Package javax.servlet.jsp.el

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)
      Obtain the most generally acceptable type that may be used to set the given property on the given object using the given context.
      java.lang.Object getValue​(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)
      Obtain the value of the given property on the given object using the given context.
      boolean isReadOnly​(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)
      Determine if the given property on the given object is read-only using the given context.
      void setValue​(javax.el.ELContext context, java.lang.Object base, java.lang.Object property, java.lang.Object value)
      Set the value of the given property on the given object using the given context.

      • 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)
        Description copied from class: javax.el.ELResolver
        Obtain the value of the given property on the given object using the given context.
        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)
        Description copied from class: javax.el.ELResolver
        Obtain the most generally acceptable type that may be used to set the given property on the given object using the given context.
        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 most general type that maybe used to set the provided property or null if the resolver is read-only.

      • setValue

        public void setValue​(javax.el.ELContext context,
                     java.lang.Object base,
                     java.lang.Object property,
                     java.lang.Object value)
        Description copied from class: javax.el.ELResolver
        Set the value of the given property on the given object using the given context.
        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)
        Description copied from class: javax.el.ELResolver
        Determine if the given property on the given object is read-only using the given context.
        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