Class ImplicitObjectELResolver


  • public class ImplicitObjectELResolver
    extends javax.el.ELResolver
    Provides resolution in EL for the implicit variables of a JSP page.
    Since:
    JSP 2.1
    • Field Summary

      • Fields inherited from class javax.el.ELResolver

        RESOLVABLE_AT_DESIGN_TIME, TYPE
    • Constructor Summary

      Constructors 
      Constructor Description
      ImplicitObjectELResolver()
      Creates an instance of the implicit object resolver for EL.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.Class<java.lang.String> getCommonPropertyType​(javax.el.ELContext context, java.lang.Object base)
      Obtain the most common type that is acceptable for the given base object.
      java.util.Iterator<java.beans.FeatureDescriptor> getFeatureDescriptors​(javax.el.ELContext context, java.lang.Object base)
      Obtain the feature descriptors for the resolvable properties of the given object.
      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)  
      boolean isReadOnly​(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 value)  
      • Methods inherited from class javax.el.ELResolver

        convertToType, invoke
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • ImplicitObjectELResolver

        public ImplicitObjectELResolver()
        Creates an instance of the implicit object resolver for EL.
    • Method Detail

      • getValue

        public java.lang.Object getValue​(javax.el.ELContext context,
                                         java.lang.Object base,
                                         java.lang.Object property)
        Specified by:
        getValue in class javax.el.ELResolver
        Parameters:
        context - The EL context for this evaluation
        base - The base object on which the property is to be found
        property - The property whose value is to be returned
        Returns:
        the value of the provided property
      • getType

        public java.lang.Class getType​(javax.el.ELContext context,
                                       java.lang.Object base,
                                       java.lang.Object property)
        Specified by:
        getType in class javax.el.ELResolver
        Parameters:
        context - The EL context for this evaluation
        base - The base object on which the property is to be found
        property - The property whose type is to be returned
        Returns:
        the type of the provided property
      • setValue

        public void setValue​(javax.el.ELContext context,
                             java.lang.Object base,
                             java.lang.Object property,
                             java.lang.Object value)
        Specified by:
        setValue in class javax.el.ELResolver
        Parameters:
        context - The EL context for this evaluation
        base - The base object on which the property is to be found
        property - The property whose value is to be set
        value - The value to set the property to
      • isReadOnly

        public boolean isReadOnly​(javax.el.ELContext context,
                                  java.lang.Object base,
                                  java.lang.Object property)
        Specified by:
        isReadOnly in class javax.el.ELResolver
        Parameters:
        context - The EL context for this evaluation
        base - The base object on which the property is to be found
        property - The property to be checked for read only status
        Returns:
        true if the identified property is read only, otherwise false
      • getFeatureDescriptors

        public java.util.Iterator<java.beans.FeatureDescriptor> getFeatureDescriptors​(javax.el.ELContext context,
                                                                                      java.lang.Object base)
        Description copied from class: javax.el.ELResolver
        Obtain the feature descriptors for the resolvable properties of the given object.
        Specified by:
        getFeatureDescriptors in class javax.el.ELResolver
        Parameters:
        context - The context in which the examination takes place
        base - The object to examine
        Returns:
        An iterator, possibly empty, of feature descriptors of the given object
      • getCommonPropertyType

        public java.lang.Class<java.lang.String> getCommonPropertyType​(javax.el.ELContext context,
                                                                       java.lang.Object base)
        Description copied from class: javax.el.ELResolver
        Obtain the most common type that is acceptable for the given base object.
        Specified by:
        getCommonPropertyType in class javax.el.ELResolver
        Parameters:
        context - The context in which the examination takes place
        base - The object to examine
        Returns:
        {code null} if the most common type cannot be determine, otherwise the most common type