[rules-users] How to read XML using XMLPackageReader-Drools-compiler.5.2.1.final?
Hi, I am using Drools-compiler.5.2.1.final. I am trying to convert an drl to xml and vice versa using DrlParser, DrlDumper, XMLPackageReader and XML Dumper. Drl to XML conversion works fine but XML to Drl throws NPE. I have placed the XML file under a folder called sample. NPE is thrown at line 5.. Also attached is the exception. Please suggest. TIA. Reader source = new InputStreamReader( DroolsConversionHelper.class.getResourceAsStream(xmlFileName)); PackageBuilderConfiguration conf = new PackageBuilderConfiguration(); XmlPackageReader reader = new XmlPackageReader(conf.getSemanticModules()); DrlDumper dumper = new DrlDumper(); //line 5reader.read(source); PackageDescr descr = reader.getPackageDescr(); String test = dumper.dump(descr); System.out.println(test); java.lang.NullPointerException at org.drools.xml.ExtensibleXmlParser.resolveSchema(ExtensibleXmlParser.java:696) at org.drools.xml.ExtensibleXmlParser.resolveEntity(ExtensibleXmlParser.java:622) at com.sun.org.apache.xerces.internal.util.EntityResolverWrapper.resolveEntity(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.resolveEntity(Unknown Source) at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.resolveDocument(Unknown Source) at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.findSchemaGrammar(Unknown Source) at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(Unknown Source) Regards, Praveen. -- View this message in context: http://drools.46999.n3.nabble.com/How-to-read-XML-using-XMLPackageReader-Drools-compiler-5-2-1-final-tp3515778p3515778.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] How to use RepositorySessionUtil.getRepository()?
Hi All, I am using below piece of code from a standalone system to access the Rules repository. RulesRepository repository = RepositorySessionUtil.getRepository(); But we are getting RulesRepository Exception as below: org.drools.repository.RulesRepositoryException at org.drools.repository.RepositorySessionUtil.getRepository(RepositorySessionUtil.java:69) at TestSample.main(TestSample.java:45) Do we need to initialise something before using the above piece of code? Please suggest, TIA. Regards, Praveen. -- View this message in context: http://drools.46999.n3.nabble.com/How-to-use-RepositorySessionUtil-getRepository-tp3506714p3506714.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] Help needed - Repository not getting initialised?
Hi,
Repository is not getting initialised, throws NPE.
Please advise.
TIA.
public static Repository repository;
public static Session getSession() throws Exception {
return getSession(true);
}
public static synchronized Session getSession(boolean erase) {
try {
if (repository == null) {
if (erase) {
File repoDir = new File(repository);
System.out.println(DELETE test repo dir:
+ repoDir.getAbsolutePath());
RepositorySessionUtil.deleteDir(repoDir);
System.out.println(TEST repo dir deleted.);
}
JCRRepositoryConfigurator config = new
JackrabbitRepositoryConfigurator();
String home = System
.getProperty(guvnor.repository.dir);
repository = config.getJCRRepository(home);
Session testSession = repository
.login(new SimpleCredentials(alan_parsons,
password.toCharArray()));
RulesRepositoryAdministrator admin = new
RulesRepositoryAdministrator(
testSession);
if (erase admin.isRepositoryInitialized()) {
admin.clearRulesRepository();
}
config.setupRulesRepository(testSession);
return testSession;
} else {
return repository.login(new SimpleCredentials(
alan_parsons, password.toCharArray()));
}
} catch (RepositoryException e) {
throw new IllegalStateException(e);
}
}
public static void main(String [] args) throws Exception{
getSession();
}
Below is the exception..
DELETE test repo dir: D:\drools\TestRepository\repository
TEST repo dir deleted.
Exception in thread main java.lang.NullPointerException: dispatcher
at
org.apache.jackrabbit.core.observation.ObservationManagerImpl.init(ObservationManagerImpl.java:97)
at
org.apache.jackrabbit.core.WorkspaceImpl.getObservationManager(WorkspaceImpl.java:748)
at
org.apache.jackrabbit.core.SessionImpl.removeRegisteredEventListeners(SessionImpl.java:1193)
at org.apache.jackrabbit.core.SessionImpl.logout(SessionImpl.java:1222)
at
org.apache.jackrabbit.core.RepositoryImpl$WorkspaceInfo.doDispose(RepositoryImpl.java:2194)
at
org.apache.jackrabbit.core.RepositoryImpl$WorkspaceInfo.dispose(RepositoryImpl.java:2149)
at
org.apache.jackrabbit.core.RepositoryImpl.doShutdown(RepositoryImpl.java:1175)
at
org.apache.jackrabbit.core.RepositoryImpl.shutdown(RepositoryImpl.java:1127)
at
org.apache.jackrabbit.core.RepositoryImpl.initStartupWorkspaces(RepositoryImpl.java:544)
at
org.apache.jackrabbit.core.RepositoryImpl.init(RepositoryImpl.java:366)
at
org.apache.jackrabbit.core.RepositoryImpl.create(RepositoryImpl.java:673)
at
org.apache.jackrabbit.core.TransientRepository$2.getRepository(TransientRepository.java:231)
at
org.apache.jackrabbit.core.TransientRepository.startRepository(TransientRepository.java:279)
at
org.apache.jackrabbit.core.TransientRepository.login(TransientRepository.java:375)
at
org.apache.jackrabbit.commons.AbstractRepository.login(AbstractRepository.java:123)
at Hello.getSession(Hello.java:50)
at Hello.getSession(Hello.java:27)
at Hello.main(Hello.java:72)
Regards,
Praveen.
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[rules-users] NPE while creating Session using SimpleCredentials
Hi,
I am getting NPE at line 3, I doubt if SimpleCredentials is an issue over
here.
Please provide inputs if someone has faced the same.
try {
Repository repository = configurator.getJCRRepository(
repositoryHomeDirectory );
Credentials credentials = new SimpleCredentials(admin,
admin.toCharArray());
//line 3 Session session = repository.login(credentials,
production);
Node node = session.getRootNode();
System.out.println(root node path: + node.getPath());
} catch (Exception e) {
e.printStackTrace();
}
TIA.
Regards,
Praveen.
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[rules-users] RulesRepository usage - jar incompatibility issue
Hi,
I am trying to use RulesRepository to create a package and copy required
assets (by using their uuid) into the created package.
Below is the code snippet and the corresponding stack trace of the run-time
exception being thrown.
I would like to know the appropriate lucene-core jar to be used to get rid
of the below exception.
I have tried lucene-core 2.3, 2.4, 2.9 and 3.4 till now, none solved this.
static Repository repository;
/**
* @param args
* @throws RepositoryException
* @throws LoginException
*/
public static void main(String[] args) throws LoginException,
RepositoryException {
repository=getRepositoryHandle();
Session session=repository.login();
RulesRepository rulesRepository=new RulesRepository(session);
PackageItem
packageItem=rulesRepository.createPackage(newPackage,
newPackageDescription);
String
hello=rulesRepository.copyAsset(f51858e0-b9b2-44c7-863c-44e5680bb1b3,
newPackage, newPackage);
System.out.println(packageItem);
System.out.println(hello);
}
private static Repository getRepositoryHandle(){
if (repository == null)
repository = new
TransientRepository(classpath:repository.xml,praveen/repository);
return repository;
}
Exception in thread main java.lang.NoClassDefFoundError:
org/apache/lucene/search/SortComparatorSource
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at
org.apache.jackrabbit.core.config.BeanConfig.newInstance(BeanConfig.java:177)
at
org.apache.jackrabbit.core.config.RepositoryConfigurationParser$1.getQueryHandler(RepositoryConfigurationParser.java:631)
at
org.apache.jackrabbit.core.config.RepositoryConfig.getQueryHandler(RepositoryConfig.java:1032)
at
org.apache.jackrabbit.core.SearchManager.init(SearchManager.java:174)
at
org.apache.jackrabbit.core.RepositoryImpl.getSystemSearchManager(RepositoryImpl.java:630)
at
org.apache.jackrabbit.core.RepositoryImpl.access$100(RepositoryImpl.java:124)
at
org.apache.jackrabbit.core.RepositoryImpl$WorkspaceInfo.getSearchManager(RepositoryImpl.java:1860)
at
org.apache.jackrabbit.core.RepositoryImpl$WorkspaceInfo.doPostInitialize(RepositoryImpl.java:2095)
at
org.apache.jackrabbit.core.RepositoryImpl$WorkspaceInfo.initialize(RepositoryImpl.java:2000)
at
org.apache.jackrabbit.core.RepositoryImpl.initStartupWorkspaces(RepositoryImpl.java:533)
at
org.apache.jackrabbit.core.RepositoryImpl.init(RepositoryImpl.java:342)
at
org.apache.jackrabbit.core.RepositoryImpl.create(RepositoryImpl.java:605)
at
org.apache.jackrabbit.core.TransientRepository$2.getRepository(TransientRepository.java:232)
at
org.apache.jackrabbit.core.TransientRepository.startRepository(TransientRepository.java:280)
at
org.apache.jackrabbit.core.TransientRepository.login(TransientRepository.java:376)
at
org.apache.jackrabbit.commons.AbstractRepository.login(AbstractRepository.java:111)
at TestRepository.main(TestRepository.java:22)
Regards,
Praveen.
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[rules-users] Where in DB does Guvnor store description of rules?
Hi, Our application expects rule name and its description to be displayed in the UI and both of these are to be retrieved from DB. We are aware that Guvnor stores rules in DB, not sure of the description part. If someone could throw light on how to get description/comments (that was entered through Guvnor) in UI would be great. Initially we had the idea of parsing comments in drl. However we saw that the description entered through Guvnor while writing a rule does not show up in the generated source code. TIA. Regards, Praveen. -- View this message in context: http://drools.46999.n3.nabble.com/Where-in-DB-does-Guvnor-store-description-of-rules-tp3489816p3489816.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
Re: [rules-users] Where in DB does Guvnor store description of rules?
Thanks Mike and Patel. We also intend to provide the flexibility of choosing some rules and use them to build a drl/XML. Let me explain the scenario. The UI would be displaying all the rules, say 10. The app user may select any number of rules(random) as appropriate to his/her project, now we would like to pick only these selected rules from DB and pack it into a drl/XML. Any help in this regard would be great. TIA. Regards, Praveen. -- View this message in context: http://drools.46999.n3.nabble.com/Where-in-DB-does-Guvnor-store-description-of-rules-tp3489816p3492668.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] How to parse comments in drl file using DrlParser?
Hi, The system we are building requires rulenames and rule description(comments) to be displayed in the UI(built using JQuery). I am using DrlParser to convert the drl(generated using Guvnor) to XML so that it could be used to display in the UI. However, the comments written in drl are not visible in the converted XML. Please let me know how to parse comments using DrlParser so that I can use it to display as rule description. Thanks Regards, Praveen. -- View this message in context: http://drools.46999.n3.nabble.com/How-to-parse-comments-in-drl-file-using-DrlParser-tp3479895p3479895.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] How can Drools Planner consume Guvnor generated drl file?
Hi, We are trying to build a system where drools planner consumes drl from the Guvnor. The planner doesnot use Knowledgebase built on ChangeSet.xml which is a conventional way of using drl from Guvnor in Java apps. Please let us know the details of how we can achieve this . Also how can we get rid of the Config xml that we use in the planner. Thanks Regards, Praveen. -- View this message in context: http://drools.46999.n3.nabble.com/How-can-Drools-Planner-consume-Guvnor-generated-drl-file-tp3467722p3467722.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
Re: [rules-users] Accumulate and Collect issue - Guvnor 5.2 Final
Thanks Mike! It works. Regards, Praveen. 2011/10/28 Michael Anstis michael.ans...@gmail.com I assume you have not tried adding the import? Select the package, edit the package, add an import for java.util.List. On 28 October 2011 10:55, Michael Anstis michael.ans...@gmail.com wrote: -- Forwarded message -- From: praveen.sa...@gmail.com Date: 28 October 2011 10:48 Subject: Accumulate and Collect issue - Guvnor 5.2 Final Hi, We gave a try with 5.2 Final version, and see that all collect clauses appears in grey and are not editable (such conditions are also not deletable). Everything was OK with the M2 version (rules were edited with this version). It is quite strange because all the collect condition is greyed, just like a disabled field, and seems to be done by purpose. Is collect deprecated ? http://drools.46999.n3.nabble.com/rules-users-Guvnor-5-2-CR1-problem-with-collect-in-guided-editor-td3062287.html Above Forum link says to import what is required into the package definition. Could you please provide a detailed step-by-step procedure to get this accomplished. Our intention is to get all the Collection types in the Guvnor UI. Thanks Regards, Praveen. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- praveen kumar ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Help needed - how to get Number and intValue in Guvnor
Hello, Anyone out there who has come across the above issue? Regards, Praveen. -- View this message in context: http://drools.46999.n3.nabble.com/Help-needed-how-to-get-Number-and-intValue-in-Guvnor-tp3430730p3437459.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] Help needed - how to get Number and intValue in Guvnor
Hello, I am new to Drools and trying to write rules using Guvnor GUI. I have uploaded POJO's that are required for my rules. I am facing issue trying to get Number()(the one in Bold-Italics) and intValue in the Guvnor GUI. Below is the rule for reference, its taken from one of the examples provided in Drools Planner. // Accumulate hard constraints rule hardConstraintsBroken salience -1 // Do the other rules first (optional, for performance) when $hardTotal : */Number(/)* from accumulate( IntConstraintOccurrence(constraintType == ConstraintType.NEGATIVE_HARD, $weight : weight), sum($weight) // Vote for http://jira.jboss.com/jira/browse/JBRULES-1075 ) then scoreCalculator.setHardConstraintsBroken($hardTotal.intValue()); end -- View this message in context: http://drools.46999.n3.nabble.com/Help-needed-how-to-get-Number-and-intValue-in-Guvnor-tp3430730p3430730.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
