LocalObject.h

Go to the documentation of this file.

/*
 *
 *
 * Distributed under the OpenDDS License.
 * See: http://www.opendds.org/license.html
 */

#ifndef OPENDDS_DCPS_LOCALOBJECT_H
#define OPENDDS_DCPS_LOCALOBJECT_H

#include "tao/LocalObject.h"
#include "tao/Version.h"
#include "PoolAllocationBase.h"
#include "RcObject.h"

OPENDDS_BEGIN_VERSIONED_NAMESPACE_DECL

namespace OpenDDS {
namespace DCPS {

// support TAO-style _ptr and _var
typedef CORBA::LocalObject_ptr LocalObject_ptr;
typedef CORBA::LocalObject_var LocalObject_var;


class LocalObjectBase
  : public virtual CORBA::LocalObject
  , public virtual RcObject
{
public:
  virtual void _add_ref()
  {
    RcObject::_add_ref();
  }
  virtual void _remove_ref()
  {
    RcObject::_remove_ref();
  }
  virtual CORBA::ULong _refcount_value() const
  {
    return static_cast<CORBA::ULong>(RcObject::ref_count());
  }
};

/// OpenDDS::DCPS::LocalObject resolves ambiguously-inherited members like
/// _narrow and _ptr_type.  It is used from client code like so:
/// class MyReaderListener
///   : public virtual OpenDDS::DCPS::LocalObject<OpenDDS::DCPS::DataReaderListener> {...};
template <class Stub>
class LocalObject
  : public virtual Stub
  , public virtual LocalObjectBase
{
public:
  typedef typename Stub::_ptr_type _ptr_type;
  typedef typename Stub::_var_type _var_type;
  static _ptr_type _narrow(CORBA::Object_ptr obj) {
    return Stub::_narrow(obj);
  }
};

} // namespace DCPS
} // namespace OpenDDS

OPENDDS_END_VERSIONED_NAMESPACE_DECL

#endif /* OPENDDS_DCPS_LOCALOBJECT_H */