org.apache.shale.faces
Class ShalePropertyResolver

java.lang.Object
  javax.faces.el.PropertyResolver
      org.apache.shale.faces.ShalePropertyResolver

public class ShalePropertyResolver
extends javax.faces.el.PropertyResolver

Shale-specific PropertyResolver for evaluating JavaServer Faces value binding and method binding expressions. The following special processing is performed, based on recognizing the type of the base object:

• javax.naming.Context - Treats the property "name" as a String (or javax.naming.Name) suitable for passing to the lookup() method of the Context. The Context has no way to describe whether it is read only or not, so isReadOnly() returns false.
• org.apache.shale.util.LoadBundle - Special handling as follows, based on the requested property name:
  • map - Delegates to the original resolver's handling of the map property. This is for backwards compatibility with applications depending on this behavior from the 1.0.0 version of the class.
  • Any other property is considered to be a resource bundle key, which will be used to look up the corresponding value from the underlying resource bundle, using the Locale from the current view for selecting the appropriate translation.

All other evaluations are delegated to the previous implementation that was passed to our constructor.

$Id: ShalePropertyResolver.java 464373 2006-10-16 04:21:54Z rahul $

Constructor Summary

ShalePropertyResolver(javax.faces.el.PropertyResolver original)
Construct a new ShalePropertyResolver instance.

Method Summary

Class	getType(Object base, int index) Convert an index into a corresponding string, and delegate.
Class	getType(Object base, Object property) For a Context, look up and return the type of the named object corresponding to the specified property name from this Context.
Object	getValue(Object base, int index) Convert an index into a corresponding string, and delegate.
Object	getValue(Object base, Object property) For a base object of type Context, look up and return the named object corresponding to the specified property name from this Context.
boolean	isReadOnly(Object base, int index) Convert an index into a corresponding string, and delegate.
boolean	isReadOnly(Object base, Object property) For a Context base object, arbitrarily return false because we cannot determine if a Context is read only or not.
void	setValue(Object base, int index, Object value) Convert an index into a corresponding string, and delegate.
void	setValue(Object base, Object property, Object value) For a base object of type Context, replace any previous binding for the named object corresponding to the specified property name into this Context.

Methods inherited from class java.lang.Object

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

Constructor Detail

ShalePropertyResolver

public ShalePropertyResolver(javax.faces.el.PropertyResolver original)

Construct a new ShalePropertyResolver instance.

Parameters:

original - Original resolver to delegate to.

Method Detail

getValue

public Object getValue(Object base,
                       Object property)
                throws javax.faces.el.EvaluationException,
                       javax.faces.el.PropertyNotFoundException

For a base object of type Context, look up and return the named object corresponding to the specified property name from this Context.

(Since 1.0.1) For a base object of type LoadBundle, treat the property expression as follows:

• If the property name is map, call the corresponding property getter and return that value.
• Otherwise, treat the property name as a message key, and look up and return the corresponding value from the Map that is returned by the getMap() call.

Specified by:

getValue in class javax.faces.el.PropertyResolver

Parameters:

base - Base object from which to return a property

property - Property to be returned

Throws:

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

javax.faces.el.PropertyNotFoundException - if there is no such named object in this context

setValue

public void setValue(Object base,
                     Object property,
                     Object value)

For a base object of type Context, replace any previous binding for the named object corresponding to the specified property name into this Context.

(Since 1.0.1) For a base object of type LoadBundle, throw an exception since all properties of this object are read only.

Specified by:

setValue in class javax.faces.el.PropertyResolver

Parameters:

base - Base object in which to store a property

property - Property to be stored

value - Value to be stored

Throws:

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

javax.faces.el.PropertyNotFoundException - if there is no such named object in this context

isReadOnly

public boolean isReadOnly(Object base,
                          Object property)
                   throws javax.faces.el.EvaluationException,
                          javax.faces.el.PropertyNotFoundException

For a Context base object, arbitrarily return false because we cannot determine if a Context is read only or not.

(Since 1.0.1) For a LoadBundle base object, return true because all pseudo-properties of this bundle are considered to be read only.

Specified by:

isReadOnly in class javax.faces.el.PropertyResolver

Parameters:

base - Base object from which to return read only state

property - Property to be checked

Throws:

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

javax.faces.el.PropertyNotFoundException - if there is no such named object in this context

getType

public Class getType(Object base,
                     Object property)
              throws javax.faces.el.EvaluationException,
                     javax.faces.el.PropertyNotFoundException

For a Context, look up and return the type of the named object corresponding to the specified property name from this Context.

(Since 1.0.1) For a LoadBundle, look up and return the corresponding object type at runtime, or return Object for the type to be looked up at design time.

Specified by:

getType in class javax.faces.el.PropertyResolver

Parameters:

base - Base object from which to return a property type

property - Property whose type is to be returned

Throws:

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

javax.faces.el.PropertyNotFoundException - if there is no such named object in this context

getValue

public Object getValue(Object base,
                       int index)
                throws javax.faces.el.EvaluationException,
                       javax.faces.el.PropertyNotFoundException

Convert an index into a corresponding string, and delegate.

Specified by:

getValue in class javax.faces.el.PropertyResolver

Parameters:

base - Base object from which to return a property

index - Index to be returned

Throws:

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

javax.faces.el.PropertyNotFoundException - if there is no such named object in this context

setValue

public void setValue(Object base,
                     int index,
                     Object value)
              throws javax.faces.el.EvaluationException,
                     javax.faces.el.PropertyNotFoundException

Convert an index into a corresponding string, and delegate.

Specified by:

setValue in class javax.faces.el.PropertyResolver

Parameters:

base - Base object into which to store a property

index - Index to be stored

value - Value to be stored

Throws:

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

javax.faces.el.PropertyNotFoundException - if there is no such named object in this context

isReadOnly

public boolean isReadOnly(Object base,
                          int index)
                   throws javax.faces.el.EvaluationException,
                          javax.faces.el.PropertyNotFoundException

Convert an index into a corresponding string, and delegate.

Specified by:

isReadOnly in class javax.faces.el.PropertyResolver

Parameters:

base - Base object from which to check a property

index - Index to be checked

Throws:

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

javax.faces.el.PropertyNotFoundException - if there is no such named object in this context

getType

public Class getType(Object base,
                     int index)
              throws javax.faces.el.EvaluationException,
                     javax.faces.el.PropertyNotFoundException

Convert an index into a corresponding string, and delegate.

Specified by:

getType in class javax.faces.el.PropertyResolver

Parameters:

base - Base object from which to return a property type

index - Index whose type is to be returned

Throws:

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

javax.faces.el.PropertyNotFoundException - if there is no such named object in this context