HDF5 C++ API Reference Manual

 

 

 

H5Attribute.h

Go to the documentation of this file.

// C++ informative line for the emacs editor: -*- C++ -*-
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
  * 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 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   *
  * 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     *
  * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#ifndef _H5Attribute_H
#define _H5Attribute_H

#ifndef H5_NO_NAMESPACE
namespace H5 {
#endif

class H5_DLLCPP Attribute : public AbstractDs {
   public:
        // Gets the name of this attribute.
        ssize_t getName( size_t buf_size, string& attr_name ) const;
        string getName( size_t buf_size ) const; // returns name, not its length
        string getName() const; // returns name, no argument

        // Gets a copy of the dataspace for this attribute.
        virtual DataSpace getSpace() const;

        // Reads data from this attribute.
        void read( const DataType& mem_type, void *buf ) const;
        void read( const DataType& mem_type, string& strg ) const;

        // Writes data to this attribute.
        void write(const DataType& mem_type, const void *buf ) const;
        void write(const DataType& mem_type, const string& strg ) const;

        // Creates a copy of an existing attribute using the attribute id
        Attribute( const hid_t attr_id );

        // Copy constructor: makes a copy of an existing Attribute object.
        Attribute( const Attribute& original );

#ifndef DOXYGEN_SHOULD_SKIP_THIS
        // Used by the API to appropriately close an attribute
        virtual void p_close() const;
#endif // DOXYGEN_SHOULD_SKIP_THIS

        // Destructor: properly terminates access to this attribute.
        virtual ~Attribute();

   private:
        // This function contains the common code that is used by 
        // getTypeClass and various API functions getXxxType 
        // defined in AbstractDs for generic datatype and specific 
        // sub-types
        virtual hid_t p_get_type() const;

        // do not inherit iterateAttrs from H5Object
        int iterateAttrs() { return 0; }

        // Default constructor
        Attribute();
};
#ifndef H5_NO_NAMESPACE
}
#endif
#endif

---