Right, I want to use the Fluent API to create dynamic processes.
From: rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@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.steven...@datacert.com> 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-boun...@lists.jboss.org [mailto:rules-users-boun...@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.steven...@datacert.com> I'm working with Drools 5. From: rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@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.steven...@datacert.com> 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@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@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@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - http://salaboy.wordpress.com - http://www.jbug.com.ar - Salatino "Salaboy" Mauricio -
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