org.springframework.webflow.executor.jsf
Class FlowExecutionVariableResolver

java.lang.Object
  javax.faces.el.VariableResolver
      org.springframework.webflow.executor.jsf.FlowExecutionVariableResolver

public class FlowExecutionVariableResolver
extends javax.faces.el.VariableResolver

Custom variable resolver that resolves to a thread-bound FlowExecution object for binding expressions prefixed with a FLOW_EXECUTION_VARIABLE_NAME. For instance "flowExecution.conversationScope.myProperty". This class is designed to be used with a FlowExecutionPropertyResolver. This class is a more flexible alternative to the FlowVariableResolver which is expected to be used ONLY with a FlowPropertyResolver to resolve flow scope variables ONLY. It is more flexible because it provides access to any scope structure of a FlowExecution object.

Author:

Keith Donald

Field Summary

static java.lang.String

FLOW_EXECUTION_VARIABLE_NAME Name of the flow execution variable.

Constructor Summary

FlowExecutionVariableResolver(javax.faces.el.VariableResolver resolverDelegate)
Creates a new flow executon variable resolver that resolves the current FlowExecution object.

Method Summary

protected javax.faces.el.VariableResolver	getResolverDelegate() Returns the variable resolver this resolver delegates to if necessary.
java.lang.Object	resolveVariable(javax.faces.context.FacesContext context, java.lang.String name)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

FLOW_EXECUTION_VARIABLE_NAME

public static final java.lang.String FLOW_EXECUTION_VARIABLE_NAME

Name of the flow execution variable.

See Also:

Constant Field Values

Constructor Detail

FlowExecutionVariableResolver

public FlowExecutionVariableResolver(javax.faces.el.VariableResolver resolverDelegate)

Creates a new flow executon variable resolver that resolves the current FlowExecution object.

Parameters:

resolverDelegate - the resolver to delegate to when the variable is not named "flowExecution".

Method Detail

getResolverDelegate

protected final javax.faces.el.VariableResolver getResolverDelegate()

Returns the variable resolver this resolver delegates to if necessary.

resolveVariable

public java.lang.Object resolveVariable(javax.faces.context.FacesContext context,
                                        java.lang.String name)
                                 throws javax.faces.el.EvaluationException

Specified by:

resolveVariable in class javax.faces.el.VariableResolver

Throws:

javax.faces.el.EvaluationException