Problem importing bpmn process into oryx designer
by sumatheja
Hi,
I've created a simple bpmn flow which has a start noden rule-flow task
and end. When I try to import it from oryx designer and validate it it
gives an error saying "cannot find process image". Can anyone help me know
what I'm missing.
--
cheers
Sumatheja Dasararaju
11 years, 12 months
Drools Clients
by bhargav99
Hi ,
We are evaluating various open source rule engines market.* Drools
*being one of the most popular products in this category , we like to know
if we can get a list of *clients *or *customers* currently using *drools*
rule engine. This information would be vital for our evaluraion process.
Thanks,
Bhargav
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11 years, 12 months
unable to write a function in guvnor with generic List as a parameter
by sumatheja
Hi,
I'm trying to write a function in guvnor like
function int applyThresholds(List<Integer> thresholdList, int totalPoints)
It says the List<Integer> ClassNotFound even though I've java.util.List in
the imports. when i remove <Integer> generic it works fine. I'm using
drools and guvnor 5.4 CR1. Am I missing anything? Thanks in advance.
--
cheers
Sumatheja Dasararaju
11 years, 12 months
Why is solving a partial puzzle much slower than generating one from scratch?
by aitchnyu
I am making a 3x3 Sudoku solver with Drools planner. The planning entities
are the digits. The problem facts are the rows (planning variable) and
columns.
When I set Drools Planner to solve a problem where no digit is initialized,
it gives a perfect solution in ~15 secs. But when I set a few digits as
initialized, it never finds a solution. It always lists 8 hard constraints
broken on termination.
I implemented the moves as:
if(digit.getFixed()==false){
moveList.add(new RowChangeMove(digit, toRow));
}
If the digit is fixed, dont make a move object for it.
Earlier, I implemented it in isMoveDoable: if the digit.getFixed() is true,
it returns false. Both do not work.
20:31:13.442 [main] INFO o.d.p.c.l.DefaultLocalSearchSolverPhase - Phase
local search finished: step total (978), time spend (60061), best score
(-8).
20:31:13.442 [main] INFO o.d.p.core.solver.DefaultSolver - Solved: time
spend (60061), best score (-8), average calculate count per second (7433).
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11 years, 12 months
Is there a faster way of doing this in Drools ?
by soumya_sd
I've a use case where I need to create a rule dynamically every time the user
sends a request.
My current understanding of Drools is that you need to create a
KnowledgeBuilder and then add the rules
I'm creating the KnowledgeBase as follows.
private static KnowledgeBase readKnowledgeBase() throws Exception {
long t1 = System.currentTimeMillis();
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
long t11 = System.currentTimeMillis();
kbuilder.add(
org.drools.io.ResourceFactory.newByteArrayResource(getRule()),
ResourceType.DRL);
long t2 = System.currentTimeMillis();
KnowledgeBuilderErrors errors = kbuilder.getErrors();
if (errors.size() > 0) {
for (KnowledgeBuilderError error: errors) {
System.err.println(error);
}
throw new IllegalArgumentException("Could not parse
knowledge.");
}
long t3 = System.currentTimeMillis();
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
long t4 = System.currentTimeMillis();
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
long t5 = System.currentTimeMillis();
Collection<KnowledgePackage> kpackages =
kbase.getKnowledgePackages();
for (KnowledgePackage knowledgePackage : kpackages) {
System.out.println("Package -------- " + knowledgePackage.getName());
Collection<Rule> rules = knowledgePackage.getRules();
for (Rule rule : rules) {
System.out.println("****" + rule.getName());
}
}
long t6 = System.currentTimeMillis();
System.out.println( (t11-t1) + " " + (t2-t11) + " " + ( t3-t2) + " " +
( t4-t3) + " " + ( t5-t4) + " " + ( t6-t5)+ " " );
return kbase;
}
Based on the timing logs the code take majority (more than 80%) of time in
only these two operations. Is there a way to make it faster ?
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add( org.drools.io.ResourceFactory.newByteArrayResource(getRule()),
ResourceType.DRL);
thanks.
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11 years, 12 months
Start of Guvnor 5.4.0.CR1 results in javax.naming.NamingException
by FlyingEagle
Hi,
I try to start Guvnor 5.4.0.CR1 under JBoss 7.0.0.
I used the guvnor-5.4.0.CR1-jboss-as-7.0.war from the
guvnor-distribution-5.4.0.CR1.
The guvnor.war was deployed successfully on the app server, but when I try
to start Guvnor via Firefox, I get the following exception:
javax.naming.NamingException: Failed to get context with name comp
at
org.jboss.as.naming.context.NamespaceObjectFactory.getObjectInstance(NamespaceObjectFactory.java:71)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:283)
[:1.6.0_12]
at javax.naming.spi.NamingManager.getContext(NamingManager.java:422)
[:1.6.0_12]
at
javax.naming.spi.ContinuationContext.getTargetContext(ContinuationContext.java:38)
[:1.6.0_12]
at
javax.naming.spi.NamingManager.getContinuationContext(NamingManager.java:770)
[:1.6.0_12]
at org.jboss.as.naming.NamingContext.lookup(NamingContext.java:175)
at org.jboss.as.naming.NamingContext.lookup(NamingContext.java:207)
at javax.naming.InitialContext.lookup(InitialContext.java:392) [:1.6.0_12]
at
org.jboss.seam.transaction.DefaultSeamTransaction.getEJBContext(DefaultSeamTransaction.java:165)
[seam-transaction-3.1.0.Final.jar:]
at
org.jboss.seam.transaction.DefaultSeamTransaction.createCMTTransaction(DefaultSeamTransaction.java:132)
[seam-transaction-3.1.0.Final.jar:]
at
org.jboss.seam.transaction.DefaultSeamTransaction.getSeamTransaction(DefaultSeamTransaction.java:116)
[seam-transaction-3.1.0.Final.jar:]
It seems, that anything with naming is missing or wrong. I have read, that
Guvnor 5.4.0 uses seam 3, instead of seam 2. May that be the cause?
Or is something wrong with the xml files in \WEB-INF? I have found there
some "TODO" comments in the web.xml.
Has anybody an idea, what the problem is?
Thx for each idea
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11 years, 12 months
Help
by seagull
Hi everyone,
I am new to drools.net and I am testing some basic commands but can't seem
to find help anywhere! I am trying to print the contents of a variable but
for some reason, the contents are not printed! The first line (i.e. hello)
on the other hand is being printed.. Is there a common mistake I may be
doing?
Thanks!
rule "testing"
when
p: Person (name == "john")
then
Console.WriteLine ("hello");
Console.WriteLine (p.name);
end
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11 years, 12 months
