Ioss_NullEntity.h

Go to the documentation of this file.

// Copyright(C) 1999-2017 National Technology & Engineering Solutions
// of Sandia, LLC (NTESS).  Under the terms of Contract DE-NA0003525 with
// NTESS, the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
//
//     * Neither the name of NTESS nor the names of its
//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
#ifndef IOSS_Ioss_NullEntity_h
#define IOSS_Ioss_NullEntity_h
 
#include <Ioss_CodeTypes.h>
#include <Ioss_GroupingEntity.h>
#include <string>
 
namespace Ioss {
  class DatabaseIO;
 
  class NullEntity : public GroupingEntity
  {
  public:
    NullEntity() : Ioss::GroupingEntity(nullptr, "null_entity", 0) {}
 
    std::string type_string() const override { return "NullEntity"; }
    std::string short_type_string() const override { return "null"; }
    std::string contains_string() const override { return "Nothing"; }
    EntityType  type() const override { return INVALID_TYPE; }
 
    // Handle implicit properties -- These are calcuated from data stored
    // in the grouping entity instead of having an explicit value assigned.
    // An example would be 'element_block_count' for a region.
    Property get_implicit_property(const std::string &my_name) const override
    {
      return Ioss::GroupingEntity::get_implicit_property(my_name);
    }
 
  protected:
    int64_t internal_get_field_data(const Field &, void *, size_t) const override { return 0; }
 
    int64_t internal_put_field_data(const Field &, void *, size_t) const override { return 0; }
  };
} // namespace Ioss
#endif