[rules-users] Is it possible to retrieve the collection of Conditions from DecisionTable?
Hi All, for suppose I have a DecisionTable like below
CONDITION ACTION
-
COND1 ACTION1
COND2 ACTION2
COND3 ACTION3
-
This is just a representation of the DecisionTable. So I need to retrieve
all the conditions and store them into a Collection like Set. Does Drools
provide any such feature.
We load the drools as below
PackageBuilder builder = new PackageBuilder();
builder.addPackageFromDrl(new StringReader(drl)); //drl is the filepath of
decisiontable excel
// add the package to a rulebase (deploy the rule package).
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage(builder.getPackage());
I tried to look into api of RuleBase, tried to get the packages, Rules,
Consequence, etc etc, but could not find any method, that gets me the
condition name.
When I tried to do
Package[] packages = rulebase.getPackages();
for(Package pack : packages){
System.out.println(Package Name is : +pack.getName());
Rule[] rules = pack.getRules();
for(Rule rule : rules){
System.out.println(Rule name is : +rule.getName());
All I get is some representation of each row, but I'm specifically looking
for the value of the first column (CONDITION) for each rule.
Please offer some guidance here.
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Re: [rules-users] Is it possible to retrieve the collection of Conditions from DecisionTable?
A condition does not have a name, as you write; values of the cells
below a condition are (usually) literals.
There is no API for extracting parts of a spreadsheet. You can look at
the Drools source code (in the packages org.drools.decisiontable and
.../parser) and write whatever you need - it is not too difficult.
-W
On 3 October 2011 17:05, RaviCKota ravi.k...@wellsfargo.com wrote:
Hi All, for suppose I have a DecisionTable like below
CONDITION ACTION
-
COND1 ACTION1
COND2 ACTION2
COND3 ACTION3
-
This is just a representation of the DecisionTable. So I need to retrieve
all the conditions and store them into a Collection like Set. Does Drools
provide any such feature.
We load the drools as below
PackageBuilder builder = new PackageBuilder();
builder.addPackageFromDrl(new StringReader(drl)); //drl is the filepath of
decisiontable excel
// add the package to a rulebase (deploy the rule package).
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage(builder.getPackage());
I tried to look into api of RuleBase, tried to get the packages, Rules,
Consequence, etc etc, but could not find any method, that gets me the
condition name.
When I tried to do
Package[] packages = rulebase.getPackages();
for(Package pack : packages){
System.out.println(Package Name is : +pack.getName());
Rule[] rules = pack.getRules();
for(Rule rule : rules){
System.out.println(Rule name is : +rule.getName());
All I get is some representation of each row, but I'm specifically looking
for the value of the first column (CONDITION) for each rule.
Please offer some guidance here.
--
View this message in context:
http://drools.46999.n3.nabble.com/Is-it-possible-to-retrieve-the-collection-of-Conditions-from-DecisionTable-tp3390026p3390026.html
Sent from the Drools: User forum mailing list archive at Nabble.com.
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Re: [rules-users] Is it possible to retrieve the collection of Conditions from DecisionTable?
On 03/10/2011 18:03, Wolfgang Laun wrote:
A condition does not have a name, as you write; values of the cells
below a condition are (usually) literals.
There is no API for extracting parts of a spreadsheet. You can look at
the Drools source code (in the packages org.drools.decisiontable and
.../parser) and write whatever you need - it is not too difficult.
You can also look at drools-verifier, as that shows ho to analyse
resulting rule fragments.
Mark
-W
On 3 October 2011 17:05, RaviCKotaravi.k...@wellsfargo.com wrote:
Hi All, for suppose I have a DecisionTable like below
CONDITION ACTION
-
COND1 ACTION1
COND2 ACTION2
COND3 ACTION3
-
This is just a representation of the DecisionTable. So I need to retrieve
all the conditions and store them into a Collection like Set. Does Drools
provide any such feature.
We load the drools as below
PackageBuilder builder = new PackageBuilder();
builder.addPackageFromDrl(new StringReader(drl)); //drl is the filepath of
decisiontable excel
// add the package to a rulebase (deploy the rule package).
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage(builder.getPackage());
I tried to look into api of RuleBase, tried to get the packages, Rules,
Consequence, etc etc, but could not find any method, that gets me the
condition name.
When I tried to do
Package[] packages = rulebase.getPackages();
for(Package pack : packages){
System.out.println(Package Name is : +pack.getName());
Rule[] rules = pack.getRules();
for(Rule rule : rules){
System.out.println(Rule name is : +rule.getName());
All I get is some representation of each row, but I'm specifically looking
for the value of the first column (CONDITION) for each rule.
Please offer some guidance here.
--
View this message in context:
http://drools.46999.n3.nabble.com/Is-it-possible-to-retrieve-the-collection-of-Conditions-from-DecisionTable-tp3390026p3390026.html
Sent from the Drools: User forum mailing list archive at Nabble.com.
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[rules-users] Guvnor - Operations with snapshots
Hi everyone. I am using Guvnor 5.2, and I need to make some operations from my application. Specifically, I need to make two operations remotely: - List Snapshots, as it is possible to list packages. - Create a new snapshot from a package. Is this possible to make these operation through rest API? Thanks, Demian ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] 5.3.0 CR1 has broken existing rules/flows
I recently upgraded from 5.2.0 Final to 5.3.0 CR1 because I was experiencing memory leaks in 5.2.0 Final due to a known bug that was fixed in 5.3.0 CR1. I have a suite of FitNesse tests that exercise the majority of my rules and flows, and I can demonstrate that the memory leak is indeed fixed, but one of my tests is now failing. If I revert back to 5.2.0 Final, all is well. I've been trying to determine the root cause for the past 3 days, but I'm not getting anywhere. I suspect that it's related to an interaction between 2 rules, e.g. one rule modifies something that causes the second rule to fire, but the second rule chokes in the consequence when it tries to execute a modify() statement. If I comment out the modify portion, the rule fires fine. I wish I could provide an example, but my implementation is too complex for that and I haven't been able to reproduce it in a stand-alone example. I know a stack trace probably won't tell you much, but I've included it below just in case. If anyone has any ideas, I'd love to hear them. If there's any additional information you think might help diagnose the problem, I'd be happy to provide it. Thanks, Jamie org.drools.runtime.rule.ConsequenceException: rule: Rule 022 - Load Buyer Activity at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1101) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1029) at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1251) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:708) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:672) at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:218) at com.llbean.fraud.rule.engine.DroolsRulesEngine.invokeRules(DroolsRulesEngine.java:119) at com.llbean.fraud.rule.engine.DroolsRulesEngine.invokeRules(DroolsRulesEngine.java:81) at com.llbean.fraud.fitnesse.fixtures.tests.TestFraudRules.execute(TestFraudRules.java:116) at fit.ColumnFixture.executeIfNeeded(ColumnFixture.java:57) at fit.ColumnFixture.check(ColumnFixture.java:46) at fit.Binding$QueryBinding.doCell(Binding.java:188) at fit.ColumnFixture.doCell(ColumnFixture.java:37) at fit.Fixture.doCells(Fixture.java:171) at fit.Fixture.doRow(Fixture.java:165) at fit.ColumnFixture.doRow(ColumnFixture.java:25) at fit.Fixture.doRows(Fixture.java:159) at fit.ColumnFixture.doRows(ColumnFixture.java:18) at fit.Fixture.doTable(Fixture.java:153) at fit.Fixture.interpretFollowingTables(Fixture.java:119) at fit.Fixture.interpretTables(Fixture.java:105) at fit.Fixture.doTables(Fixture.java:79) at com.llbean.test.fitnesse.servletrunner.server.LLBFitServer.process(LLBFitServer.java:120) at com.llbean.test.fitnesse.servletrunner.server.LLBFitServer.runTests(LLBFitServer.java:40) at com.llbean.test.fitnesse.servletrunner.servlet.FitServlet.service(FitServlet.java:32) at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1530) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:829) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:458) at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:175) at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:91) at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:862) at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583) at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:178) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:272) at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214) at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113) at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165) at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217) at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161) at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138) at
Re: [rules-users] 5.3.0 CR1 has broken existing rules/flows
One way of helping isolating the problem is to set a break point for a NullPointerException. When the exception is raised do 2 things: 1. In the RuleTerminalNode where the NPE is generated, check the content of the rule attribute. This will tell you the offending rule. 2. Check which reference is null in the offending line: item.setSalience( rule.getSalience().getValue( tuple, this.rule, workingMemory ) ); Probably item is null. After that, it should be easy to isolate and simplify the 2 rules that are raising the problem. The one with the modify in the consequence (R1) and the other one where the NPE is occurring (R2). Finally, if you use the audit log, you can see the scenario where it happens. It is probably activating R2 and before firing it, triggering a modify that maintains it active, or some variation in the scenario. Once you have this data, it will be possible for us to analyze the case and fix the problem. Edson 2011/10/3 Jamie js...@llbean.com I recently upgraded from 5.2.0 Final to 5.3.0 CR1 because I was experiencing memory leaks in 5.2.0 Final due to a known bug that was fixed in 5.3.0 CR1. I have a suite of FitNesse tests that exercise the majority of my rules and flows, and I can demonstrate that the memory leak is indeed fixed, but one of my tests is now failing. If I revert back to 5.2.0 Final, all is well. I've been trying to determine the root cause for the past 3 days, but I'm not getting anywhere. I suspect that it's related to an interaction between 2 rules, e.g. one rule modifies something that causes the second rule to fire, but the second rule chokes in the consequence when it tries to execute a modify() statement. If I comment out the modify portion, the rule fires fine. I wish I could provide an example, but my implementation is too complex for that and I haven't been able to reproduce it in a stand-alone example. I know a stack trace probably won't tell you much, but I've included it below just in case. If anyone has any ideas, I'd love to hear them. If there's any additional information you think might help diagnose the problem, I'd be happy to provide it. Thanks, Jamie org.drools.runtime.rule.ConsequenceException: rule: Rule 022 - Load Buyer Activity at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1101) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1029) at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1251) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:708) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:672) at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:218) at com.llbean.fraud.rule.engine.DroolsRulesEngine.invokeRules(DroolsRulesEngine.java:119) at com.llbean.fraud.rule.engine.DroolsRulesEngine.invokeRules(DroolsRulesEngine.java:81) at com.llbean.fraud.fitnesse.fixtures.tests.TestFraudRules.execute(TestFraudRules.java:116) at fit.ColumnFixture.executeIfNeeded(ColumnFixture.java:57) at fit.ColumnFixture.check(ColumnFixture.java:46) at fit.Binding$QueryBinding.doCell(Binding.java:188) at fit.ColumnFixture.doCell(ColumnFixture.java:37) at fit.Fixture.doCells(Fixture.java:171) at fit.Fixture.doRow(Fixture.java:165) at fit.ColumnFixture.doRow(ColumnFixture.java:25) at fit.Fixture.doRows(Fixture.java:159) at fit.ColumnFixture.doRows(ColumnFixture.java:18) at fit.Fixture.doTable(Fixture.java:153) at fit.Fixture.interpretFollowingTables(Fixture.java:119) at fit.Fixture.interpretTables(Fixture.java:105) at fit.Fixture.doTables(Fixture.java:79) at com.llbean.test.fitnesse.servletrunner.server.LLBFitServer.process(LLBFitServer.java:120) at com.llbean.test.fitnesse.servletrunner.server.LLBFitServer.runTests(LLBFitServer.java:40) at com.llbean.test.fitnesse.servletrunner.servlet.FitServlet.service(FitServlet.java:32) at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1530) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:829) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:458) at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:175) at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:91) at
Re: [rules-users] Memory leak in 5.2/5.3
This memory leak is giving us a lot of problems... we need to iteratively test 400,000 items, one session for each. It was working fine with 5.1.1 and now is failing. Thanks for the test case, is very simple to reproduce, but I tried running it with: dependency groupIdorg.drools/groupId artifactIdknowledge-api/artifactId version5.3.0.CR1/version /dependency ... etc. And still fails, so I don't fully trust that this will be fixed on 5.3.0... do you have confirmation? I need to decide if I wait for 5.3 or if I advice to roll back to 5.1.1. Thanks Alejandro -- View this message in context: http://drools.46999.n3.nabble.com/rules-users-Memory-leak-in-5-2-5-3-tp3280351p3391578.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] Memory leak in 5.2/5.3
I don't know all the details about this problem, but as far as I heard, the leak was happening because jBPM was adding its listener to the kbase and/or ksession and not removing it on disposals... so the easiest way to get around the leak is to simply remove it yourself before disposing the session. Whoever fixed the problem can probably give you details about how to do that. Having said that, if you are using community version, I strongly recommend you to move to 5.3 when it is released as it brings tons of fixes and some good features. Older community versions are not maintained. If you are a Red Hat subscriber, just open a ticket for the version you want to use and they will provide you with patched binaries. Edson 2011/10/3 alopez alo...@termmed.com This memory leak is giving us a lot of problems... we need to iteratively test 400,000 items, one session for each. It was working fine with 5.1.1 and now is failing. Thanks for the test case, is very simple to reproduce, but I tried running it with: dependency groupIdorg.drools/groupId artifactIdknowledge-api/artifactId version5.3.0.CR1/version /dependency ... etc. And still fails, so I don't fully trust that this will be fixed on 5.3.0... do you have confirmation? I need to decide if I wait for 5.3 or if I advice to roll back to 5.1.1. Thanks Alejandro -- View this message in context: http://drools.46999.n3.nabble.com/rules-users-Memory-leak-in-5-2-5-3-tp3280351p3391578.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
[rules-users] pipeline API
looking for any documentation regarding the pipeline api. Trying to get an amqp queue set as an entry point Thanks Bobby ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] 5.3.0 CR1 has broken existing rules/flows
This is very good info. I have found those Drools ConsequenceExceptions a real PITA to troubleshoot. I wonder if the exception could be enhanced to show this info so users don't have to debug it? I mean, to have the exception message show the true culprit rule name, or something useful like that? -- View this message in context: http://drools.46999.n3.nabble.com/5-3-0-CR1-has-broken-existing-rules-flows-tp3390922p3392014.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 - Operations with snapshots
On 2011/10/4 1:54, Demian Calcaprina wrote: Hi everyone. I am using Guvnor 5.2, and I need to make some operations from my application. Specifically, I need to make two operations remotely: - List Snapshots, as it is possible to list packages. - Create a new snapshot from a package. Is this possible to make these operation through rest API? Hi, Start from 5.3, Guvnor Packages are fully versioned. I would recommend you to use a vesioned package instead of package snapshot. Package snapshot will be deprecated in the future. Cheers, Jervis Thanks, Demian ___ 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] pipeline API
On 2011/10/4 9:08, Bobby Richards wrote: looking for any documentation regarding the pipeline api. Trying to get an amqp queue set as an entry point Have you looked into Drools Camel integration [1]? Camel should already have AMQP component. [1]. http://docs.jboss.org/drools/release/5.3.0.CR1/droolsjbpm-integration-docs/html/ch01.html Cheers, Jervis Thanks Bobby ___ 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] Embeding BRL Editor in application
Hello everybody, I am new to drools. I want to embed the BRL Editor in our application. I have read somewhere that it can be done by calling the standaloneEditorServlet. When I call the standaloneEditorServlet it appends pUUID=7c89819b-221d-470b-9fce-4bd3bbe02e75. I have to pass some initialization parameters to the servlet. I know the package name, categoryName but what will be the brlSource. Do I need to pass the whole brl (xml) file as parameter? Another thing on which action the standaloneEditorServlet is called. Please help Regards -- View this message in context: http://drools.46999.n3.nabble.com/Embeding-BRL-Editor-in-application-tp3392239p3392239.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] Embed BRL Editor in application
Hello everybody, I am new to drools. I want to embed the BRL Editor in our application. I have read somewhere that it can be done by calling the standaloneEditorServlet. When I call the standaloneEditorServlet it appends pUUID=7c89819b-221d-470b-9fce-4bd3bbe02e75. I have to pass some initialization parameters to the servlet. I know the package name, categoryName but what will be the brlSource. Do I need to pass the whole brl (xml) file as parameter? Another thing on which action the standaloneEditorServlet is called. Please help Regards -- View this message in context: http://drools.46999.n3.nabble.com/Embed-BRL-Editor-in-application-tp3392242p3392242.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
