com.espertech.esper.epl.variable
Interfaces 
VariableChangeCallback
VariableService
VariableStateFactory
VariableStateHandler
Classes 
CreateVariableView
CurrentValue
OnSetVariableView
OnSetVariableViewFactory
VariableMetaData
VariableReader
VariableReadWritePackage
VariableServiceImpl
VariableServiceUtil
VariableStateFactoryConst
VariableVersionThreadEntry
VariableVersionThreadLocal
VersionedValue
VersionedValueList
Exceptions 
VariableDeclarationException
VariableExistsException
VariableNotFoundException
VariableTypeException