Fill dependent dropdown lists based on a web decision table
by peach_wyss
Hi
I'm using Drools and Guvnor in our project. We have the following Data Model
(simplified):
- Object C
-> has a List
-> has a List
I need to build an easy to edit web decision table in guvnor. We need the
table to fill a dropdown list (Object B) in dependency of another dropdown
list (Object A), when for example creating a new Object C on a form. The
table should look something like this:
[Object A] [Object B]
Test A1 Test B1
Test B2
Test B3
Test A2 Test B4
Test A3 Test B5
Test B6
Test A4 Test B7
Test B8
Test B9
Test B10
...so when a User creates a new Object C (Create-Form) and select on for
example "Test A3" in a dropdown list (Object A), Drools should be firing and
result "Test B5" and "Test B6", which then can be filled in the second
dropdown list (Object B).
How can I achieve such a scenario? We have already Drools Guvnor in use and
the requirement is, to have such a table to easy edit the dependencies of
this two dropdown lists.
Some thoughts:
- Is there a way to fill Objects in a List as a Action-Column in a web
decision table?
- Is there a way to add Objects to a List (global variable) in a web
decision table?
- Is there a way to achieve this with rule templates?
- Are there other ways to achieve this?
Thanks for your help.
Kind regards,
Peter
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11 years, 8 months
Tree iteration with accumulate: is it possible ?
by mcyrb
Hello.
I have a tree, with each leaf containing a random value.
The value of each node is the sum of its children value.
I would like to write a rule which looks like this:
when
nodeValue == 18 (e.g.)
then
// do something with this node
end
The accumulate conditional element looked adequate for this, so I wrote
something like this
when
n: Node()
accumulate( Leaf( parentNode == n, v : value ); nodeValue : sum( v );
nodeValue == 18 )
then
// do something with n
end
So... the problem is that this works only for nodes where its direct childs
are leafs, and not for upper nodes.
Have you got an idea to solve this ?
Thank you
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11 years, 9 months
Drools / Guvnor 6
by Stephen Masters
Hi folks,
Just wondering whether there's a download available yet for Guvnor v6, or whether I need to build from source.
As mentioned previously I'm tinkering with it on WebSphere, and so far (using WAS 8.5 Liberty Profile) I am experiencing zero issues. It just works! I'm using the Tomcat distribution of Guvnor 5.3. So I'm downloading 5.5 as we speak, and I might as well try out 6 while I'm at it. :)
Steve
11 years, 9 months
How to integrate Declarative Fact created using Guvnor in Java
by IPatel
Hi,
Basic questions on the facts that are created in Guvnor using New
Declaritive Model
I have the facts that are created in Guvnor which i dont have java classes
defined. I am refering to the tutorial provided on Chapter 5 The Fact Model
and in that it shows how to use the declarative facts from Java.
I am having hard time following the steps. So i am going to layout below to
see if my understanding is correct:
Step 1: // get a reference to a knowledge base with a declared type:
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
Step 2:// get the declared FactType
FactType personType = kbase.getFactType( "PackageName", "FactName" );
Step 3:// handle the type as necessary:
Not sure what this means
Step 4:// create instances:
Object bob = personType.newInstance();
Step5: // set attributes values
personType.set( bob,
"name",
"Bob" );
Step 6: // insert fact into a session
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
Step 7:ksession.insert( bob );
Step 8:ksession.fireAllRules();
I am able to understand Step 4 thru Step 8. I guess i am having trouble
understanding step 1 and Step 3.
Can someone please help me clarify or have example for me to refer.
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11 years, 9 months
planner: when gets a solution cloned?
by Michiel Vermandel
Hi,
I think a planning solution gets cloned in two different scenarios:
1) a better solution is found
2) the solver propagates from one solving phase to another.
Is this right?
If so, how do I know (inside the cloneSolution() method) if the clone is intended for a best-solution or a new working-solution?
Thanks
Michiel
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11 years, 9 months
Guvnor Configuration file
by IPatel
Hi all,
Somehow starting yesterday Guvnor won't start. I can see no exceptions in my
log file except that the last link it executes and gets stuck at is
following:
..."Brontes" started in 2853ms - Started 133 of 208 services <74 services
are passive or on-demand>
now i have a POC demo next week and i was wondering if guvnor has a way to
store somewhere the rules/packages i created and i can restore them. I
will install the tool again and import the rules/packages. This way I dont
have to re-create them again.
All your help will be greatly appreciated.
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11 years, 9 months
Guvnor JBoss 7 Authentication
by rjr201
Hi,
I'm having some problems getting user authentication working with Guvnor on
JBoss AS 7.
I have this in beans.xml:
<security:IdentityImpl>
<s:modifies/>
<security:authenticatorName>jaasAuthenticator</security:authenticatorName>
</security:IdentityImpl>
<security:jaas.JaasAuthenticator>
<s:modifies/>
<s:jaasConfigName>other</s:jaasConfigName>
</security:jaas.JaasAuthenticator>
<guvnorSecurity:RoleBasedPermissionResolver>
<s:modifies/>
<guvnorSecurity:enableRoleBasedAuthorization>true</guvnorSecurity:enableRoleBasedAuthorization>
</guvnorSecurity:RoleBasedPermissionResolver>
And I've created the following files on Guvnors class path:
roles.properties:
admin=admin
users.properties
admin=admin
This initially gave me a '401 This user has no permissions setup.' error. So
I followed this post:
http://drools.46999.n3.nabble.com/How-configure-Guvnor-5-4-JAAS-with-jbos...
And changed the /SecurityServiceImpl.java file as suggested (not sure if
this was the right thing to do or not, but it got rid of the error). However
now it gives me "incorrect username/password" regardless of what I enter.
Has anyone had any success with this, or can see where I'm going wrong? I
feel like I'm really close but can't work out this last step.
As always, thanks for any help anyone can give.
Rich.
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11 years, 9 months
