[jboss-jira] [JBoss JIRA] Closed: (JBPM-964) NullPointerException in ContextInstance.setVariable(java.lang.String name, java.lang.Object value) method.

[Tom Baeyens (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBPM-964?page=all ]

Tom Baeyens closed JBPM-964.
----------------------------

    Fix Version/s:  jBPM jPDL 3.2.1
       Resolution: Done

fixed

> 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
>             Fix For:  jBPM jPDL 3.2.1
>
>
> 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)
> 	...

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