// C++ informative line for the emacs editor: -*- C++ -*-
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
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 * terms governing use, modification, and redistribution, is contained in    *
 * the files COPYING and Copyright.html.  COPYING can be found at the root   *
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 * root level of an installed copy of the electronic HDF5 document set and   *
 * is linked from the top-level documents page.  It can also be found at     *
 * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html.  If you do not have     *
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#ifndef _IdComponent_H
#define _IdComponent_H

// IdComponent represents an HDF5 object that has an identifier.

#ifndef H5_NO_NAMESPACE
namespace H5 {
#endif

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 HDF object type, given the object id.
	static H5I_type_t getHDFObjType(const hid_t obj_id);

	// Assignment operator.
	IdComponent& operator=( const IdComponent& rhs );

	// Sets the identifier of this object to a new value.
	void setId(const hid_t new_id);

	// Creates an object to hold an HDF5 identifier.
	IdComponent( const hid_t h5_id );

	// Copy constructor: makes copy of the original IdComponent object.
	IdComponent( const IdComponent& original );

	// Gets the value of IdComponent's data member.
	virtual hid_t getId () const;

#ifndef DOXYGEN_SHOULD_SKIP_THIS
	// 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().
	H5_std::string inMemFunc(const char* func_name) const;

	// Returns this class name.
        virtual H5_std::string fromClass() const { return("IdComponent");}

#endif // DOXYGEN_SHOULD_SKIP_THIS

	// Destructor
	virtual ~IdComponent();

   protected:
#ifndef DOXYGEN_SHOULD_SKIP_THIS
	hid_t id;	// HDF5 object id

	// Default constructor.
	IdComponent();

	// Gets the name of the file, in which an HDF5 object belongs.
	H5_std::string p_get_file_name() const;

        // Gets the id of the H5 file in which the given object is located.
        hid_t p_get_file_id();

        // Creates a reference to an HDF5 object or a dataset region.
        void* p_reference(const char* name, hid_t space_id, H5R_type_t ref_type) const;

        // Retrieves the type of object that an object reference points to.
        H5G_obj_t p_get_obj_type(void *ref, H5R_type_t ref_type) const;

        // Retrieves a dataspace with the region pointed to selected.
        hid_t p_get_region(void *ref, H5R_type_t ref_type) const;

	// Verifies that the given id is valid.
	bool p_valid_id(const hid_t obj_id) const;

#endif // DOXYGEN_SHOULD_SKIP_THIS

}; // end class IdComponent

#ifndef H5_NO_NAMESPACE
}
#endif
#endif