Oracle Coherence for C++ API
Release 3.6.1.0
E18813-01

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# IsNullFilter Class Reference

`#include <coherence/util/filter/IsNullFilter.hpp>`

Inherits EqualsFilter.

List of all members.

## Detailed Description

Filter which compares the result of a method invocation with null.

Author:
  djl 2008.04.07

## Public Types
typedef spec::Handle | Handle
| IsNullFilter Handle definition.
typedef spec::View | View
| IsNullFilter View definition.
typedef spec::Holder | Holder
| IsNullFilter Holder definition.
## Protected Member Functions
| IsNullFilter ()
| Default constructor (necessary for the PortableObject interface).
| IsNullFilter (ValueExtractor::View vValueExtractor)
| Construct a IsNullFilter for testing equality to null.

## Constructor & Destructor Documentation

IsNullFilter | ( | ValueExtractor::View | vValueExtractor | ) | `[protected]`

Construct a IsNullFilter for testing equality to null.

Parameters:

  | vValueExtractor | the ValueExtractor to use by this filter

The documentation for this class was generated from the following file:

- coherence/util/filter/IsNullFilter.hpp

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