Re: [rules-users] Difference between Rule Base and Knowledge Base

We are upgrading Drools Core from 5.1.1 to 5.3.1 and stilling using the old RuleBase API, but we got Null Pointer Exception when running rules: ----------------- Caused by: [Error: wm.startProcess($phase.id): null] [Near : {... WorkingMemory wm = drools.getW ....}] ... Caused by: java.lang.NullPointerException at org.drools.common.AbstractWorkingMemory.startProcess(AbstractWorkingMemory.java:1073) ----------------- where our DRL file has content: ----------------- rule "Set ruleflow" salience 10 when $phase : Phase() then WorkingMemory wm = drools.getWorkingMemory(); wm.startProcess($phase.id); end ----------------- Do we have to switch to KnlowledgeBase API or sth wrong with our rule? ( it worked fine with 5.1.1) -- View this message in context: http://drools.46999.n3.nabble.com/Difference-between-Rule-Base-and-Knowle... Sent from the Drools: User forum mailing list archive at Nabble.com.