org.springframework.webflow.executor.jsf
Class FlowVariableResolver

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

public class FlowVariableResolver
extends javax.faces.el.VariableResolver

Custom variable resolver that resolves to a thread-bound FlowExecution object for binding expressions prefixed with FLOW_SCOPE_VARIABLE. For instance "flowScope.myBean.myProperty".

Author:

Colin Sampaleanu

Field Summary

static java.lang.String

FLOW_SCOPE_VARIABLE Name of the exposed flow scope variable ("flowScope").

Constructor Summary

FlowVariableResolver(javax.faces.el.VariableResolver resolverDelegate)
Create a new FlowVariableResolver, using the given original VariableResolver.

Method Summary

protected javax.faces.el.VariableResolver	getResolverDelegate() Return the original VariableResolver that this resolver delegates to.
java.lang.Object	resolveVariable(javax.faces.context.FacesContext context, java.lang.String name) Check for the special "flow" variable first, then delegate to the original VariableResolver.

Methods inherited from class java.lang.Object

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

Field Detail

FLOW_SCOPE_VARIABLE

public static final java.lang.String FLOW_SCOPE_VARIABLE

Name of the exposed flow scope variable ("flowScope").

See Also:

Constant Field Values

Constructor Detail

FlowVariableResolver

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

Create a new FlowVariableResolver, using the given original VariableResolver.

A JSF implementation will automatically pass its original resolver into the constructor of a configured resolver, provided that there is a corresponding constructor argument.

Parameters:

resolverDelegate - the original VariableResolver

Method Detail

getResolverDelegate

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

Return the original VariableResolver that this resolver delegates to.

resolveVariable

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

Check for the special "flow" variable first, then delegate to the original VariableResolver.

Specified by:

resolveVariable in class javax.faces.el.VariableResolver

Throws:

javax.faces.el.EvaluationException