Re: [rules-users] How to execute a Process API result?
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;
}
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