThe information in this electronic transmission and any documents accompanying it may contain confidential and privileged information intended for use by the individual or entity that is the intended recipient. If you have received this message in error or due to an unauthorized transmission or interception, please delete all copies from your system without disclosing, copying, or transmitting this message and notify us by telephone 877TELLUS9 or by electronic mail a href = servicecomme...@progressive-medical.comservicecomme...@progressive-medical.com/a./font ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Rule Templates - Docs Examples?
Looking at the 5.1 snapshots, these sections have not been updated since the 5.0 release. I'm looking at a 5.1 snapshot I downloaded on 11/2/09. The relevent sections, specifically 5.1.7 and 5.2, seem to have errors and/or omissions and those sections should have the information I'm looking for. Unfortunately I don't know what the correct info should be, so I can't submit an edit myself. As an example, from the last part of 5.1.7: snip The code to run this is simple: KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); DecisionTableConfiguration dtconf = KnowledgeBuilderFactory.newDecisionTableConfiguration(); dtconf.setInputType( DecisionTableInputType.XLS ); dtconf.setWorksheetName( Tables_2 ); kbuilder.add( ResourceFactory.newInputStreamResource( getSpreadsheetStream() ), ResourceType.DTABLE, dtconf ); CollectionKnowlegePackage kpkg = kbuilder.getKnowlegePackages(); We create an ExternalSpreadsheetCompiler object and use it to merge the spreadsheet with the rules. The two integer parameters indicate the column and row where the data actually starts - in our case column 2, row 2 (i.e. B2) /snip The docs discuss creating an ExternalSpreadsheetCompiler in the example to merge the spreadsheet with the rules template, but the example is for a standard DecisionTable, without a custom template. In section 5.2, it goes over templates, but does not discussion optional values or array values. I have reviewed the Drools-Example files. There is an example in there of using array values, but not an example using optional values, which is what I particularly need. On Tue, Nov 24, 2009 at 1:17 AM, Wolfgang Laun wolfgang.l...@gmail.comwrote: An extensive rewrite of the section dealing with Templates was done in the early stages of 5.0, and it ought to be available with current snapshot releases. The relevant section is 5.2, Templates. -W On 11/24/09, Adam Rinehart adam.rineh...@gmail.com wrote: I am trying to research using a rule template driven by data from a spreadsheet, rather than using a straight decision table. I understand I need to use the ExternalSpreadsheetCompiler but am finding a distressing lack of information about the template format. The 5.0 docs seem to have mistakes; the code example for that section looks to have been cut pasted from another section and does not match the text description of what is going on. Using google, the best I could find was a blog posting from Steven Williams on Aug 26, 2008: http://blog.athico.com/2008/08/drools-rule-templates.html In this blog posting, he said it was the first of 3 examples from the drools-examples project. But I could not find any additional blog postings by him on this subject. Does anyone know of additional documentation or examples on how rule templates work? Specifically, how to do optional columns, and array columns, similar to how the built in decision tables feature works? Adam ___ 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] unable to resolve Type Declaration class
So, my code is doing this:
KnowledgeBaseConfiguration conf =
KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
conf.setOption(EventProcessingOption.STREAM);
KnowledgeBuilder builder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
try {
File f = new File(/tmp/my.pkg);
InputStream stream = new FileInputStream(f);
if (stream == null) {
jlog.fatal(Unable to find rule pkg);
} else {
jlog.info(adding pkg);
builder.add(ResourceFactory.newInputStreamResource(stream),
ResourceType.PKG);
}
} catch (Exception e) {
e.printStackTrace();
}
KnowledgeBase kbase =
KnowledgeBaseFactory.newKnowledgeBase(conf);
kbase.addKnowledgePackages(builder.getKnowledgePackages());
jlog.info(setup creating knowledge session);
ksession = kbase.newStatefulKnowledgeSession();
jlog.info( setup ksession created);
The pkg was created from Guvnor.
If in the package declaration area in Guvnor, (where you put the import
statements)
If I put
declare Signature
@role ( event )
end
then build the package, save it to disk /tmp/my.pkg
on startup I get:
[#|2009-11-24T14:50:38.944+|WARNING|sun-appserver2.1|javax.enterprise.system.stream.err|_ThreadID=12;_ThreadName=pool-1-thread-3;_RequestID=7c35064d-757e-4519-b5eb-433db89e168d;|org.drools.RuntimeDroolsException:
unable to resolve Type Declaration class 'Signature'
at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:754)
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:515)
at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:25)
I need to declare 'Signature' as an 'event'
Am I doing this wrong?
If I do this all in Eclipse and load the DRL files manually it all works.
--
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Re: [rules-users] unable to resolve Type Declaration class
Do you have the import for your signature class?
import my.package.Signature
Edson
2009/11/24 richarda richard.ambri...@gmail.com
So, my code is doing this:
KnowledgeBaseConfiguration conf =
KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
conf.setOption(EventProcessingOption.STREAM);
KnowledgeBuilder builder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
try {
File f = new File(/tmp/my.pkg);
InputStream stream = new FileInputStream(f);
if (stream == null) {
jlog.fatal(Unable to find rule pkg);
} else {
jlog.info(adding pkg);
builder.add(ResourceFactory.newInputStreamResource(stream),
ResourceType.PKG);
}
} catch (Exception e) {
e.printStackTrace();
}
KnowledgeBase kbase =
KnowledgeBaseFactory.newKnowledgeBase(conf);
kbase.addKnowledgePackages(builder.getKnowledgePackages());
jlog.info(setup creating knowledge session);
ksession = kbase.newStatefulKnowledgeSession();
jlog.info( setup ksession created);
The pkg was created from Guvnor.
If in the package declaration area in Guvnor, (where you put the import
statements)
If I put
declare Signature
@role ( event )
end
then build the package, save it to disk /tmp/my.pkg
on startup I get:
[#|2009-11-24T14:50:38.944+|WARNING|sun-appserver2.1|javax.enterprise.system.stream.err|_ThreadID=12;_ThreadName=pool-1-thread-3;_RequestID=7c35064d-757e-4519-b5eb-433db89e168d;|org.drools.RuntimeDroolsException:
unable to resolve Type Declaration class 'Signature'
at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:754)
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:515)
at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:25)
I need to declare 'Signature' as an 'event'
Am I doing this wrong?
If I do this all in Eclipse and load the DRL files manually it all works.
--
View this message in context:
http://old.nabble.com/unable-to-resolve-Type-Declaration-class-tp26497326p26497326.html
Sent from the drools - user mailing list archive at Nabble.com.
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--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
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Re: [rules-users] unable to resolve Type Declaration class
Yes
Edson Tirelli-4 wrote:
Do you have the import for your signature class?
import my.package.Signature
Edson
2009/11/24 richarda richard.ambri...@gmail.com
So, my code is doing this:
KnowledgeBaseConfiguration conf =
KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
conf.setOption(EventProcessingOption.STREAM);
KnowledgeBuilder builder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
try {
File f = new File(/tmp/my.pkg);
InputStream stream = new FileInputStream(f);
if (stream == null) {
jlog.fatal(Unable to find rule pkg);
} else {
jlog.info(adding pkg);
builder.add(ResourceFactory.newInputStreamResource(stream),
ResourceType.PKG);
}
} catch (Exception e) {
e.printStackTrace();
}
KnowledgeBase kbase =
KnowledgeBaseFactory.newKnowledgeBase(conf);
kbase.addKnowledgePackages(builder.getKnowledgePackages());
jlog.info(setup creating knowledge session);
ksession = kbase.newStatefulKnowledgeSession();
jlog.info( setup ksession created);
The pkg was created from Guvnor.
If in the package declaration area in Guvnor, (where you put the import
statements)
If I put
declare Signature
@role ( event )
end
then build the package, save it to disk /tmp/my.pkg
on startup I get:
[#|2009-11-24T14:50:38.944+|WARNING|sun-appserver2.1|javax.enterprise.system.stream.err|_ThreadID=12;_ThreadName=pool-1-thread-3;_RequestID=7c35064d-757e-4519-b5eb-433db89e168d;|org.drools.RuntimeDroolsException:
unable to resolve Type Declaration class 'Signature'
at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:754)
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:515)
at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:25)
I need to declare 'Signature' as an 'event'
Am I doing this wrong?
If I do this all in Eclipse and load the DRL files manually it all works.
--
View this message in context:
http://old.nabble.com/unable-to-resolve-Type-Declaration-class-tp26497326p26497326.html
Sent from the drools - user mailing list archive at Nabble.com.
___
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--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
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Re: [rules-users] Does Session effeciently filter unused facts, or...
Well, I was about to say you could do this using rule inheritance but there is a caveat, and possibly a bug. It almost works. :) Try this: rule BaseStream1Criteria enabled false when m : Message( foo == BAR ) from entry-point Stream1 then System.out.println( BaseStream1Criteria ); end rule SubRule1 extends BaseStream1Criteria when Message( status == Message.HELLO ) from m; then System.out.println( SubRule1 ); end rule BaseStream2Criteria enabled false when m : Message( foo == BAS ) from entry-point Stream2 then System.out.println( BaseStream2Criteria ); end rule SubRule2 extends BaseStream2Criteria when Message( status == Message.HELLO ) from m; then System.out.println( SubRule2 ); end Basically, define one rule for each entry point that has the global criteria for that entry point. Then extend that rule. The caveat is that it seems you can't use the events matched in the super-rule in the RHS of the subrule. (Try putting the object m matched into the action of either of the subrules. It neither validates in eclipse nor compiles at runtime, drools 5.0.1.) If this isn't fixed in trunk (I can't check at the moment) I'll open a jira. Code attached. When you run it, this should be the output: SubRule2 SubRule1 --- On Mon, 11/23/09, Barry Kaplan grou...@memelet.com wrote: From: Barry Kaplan grou...@memelet.com Subject: [rules-users] Does Session effeciently filter unused facts, or... To: rules-users@lists.jboss.org Date: Monday, November 23, 2009, 9:12 PM ... should I put a filter before insert(). I will have lots of events coming from hardware devices, only some of which be applicable to a given session instance. I've tried extracting the declared types from the packages, but that doesn't include classes used in patterns which where only imported. So determine the actual set of event classes used by a given set of packages seems not to be so easy. I've drilled down to EntryPointNode.assertObject.. -- View this message in context: http://old.nabble.com/Does-Session-effeciently-filter-unused-facts%2C-or...-tp26489782p26489782.html Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users DroolsTest.java Description: Binary data Sample.drl Description: Binary data ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Drools 5.0 Guvnor install
Unfortunately that isn't good too. But I see this message: 19:27:20,921 INFO [AprLifecycleListener] The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path I don't know what is it exactly, but may be this is the problem? Sahid Khan (সাহিদ) wrote: On Tue, Nov 24, 2009 at 5:40 PM, SzA84 szepesiand...@citromail.hu wrote: And it says you should navigate to http://localhost/drools-jbrms and check that Guvnor appears, but it doesn't work, although the server is running. I think request url should be http://localhost/drools-guvnor -- S. Argue with idiots, and you become an idiot. - PG ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- View this message in context: http://old.nabble.com/Drools-5.0-Guvnor-install-tp26494839p26499921.html Sent from the drools - user 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] Guvnor 5.1 fix questions
Any idea if the patch to handle agenda-groups within decision tables will be applied to 5.1, and if it will deploy cleanly (without ACL errors) to JBoss 5.x? The human mind is an iterative processor, it never does anything right the first time. What it does well is to make improvements on every iteration (deMarco) ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Refreshing rules
I am loading rules from database and it can be updated using GUI. Can KnowledgeAgent be used to refresh rules? KnowledgeAgent kagent = KnowledgeAgentFactory.newKnowledgeAgent( MyAgent ); kagent.applyChangeSet( ResourceFactory.newInputStreamResource(stream)); KnowledgeBase kbase = kagent.getKnowledgeBase(); ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Stateful session and non-existence of Facts
Hello, Regarding the session recreation, you're absolutely right, thanks! Anyway, I still have a problem and I believe it's more a design thing. Let me try to clarify it. I have different types of facts, let's say: * Types: FactA, FactB, FactC; * A stateful session with rules operating on them; * And a global variable, called output, which is a list of messages generated as consequences of those rules; * From time to time, I get notified that a fact of type FactA changed, then I have to: - retract all facts of type FactA from my working memory - reload them from the database (with java beans being created) - reinsert them in that stateful session Now, let's say FactA(1) indicates a fact of type FactA and id = 1. - Then, in the beginning, I insert FactA(1) and FactA(2) in my working memory and fire the rules. - I have several rules operating on different types of facts, but I'm interested in one rule in particular which operates against FactA and reads something like: rule test non existence when not FactA( id == 4 ) then output.add(there's no FactA id 4); - This rule is fired and the message is added to my output object. Later on, I have a notification that a FactA has changed, then I: - retract all FactAs from my working memory - clear all FactA-related messages from my output object - reload FactAs (let's say now I have FactA(1), FactA(3), but NOT FactA(4)) - reinsert them in the WM - fire the rules The rule that checks that there's no FactA(4) doesn't refire. All other rules operating against FactA do, and since I had removed all FactA-related messages from my output object, this time I don't get the there no FactA id 4 message in my output. It sounds like a situation for a stateless session, but I actually have several different rules, operating on different types of facts and don't want to refire all rules, just because a fact of type A changed. Maybe I should have an strategy of creating different sets of stateless sessions. I'm not sure. Advice is really welcome! Thanks again. Leo. 2009/11/17 Edson Tirelli ed.tire...@gmail.com Leonardo, First, I believer there is a misconception in your reasoning: creating sessions is supposed to be much much cheaper than retracting all facts. Creating a rulebase is heavier, because it requires compilation, but creating a session is supposed to be very light by design. So, first thing you should do is change that. Regarding your question, if you insert: SiteLanguage(language : languageCode) t : SiteSpecialServiceType(type : specialServiceType) The rule will activate and fire. If you don't, then the rule will not match. That is how it is supposed to work. Edson 2009/11/17 Leonardo Gomes leonardo.f.go...@gmail.com Hi Guys, I have the following situation while running a stateful session with Drools 4.0.7: - I want to test that a fact with a given state doesn't exist; - It works fine - At a certain point I have to retract all facts and reinsert them at the stateful session - some of them actually changed and I don't want to recreate the session b/c it's expensive - Again the fact that didn't exist when I first created the session still doesn't exist ** Problem: This time the rule that verified the non-existence is not fired because I didn't insert any fact that would retrigger it. Rule example: rule 022 when SiteLanguage(language : languageCode) t : SiteSpecialServiceType(type : specialServiceType) not SiteLanguageSpecialServiceType(specialServiceType == type, languageCode == language) then consequence end How could I solve or workaround that? Thanks in advance, Leo. ___ 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 ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Does Session effeciently filter unused facts, or...
Greg, I'm not following how this is related to my question. Probably I was unclear. Suppose I have 1000 event types/classes, but rules that use only 50 types in LHS patterns. I will be receiving events of random types at say 100hz. The question is whether I should just insert the events regardless of whether any rule actually uses the instances' event type (because the rete-oo will filter out the unused types very quickly) or whether I should add a filter before sesssion.insert(..) to let only those types of events that are actually used by a rule. My second problem/question then becomes: How to determine which types/classes are actually used in LHS patterns for a given package? By this I mean, how can I write code to make this determination. -- View this message in context: http://old.nabble.com/Does-Session-effeciently-filter-unused-facts%2C-or...-tp26489782p26505340.html Sent from the drools - user 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] Does Session effeciently filter unused facts, or...
Greg, I believe I fixed this bug in trunk a few weeks ago. Although I confess I did not understood the intent of your rules... :) Barry, you can certainly go either way. Rete is very efficient on filtering fact types, but of course there is some overhead on fact handle creation. If performance is acceptable for you by just inserting events and letting the engine discard them automatically when not used, I would not worry about. If you are having performance problems due to the volumes of non-interesting events and you want to try pre-filtering, I can give you some pointers on how to find the fact types used by your rules/queries. In this case, we might even make a feature of that and have the pre-filter being executed by the engine... ;) Edson 2009/11/24 Greg Barton greg_bar...@yahoo.com Well, I was about to say you could do this using rule inheritance but there is a caveat, and possibly a bug. It almost works. :) Try this: rule BaseStream1Criteria enabled false when m : Message( foo == BAR ) from entry-point Stream1 then System.out.println( BaseStream1Criteria ); end rule SubRule1 extends BaseStream1Criteria when Message( status == Message.HELLO ) from m; then System.out.println( SubRule1 ); end rule BaseStream2Criteria enabled false when m : Message( foo == BAS ) from entry-point Stream2 then System.out.println( BaseStream2Criteria ); end rule SubRule2 extends BaseStream2Criteria when Message( status == Message.HELLO ) from m; then System.out.println( SubRule2 ); end Basically, define one rule for each entry point that has the global criteria for that entry point. Then extend that rule. The caveat is that it seems you can't use the events matched in the super-rule in the RHS of the subrule. (Try putting the object m matched into the action of either of the subrules. It neither validates in eclipse nor compiles at runtime, drools 5.0.1.) If this isn't fixed in trunk (I can't check at the moment) I'll open a jira. Code attached. When you run it, this should be the output: SubRule2 SubRule1 --- On Mon, 11/23/09, Barry Kaplan grou...@memelet.com wrote: From: Barry Kaplan grou...@memelet.com Subject: [rules-users] Does Session effeciently filter unused facts, or... To: rules-users@lists.jboss.org Date: Monday, November 23, 2009, 9:12 PM ... should I put a filter before insert(). I will have lots of events coming from hardware devices, only some of which be applicable to a given session instance. I've tried extracting the declared types from the packages, but that doesn't include classes used in patterns which where only imported. So determine the actual set of event classes used by a given set of packages seems not to be so easy. I've drilled down to EntryPointNode.assertObject.. -- View this message in context: http://old.nabble.com/Does-Session-effeciently-filter-unused-facts%2C-or...-tp26489782p26489782.html Sent from the drools - user 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 -- 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] Does Session effeciently filter unused facts, or...
Thinking a bit more about it, if the rules author does not care about a given event type, he will probably not even declare that event type with @role( event ), meaning the engine will not discard it automatically. By default the engine will keep this facts around until retracted because at some point in the future the user might dynamically add rules that match them, what is clearly not your case... So, for your problem, I believe pre-filtering is probably your best option with released versions of Drools. For future versions, I think we should add a kbase configuration option to tell the engine what to do in case of facts that don't match any rule: either keep them (as it does today) or discard them right away. What do you think? Edson 2009/11/24 Barry Kaplan grou...@memelet.com Greg, I'm not following how this is related to my question. Probably I was unclear. Suppose I have 1000 event types/classes, but rules that use only 50 types in LHS patterns. I will be receiving events of random types at say 100hz. The question is whether I should just insert the events regardless of whether any rule actually uses the instances' event type (because the rete-oo will filter out the unused types very quickly) or whether I should add a filter before sesssion.insert(..) to let only those types of events that are actually used by a rule. My second problem/question then becomes: How to determine which types/classes are actually used in LHS patterns for a given package? By this I mean, how can I write code to make this determination. -- View this message in context: http://old.nabble.com/Does-Session-effeciently-filter-unused-facts%2C-or...-tp26489782p26505340.html Sent from the drools - user 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] Does Session effeciently filter unused facts, or...
Ah, yes Edson. I didn't even think of that. That will probably force my hand to filter. But that then leaves me with how to determine the set of classes used in the rules. Doing it by textual inspection is not viable since rules can be added as part of the application (by users'). -- View this message in context: http://old.nabble.com/Does-Session-effeciently-filter-unused-facts%2C-or...-tp26489782p26507196.html Sent from the drools - user 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] Does Session effeciently filter unused facts, or...
An option like that would be ideal. However it would also be nice to have the ability to determine the fact types so filtering pre fact-handle-creation/insertion can be done as well. In the meantime, for our current design at least, it will almost always be the case that we can scale out if we overload drools. ie, Have a separate thread/process per device (or subset), as the rules/cep processing is hierarchical. Higher levels will be consuming events generated by lower levels, but the rate of creation will decrease up the hierarchy. Edson Tirelli-4 wrote: For future versions, I think we should add a kbase configuration option to tell the engine what to do in case of facts that don't match any rule: either keep them (as it does today) or discard them right away. What do you think? -- View this message in context: http://old.nabble.com/Does-Session-effeciently-filter-unused-facts%2C-or...-tp26489782p26507232.html Sent from the drools - user 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] Does Session effeciently filter unused facts, or...
In current Drools versions, you will need to use some internal APIs for
that, but we can probably add a higher level method call for the next
version.
The LHS of a rule is a tree of RuleConditionElements. What you need to do
is navigate the tree recursively using the getNestedElements() method and
looking for Patterns. In pseudo algorithm:
***
Package pkg = ...; // obtain a package from the package builder or from the
rulebase
SetClass? usedClasses = new HashSetClass?();
for( Rule rule : pkg.getRules() ) {
RuleConditionElement lhs = rule.getLhs();
collectUsedClasses( usedClasses, lhs );
}
**
public void collectUsedClasses( SetClass? usedClasses,
RuleConditionElement rce ) {
if( rce instanceof Pattern ) {
ObjectType ot = ((Pattern)rce).getObjectType();
if( ot instanceof ClassObjectType ) {
usedClasses.add( ((ClassObjectType)ot).getClassType() );
}
}
for( RuleConditionElement child : rce.getNestedElements() ) {
collectUsedClasses( usedClasses, child );
}
}
**
I wrote the above code directly into the e-mail, so there might be some
mistakes, but the idea is there... so you can probably figure out, based on
that.
Edson
2009/11/24 Barry Kaplan grou...@memelet.com
Ah, yes Edson. I didn't even think of that. That will probably force my
hand
to filter.
But that then leaves me with how to determine the set of classes used in
the
rules. Doing it by textual inspection is not viable since rules can be
added
as part of the application (by users'). So that pointer on how to
determine
used fact types would be much appreciated.
--
View this message in context:
http://old.nabble.com/Does-Session-effeciently-filter-unused-facts%2C-or...-tp26489782p26507196.html
Sent from the drools - user mailing list archive at Nabble.com.
___
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--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
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Re: [rules-users] Drools 5.0 Guvnor install
SzA84 wrote: Unfortunately that isn't good too. But I see this message: 19:27:20,921 INFO [AprLifecycleListener] The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path I don't know what is it exactly, but may be this is the problem? If you are using a snapshot version of Guvnor that was built from trunk (*after revision 30188)*, please follow this link [1] on how to install Guvnor in Tomcat 6. If you are using Guvnor 5.0, you also need to install jsf libs (see [2[) besides what you are instructed to do according to [1]. [1]. http://www.jboss.org/community/docs/DOC-14395?uniqueTitle=false [2]. http://www.jboss.org/community/wiki/JBRMSjsfdependencies Hope this helps, Jervis Sahid Khan (সাহিদ) wrote: On Tue, Nov 24, 2009 at 5:40 PM, SzA84 szepesiand...@citromail.hu wrote: And it says you should navigate to http://localhost/drools-jbrms and check that Guvnor appears, but it doesn't work, although the server is running. I think request url should be http://localhost/drools-guvnor -- S. Argue with idiots, and you become an idiot. - PG ___ 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] Deploy Guvnor on websphere
This might help: http://www.jboss.org/community/wiki/DeployingGuvnor5OnWebSphere Cheers, Jervis Ambika Goel wrote: Hi All, I am trying to deploy Guvnor on Websphere v6.1. But I am getting the following error: WebApp E Exception caught while initializing context java.lang.RuntimeException: Could not create Component: assetLockManager at org.jboss.seam.init.Initialization.addComponent(Initialization.java:1155) at org.jboss.seam.init.Initialization.installComponents(Initialization.java:1071) at org.jboss.seam.init.Initialization.init(Initialization.java:720) at org.jboss.seam.servlet.SeamListener.contextInitialized(SeamListener.java:34) at com.ibm.ws.wswebcontainer.webapp.WebApp.notifyServletContextCreated(WebApp.java:652) at com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFinish(WebApp.java:354) at com.ibm.ws.wswebcontainer.webapp.WebApp.initialize(WebApp.java:292) at com.ibm.ws.wswebcontainer.webapp.WebGroup.addWebApplication(WebGroup.java:92) at com.ibm.ws.wswebcontainer.VirtualHost.addWebApplication(VirtualHost.java:157) Can anyone help me on this? Thanks, Ambika ___ 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] Passing user id and password to guvnor and Reaching Guvnor portal directly from my web-page
Alok Patnaik wrote: Hi, I'm trying to reach guvnor portal from a link on my web-page. If I configure the guvnor to no authentication, then it works fine as a guest. Can someone please help, how to pass the user ID and password from my webpage to Guvnor 5.1. Or is there any other way through which I can reach? Guvnor is using Seam internally, you may want to do a bit research on how to do this in Seam. At the same time, please check the SAML integration with JBOSS AS [1]. [2], it might help. Sorry that this is all I can provide, not familiar with security stuff myself. [1]. http://www.jboss.org/community/wiki/SeamIntegrationWithJBossIdentity [2]. http://www.jboss.org/community/wiki/JBossSeamsupportforWebBrowserSSOProfile Cheers, Jervis ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
