// 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.                                                      *
 *                                                                           *
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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   *
 * of the source code distribution tree; Copyright.html can be found at the  *
 * root level of an installed copy of the electronic HDF5 document set and   *
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 * access to either file, you may request a copy from help@hdfgroup.org.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#ifndef __Group_H
#define __Group_H

namespace H5 {

/*! \class Group
    \brief Class Group represents an HDF5 group.

    Inheritance: H5Object -> H5Location -> IdComponent
*/
// Class forwarding
class ArrayType;
class VarLenType;

class H5_DLLCPP Group : public H5Object, public CommonFG {
   public:
        // Group constructor to create a group or file (aka root group).
        Group(const char* name, size_t size_hint = 0);
        Group(const H5std_string& name, size_t size_hint = 0);

        // Group constructor to open a group or file (aka root group).
        Group(const char* name);
        Group(const H5std_string& name);

        // Close this group.
        virtual void close();

        ///\brief Returns this class name.
        virtual H5std_string fromClass () const { return("Group"); }

        // Throw group exception.
        virtual void throwException(const H5std_string& func_name, const H5std_string& msg) const;

        // for CommonFG to get the file id.
        virtual hid_t getLocId() const;

        // Creates a group by way of dereference.
        Group(const H5Location& loc, const void* ref, H5R_type_t ref_type = H5R_OBJECT, const PropList& plist = PropList::DEFAULT);
        // Removed in 1.10.1, because H5Location is baseclass
//        Group(const Attribute& attr, const void* ref, H5R_type_t ref_type = H5R_OBJECT, const PropList& plist = PropList::DEFAULT);

        // Opens an object within a group or a file, i.e., root group.
        hid_t getObjId(const char* name, const PropList& plist = PropList::DEFAULT) const;
        hid_t getObjId(const H5std_string& name, const PropList& plist = PropList::DEFAULT) const;

        // Closes an object opened by getObjId().
        void closeObjId(hid_t obj_id) const;

        // default constructor
        Group();

        // Copy constructor: makes a copy of the original object
        Group(const Group& original);

        // Gets the group id.
        virtual hid_t getId() const;

        // Destructor
        virtual ~Group();

        // Creates a copy of an existing group using its id.
        Group(const hid_t group_id);

   protected:
#ifndef DOXYGEN_SHOULD_SKIP_THIS
        // Sets the group id.
        virtual void p_setId(const hid_t new_id);
#endif // DOXYGEN_SHOULD_SKIP_THIS

   private:
        hid_t id;    // HDF5 group id

}; // end of Group
} // namespace H5

#endif // __Group_H