I'm working with Drools 5. From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Mauricio Salatino Sent: Monday, November 02, 2009 1:45 PM To: Rules Users List Subject: Re: [rules-users] How to execute a Process API result? Are you working just with the Drools 4 version? Or you can jump to the Drools 5 version? On Mon, Nov 2, 2009 at 5:41 PM, Scott Stevenson <scott.stevenson(a)datacert.com&gt; wrote: I'm trying to execute the result of the Process API and running into problems most likely stemming from my ignorance. I'm creating a new process following the sample code from section 3.1.3.2 of the User Guide. My sample process consists of: 1. StartNode 2. ActionNode that prints Hello World 3. EndNode What I don't understand is how to get my new process into a KnowledgeBase and KnowledgeSession for execution. I've tried the following (Drools 4 method, I believe) as well: AbstractRuleBase ruleBase = (AbstractRuleBase) RuleBaseFactory.newRuleBase(); ruleBase.addProcess(createProcess()); InternalWorkingMemory workingMemory = new ReteooWorkingMemory(1, ruleBase); workingMemory.startProcess("org.drools.sample.workflow.dynamic"); The result of the previous code is a RuntimeException (unable to execute Action). Inner exception is null pointer from inside the ActionNodeInstance class. Where am going wrong in implementing the Process API? Thank you, Scott Stevenson _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - http://salaboy.wordpress.com - http://www.jbug.com.ar - Salatino "Salaboy" Mauricio -

I read that section but I'm still not clear how to add my process (created like the section just before) to the KnowledgeBase. Section 3.2 shows adding an existing .rf file. I have this code: RuleFlowProcessFactory factory = RuleFlowProcessFactory.createProcess("org.drools.sample.workflow.dynamic "); factory .name("HelloWorldRuleSet") .version("1.0") .packageName("org.drools") .startNode(1).name("Start").done() .actionNode(2) .name("Action") .action("java", "System.out.println(\"Inside Action 1\");").done() .endNode(3).name("End").done() .connection(1, 2) .connection(2, 3); factory.validate().getProcess(); How does the getProcess() result get added to a KnowledgeBase? Thanks, Scott From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Mauricio Salatino Sent: Monday, November 02, 2009 1:57 PM To: Rules Users List Subject: Re: [rules-users] How to execute a Process API result? Ok, so you need to start using the Drools 5 APIs. Please take a look at the Drools 5 documentation: http://downloads.jboss.com/drools/docs/5.0.1.26597.FINAL/drools-flow/htm l_single/index.html#d0e1375 In the section 3.2 Using a Process in Your Application you will find the correct api's. Greetings. 2009/11/2 Scott Stevenson <scott.stevenson(a)datacert.com&gt; I'm working with Drools 5. From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Mauricio Salatino Sent: Monday, November 02, 2009 1:45 PM To: Rules Users List Subject: Re: [rules-users] How to execute a Process API result? Are you working just with the Drools 4 version? Or you can jump to the Drools 5 version? On Mon, Nov 2, 2009 at 5:41 PM, Scott Stevenson <scott.stevenson(a)datacert.com&gt; wrote: I'm trying to execute the result of the Process API and running into problems most likely stemming from my ignorance. I'm creating a new process following the sample code from section 3.1.3.2 of the User Guide. My sample process consists of: 1. StartNode 2. ActionNode that prints Hello World 3. EndNode What I don't understand is how to get my new process into a KnowledgeBase and KnowledgeSession for execution. I've tried the following (Drools 4 method, I believe) as well: AbstractRuleBase ruleBase = (AbstractRuleBase) RuleBaseFactory.newRuleBase(); ruleBase.addProcess(createProcess()); InternalWorkingMemory workingMemory = new ReteooWorkingMemory(1, ruleBase); workingMemory.startProcess("org.drools.sample.workflow.dynamic"); The result of the previous code is a RuntimeException (unable to execute Action). Inner exception is null pointer from inside the ActionNodeInstance class. Where am going wrong in implementing the Process API? Thank you, Scott Stevenson _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - http://salaboy.wordpress.com - http://www.jbug.com.ar - Salatino "Salaboy" Mauricio - _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - http://salaboy.wordpress.com - http://www.jbug.com.ar - Salatino "Salaboy" Mauricio -

I am using Drools Flow BAM (5.1.0.M1) module to store the processes instances for audit purpose. I generated the DDL with the help of Hibernate Tools against the MYSQL 5.1(INNODB) DDL for the 2 tables are given below -- the interesting part is the "id" column as "varchar" ---- this gives error when we try to execute the DDL against the mysql. create table AUDIT_NODE_INSTANCE_LOG ( id varchar(255) not null auto_increment, type integer, nodeInstanceId varchar(255), nodeId varchar(255), processInstanceId bigint, processId varchar(255), DATE datetime, primary key (id) ) ENGINE=InnoDB; create table AUDIT_PROCESS_INSTANCE_LOG ( id varchar(255) not null auto_increment, processInstanceId bigint, processId varchar(255), START_DATE datetime, END_DATE datetime, primary key (id) ) ENGINE=InnoDB; The error we get is Error: Incorrect column specifier for column 'id' SQLState: 42000 ErrorCode: 1063 Error occured in: create table AUDIT_NODE_INSTANCE_LOG ( id varchar(255) not null auto_increment, type integer, nodeInstanceId varchar(255), nodeId varchar(255), processInstanceId bigint, processId varchar(255), DATE datetime, primary key (id) ) ENGINE=InnoDB I used a naming strategy for the hibernate that's why the above table names. My question is when the primary key generation is "native" why not let these columns be of type 'long' and get generated as "bigint" for the sql type. If they can't be changed - should we just extend the above classes and have these fields as long/bigint. Any suggestion will be appreciated. Thanks Vijay

Here is my attempt at using the Drools 5 API to execute my dynamically created Process: KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(); org.drools.rule.Package p = new org.drools.rule.Package("sample"); p.addProcess(createProcess()); KnowledgePackageImp kpi = new KnowledgePackageImp(); kpi.pkg = p; List<KnowledgePackage> list = new ArrayList<KnowledgePackage>(); list.add(kpi); kbase.addKnowledgePackages(list); StatefulKnowledgeSession ksess = kbase.newStatefulKnowledgeSession(); ksess.startProcess("org.drools.sample.workflow.dynamic"); I still get the same null pointer error. Perhaps the problem is in my implementation of the Process API? The code under createProcess is this: RuleFlowProcessFactory factory = RuleFlowProcessFactory.createProcess("com.datacert.workflow.dynamic"); factory .name("HelloWorldRuleSet") .version("1.0") .packageName("org.drools") .startNode(1).name("Start").done() .actionNode(2) .name("Action") .action("java", "System.out.println(\"Inside Action 1\");").done() .endNode(3).name("End").done() .connection(1, 2) .connection(2, 3); return factory.validate().getProcess(); Thanks, Scott From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Mauricio Salatino Sent: Monday, November 02, 2009 2:14 PM To: Rules Users List Subject: Re: [rules-users] How to execute a Process API result? That are only the fluent api to create processes. I recommend you the other approach: KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); kbuilder.add( ResourceFactory.newClassPathResource("MyProcess.rf"), ResourceType.DRF ); KnowledgeBuilderErrors errors = kbuilder.getErrors(); if (errors.size() > 0) { for (KnowledgeBuilderError error: errors) { System.err.println(error); } throw new IllegalArgumentException("Could not parse knowledge."); } KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(); kbase.addKnowledgePackages(kbuilder.getKnowledgePackages()); StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession(); ksession.startProcess("com.sample.MyProcess"); If you need the reference to the process instance you can do: WorkFlowProcessInstance processInstance = ksession.startProcess(...); Work 2009/11/2 Scott Stevenson <scott.stevenson(a)datacert.com&gt; I read that section but I'm still not clear how to add my process (created like the section just before) to the KnowledgeBase. Section 3.2 shows adding an existing .rf file. I have this code: RuleFlowProcessFactory factory = RuleFlowProcessFactory.createProcess("org.drools.sample.workflow.dynamic "); factory .name("HelloWorldRuleSet") .version("1.0") .packageName("org.drools") .startNode(1).name("Start").done() .actionNode(2) .name("Action") .action("java", "System.out.println(\"Inside Action 1\");").done() .endNode(3).name("End").done() .connection(1, 2) .connection(2, 3); factory.validate().getProcess(); How does the getProcess() result get added to a KnowledgeBase? Thanks, Scott From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Mauricio Salatino Sent: Monday, November 02, 2009 1:57 PM To: Rules Users List Subject: Re: [rules-users] How to execute a Process API result? Ok, so you need to start using the Drools 5 APIs. Please take a look at the Drools 5 documentation: http://downloads.jboss.com/drools/docs/5.0.1.26597.FINAL/drools-flow/htm l_single/index.html#d0e1375 In the section 3.2 Using a Process in Your Application you will find the correct api's. Greetings. 2009/11/2 Scott Stevenson <scott.stevenson(a)datacert.com&gt; I'm working with Drools 5. From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Mauricio Salatino Sent: Monday, November 02, 2009 1:45 PM To: Rules Users List Subject: Re: [rules-users] How to execute a Process API result? Are you working just with the Drools 4 version? Or you can jump to the Drools 5 version? On Mon, Nov 2, 2009 at 5:41 PM, Scott Stevenson <scott.stevenson(a)datacert.com&gt; wrote: I'm trying to execute the result of the Process API and running into problems most likely stemming from my ignorance. I'm creating a new process following the sample code from section 3.1.3.2 of the User Guide. My sample process consists of: 1. StartNode 2. ActionNode that prints Hello World 3. EndNode What I don't understand is how to get my new process into a KnowledgeBase and KnowledgeSession for execution. I've tried the following (Drools 4 method, I believe) as well: AbstractRuleBase ruleBase = (AbstractRuleBase) RuleBaseFactory.newRuleBase(); ruleBase.addProcess(createProcess()); InternalWorkingMemory workingMemory = new ReteooWorkingMemory(1, ruleBase); workingMemory.startProcess("org.drools.sample.workflow.dynamic"); The result of the previous code is a RuntimeException (unable to execute Action). Inner exception is null pointer from inside the ActionNodeInstance class. Where am going wrong in implementing the Process API? Thank you, Scott Stevenson _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - http://salaboy.wordpress.com - http://www.jbug.com.ar - Salatino "Salaboy" Mauricio - _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - http://salaboy.wordpress.com - http://www.jbug.com.ar - Salatino "Salaboy" Mauricio - _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - http://salaboy.wordpress.com - http://www.jbug.com.ar - Salatino "Salaboy" Mauricio -

Does changing the type of the id field from String to long fix your issue? Because to me it seems that MySQL is not accepting the name "id" as a valid column name? I guess changing the mapping so that it uses a different column name could fix the issue? Kris Quoting Vijay K Pandey <VPandey(a)mdes.ms.gov&gt;: Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm

Best might indeed be to update the id to a long instead of a String. Also check out http://opensource.atlassian.com/projects/hibernate/browse/HB-1113 Could you open a JIRA for this? Kris Quoting Vijay K Pandey <VPandey(a)mdes.ms.gov&gt;: Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm

Created a JIRA https://jira.jboss.org/jira/browse/JBRULES-2325 Vijay -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Kris Verlaenen Sent: Tuesday, November 03, 2009 4:44 AM To: Rules Users List; Vijay K Pandey Subject: Re: [rules-users] Drools Flow BAM Module(5.1.0.M1) - Why primary key's are of string/varchar type Best might indeed be to update the id to a long instead of a String. Also check out http://opensource.atlassian.com/projects/hibernate/browse/HB-1113 Could you open a JIRA for this? Kris Quoting Vijay K Pandey <VPandey(a)mdes.ms.gov&gt;: > > > > > > > > > > > > > > Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

This is how I ran my dynamic process: Public static final void main(String[] args) { String xml = XmlRuleFlowProcessDumper.INSTANCE.dump(createProcess()); System.out.println(xml); KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); kbuilder.add( ResourceFactory.newByteArrayResource(xml.getBytes()), ResourceType.DRF ); KnowledgeBuilderErrors errors = kbuilder.getErrors(); if (errors.size() > 0) { for (KnowledgeBuilderError error: errors) { System.err.println(error); } throw new IllegalArgumentException("Could not parse knowledge."); } KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(); kbase.addKnowledgePackages(kbuilder.getKnowledgePackages()); StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession(); WorkflowProcessInstance pi = (WorkflowProcessInstance) ksession.startProcess("com.datacert.workflow.dynamic"); } -Scott -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of ramram8 Sent: Friday, November 20, 2009 3:19 AM To: rules-users(a)lists.jboss.org Subject: Re: [rules-users] How to execute a Process API result? Hi All I am also trying to build a dynamic process to be used. I am having some difficulties in the build where I having this exception below is the sample code that I am using: java.lang.NoClassDefFoundError: sample/Process_sample_0 at sample.Process_sample_0Action0Invoker.execute(Process_sample_0Action0Inv oker.java:20) Also I have a question can I use this dynamic process inside the GWT web console? and How? Please help in this issue public static final void main(String[] args) { try { KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(); org.drools.rule.Package p = new org.drools.rule.Package("sample"); RuleFlowProcess process = createProcess(); p.addProcess(process); KnowledgePackageImp kpi = new KnowledgePackageImp(); kpi.pkg = p; List<KnowledgePackage> list = new ArrayList<KnowledgePackage>(); list.add(kpi); org.drools.compiler.PackageBuilder pbuilder = new PackageBuilder(); pbuilder.addPackage(p); org.drools.compiler.ProcessBuilder builder = new ProcessBuilder(pbuilder); builder.buildProcess(process, null); kbase.addKnowledgePackages(list); StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession(); System.out.println("=======>>> process.getId() ["+process.getId()+"]"); // starting the process ksession.startProcess( process.getId() ); ksession.fireAllRules(); } catch (Throwable t) { t.printStackTrace(); } } public static RuleFlowProcess createProcess() { String processName = "org.drools.HelloWorldJoinSplit"; RuleFlowProcessFactory factory = RuleFlowProcessFactory.createProcess(processName); factory // Header .name("HelloWorldJoinSplit") .version("1.0") .packageName("sample") // Nodes .startNode(1).name("Start").done() .actionNode(2).name("Action 1") .action("java", "System.out.println(\"Inside Action 1\")").done() .endNode(3).name("End").done() // Connections .connection(1, 2) .connection(2, 3); RuleFlowProcess process = factory.validate().getProcess(); System.out.println(" ====== >> ["+process.getId()+"]"); return process; } -- View this message in context: http://old.nabble.com/How-to-execute-a-Process-API-result--tp26169577p26 433405.html Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Sorry, can't help you there. I don't have any experience with GWT. -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of ramram8 Sent: Friday, November 20, 2009 2:07 PM To: rules-users(a)lists.jboss.org Subject: Re: [rules-users] How to execute a Process API result? Thanks Scott for the help After using the code you provided the process worked fine. I just have another question : 1-Can we use the Dynamic process with the GWT web console? 2-If we can, How? and If we cant, Is there an alternative to use dynamic process with GWT web console? -- View this message in context: http://old.nabble.com/How-to-execute-a-Process-API-result--tp26169577p26 446500.html Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users