org.apache.shale.tiger.faces
Class VariableResolverImpl

java.lang.Object
  javax.faces.el.VariableResolver
      org.apache.shale.tiger.faces.VariableResolverImpl

public class VariableResolverImpl
extends javax.faces.el.VariableResolver

Implementation of VariableResolver that delegates to the original handler under these circumstances:

• There is bean already in existence with the specified name.
• There is no managed beans definition for the specified name.

If control is not delegated, implement the standard functionality for creating managed beans (this is necessary because JSF does not expose any direct API to access these capabilities), with the following additions:

• If the specified managed bean class includes the Bean annotation, the type and scope properties will have been preconfigured from the corresponding attribute values. (These default settings can be overridden by specifying an actual managed bean element in a faces-config.xml resource.)
• If a field of the specified bean class includes the Value annotation, the property initialization will be preconfigured to the literal or expression specified by the value attribute of the annotation. (These default settings can be overridden by specifiying an actual managed bean element, and including a property definition that sets the value.

FIXME - Incomplete implemetnation of standard managed beans functionality in the following areas:

• Partial support for list entries on managed beans and managed properties. It currently works for lists, but not for arrays.

IMPLEMENTATION NOTE - There is no faces-config.xml resource that registers this variable resolver, since we could end up with ordering issues with the standard Shale variable resolver. Therefore, the standard implementation will dynamically insert an instance of this resolver (below the standard instance, but above the implementation provided instance) in the standard decorator chain that is implemented as the JavaServer Faces runtime parses configuration resources.

Constructor Summary

VariableResolverImpl(javax.faces.el.VariableResolver original)
Create a new VariableResolverImpl wrapping the specified VariableResolver.

Method Summary

Object

resolveVariable(javax.faces.context.FacesContext context, String name) Resolve the specified variable name, creating and initializing a new managed bean if necessary.

Methods inherited from class java.lang.Object

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

Constructor Detail

VariableResolverImpl

public VariableResolverImpl(javax.faces.el.VariableResolver original)

Create a new VariableResolverImpl wrapping the specified VariableResolver.

Parameters:

original - Original VariableResolver to wrap

Method Detail

resolveVariable

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

Resolve the specified variable name, creating and initializing a new managed bean if necessary.

Specified by:

resolveVariable in class javax.faces.el.VariableResolver

Parameters:

context - FacesContext used to resolve variables

name - Name of the variable to be resolved

Throws:

javax.faces.el.EvaluationException - if an evaluation error occurs