[ https://issues.jboss.org/browse/DROOLS-1276?page=com.atlassian.jira.plugi... ] Geoffrey De Smet updated DROOLS-1276: ------------------------------------- Description: This works to get the default kieSession: {code} String ksessionName = null; // if ksessionName is null, then the default kieSession is used KieSessionModel kieSessionModel = kieContainer.getKieSessionModel(ksessionName); {code} But this doesn't work to get the default ksession: {code} String ksessionName = null; // Fails if ksessionName is null. Should return the default ksession instead. return kieContainer.newKieSession(ksessionName); {code} The above fails if ksessioName is null with this stacktrace: {code} java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:1011) at java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:1006) at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:692) at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:652) at org.optaplanner.core.impl.score.director.drools.DroolsScoreDirectorFactory.newKieSession(DroolsScoreDirectorFactory.java:129) {code} If no default ksession exists with argument null, a nice error message should be thrown. was: This works to get the default kieSession: {code} // if ksessionName is null, then the default kieSession is used KieSessionModel kieSessionModel = kieContainer.getKieSessionModel(ksessionName); {code} But this doesn't: {code} // Fails if ksessionName is null. Should return the default ksession instead. return kieContainer.newKieSession(ksessionName); {code} The above fails if ksessioName is null with this stacktrace: {code} java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:1011) at java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:1006) at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:692) at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:652) at org.optaplanner.core.impl.score.director.drools.DroolsScoreDirectorFactory.newKieSession(DroolsScoreDirectorFactory.java:129) {code} If no default ksession exists with argument null, a nice error message should be thrown. -- This message was sent by Atlassian JIRA (v6.4.11#64026)