NullPointerException in ContextInstance.setVariable(java.lang.String name, java.lang.Object value) method. ---------------------------------------------------------------------------------------------------------- Key: JBPM-964 URL: http://jira.jboss.com/jira/browse/JBPM-964 Project: JBoss jBPM Issue Type: Bug Components: Core Engine Affects Versions: jBPM jPDL 3.2 Environment: Windows XP SP2, jbpm-jpdl-3.2.GA Reporter: Vt Ysh Assigned To: Tom Baeyens Priority: Trivial NullPointerException occurs when trying to set variable value of byte[] type in ContextInstance. Error happens only in one case, then value is not null and has zero length Here is a junit TestCase which represents an error import junit.framework.TestCase; import org.jbpm.context.exe.ContextInstance; import org.jbpm.graph.def.ProcessDefinition; import org.jbpm.graph.exe.ProcessInstance; public class ContextTest extends TestCase { public void testContext() { ProcessDefinition processDefinition = ProcessDefinition.parseXmlString( "<process-definition>" + " <start-state>" + " <transition to='s' />" + " </start-state>" + " <state name='s'>" + " <transition to='end' />" + " </state>" + " <end-state name='end' />" + "</process-definition>" ); ProcessInstance processInstance = new ProcessInstance(processDefinition); ContextInstance contextInstance = processInstance.getContextInstance(); try { contextInstance.setVariable("test", new byte[0]); fail("Should raise NullPointer exception"); }catch(NullPointerException e) { e.printStackTrace(); } processInstance.signal(); } } Console output: java.lang.NullPointerException at java.util.ArrayList.<init>(ArrayList.java:133) at org.jbpm.bytes.ByteArray.<init>(ByteArray.java:60) at org.jbpm.context.log.variableinstance.ByteArrayUpdateLog.<init>(ByteArrayUpdateLog.java:41) at org.jbpm.context.exe.variableinstance.ByteArrayInstance.setObject(ByteArrayInstance.java:44) at org.jbpm.context.exe.VariableInstance.setValue(VariableInstance.java:137) at org.jbpm.context.exe.VariableInstance.create(VariableInstance.java:74) at org.jbpm.context.exe.VariableContainer.setVariableLocally(VariableContainer.java:157) at org.jbpm.context.exe.VariableContainer.setVariable(VariableContainer.java:45) at org.jbpm.context.exe.ContextInstance.setVariable(ContextInstance.java:166) at org.jbpm.context.exe.ContextInstance.setVariable(ContextInstance.java:156) ... -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira