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_0Action0Invoker.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;
ListKnowledgePackage list = new ArrayListKnowledgePackage();
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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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-boun...@lists.jboss.org
[mailto:rules-users-boun...@lists.jboss.org] On Behalf Of ramram8
Sent: Friday, November 20, 2009 3:19 AM
To: rules-users@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;
ListKnowledgePackage list = new
ArrayListKnowledgePackage();
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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Re: [rules-users] How to execute a Process API result?
Sorry, can't help you there. I don't have any experience with GWT. -Original Message- From: rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org] On Behalf Of ramram8 Sent: Friday, November 20, 2009 2:07 PM To: rules-users@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@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] How to execute a Process API result?
Got it! Thanks Kris and Mauricio for your guidance on this. -Original Message- From: Kris Verlaenen [mailto:kris.verlae...@cs.kuleuven.be] Sent: Monday, November 02, 2009 6:01 PM To: Rules Users List; Scott Stevenson Subject: Re: [rules-users] How to execute a Process API result? Scott, A process is also compiled before it is executable. To load a process constructed using the API, either: * load it as any other process by transforming it to XML first using the XmlRuleFlowProcessDumper * compile the process before adding it to your rulebase, using ProcessBuilder.buildProcess(..) Kris Quoting Scott Stevenson scott.steven...@datacert.com: 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 Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] How to execute a Process API result?
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
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
Re: [rules-users] How to execute a Process API result?
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
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/html_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
Re: [rules-users] How to execute a Process API result?
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
Re: [rules-users] How to execute a Process API result?
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
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- Salatino Salaboy Mauricio -
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Re: [rules-users] How to execute a Process API result?
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;
ListKnowledgePackage list = new
ArrayListKnowledgePackage();
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-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
Re: [rules-users] How to execute a Process API result?
Scott, A process is also compiled before it is executable. To load a process constructed using the API, either: * load it as any other process by transforming it to XML first using the XmlRuleFlowProcessDumper * compile the process before adding it to your rulebase, using ProcessBuilder.buildProcess(..) Kris Quoting Scott Stevenson scott.steven...@datacert.com: 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 Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
