org.springframework.webflow.action
Class EvaluateAction
java.lang.Object
org.springframework.webflow.action.AbstractAction
org.springframework.webflow.action.EvaluateAction
- All Implemented Interfaces:
- org.springframework.beans.factory.InitializingBean, Action
public class EvaluateAction
- extends AbstractAction
An action that evaluates an expression and optionally exposes its result.
Delegates to a ResultEventFactory
to determine how to map the evaluation result to an action outcome
Event
.
- Author:
- Keith Donald, Jeremy Grelle
- See Also:
Expression
,
ResultEventFactory
Method Summary |
protected Event |
doExecute(RequestContext context)
Template hook method subclasses should override to encapsulate their specific action execution logic. |
java.lang.String |
toString()
|
Methods inherited from class org.springframework.webflow.action.AbstractAction |
afterPropertiesSet, doPostExecute, doPreExecute, error, error, execute, getActionNameForLogging, getEventFactorySupport, initAction, no, result, result, result, result, success, success, yes |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
EvaluateAction
public EvaluateAction(Expression expression,
Expression resultExpression)
- Create a new evaluate action.
- Parameters:
expression
- the expression to evaluate (required)resultExpression
- the expression to evaluate the result (optional)
EvaluateAction
public EvaluateAction(Expression expression,
Expression resultExpression,
ResultEventFactory resultEventFactory)
- Create a new evaluate action.
- Parameters:
expression
- the expression to evaluate (required)resultExpression
- the strategy for how the expression result will be exposed to the flow (optional)resultEventFactory
- the factory that will map the evaluation result to a Web Flow event (optional)
doExecute
protected Event doExecute(RequestContext context)
throws java.lang.Exception
- Description copied from class:
AbstractAction
- Template hook method subclasses should override to encapsulate their specific action execution logic.
- Specified by:
doExecute
in class AbstractAction
- Parameters:
context
- the action execution context, for accessing and setting data in "flow scope" or "request scope"
- Returns:
- the action result event
- Throws:
java.lang.Exception
- an unrecoverable exception occured, either checked or unchecked
toString
public java.lang.String toString()
- Overrides:
toString
in class java.lang.Object