[rules-users] Dynamic Loading of Rules from BRMS

Mahalakshmi mr2809 at nyu.edu
Sun Jun 27 18:14:28 EDT 2010 

Hi,

Thanks for the quick response.

Can I just point the URL to my package in the jboss-brms which I need to
access instead of specifying each rule?

And if I end up adding a new rule at runtime without modifying an existing
rule it should also be detected right?

thank you.
Jill


2010/6/27 Esteban Aliverti <esteban.aliverti at gmail.com>

> Hi,
> When you execute:
> kagent.applyChangeSet( ResourceFactory.newUrlResource("
> http://localhost:8280/jboss-brms/org.drools.guvnor.Guvnor/Guvnor.html"));
>
> you need to point to your change-set.xml file and not to guvnor.
>
> Inside you change-set you need to point to each resource you want the agent
> take care of. In your example the first two resources have the same URL. It
> doesn't look right.
>
> Best,
>
> 2010/6/27 jillika iyer <jillika at gmail.com>
>
>> hi guys,
>>
>> I am trying to upload my rules from jboss-brms to my eclipse in order to
>> run it against the working memory.
>> The following is my code and change-set.xml file and I am getting the
>> following error stack ( which is a java error but just attaching it for
>> giving more info).
>>
>>
>> I have started the jboss-server and it is connected correctly.
>>
>> I am getting a java based error which says that it is unable to parse
>> change-set.xml and unable to connect to the server.
>>
>> I just want to know if I am not the right path for creating the required
>> change-set.xml file due to which I am getting the java connection error.
>>
>>
>> I have just specified the url path in my change-set file and the types of
>> files it should be looking out for.
>>
>> What else do I need to incorporate for it to connect to the server???
>>
>> Please help me. I am relatively new to Drools.
>>
>> Code in my Runner class:
>>
>> KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
>>         ResourceFactory.getResourceChangeScannerService().start();
>>         ResourceFactory.getResourceChangeNotifierService().start();
>>
>>         // creating a knowledge agent
>>         KnowledgeAgentConfiguration aconf =
>> KnowledgeAgentFactory.newKnowledgeAgentConfiguration();
>>
>>         KnowledgeAgent kagent = KnowledgeAgentFactory.newKnowledgeAgent(
>> "MyAgent", kbase,aconf );
>>         kagent.applyChangeSet( ResourceFactory.newUrlResource("
>> http://localhost:8280/jboss-brms/org.drools.guvnor.Guvnor/Guvnor.html"));
>>         StatefulKnowledgeSession ksession =
>> kagent.getKnowledgeBase().newStatefulKnowledgeSession();
>>
>>   //      StatelessSession workingMemory = ruleBase.newStatelessSession();
>>         ArrayList<Ip> ipList = new ArrayList<Ip>();
>>
>>         ksession.setGlobal("ipList", ipList);
>>         ksession.insert(al);
>>         ksession.fireAllRules();
>>         ksession.dispose();
>>
>>
>>
>> my change-set.xml file:
>>
>>  <change-set xmlns='http://drools.org/drools-5.0/change-set'
>>              xmlns:xs='http://www.w3.org/2001/XMLSchema-instance'
>>              xs:schemaLocation='
>> http://drools.org/drools-5.0/change-set.xsd' >
>>    <add>
>>    <!-- Add for specifying URLs-->
>>        <resource source='http://localhost:8280/jboss-brms' type='DRL' />
>>        <resource source='http://localhost:8280/jboss-brms' type='DSLR' />
>>        <resource source='http://localhost:8280/jboss-brmss/sample-dsl.dsl'
>> type='DSL' />";
>>        <resource source='http://localhost:8280/jboss-brms' type='BRL' />
>>    </add>
>>  </change-set>
>>
>>
>>
>>
>> error stack:
>>
>> java.lang.RuntimeException: Unable to parse ChangeSet
>>     at
>> org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:223)
>>     at
>> org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:109)
>>     at com.org.RuleRunner.runStatelessRules(RuleRunner.java:156)
>>     at com.org.RulesTest.main(RulesTest.java:38)
>> Caused by: java.net.SocketException: Network is unreachable: connect
>>     at java.net.PlainSocketImpl.socketConnect(Native Method)
>>     at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
>>     at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
>>     at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
>>     at java.net.Socket.connect(Socket.java:524)
>>     at java.net.Socket.connect(Socket.java:474)
>>     at sun.net.NetworkClient.doConnect(NetworkClient.java:157)
>>     at sun.net.www.http.HttpClient.openServer(HttpClient.java:388)
>>     at sun.net.www.http.HttpClient.openServer(HttpClient.java:523)
>>     at sun.net.www.http.HttpClient.<init>(HttpClient.java:231)
>>     at sun.net.www.http.HttpClient.New(HttpClient.java:304)
>>     at sun.net.www.http.HttpClient.New(HttpClient.java:321)
>>     at
>> sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:839)
>>     at
>> sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:791)
>>     at
>> sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:716)
>>     at
>> sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:960)
>>     at
>> com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:973)
>>     at
>> com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startEntity(XMLEntityManager.java:905)
>>     at
>> com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startDTDEntity(XMLEntityManager.java:872)
>>     at
>> com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl.setInputSource(XMLDTDScannerImpl.java:282)
>>     at
>> com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDispatcher.dispatch(XMLDocumentScannerImpl.java:1021)
>>     at
>> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:368)
>>     at
>> com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:834)
>>     at
>> com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)
>>     at
>> com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:148)
>>     at
>> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1242)
>>     at javax.xml.parsers.SAXParser.parse(SAXParser.java:375)
>>     at
>> org.drools.xml.ExtensibleXmlParser.read(ExtensibleXmlParser.java:255)
>>     at
>> org.drools.xml.ExtensibleXmlParser.read(ExtensibleXmlParser.java:170)
>>     at org.drools.xml.XmlChangeSetReader.read(XmlChangeSetReader.java:48)
>>     at
>> org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:221)
>>     ... 3 more
>>
>> Please help me.
>>
>> Thank you
>> Jill
>>
>>
>> _______________________________________________
>> rules-users mailing list
>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>
>
> --
> XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
>
> Esteban Aliverti
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/rules-users/attachments/20100627/0394e284/attachment.html

More information about the rules-users mailing list