matrix style decision tables
by kioto mitsubisi
Hi all,
I want to use decision tables of Drools in xls format. I need tables to be matrix.
C1 C2 C3
C1 T
C2 F F
C3 T T F
My decision table should similar to something like above. It will be a symmetric matrix and the action or result will be the
corresponding cell. I mean I will give the parameters say C1 and C3 and drools will tell me that it is T.
Can I do this? in RuleMatrixSheetListener javadoc, it states something like matrix style decision tables
but I didn't understand anything from it.
15 years, 11 months
Declaring events programmatically
by Samuli Saarinen
Hello,
I'm looking for a way to declare facts as events using an API. Would
anyone happen to know if such an API exists in drools?
Cheers,
Samuli
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15 years, 11 months
Custom operator
by Bruno Freudensprung
Hello,
I'd like to implement a custom "lucenematches" operator that would
enable writing conditions like:
$d : Doc(text lucenematches "(foo AND bar) OR roam~0.8")
As I've taken a look at the following post on athico
(http://blog.athico.com/2009/05/imperfect-evaluations.html), and seen
that the appendix B of the "Drools JBoss Rules 5.0 Developer's Guide"
book that deals with custom operators, I am rather confident that I will
find my way in implementing my operator (if not, I'll post here again :-)).
However, I wonder if it will be possible to add my "lucenematches"
operator to the "operator" drop-down list of the Eclipse's Business Rule
Editor.
Does anyone have an idea?
Best regards,
Bruno.
15 years, 11 months
CE not
by david.bao
Hi,
I'm a newbie of Drools Fusion. I have a requirement as following:
If Event A is inserted into the working memory and in the following 5
seconds there is no Event B, some action will be performed.
Here is my rule script
import com.foo.event.Event
rule "test"
when
$event1 : Event(eventNo == "A")
Event(eventNo == "B", this not startedby [5s] $event1 )
then
System.out.println("there is no Event B in 5 seconds");
end
Java code:
session.insert( event1 );
clock.advanceTime( 6, TimeUnit.SECONDS );
session.insert(event2);
session.fireAllRules();
this works. But if i do not insert event2 and the rule will not be fired.
I also tried
not Event(eventNo == "B", this startedby [5s] $event1 )
not work also
Thanks
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15 years, 11 months
Drools Flow Remote API ?
by magicalpig
I'm considering Drools Flow for a project that requires a workflow enactment
engine. One concern I have is how much effort it might take to make remote
calls to the engine. I plan on running the engine in its own JVM. I would
then like for servlets to talk to the engine, for instance to tell it that
Work Item XYZ has been completed successfully. It doesn't seem as though any
API is exposed for remote clients though. Would I have to write my own
interface which listens for the RMI calls from the servlets and then maps
them to calls to the native API of the Drools Flow engine?
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15 years, 11 months
GWT Console and WSHT Rendering
by sam.squire＠paretopartners.com
Hello,
Does anyone know where the form data in Evaluation.bpmn comes from? I am
referring to the dropdown list and the checkboxes in the displayed form
from the gwt-console.
They do not seem to come from Evaluation.bpmn itself.
Are they inserted into the H2 database? If so, where and when?
Sam Squire
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15 years, 11 months
Drools Flow BAM
by Prafull Kumar
Hi,
Now we have the extensive BAM requirement on the Drools Flow. From the documents
I got a good understanding of the BAM support, but I would like to clarify the
following points:
1. In the ProcessEventListener can we embed required data from the process,
global variables?
Example I see the following in the file generated by
KnowledgeRuntimeLoggerFactory log file:
<org.drools.audit.event.RuleFlowVariableLogEvent>
<type>33</type>
<processId>Demo</processId>
<processName>Demo</processName>
<processInstanceId>0</processInstanceId>
<variableId>request</variableId>
<variableInstanceId>request</variableInstanceId>
<objectToString>requestID SGH50801DV_20101021214848_0 status
INTERMEDIATE</objectToString>
</org.drools.audit.event.RuleFlowVariableLogEvent>
Its good, But I would like to log the variables as the workflow executes, so
that I can generate the meaningful reports. e.g. If the flow takes one path I
would like to log a variable of a object and for another maybe another part of
the object.
It will help me to create the kind of report I am looking for. Please advice.
2. Any idea on the performance impact if we log these events in the database.
Does the process waits till the event is written in database or this happens
asynchronously as its a event? Please clarify.
Thanks in advance.
Regards, Prafull
15 years, 11 months
build and branches
by Mark Proctor
We now have quite a few people working on different things and the build
is breaking a lot and those breaking it are just leaving it broken.
If you are doing feature development, can you please work in a branch
and commit regularly there. Then sync up with trunk prior to a merge and
make sure you do a full build there before commiting the merge.
If you are doing minor bug fixing then that is ok in trunk, but you MUST
monitor the build closely and jump on it if it breaks.
We are looking into moving to GIT to facilitate this type of development.
Thanks
Mark
15 years, 11 months
[FUSION] Detect the absence of an event when you don't know that the event is missing.
by Tina Vießmann
Hi,
I'm working on a use case where I want to know if 20 events with a
specific value are contained in at maximum the last 150 events. So far I
know what have to do. ;-)
My problem is that as extension to my condition, the rule shall also
trigger if one ore more events are missing. But I don't know the time
interval with which the events arrive, so that I don't know when a new
event should arrive and by implication I don't know about the absence of
an event.
In our environment events arrive in "counts" and not in a specific time
interval as e.g. ever 1 second. So we talk about the last two or 150
counts if we talk about the last two ore 150 data packages received.
Yes, behind a count always is a time interval, but only the data source
knows about the time interval. My recipient doesn't
Also the data of a data package is inserted in the working memory
independently, so that I have e.g. 10 data events instead of a single
package event.
(Now that you know that, my first sentence would be correctly: I want to
know if 20 counts of the max. last 150 counts have contained a specific
event.)
If my explanation (or my attempt to explain) is difficult to understand,
please ask me what you want to know.
I would be very happy about any ideas.
Thank you.
Tina
15 years, 11 months
