Package org.springframework.webflow.execution

Core, stable abstractions for representing runtime executions of flow definitions.

See:
Description

Interface Summary

Action	A command that executes a behavior and returns a logical execution result a calling flow execution can respond to.
FlowExecution	A top-level instance of a flow definition that carries out definition execution on behalf of a single client.
FlowExecutionContext	Provides contextual information about a flow execution.
FlowExecutionFactory	An abstract factory for creating flow exections.
FlowExecutionListener	Interface to be implemented by objects that wish to listen and respond to the lifecycle of flow executions.
FlowSession	A single, local instantiation of a flow definition launched within an overall flow execution.
RequestContext	A context for a single request to manipulate a flow execution.

Class Summary

Event	Signals the occurrence of something an active flow execution should respond to.
FlowExecutionListenerAdapter	An abstract adapter class for listeners (observers) of flow execution lifecycle events.
FlowSessionStatus	Type-safe enumeration of possible flow session statuses.
ScopeType	An enumeration of the core scope types of Spring Web Flow.
ViewSelection	Abstract base class for value objects that provide callers into a flow execution information about a logical response to issue and the data necessary to issue it.

Exception Summary

EnterStateVetoException	Exception thrown to veto the entering of a state of a flow.
FlowExecutionException	Base class for exceptions that occur within a flow while it is executing.

Package org.springframework.webflow.execution Description

Core, stable abstractions for representing runtime executions of flow definitions.

The central concept defined by this package is the FlowExecution interface, which represents a single instance of a top-level flow definition.

The following classes and interfaces are of particular interest:

• FlowExecutionFactory - An abstract factory for creating new flow executions.
• FlowExecutionRepository - A DAO for persisting and restoring existing flow executions.
• FlowExecutionListener - An observer interface to be implemented by objects that are interested in flow execution lifecycle events.

Package Usage example:

    // create flow execution
    FlowDefinition definition = ...
    FlowExecutionFactory factory = ...
    FlowExecution execution = factory.createFlowExecution(definition);
    
    // start execution
    ExternalContext context = ...
    ViewSelection response = execution.start(null, context);

This package depends on the definition package.