org.drools.event.process
Interface ProcessVariableChangedEvent

All Superinterfaces:

KnowledgeRuntimeEvent, ProcessEvent

public interface ProcessVariableChangedEvent
extends ProcessEvent

An event when a variable inside a process instance has been changed.

Method Summary

Object	getNewValue() The new value of the variable.
Object	getOldValue() The old value of the variable.
String	getVariableId() The unique id of the process variable (definition).
String	getVariableInstanceId() The unique id of the process variable instance (as multiple node instances with the same process variable definition exists).

Methods inherited from interface org.drools.event.process.ProcessEvent

getProcessInstance

Methods inherited from interface org.drools.event.KnowledgeRuntimeEvent

getKnowledgeRuntime

Method Detail

getVariableId

String getVariableId()

The unique id of the process variable (definition).

Returns:

the variable id

getVariableInstanceId

String getVariableInstanceId()

The unique id of the process variable instance (as multiple node instances with the same process variable definition exists). This is an aggregation of the unique id of the instance that contains the variable scope and the variable id.

Returns:

the variable instance id

getOldValue

Object getOldValue()

The old value of the variable. This may be null.

Returns:

the old value

getNewValue

Object getNewValue()

The new value of the variable. This may be null.

Returns:

the new value