org.springframework.binding.expression.el
Class DefaultELResolver

java.lang.Object
  javax.el.ELResolver
      javax.el.CompositeELResolver
          org.springframework.binding.expression.el.DefaultELResolver

public class DefaultELResolver
extends javax.el.CompositeELResolver

A generic ELResolver to be used as a default when no other ELResolvers have been configured by the client application. This implementation will resolve the first part of the expression to the pre-configured base object, and will then delegate through the chain of standard resolvers for the rest of the expression. Note - Requires Java 5 or higher due to the use of generics in the API's basic resolvers.

Author:

Jeremy Grelle

Field Summary

Fields inherited from class javax.el.ELResolver

RESOLVABLE_AT_DESIGN_TIME, TYPE

Constructor Summary

DefaultELResolver(java.util.List<? extends javax.el.ELResolver> customResolvers)
Creates a new default EL resolver for resolving properties of the root object.

DefaultELResolver(java.lang.Object target, java.util.List<? extends javax.el.ELResolver> customResolvers)
Creates a new default EL resolver for resolving properties of the root object.

Method Summary

java.lang.Object	getTarget()
java.lang.Class<?>	getType(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)
java.lang.Object	getValue(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)
void	setValue(javax.el.ELContext context, java.lang.Object base, java.lang.Object property, java.lang.Object val)

Methods inherited from class javax.el.CompositeELResolver

add, getCommonPropertyType, getFeatureDescriptors, invoke, isReadOnly

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultELResolver

public DefaultELResolver(java.util.List<? extends javax.el.ELResolver> customResolvers)

Creates a new default EL resolver for resolving properties of the root object. Assumes a null target and expect that the base object has already been resolved by the time this resolver runs.

Parameters:

customResolvers - the custom resolvers to apply before this resolver

DefaultELResolver

public DefaultELResolver(java.lang.Object target,
                         java.util.List<? extends javax.el.ELResolver> customResolvers)

Creates a new default EL resolver for resolving properties of the root object.

Parameters:

target - the target, or "root", object of the expression

customResolvers - the custom resolvers to apply before this resolver

Method Detail

getTarget

public java.lang.Object getTarget()

getType

public java.lang.Class<?> getType(javax.el.ELContext context,
                                  java.lang.Object base,
                                  java.lang.Object property)

Overrides:

getType in class javax.el.CompositeELResolver

getValue

public java.lang.Object getValue(javax.el.ELContext context,
                                 java.lang.Object base,
                                 java.lang.Object property)

Overrides:

getValue in class javax.el.CompositeELResolver

setValue

public void setValue(javax.el.ELContext context,
                     java.lang.Object base,
                     java.lang.Object property,
                     java.lang.Object val)

Overrides:

setValue in class javax.el.CompositeELResolver