Drools planner & Scala
by Adam Warski
Hello,
I'm using Planner in a Scala program and it almost works without problems; the only one is in implementing the Solution interface, as it uses raw (erased) version of Score, which is normally generic (Score<S extends Score>). Scala generally doesn't like raw types and in most cases it's impossible to extend/implement interfaces which use them. A work-around is to introduce an "adapter" in Java, which you can later extend in Scala:
public abstract class ScalaSolution implements Solution {
public Score getScore() { return getScoreScala(); }
public abstract Score<?> getScoreScala();
public void setScore(Score score) { setScoreScala(score); }
public abstract void setScoreScala(Score<?> score);
}
and then in Scala:
class Schedule(...) extends ScalaSolution {
var score: Score[_] = _
def setScoreScala(score: Score[_]) = { this.score = score }
def getScoreScala = score
...
}
So the fix is to replace the raw Score type with Score<?>. Maybe it would be possible to apply that in the code? I tried it locally and it compiles without problems.
And a side question: do you have any plans on implementing multithreading in planner? So that several moves could be explored concurrently? I saw there's an open Jira issue for some time, but it didn't have any timeframe information.
--
Adam Warski
http://www.warski.org
http://www.softwaremill.eu
14 years, 12 months
Re: [rules-users] How to modify changeset.xml in guvnor
by kenichiwa
Maybe this will clarify things....
For this code:
...
...
...
String urlString =
"http://localhost:9080/drools-guvnor/org.drools.guvnor.Guvnor/package/defa...";
URL url = new URL(urlString);
KnowledgeAgent kagent =
KnowledgeAgentFactory.newKnowledgeAgent("TestAgent");
UrlResource urlResource = (UrlResource)ResourceFactory.newUrlResource(url);
urlResource.setBasicAuthentication("enabled");
urlResource.setUsername("admin");
urlResource.setPassword("");
kagent.applyChangeSet(urlResource);
KnowledgeBase kbase = kagent.getKnowledgeBase();
...
...
...
I am getting this exception:
[12/3/10 15:54:58:059 MST] 0000001d SystemOut O [2010:12:337
15:12:59:debug] KnowledgeAgent building resource map
[12/3/10 15:54:58:059 MST] 0000001d SystemOut O [2010:12:337
15:12:59:info] KnowledgeAgent created, with configuration:
monitorChangeSetEvents=true scanResources=true scanDirectories=true
newInstance=true
[12/3/10 15:54:58:059 MST] 00000027 SystemOut O [2010:12:337
15:12:59:info] KnowledegAgent has started listening for ChangeSet
notifications
[12/3/10 15:54:58:090 MST] 0000001f SystemOut O INFO 03-12 15:54:58,074
(NilAuthenticator.java:authenticate:51) All users are guests.
[12/3/10 15:54:58:090 MST] 0000001f SystemOut O INFO 03-12 15:54:58,090
(RepositoryServlet.java:allowUser:129) admin authenticated for rest api
[12/3/10 15:54:58:090 MST] 0000001f SystemOut O INFO 03-12 15:54:58,090
(PackageDeploymentServlet.java:a:136) PackageName: defaultPackage
[12/3/10 15:54:58:090 MST] 0000001f SystemOut O INFO 03-12 15:54:58,090
(PackageDeploymentServlet.java:a:137) PackageVersion: LATEST
[12/3/10 15:54:58:090 MST] 0000001f SystemOut O INFO 03-12 15:54:58,090
(PackageDeploymentServlet.java:a:138) PackageIsLatest: true
[12/3/10 15:54:58:090 MST] 0000001f SystemOut O INFO 03-12 15:54:58,090
(PackageDeploymentServlet.java:a:139) PackageIsSource: false
[12/3/10 15:55:18:934 MST] 0000001d SystemOut O [2010:12:337
15:12:934:info] KnowledgeAgent applying ChangeSet
[12/3/10 15:55:18:934 MST] 0000001d SystemOut O [2010:12:337
15:12:934:debug] KnowledgeAgent notifier subscribing to
resource=[UrlResource
path='http://localhost:9080/drools-guvnor/org.drools.guvnor.Guvnor/package/defa...']
[12/3/10 15:55:18:934 MST] 0000001d SystemOut O [2010:12:337
15:12:934:debug] ResourceChangeNotification subscribing
listener=org.drools.agent.impl.KnowledgeAgentImpl@3cec3cec to
resource=[UrlResource
path='http://localhost:9080/drools-guvnor/org.drools.guvnor.Guvnor/package/defa...']
[12/3/10 15:55:18:949 MST] 0000001d SystemOut O [2010:12:337
15:12:949:debug] KnowledgeAgent rebuilding KnowledgeBase using ChangeSet
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O [2010:12:337
15:12:965:exception]
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O
java.lang.RuntimeException: KnowledgeAgent exception while trying to
deserialize KnowledgeDefinitionsPackage
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
org.drools.agent.impl.KnowledgeAgentImpl.createPackageFromResource(KnowledgeAgentImpl.java:664)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
org.drools.agent.impl.KnowledgeAgentImpl.addResourcesToKnowledgeBase(KnowledgeAgentImpl.java:889)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
org.drools.agent.impl.KnowledgeAgentImpl.rebuildResources(KnowledgeAgentImpl.java:704)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
org.drools.agent.impl.KnowledgeAgentImpl.buildKnowledgeBase(KnowledgeAgentImpl.java:584)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:185)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:168)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
com.mycompany.myapp.test.controllers.TestDroolsController.testDrools(TestDroolsController.java:41)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
java.lang.reflect.Method.invoke(Method.java:600)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
org.springframework.web.servlet.mvc.multiaction.MultiActionController.invokeNamedMethod(MultiActionController.java:471)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
org.springframework.web.servlet.mvc.multiaction.MultiActionController.handleRequestInternal(MultiActionController.java:408)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
javax.servlet.http.HttpServlet.service(HttpServlet.java:718)
[12/3/10 15:55:18:965 MST] 0000001d SystemOut O at
javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1661)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1595)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:131)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.ui.logout.LogoutFilter.doFilterHttp(LogoutFilter.java:89)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.ui.preauth.AbstractPreAuthenticatedProcessingFilter.doFilterHttp(AbstractPreAuthenticatedProcessingFilter.java:69)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:235)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:175)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:908)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:932)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:500)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:91)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:864)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:186)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:272)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1550)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O Caused by:
java.io.IOException: Server returned HTTP response code: 401 for URL:
http://localhost:9080/drools-guvnor/org.drools.guvnor.Guvnor/package/defa...
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1308)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.drools.io.impl.UrlResource.grabStream(UrlResource.java:210)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.drools.io.impl.UrlResource.getInputStream(UrlResource.java:146)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.drools.agent.impl.KnowledgeAgentImpl.createPackageFromResource(KnowledgeAgentImpl.java:652)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O ... 63 more
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O [2010:12:337
15:12:980:debug] KnowledgeAgent obtaining pkg resource=[UrlResource
path='http://localhost:9080/drools-guvnor/org.drools.guvnor.Guvnor/package/defa...']
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O [2010:12:337
15:12:980:exception]
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O
java.lang.RuntimeException: KnowledgeAgent exception while trying to
deserialize KnowledgeDefinitionsPackage
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.drools.agent.impl.KnowledgeAgentImpl.addResourcesToKnowledgeBase(KnowledgeAgentImpl.java:914)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.drools.agent.impl.KnowledgeAgentImpl.rebuildResources(KnowledgeAgentImpl.java:704)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.drools.agent.impl.KnowledgeAgentImpl.buildKnowledgeBase(KnowledgeAgentImpl.java:584)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:185)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:168)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.mycompany.myapp.test.controllers.TestDroolsController.testDrools(TestDroolsController.java:41)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
java.lang.reflect.Method.invoke(Method.java:600)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.web.servlet.mvc.multiaction.MultiActionController.invokeNamedMethod(MultiActionController.java:471)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.web.servlet.mvc.multiaction.MultiActionController.handleRequestInternal(MultiActionController.java:408)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
javax.servlet.http.HttpServlet.service(HttpServlet.java:718)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1661)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1595)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:131)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.ui.logout.LogoutFilter.doFilterHttp(LogoutFilter.java:89)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.ui.preauth.AbstractPreAuthenticatedProcessingFilter.doFilterHttp(AbstractPreAuthenticatedProcessingFilter.java:69)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:235)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:175)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:908)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:932)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:500)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:91)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:864)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:186)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:272)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1550)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O Caused by:
java.lang.NullPointerException
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O at
org.drools.agent.impl.KnowledgeAgentImpl.addResourcesToKnowledgeBase(KnowledgeAgentImpl.java:906)
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O ... 62 more
[12/3/10 15:55:18:980 MST] 0000001d SystemOut O [2010:12:337
15:12:980:info] KnowledgeAgent new KnowledgeBase now built and in use
[12/3/10 15:55:18:996 MST] 0000001d SystemOut O [2010:12:337
15:12:996:debug] KnowledgeAgent finished rebuilding KnowledgeBase using
ChangeSet
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15 years
Problem persisting human tasks
by raic
Hi,
I'm having problems using drools flow persistance with human tasks. I'm
using drools server.
On one hand, I have my test application, which starts a MinaTaskServer for
registering human tasks, and then, the application generates JSON commands
for executing a flow with human tasks on the execution server.
Without using flow persistence, this is working ok, i'm able to retrieve the
pending tasks and completing them without problems.
When I try to configure flow persistence on the execution server, i can
start the process, the tasks are registered ok and drools flow tables are
generated in my database (processinstanceinfo,sessioninfo,workiteminfo...)
with the correct flow information. The problem appears when i retrieve a
pending task, and then, i want to complete it. It seems that the
communication between MinaTaskServer and ExecutionServer is not ok.
The error i'm getting is the following:
[2010:11:327 18:11:661:debug] Message receieved on client :
EventTriggerResponse
[2010:11:327 18:11:661:debug] Arguments :
[org.drools.task.event.EventPayload@1b2df13]
Task completed 1
[2010:11:327 18:11:661:debug] Message receieved on client :
EventTriggerResponse
[2010:11:327 18:11:661:debug] Arguments :
[org.drools.task.event.EventPayload@1f7c6e1]
Task completed 1
[2010:11:327 18:11:770:debug] Message receieved on client : GetTaskResponse
[2010:11:327 18:11:770:debug] Arguments : [org.drools.task.Task@d17fbb51]
[2010:11:327 18:11:770:exception] Uncaught exception on client
java.lang.IllegalStateException: EntityManager is closed
at org.hibernate.ejb.EntityManagerImpl.getSession(EntityManagerImpl.java
:66)
at
org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:182)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at
org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:358)
at $Proxy132.find(Unknown Source)
at
org.drools.persistence.processinstance.JPAWorkItemManager.completeWorkItem(JPAWorkItemManager.java:88)
at
org.drools.process.workitem.wsht.WSHumanTaskHandler$GetCompletedTaskResponseHandler.execute(WSHumanTaskHandler.java:250)
at
org.drools.task.service.TaskClientHandler.messageReceived(TaskClientHandler.java:80)
at
org.drools.task.service.mina.MinaTaskClientHandler.messageReceived(MinaTaskClientHandler.java:47)
at
org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.messageReceived(DefaultIoFilterChain.java:713)
at
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
at
org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:46)
at
org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:793)
at
org.apache.mina.filter.codec.ProtocolCodecFilter$ProtocolDecoderOutputImpl.flush(ProtocolCodecFilter.java:375)
at
org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:229)
at
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
at
org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:46)
at
org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:793)
at
org.apache.mina.core.filterchain.IoFilterAdapter.messageReceived(IoFilterAdapter.java:119)
at
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
at
org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:426)
at
org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:638)
at
org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:598)
at
org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:587)
at
org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:61)
at
org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:969)
at
org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown
Source
)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
Source)
at java.lang.Thread.run(Unknown Source)
And here is my configuration:
knowledge-services.xml (spring configuration)
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:drools="http://drools.org/schema/drools-spring"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://drools.org/schema/drools-spring
http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-containe...">
<bean id="ds"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/drools_flow" />
<property name="username" value="user" />
<property name="password" value="pass" />
</bean>
<drools:connection id="connection1" type="local" />
<drools:execution-node id="node1" connection="connection1" />
<drools:kbase id="kbProcessWorkItems" node="node1">
<drools:resources>
<drools:resource type="CHANGE_SET"
source="classpath:changeset.xml"/>
</drools:resources>
</drools:kbase>
<bean id="myEmf"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="ds" />
<property name="persistenceUnitName"
value="org.drools.persistence.jpa.local" />
</bean>
<bean id="txManager"
class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="myEmf" />
</bean>
<drools:kstore id="kstore1" />
<drools:ksession id="ksession1" type="stateful" kbase="kbProcessWorkItems"
node="node1">
<drools:configuration>
<drools:jpa-persistence>
<drools:transaction-manager ref="txManager" />
<drools:entity-manager-factory ref="myEmf" />
<drools:variable-persisters>
<drools:persister for-class="javax.persistence.Entity"
implementation="org.drools.persistence.processinstance.persisters.JPAVariablePersister"/>
</drools:variable-persisters>
</drools:jpa-persistence>
</drools:configuration>
</drools:ksession>
</beans>
And here my persistence.xml:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:orm="http://java.sun.com/xml/ns/persistence/orm"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd
http://java.sun.com/xml/ns/persistence/orm
http://java.sun.com/xml/ns/persistence/orm_1_0.xsd">
<persistence-unit name="org.drools.persistence.jpa.local"
transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>org.drools.persistence.session.SessionInfo</class>
<class>org.drools.persistence.processinstance.ProcessInstanceInfo</class>
<class>org.drools.persistence.processinstance.WorkItemInfo</class>
<class>org.drools.persistence.processinstance.variabletypes.VariableInstanceInfo</class>
<class>org.drools.persistence.processinstance.variabletypes.JPAPersistedVariable</class>
<!-- my persistent variables -->
<class>com.sample.bussiness.model.ClientModel</class>
<properties>
<property name="hibernate.dialect"
value="org.hibernate.dialect.MySQL5Dialect"/>
<property name="hibernate.max_fetch_depth" value="3" />
<property name="hibernate.hbm2ddl.auto" value="create" />
<property name="hibernate.show_sql" value="false" />
</properties>
</persistence-unit>
</persistence>
I've seen some examples that uses bitronix but i'm not using it, i don't
know if that is the problem...
Some ideas?
Thanks
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15 years
How to specify relative URL in chagenset.xml file
by Pardeep Ruhil
Hi,
I am getting File Not Found Exception when I try to give relative path of the file.
<resource source='file:../HelloWorld.drl' type='DRL' />
But when I give the complete path, It picks the changeset.xml file.
<resource source='file:C:/Tomcat/webapps/DroolsCheck/HelloWorld.drl' type='DRL' />
Please tell me the syntax for using the relative path for my workflow or rule files.
Thanks & Regards
Pradeep Ruhil
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15 years
Unable to start drools-server 5.1.1 or 5.2.0.M1 under Tomcat 6.0.30
by A R
Hi,
I don't seem to be able to get the drools server (5.1.1 or 5.2.0.M1) to
startup correctly under Tomcat 6.0.30.
Here are the steps I've taken:
1) cp drools-5.1.1-server.war to my webapps directory
2) deleted servlet-api-2.3.jar due to a conflict with tomcat's
servrlet-api.jar
3) On startup however I get the following error in the logs (same error for
5.2.0.M1):
org.springframework.beans.factory.parsing.BeanDefinitionParsingException:
Configuration problem: Failed to import bean definitions from URL location
[classpath:knowledge-services.xml]
Offending resource: class path resource [beans.xml]; nested exception is
org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line
25 in XML document from class path resource [knowledge-services.xml] is
invalid; nested exception is org.xml.sax.SAXParseException:
cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration
can be found for element 'drools:execution-node'.
Where line 25 in the knowledge-services.xml file is:
<drools:execution-node id="node1" />
Full stack trace is here:
http://pastebin.com/Dweg29gJ
Any help appreciated.
Thanks!
15 years
taskService restart problem (urgent response needed)
by KiranP
i m having 2-3 tasks in my flow the flow works fine in the normal conditions
the tasks are handled by the MinaTaskServer and MinaTaskClient but the
problem is that it uses the command and the call back mechanism using the
map of tasks request (if i m not wrong) hence when the taskservice restarts
all the callback refrence is lost and completing any task wont updated to
the MinaTaskServer (even if the task is available)
can any one hint me who i can achieve trans-restart task completion.....
till today none of my posts got a reply..............i think u r all
busy............if some one gets time plz help....
bcoz now it has become a grave matter.........it urgent...
thanks
-----
Keep Working >>:working:
KiranP
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15 years
Drools and JBoss Seam proxies
by sherlock
Hi,
a newbie question.
I am asserting references to JBoss Seam beans (SFSB) as Drools facts and
it looks that the rule engine does not recognize them as instances of
the original bean POJO class - it looks that it sees the JBoss Seam proxies.
When I use an intermediate non-Seam enabled wrapper POJO class which
wraps the Seam bean everything works, but now there will be an
additional need to maintain set of wrapper classes and in addition DRL
conditions code is cluttered with statements to access the JBoss Seam
beans...
Surely I am missing something, but I cannot find out so far. Googling
didn't seem to find anything helpful.
The environment is: Seam 2.2.0.GA, Drools 5.1.1
Thank you in advance!
sherlock
15 years
Drools.NET active?
by Sean Su
Does anyone know if Drools.NET is something Drools team in JBoss works on?
Or it is maintained by other team which just named the product Drools.NET.
The website and document seem to me that the project is not active. Does
anyone know?
Thanks
Sean
--
"But beware of the Dark Side. Anger, fear, aggression - the Dark Side of the
Force are they." -Yoda
15 years
Large Decision Table Example Wanted
by Mark Proctor
We are looking for real world example decision tables that are 2K or
even 5K rows big or even 10K :)
This will allow us to demonstrate what really large decision tables look
like as well as allowing us to stress test our web based system and show
that it can handle problems of that size.
Anyone able to donate such an example, or can point to an existing one?
It is important that such a decision table comes with enough unit tests
to show that it contains a valid data set.
Mark
15 years
Question about in XML: literal-restriction on "null" value
by Christina Lau
Dear all,
My system is transforming internal data structure to drools rule language
XML file. For particular evaluation on a string field, how can I do so
happen the evaluating value is one of the keywords?
For example,
I need to check if
keyValue=="null"
In rule language in XML, through the XmlDumper,
<field-constraint field-name="keyValue">
<literal-restriction evaluator="==" value="null" />
However, this is the same for evaluation of
keyValue==null //check if keyValue is null or not
Would someone know how to tell the engine the different scenario in rule
language XML file,
evaluate on the content, and
nullable of the field?
Thanks a lot for your help
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15 years
