[jboss-dev-forums] [jBPM Development] - Creating process dynamically using Fluent API

Sanket Mohile [http://community.jboss.org/people/sanket.mohile] created the discussion "Creating process dynamically using Fluent API" To view the discussion, visit: http://community.jboss.org/message/640100#640100 -------------------------------------------------------------- Hi, I want to create a process dynamically using Fluent API. I tried this - RuleFlowProcessFactory factory = RuleFlowProcessFactory.createProcess("com.sample.process");    factory     // Header     .name("HelloWorldProcess")     .version("1.0")     .packageName("defaultPackage")     // Nodes     .startNode(1)      .name("Start")     .done()     .actionNode(2)      .name("Action")      .action("java", "System.out.println(\"Hello World\");")     .done().     endNode(3)      .name("End")     .done()     // Connections     .connection(1, 2)     .connection(2, 3); But when I start the process, I get an exception java.lang.RuntimeException: unable to execute Action at org.jbpm.workflow.instance.node.ActionNodeInstance.internalTrigger(ActionNodeInstance.java:49) at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:122) at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerConnection(NodeInstanceImpl.java:185) at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:150) at org.jbpm.workflow.instance.node.StartNodeInstance.triggerCompleted(StartNodeInstance.java:49) at org.jbpm.workflow.instance.node.StartNodeInstance.internalTrigger(StartNodeInstance.java:41) at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:122) at org.jbpm.ruleflow.instance.RuleFlowProcessInstance.internalStart(RuleFlowProcessInstance.java:35) at org.jbpm.process.instance.impl.ProcessInstanceImpl.start(ProcessInstanceImpl.java:188) at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.start(WorkflowProcessInstanceImpl.java:302) at org.jbpm.process.instance.ProcessRuntimeImpl.startProcessInstance(ProcessRuntimeImpl.java:154) at org.jbpm.process.instance.ProcessRuntimeImpl.startProcess(ProcessRuntimeImpl.java:124) at org.jbpm.process.instance.ProcessRuntimeImpl.startProcess(ProcessRuntimeImpl.java:116) at org.drools.common.AbstractWorkingMemory.startProcess(AbstractWorkingMemory.java:1090) at org.drools.impl.StatefulKnowledgeSessionImpl.startProcess(StatefulKnowledgeSessionImpl.java:301) at com.sample.Example1.main(Example1.java:57) Caused by: java.lang.NullPointerException at org.jbpm.workflow.instance.node.ActionNodeInstance.internalTrigger(ActionNodeInstance.java:47) ... 15 more If I remove the actionNode, the code runs successfully. Similarly in case of a human task node, when I use a .onEntryAction("java", "java.util.Map contentParam = new java.util.HashMap();"); it crashes. Seems some problem with the "java" dialect. Just not able to figure that out... Please help. Also would be glad if someone could provide a sample code for creating dynamic process with fluent API.. Thanks, Sanket. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/640100#640100] Start a new discussion in jBPM Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]