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// C++ informative line for the emacs editor: -*- C++ -*-
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* Copyright by the Board of Trustees of the University of Illinois. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#ifndef __IdComponent_H
#define __IdComponent_H
namespace H5 {
/*! \class IdComponent
\brief Class IdComponent provides wrappers of the C functions that
operate on an HDF5 identifier.
In most cases, the C library handles these operations and an application
rarely needs them.
*/
class H5_DLLCPP IdComponent {
public:
// Increment reference counter.
void incRefCount(const hid_t obj_id) const;
void incRefCount() const;
// Decrement reference counter.
void decRefCount(const hid_t obj_id) const;
void decRefCount() const;
// Get the reference counter to this identifier.
int getCounter(const hid_t obj_id) const;
int getCounter() const;
// Returns an HDF5 object type, given the object id.
static H5I_type_t getHDFObjType(const hid_t obj_id);
// Returns an HDF5 object type of this object.
H5I_type_t getHDFObjType() const;
// Returns the number of members in a type.
static hsize_t getNumMembers(H5I_type_t type);
// Checks if the given ID is valid.
static bool isValid(hid_t an_id);
// Determines if an type exists.
static bool typeExists(H5I_type_t type);
// Assignment operator.
IdComponent& operator=(const IdComponent& rhs);
// Sets the identifier of this object to a new value.
void setId(const hid_t new_id);
// *** Deprecation warning ***
// The following two constructors are no longer appropriate after the
// data member "id" had been moved to the sub-classes.
// The copy constructor is a noop and is removed in 1.8.15 and the
// other will be removed from 1.10 release, and then from 1.8 if its
// removal does not raise any problems in two 1.10 releases.
// Creates an object to hold an HDF5 identifier.
// IdComponent(const hid_t h5_id); - removed from 1.10.1
#ifndef DOXYGEN_SHOULD_SKIP_THIS
// Copy constructor: makes copy of the original IdComponent object.
// IdComponent(const IdComponent& original); - removed from 1.8.15
// Gets the identifier of this object.
virtual hid_t getId () const = 0;
// Pure virtual function for there are various H5*close for the
// subclasses.
virtual void close() = 0;
// Makes and returns the string "<class-name>::<func_name>";
// <class-name> is returned by fromClass().
H5std_string inMemFunc(const char* func_name) const;
///\brief Returns this class name.
virtual H5std_string fromClass() const { return("IdComponent");}
#endif // DOXYGEN_SHOULD_SKIP_THIS
// Destructor
virtual ~IdComponent();
#ifndef DOXYGEN_SHOULD_SKIP_THIS
protected:
// Default constructor.
IdComponent();
// Gets the name of the file, in which an HDF5 object belongs.
H5std_string p_get_file_name() const;
// Verifies that the given id is valid.
static bool p_valid_id(const hid_t obj_id);
// Sets the identifier of this object to a new value. - this one
// doesn't increment reference count
virtual void p_setId(const hid_t new_id) = 0;
// This flag is used to decide whether H5dont_atexit should be called
static bool H5dontAtexit_called;
private:
// This flag indicates whether H5Library::initH5cpp has been called
// to register various terminating functions with atexit()
static bool H5cppinit;
#endif // DOXYGEN_SHOULD_SKIP_THIS
}; // end class IdComponent
} // namespace H5
#endif // __IdComponent_H
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