[rules-users] knowledge agent unable to update rule/flow upon changes
Hi all,
I follow the last reply in
"http://drools.46999.n3.nabble.com/KnowledgeAgent-not-reloading-KnowledgeBase-td121401.html";
and use the static method in following class to obtain knowledge base:
public class DroolsCore {
private static KnowledgeAgent kagent = null;
private static KnowledgeBase knowledgeBase = null;
public static KnowledgeBase createKnowledgeBase() {
if(kagent == null && knowledgeBase == null) {
ResourceChangeScannerConfiguration sconf =
ResourceFactory.getResourceChangeScannerService().newResourceChangeScannerConfiguration();
sconf.setProperty("drools.resource.scanner.interval",
"10");
ResourceFactory.getResourceChangeScannerService().configure(sconf);
ResourceFactory.getResourceChangeScannerService().start();
ResourceFactory.getResourceChangeNotifierService().start();
kagent = KnowledgeAgentFactory.newKnowledgeAgent("myagent");
kagent.applyChangeSet(ResourceFactory.newClassPathResource("resource/changeSet.xml"));
knowledgeBase = kagent.getKnowledgeBase();
}
return knowledgeBase;
}
}
I have the my changeSet.xml as follows:
After deploying the application as webapp, I can run the flow + rule all
right.
However, when I switch the execution order in my flow file on the fly and
run the app again (by cliking a link), I get the same result as the flow has
never been changed.
Moreover, I get the following error message when I uninstall the webapp from
my application server (WASCE/geronimo 2.1):
Exception in thread "Thread-44" java.lang.RuntimeException: This Resource
cannot
be listed, or is not a directory
at
org.drools.io.impl.ClassPathResource.listResources(ClassPathResource.
java:191)
at
org.drools.io.impl.ResourceChangeScannerImpl.scan(ResourceChangeScann
erImpl.java:130)
at
org.drools.io.impl.ResourceChangeScannerImpl$ProcessChangeSet.run(Res
ourceChangeScannerImpl.java:311)
at java.lang.Thread.run(Thread.java:735)
Any help is appreciated.
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Re: [rules-users] Alternative to instanceof when matching against multiple concrete types under the same hiearchy?
if you write when $type : Interface() then $type will pick up both your ConcreteType1 and ConcreteType2 -- View this message in context: http://drools.46999.n3.nabble.com/Alternative-to-instanceof-when-matching-against-multiple-concrete-types-under-the-same-hiearchy-tp3314751p3318562.html Sent from the Drools: User forum 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] Unable to get WebDav Access, unless modify JackRabbit Config
Relates to webdav management of rules under: guvnor-5.2.0.Final-tomcat-6.0 Hi For rapid development, I wish to directly manage the repository through WebDav. I can successfully navigate the repository using BitKinex 3.2.3 or Windows 7 web folders. However, I cannot create or edit .drl files. When I do this I receive an ERROR in the Tomcat console (see error below this post). I have tried to authenticate with: -no authentication details - with the 'guest' user - the 'anonymous' user - and the 'admin' user. I have managed to enable WebDav editing of the repository .drl file's by updating the JackRabbit configuration of the Tomcat server and changing the anonymous user to have an id of 'guest' (in Tomcat's repository.xml file - see below). *However*, when I do this Drools Guvnor can no longer edit or view Rules. Any help much appreciated! ERROR received on edit: * at java.lang.Thread.run(Thread.java:662) ERROR 07-09 18:41:29,280 (WebDavServletBean.java:service:154)Exception: org. drools.repository.RulesRepositoryException: javax.jcr.AccessDeniedException: Acc ess denied at org.drools.repository.VersionableItem.checkout(VersionableItem.java:5 61) at org.drools.repository.VersionableItem.checkout(VersionableItem.java:5 31) at org.drools.repository.AssetItem.updateBinaryContentAttachment(AssetIt em.java:405) at org.drools.guvnor.server.files.WebDAVImpl.setResourceContent(WebDAVIm pl.java:712) at net.sf.webdav.methods.DoPut.execute(DoPut.java:152) at net.sf.webdav.WebDavServletBean.service(WebDavServletBean.java:128) at org.drools.guvnor.server.files.WebdavServlet.service(WebdavServlet.ja va:76) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl icationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF ilterChain.java:206) at org.jboss.seam.web.ContextFilter$1.process(ContextFilter.java:42) at org.jboss.seam.servlet.ContextualHttpServletRequest.run(ContextualHtt pServletRequest.java:53) at org.jboss.seam.web.ContextFilter.doFilter(ContextFilter.java:37) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl icationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF ilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV alve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV alve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j ava:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j JackRabbit configuration with guest user: *** -- -- View this message in context: http://drools.46999.n3.nabble.com/Unable-to-get-WebDav-Access-unless-modify-JackRabbit-Config-tp3317488p3317488.html Sent from the Drools: User forum 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] Function and return value
I have made a function in drl file. This function is calling another function
from java file. This java file function returns an object, that I am not
able to get.
function SomeObject testFinction(SomeObject obj1) {
String str;
// Some calculations
// ...
str = "something after calculation";
// this function will return SomeObject based on str value
SomeObject obj2 = Util.getSomeObject(str); // problem is here. obj2 is
updated with same value of obj1. Expected value is diffrent from obj1.
Checked getSomeObject(). It is working fine.
// Some other calculations...
// ...
return anotherSomeObject;
}
rule "Check SomeObject"
when
//eval(tlvID == "57")
someObj:SomeObject(id == "123")
then
testFinction(someObj);
end
I am using drool version 5.1.0.
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Re: [rules-users] Override JPAWorkItemManager
Hi
Thanks for your reply. I am trying to replace the JPAWorkItemFactory so I can
do some custom work. There is supposed to be some API that you can use but I
can't find this.
Cheers
Amin
Sent from my iPhone
On 7 Sep 2011, at 14:56, Alexander Egger wrote:
> Hi,
>
> I am working on the same problem currently. You can use your own
> PersistenceContext using the following code.
>
> TransactionManager transactionManager =
>new TransactionManagerFIVE();
>Environment env = KnowledgeBaseFactory.newEnvironment();
>env.set(EnvironmentName.TRANSACTION_MANAGER, transactionManager);
>env.set(EnvironmentName.PERSISTENCE_CONTEXT_MANAGER,
>new ProcessPersistenceContextManagerFIVE());
>return env;
>
> Having my own PersistenceContext is enough for me as you have access
> to all persistence methods and I am implementing my own persistence
> layer from there.
>
> This is not exactly an answer to your question but maybe it helps.
>
> Alexander
>
> 2011/9/7 Amin Mohammed-Coleman :
>> Hi
>> Thought it would make sense to show some code:
>> Properties prop = new Properties();
>> ...
>> prop.put("drools.workItemManagerFactory",
>> CustomJPAWorkItemManagerFactory.class.getName());
>> KnowledgeSessionConfiguration config = KnowledgeBaseFa
>> ctory.newKnowledgeSessionConfiguration(prop);
>> JPAKnowledgeService.newStatefulKnowledgeSession(..,config,..);
>>
>> The default JPAWorkItemManager factory is picked up every time. This is due
>> to the session configuration containing 2 factories and the default is being
>> pickedup.
>> Any help would be appreciated.
>> Cheers
>>
>> Sent from my iPhone
>> On 7 Sep 2011, at 04:58, Mauricio Salatino wrote:
>>
>> are you sure that the property is being set in the right place? I always
>> have troubles doing that. Did you try setting it up using the APIs? Just to
>> see if your work item works?
>> Cheers
>>
>> 2011/9/6 Amin Mohammed-Coleman
>>>
>>> Hi
>>>
>>>
>>>
>>> I am trying to set a custom jpa work item manager and setting it on the
>>> properties object before i create a knowledgesessionconfiguration with
>>> property "drools.workItemManagerFactory" but it seems as though the default
>>> JPAWorkItemManager is used every time. Is there a way to override this?
>>>
>>>
>>>
>>> Cheers
>>> ___
>>> rules-users mailing list
>>> rules-users@lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>
>>
>>
>>
>> --
>> - CTO @ http://www.plugtree.com
>> - MyJourney @ http://salaboy.wordpress.com
>> - Co-Founder @ http://www.jugargentina.org
>> - Co-Founder @ 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
>>
>> ___
>> rules-users mailing list
>> rules-users@lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>
> ___
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Re: [rules-users] Override JPAWorkItemManager
Hi,
I am working on the same problem currently. You can use your own
PersistenceContext using the following code.
TransactionManager transactionManager =
new TransactionManagerFIVE();
Environment env = KnowledgeBaseFactory.newEnvironment();
env.set(EnvironmentName.TRANSACTION_MANAGER, transactionManager);
env.set(EnvironmentName.PERSISTENCE_CONTEXT_MANAGER,
new ProcessPersistenceContextManagerFIVE());
return env;
Having my own PersistenceContext is enough for me as you have access
to all persistence methods and I am implementing my own persistence
layer from there.
This is not exactly an answer to your question but maybe it helps.
Alexander
2011/9/7 Amin Mohammed-Coleman :
> Hi
> Thought it would make sense to show some code:
> Properties prop = new Properties();
> ...
> prop.put("drools.workItemManagerFactory",
> CustomJPAWorkItemManagerFactory.class.getName());
> KnowledgeSessionConfiguration config = KnowledgeBaseFa
> ctory.newKnowledgeSessionConfiguration(prop);
> JPAKnowledgeService.newStatefulKnowledgeSession(..,config,..);
>
> The default JPAWorkItemManager factory is picked up every time. This is due
> to the session configuration containing 2 factories and the default is being
> pickedup.
> Any help would be appreciated.
> Cheers
>
> Sent from my iPhone
> On 7 Sep 2011, at 04:58, Mauricio Salatino wrote:
>
> are you sure that the property is being set in the right place? I always
> have troubles doing that. Did you try setting it up using the APIs? Just to
> see if your work item works?
> Cheers
>
> 2011/9/6 Amin Mohammed-Coleman
>>
>> Hi
>>
>>
>>
>> I am trying to set a custom jpa work item manager and setting it on the
>> properties object before i create a knowledgesessionconfiguration with
>> property "drools.workItemManagerFactory" but it seems as though the default
>> JPAWorkItemManager is used every time. Is there a way to override this?
>>
>>
>>
>> Cheers
>> ___
>> rules-users mailing list
>> rules-users@lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>
>
>
> --
> - CTO @ http://www.plugtree.com
> - MyJourney @ http://salaboy.wordpress.com
> - Co-Founder @ http://www.jugargentina.org
> - Co-Founder @ 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
>
> ___
> rules-users mailing list
> rules-users@lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
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Re: [rules-users] Decision table empty action cell
Thanks for your answer. Merging the cells is a good idea! Bruno. Le 07/09/2011 14:09, Swindells, Thomas a écrit : There's no easy option. One solution is to merge the cell across from your condition column -- if someone duplicates a row they'll still have the value merged and it looks nicer than having a column of N/A The other approach I tend to use is just to set the column heading to be "must be N/A" rather than retract the person. Thomas ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Decision table empty action cell
There's no easy option. One solution is to merge the cell across from your condition column - if someone duplicates a row they'll still have the value merged and it looks nicer than having a column of N/A The other approach I tend to use is just to set the column heading to be "must be N/A" rather than retract the person. Thomas From: rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org] On Behalf Of Bruno Freudensprung Sent: 07 September 2011 12:19 To: Rules Users List Subject: [rules-users] Decision table empty action cell Hi, I am implementing a decision table that looks like: CONDITION ACTION $p : Person name == "$1" retract($p); Person name Retract the person Fred N/A Kenny N/A The problem is generated rules have an empty RHS unless I put a string (here N/A) on each line of the Action column, and I'd like to hide this column in my final spreadsheet. Does anyone know a way to instruct Drools to generate the LHS even if the cell is empty? If it is not possible, do you know any Excel trick to automatically fill the Action cell with an arbitrary value (here N/A) when a new line is inserted in my table? Many thanks in advance for your help, Best regards, Bruno. ** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmas...@nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603 8808 40-00 ** ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] "From" in decision table
Hi guys, As you have probably noticed, today is my "decision tables day" :-). Before telling you what is going wrong, let me show you what kind of rule I try to put in my Drools 5.1 decision table: # for each window $window : Window($elements : elements) from $windows # for each manual annotation $an1 : ManualAnnotation( this inside $window && text == *"ToMatch"*) # if there is another manual annotation exists ManualAnnotation( this inside $window && text == *"ToMatch2"*) The only things I would like to parametrize are strings in bold. My decision table looks like this: CONDITION CONDITION CONDITION CONDITION CONDITION $an1 : ManualAnnotation exists ManualAnnotation $window : Window($elements... this inside $window text == "$1" this inside $window text == "$1" for each window annotation inside window Textannotation inside windowText N/A N/A ToMatch N/A ToMatch2 N/A N/A ToMatch3N/A ToMatch4 Here are the problems (in bold) with the generated rule: $an1 : ManualAnnotation( *this inside $window == "N/A"* && text == *"*ToMatch*"*) exists ManualAnnotation( *this inside $window == "N/A"* && text == *"*ToMatch2*"*) *$window : Window($elements : elements) from $windows* * The order of the LHS "fact lines" of the generated rules is the not same as the order of appearance in the spreadsheet * The "this inside $window" is considered as a field name Do you know if I can solve those problems? I have tried to find a way to tell the decision table to extend another rule but I haven't found a keyword for that in the documentation. Maybe do I have to use rule templates? Many thanks, Best regards, Bruno. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Decision table empty action cell
Hi, I am implementing a decision table that looks like: *CONDITION* *ACTION* *$p : Person* *name == "$1"* *retract($p);* *Person name* *Retract the person* Fred N/A Kenny N/A The problem is generated rules have an empty RHS unless I put a string (here N/A) on each line of the Action column, and I'd like to hide this column in my final spreadsheet. Does anyone know a way to instruct Drools to generate the LHS even if the cell is empty? If it is not possible, do you know any Excel trick to automatically fill the Action cell with an arbitrary value (here N/A) when a new line is inserted in my table? Many thanks in advance for your help, Best regards, Bruno. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Classloading error with AspectJ and Drools 5.2.0.Final
FYI - https://issues.jboss.org/browse/JBRULES-3122 was raised for this. cheers Steve 2011/8/31 Wolfgang Laun > This should be fixed by now on the way to 5.3.0, returning an empty > collection - I've seen a confirming email from Mark Proctor. > -W > > > On 30 August 2011 13:27, Sammi wrote: > >> We got exactly the same issue, but I think it could just return empty >> enumeration rather than null? >> >> Cited from the javadoc *Enumberation getResources(String name)* >> /An enumeration of URL objects for the resource. If no resources could be >> found, the enumeration will be empty. Resources that the class loader >> doesn't have access to will not be in the enumeration./ >> >> stevearoonie wrote: >> > >> > Clarification to this - it does also happen when we run our server. So >> > this >> > is preventing us from upgrading to 5.2 >> > >> > My guess is that getResources should return getParent().getResources() >> > rather than null. >> > >> > regards >> > Steve >> > >> > >> >> >> -- >> View this message in context: >> http://drools.46999.n3.nabble.com/rules-users-Classloading-error-with-AspectJ-and-Drools-5-2-0-Final-tp3143394p3295236.html >> Sent from the Drools: User forum 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 > > ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Override JPAWorkItemManager
Hi
Thought it would make sense to show some code:
Properties prop = new Properties();
...
prop.put("drools.workItemManagerFactory",
CustomJPAWorkItemManagerFactory.class.getName());
KnowledgeSessionConfiguration config = KnowledgeBaseFa
ctory.newKnowledgeSessionConfiguration(prop);
JPAKnowledgeService.newStatefulKnowledgeSession(..,config,..);
The default JPAWorkItemManager factory is picked up every time. This is due to
the session configuration containing 2 factories and the default is being
pickedup.
Any help would be appreciated.
Cheers
Sent from my iPhone
On 7 Sep 2011, at 04:58, Mauricio Salatino wrote:
> are you sure that the property is being set in the right place? I always have
> troubles doing that. Did you try setting it up using the APIs? Just to see if
> your work item works?
> Cheers
>
> 2011/9/6 Amin Mohammed-Coleman
> Hi
>
> I am trying to set a custom jpa work item manager and setting it on the
> properties object before i create a knowledgesessionconfiguration with
> property "drools.workItemManagerFactory" but it seems as though the default
> JPAWorkItemManager is used every time. Is there a way to override this?
>
>
> Cheers
>
> ___
> rules-users mailing list
> rules-users@lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
>
>
> --
> - CTO @ http://www.plugtree.com
> - MyJourney @ http://salaboy.wordpress.com
> - Co-Founder @ http://www.jugargentina.org
> - Co-Founder @ 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
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Re: [rules-users] [rules-dev] Building a (semantic) application
This list is dedicated to the communication between Drools developers. For general questions about Drools and rules, please use the "Rules Users List" , which has a much wider audience. -W On 7 September 2011 03:56, Sebastian Samaruga wrote: > Question, > > ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
