stellina_rosa [http://community.jboss.org/people/stellina_rosa] created the discussion
"Unable to create Field Extractor" To view the discussion, visit: http://community.jboss.org/message/606688#606688 -------------------------------------------------------------- h6. Hi! h6. I'm trying to create an example Drools file but when I run it I have this error message: h6. h6. h6. Unable to create Field Extractor for 'contenuto' of '[ClassObjectType class="java".lang.Object]' in rule 'prova' : [Rule name='prova'] java.lang.IllegalArgumentException: Could not parse knowledge. at org.drools.builder.impl.KnowledgeBuilderImpl.newKnowledgeBase(KnowledgeBuilderImpl.java:58) at com.sample.ProcessTest.readKnowledgeBase(ProcessTest.java:43) at com.sample.ProcessTest.main(ProcessTest.java:21) h6. this is my drools file (named Rule.drl): package com.googlecode.cursos.jbpm import org.drools.runtime.process.WorkflowProcessInstance; import org.sample.model.MyObject; rule "prova" ruleflow-group "regole" when $o: Object(contenuto == "rosa") then System.out.println("prima regola"); end h6. this is my ProcessTest.java class: public class ProcessTest { public static final void main(String[] args) { try { // load up the knowledge base KnowledgeBase kbase = readKnowledgeBase(); StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession(); KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test"); MyObject obj = new MyObject(); obj.setContenuto("rosa"); obj.setId(1); ksession.insert(obj); // start a new process instance ksession.startProcess("com.sample.bpmn.hello"); ksession.fireAllRules(); logger.close(); } catch (Throwable t) { t.printStackTrace(); } } private static KnowledgeBase readKnowledgeBase() throws Exception { KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); kbuilder.add(ResourceFactory.newClassPathResource("sample.bpmn"), ResourceType.BPMN2); kbuilder.add(ResourceFactory.newClassPathResource("Rule.drl"), ResourceType.DRL); return kbuilder.newKnowledgeBase(); } h6. and this is my MyObject.java class: package org.sample.model; public class MyObject { String contenuto; int id; public int getId() { return id;} public void setId(int id) { this.id = id; } public String getContenuto() { return contenuto; } public void setContenuto(String contenuto) { this.contenuto = contenuto;} } I can't understand where is the problem :( could anyone help me please? thank you! -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/606688#606688] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2034]
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