// 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. *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

// Class DataSet inherits from AbstractDs and provides accesses to a dataset.

#ifndef _H5DataSet_H
#define _H5DataSet_H

#ifndef H5_NO_NAMESPACE
namespace H5 {
#endif

class H5_DLLCPP DataSet : public AbstractDs {
   public:
	// Close this dataset.
	virtual void close();

	// Extends the dataset with unlimited dimension.
	void extend( const hsize_t* size ) const;

	// Fills a selection in memory with a value
	void fillMemBuf(const void *fill, DataType& fill_type, void *buf, DataType& buf_type, DataSpace& space);
	// Fills a selection in memory with zero
	void fillMemBuf(void *buf, DataType& buf_type, DataSpace& space);

	// Gets the creation property list of this dataset.
	DSetCreatPropList getCreatePlist() const;

	// Returns the address of this dataset in the file.
	haddr_t getOffset() const;

	// Gets the dataspace of this dataset.
	virtual DataSpace getSpace() const;

	// Determines whether space has been allocated for a dataset.
	void getSpaceStatus(H5D_space_status_t& status) const;

	// Returns the amount of storage size required for this dataset.
	hsize_t getStorageSize() const;

	// not yet implemented??
	hsize_t getVlenBufSize( DataType& type, DataSpace& space ) const;
	void vlenReclaim( DataType& type, DataSpace& space, DSetMemXferPropList& xfer_plist, void* buf ) const;

	// Reads the data of this dataset and stores it in the provided buffer.
	// The memory and file dataspaces and the transferring property list
	// can be defaults.
	void read( void* buf, const DataType& mem_type, const DataSpace& mem_space = DataSpace::ALL, const DataSpace& file_space = DataSpace::ALL, const DSetMemXferPropList& xfer_plist = DSetMemXferPropList::DEFAULT ) const;
        void read( H5_std::string& buf, const DataType& mem_type, const DataSpace& mem_space = DataSpace::ALL, const DataSpace& file_space = DataSpace::ALL, const DSetMemXferPropList& xfer_plist = DSetMemXferPropList::DEFAULT ) const;

	// Writes the buffered data to this dataset.
	// The memory and file dataspaces and the transferring property list
	// can be defaults.
	void write( const void* buf, const DataType& mem_type, const DataSpace& mem_space = DataSpace::ALL, const DataSpace& file_space = DataSpace::ALL, const DSetMemXferPropList& xfer_plist = DSetMemXferPropList::DEFAULT ) const;
        void write( const H5_std::string& buf, const DataType& mem_type, const DataSpace& mem_space = DataSpace::ALL, const DataSpace& file_space = DataSpace::ALL, const DSetMemXferPropList& xfer_plist = DSetMemXferPropList::DEFAULT ) const;

	// Iterates the selected elements in the specified dataspace - not implemented in C++ style yet
        int iterateElems( void* buf, const DataType& type, const DataSpace& space, H5D_operator_t op, void* op_data = NULL );

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

	// Retrieves a dataspace with the region pointed to selected.
	DataSpace getRegion(void *ref, H5R_type_t ref_type = H5R_DATASET_REGION) const;

	// Creates a reference to a named Hdf5 object or to a dataset region
	// in this object.
	void* Reference(const char* name, DataSpace& dataspace, H5R_type_t ref_type = H5R_DATASET_REGION) const;

	// Creates a reference to a named Hdf5 object in this object.
	void* Reference(const char* name) const;
	void* Reference(const H5_std::string& name) const;

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

	// Creates a copy of an existing DataSet using its id.
	DataSet(const hid_t existing_id);

	// Default constructor.
	DataSet();

	// Copy constructor.
	DataSet( const DataSet& original );

	// Destructor: properly terminates access to this dataset.
	virtual ~DataSet();

   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;
};
#ifndef H5_NO_NAMESPACE
}
#endif
#endif