Package javax.el

Class StaticFieldELResolver

java.lang.Object
javax.el.ELResolver
javax.el.StaticFieldELResolver

public class StaticFieldELResolver extends ELResolver
Since:
EL 3.0
  • Constructor Details

    • StaticFieldELResolver

      public StaticFieldELResolver()
  • Method Details

    • getValue

      public Object getValue(ELContext context, Object base, Object property)
      Description copied from class: ELResolver
      Obtain the value of the given property on the given object using the given context.
      Specified by:
      getValue in class 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
    • setValue

      public void setValue(ELContext context, Object base, Object property, Object value)
      Description copied from class: ELResolver
      Set the value of the given property on the given object using the given context.
      Specified by:
      setValue in class 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
    • invoke

      public Object invoke(ELContext context, Object base, Object method, Class<?>[] paramTypes, Object[] params)
      Description copied from class: ELResolver
      Invokes a method on the the given object. This default implementation always returns null.
      Overrides:
      invoke in class ELResolver
      Parameters:
      context - The EL context for this evaluation
      base - The base object on which the method is to be found
      method - The method to invoke
      paramTypes - The types of the parameters of the method to invoke
      params - The parameters with which to invoke the method
      Returns:
      Always null
    • getType

      public Class<?> getType(ELContext context, Object base, Object property)
      Description copied from class: 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 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.
    • isReadOnly

      public boolean isReadOnly(ELContext context, Object base, Object property)
      Description copied from class: ELResolver
      Determine if the given property on the given object is read-only using the given context.
      Specified by:
      isReadOnly in class 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(ELContext context, Object base)
      Always returns null.
      Specified by:
      getFeatureDescriptors in class 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<?> getCommonPropertyType(ELContext context, Object base)
      Description copied from class: ELResolver
      Obtain the most common type that is acceptable for the given base object.
      Specified by:
      getCommonPropertyType in class ELResolver
      Parameters:
      context - The context in which the examination takes place
      base - The object to examine
      Returns:
      This resolver always returns String.class