Class ImplicitObjectELResolver

java.lang.Object
javax.el.ELResolver
javax.servlet.jsp.el.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

    Modifier and Type
    Method
    Description
    Class<String>
    getCommonPropertyType(javax.el.ELContext context, Object base)
    Obtain the most common type that is acceptable for the given base object.
    Iterator<FeatureDescriptor>
    getFeatureDescriptors(javax.el.ELContext context, Object base)
    Obtain the feature descriptors for the resolvable properties of the given object.
    Class
    getType(javax.el.ELContext context, Object base, 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.
    Object
    getValue(javax.el.ELContext context, Object base, Object property)
    Obtain the value of the given property on the given object using the given context.
    boolean
    isReadOnly(javax.el.ELContext context, Object base, Object property)
    Determine if the given property on the given object is read-only using the given context.
    void
    setValue(javax.el.ELContext context, Object base, Object property, 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 Details

    • ImplicitObjectELResolver

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

  • Method Details

    • getValue

      public Object getValue(javax.el.ELContext context, Object base, 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 Class getType(javax.el.ELContext context, Object base, 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, Object base, Object property, 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, Object base, 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 Iterator<FeatureDescriptor> getFeatureDescriptors(javax.el.ELContext context, 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 Class<String> getCommonPropertyType(javax.el.ELContext context, 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