org.camunda.bpm.engine.variable.context

Interface VariableContext

All Known Implementing Classes:

CompositeVariableContext, EmptyVariableContext, SingleVariableContext, VariableMapImpl, VariableScopeContext

public interface VariableContext

A context for variables. Allows resolving variables. An API may choose to accept a VariableContext instead of a map of concrete values in situations where passing all available variables would be expensive and lazy-loading is a desirable optimization.

Author:

Daniel Meyer

Method Summary

Modifier and Type	Method and Description
boolean	containsVariable(String variableName) Checks whether a variable with the given name is resolve through this context.
Set<String>	keySet()
TypedValue	resolve(String variableName) Resolve a value in this context.

Method Detail

resolve

TypedValue resolve(String variableName)

Resolve a value in this context.

Parameters:

variableName - the name of the variable to resolve.

Returns:

the value of the variable or null in case the variable does not exist.

containsVariable

boolean containsVariable(String variableName)

Checks whether a variable with the given name is resolve through this context.

Parameters:

variableName - the name of the variable to check

Returns:

true if the variable is resolve.

keySet

Set<String> keySet()

Returns:

a set of all variable names resolvable through this Context.