Package com.espertech.esper.common.internal.epl.variable.core

Interface Summary

Interface	Description
VariableChangeCallback	A callback interface for indicating a change in variable value.
VariableCollector
VariableManagementService	Variables service for reading and writing variables, and for setting a version number for the current thread to consider variables for.
VariableStateNonConstHandler	Interface for a plug-in to VariableManagementService to handle variable persistent state.

Class Summary

Class	Description
CurrentValue<T>	A holder for versioned values that holds a current version-value and a prior version-value pair.
Variable
VariableCollectorImpl
VariableDeployment
VariableDeployTimeResolver
VariableManagementServiceImpl	Variables service for reading and writing variables, and for setting a version number for the current thread to consider variables for.
VariableReader	Reads and writes variable values.
VariableReadWritePackage	A convenience class for dealing with reading and updating multiple variable values.
VariableReadWritePackageForge	A convenience class for dealing with reading and updating multiple variable values.
VariableRepositoryPreconfigured
VariableTriggerSetDesc
VariableTriggerWriteDesc
VariableTriggerWriteDescForge
VariableUtil
VariableVersionThreadEntry	Thread-specific state in regards to variable versions.
VariableVersionThreadLocal	A wrapper for a thread-local to hold the current version for variables visible for a thread, as well as uncommitted values of variables for a thread.
VersionedValue<T>	Holds a version of a value and a timestamp when that version is taken.
VersionedValueList<T>	A self-cleaning list of versioned-values.

Exception Summary

Exception	Description
VariableDeclarationException	Exception indicating a problem in a variable declaration.
VariableExistsException	Exception indicating a a variable already exists.