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<div class=Section1>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Right, I want to use the Fluent API to create dynamic processes.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <b>On Behalf Of </b>Mauricio
Salatino<br>
<b>Sent:</b> Monday, November 02, 2009 2:14 PM<br>
<b>To:</b> Rules Users List<br>
<b>Subject:</b> Re: [rules-users] How to execute a Process API result?<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>That are only the fluent api to
create processes. I recommend you the other approach:<o:p></o:p></p>
<pre>KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();<br>
kbuilder.add( ResourceFactory.newClassPathResource("MyProcess.rf"),<br>
<br>
<o:p></o:p></pre><pre> ResourceType.DRF );<br>
KnowledgeBuilderErrors errors = kbuilder.getErrors();<br>
if (errors.size() > 0) {<br>
for (KnowledgeBuilderError error: errors) {<br>
System.err.println(error);<br>
<br>
<o:p></o:p></pre><pre> }<br>
throw new IllegalArgumentException("Could not parse knowledge.");<br>
}<o:p></o:p></pre>
<p class=MsoNormal><o:p> </o:p></p>
<pre>KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();<br>
<br>
<o:p></o:p></pre><pre><br>
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());<br>
<br>
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();<br>
<br>
<br>
ksession.startProcess("com.sample.MyProcess");<br>
<br>
<o:p></o:p></pre>
<p class=MsoNormal><br>
If you need the reference to the process instance you can do:<br>
WorkFlowProcessInstance processInstance = ksession.startProcess(...);<br>
<br>
<br>
<br>
Work<o:p></o:p></p>
<div>
<p class=MsoNormal>2009/11/2 Scott Stevenson <<a
href="mailto:scott.stevenson@datacert.com">scott.stevenson@datacert.com</a>><o:p></o:p></p>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>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:</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
text-indent:.5in'><span style='font-size:11.0pt;color:#1F497D'>RuleFlowProcessFactory
factory =
RuleFlowProcessFactory.createProcess("org.drools.sample.workflow.dynamic");</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>
factory</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>
.name("HelloWorldRuleSet")</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>
.version("1.0")</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>
.packageName("org.drools")</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>
.startNode(1).name("Start").done()</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>
.actionNode(2)</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>
.name("Action")</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>
.action("java",
"System.out.println(\"Inside Action 1\");").done()</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>
.endNode(3).name("End").done()</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>
.connection(1, 2)</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>
.connection(2, 3);</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>
factory.validate().getProcess();</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>How does the getProcess() result get
added to a KnowledgeBase?</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>Thanks,</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>Scott</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;
border-color:-moz-use-text-color -moz-use-text-color'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt'>From:</span></b><span style='font-size:10.0pt'> <a
href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>
[mailto:<a href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>]
<b>On Behalf Of </b>Mauricio Salatino<br>
<b>Sent:</b> Monday, November 02, 2009 1:57 PM<o:p></o:p></span></p>
<div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'><br>
<b>To:</b> Rules Users List<br>
<b>Subject:</b> Re: [rules-users] How to execute a Process API result?<o:p></o:p></span></p>
</div>
</div>
</div>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Ok,
so you need to start using the Drools 5 APIs.<br>
Please take a look at the Drools 5 documentation:<br>
<a
href="http://downloads.jboss.com/drools/docs/5.0.1.26597.FINAL/drools-flow/html_single/index.html#d0e1375"
target="_blank">http://downloads.jboss.com/drools/docs/5.0.1.26597.FINAL/drools-flow/html_single/index.html#d0e1375</a><br>
<br>
In the section 3.2 <o:p></o:p></p>
<h2>Using a Process in Your Application<o:p></o:p></h2>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><br>
you will find the correct api's.<br>
Greetings.<o:p></o:p></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>2009/11/2
Scott Stevenson <<a href="mailto:scott.stevenson@datacert.com"
target="_blank">scott.stevenson@datacert.com</a>><o:p></o:p></p>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>I’m working with Drools 5.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;
border-color:-moz-use-text-color'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt'>From:</span></b><span style='font-size:10.0pt'> <a
href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>
[mailto:<a href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>]
<b>On Behalf Of </b>Mauricio Salatino<br>
<b>Sent:</b> Monday, November 02, 2009 1:45 PM<br>
<b>To:</b> Rules Users List<br>
<b>Subject:</b> Re: [rules-users] How to execute a Process API result?</span><o:p></o:p></p>
</div>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>Are you
working just with the Drools 4 version?<br>
Or you can jump to the Drools 5 version?<o:p></o:p></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On
Mon, Nov 2, 2009 at 5:41 PM, Scott Stevenson <<a
href="mailto:scott.stevenson@datacert.com" target="_blank">scott.stevenson@datacert.com</a>>
wrote:<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I'm
trying to execute the result of the Process API and running into<br>
problems most likely stemming from my ignorance. I'm creating a new<br>
process following the sample code from section 3.1.3.2 of the User<br>
Guide. My sample process consists of:<br>
1. StartNode<br>
2. ActionNode that prints Hello World<br>
3. EndNode<br>
<br>
What I don't understand is how to get my new process into a<br>
KnowledgeBase and KnowledgeSession for execution. I've tried the<br>
following (Drools 4 method, I believe) as well:<br>
<br>
AbstractRuleBase ruleBase = (AbstractRuleBase)<br>
RuleBaseFactory.newRuleBase();<br>
ruleBase.addProcess(createProcess());<br>
InternalWorkingMemory workingMemory = new
ReteooWorkingMemory(1,<br>
ruleBase);<br>
<br>
workingMemory.startProcess("org.drools.sample.workflow.dynamic");<br>
<br>
The result of the previous code is a RuntimeException (unable to execute<br>
Action). Inner exception is null pointer from inside the<br>
ActionNodeInstance class. Where am going wrong in implementing the<br>
Process API?<br>
<br>
Thank you,<br>
Scott Stevenson<br>
<br>
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