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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 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://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
// 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 H5Object, 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.
virtual hsize_t getStorageSize() const;
// Returns the in memory size of this attribute's data.
virtual size_t getInMemDataSize() const;
// Returns the number of bytes required to store VL data.
hsize_t getVlenBufSize( DataType& type, DataSpace& space ) const;
// Reclaims VL datatype memory buffers.
static void vlenReclaim(const DataType& type, const DataSpace& space, const DSetMemXferPropList& xfer_plist, void* buf );
static void vlenReclaim(void *buf, const DataType& type, const DataSpace& space = DataSpace::ALL, const DSetMemXferPropList& xfer_plist = DSetMemXferPropList::DEFAULT);
// 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( H5std_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 H5std_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 );
#ifndef H5_NO_DEPRECATED_SYMBOLS
// Retrieves the type of object that an object reference points to.
H5G_obj_t getObjType(void *ref, H5R_type_t ref_type = H5R_OBJECT) const;
#endif /* H5_NO_DEPRECATED_SYMBOLS */
// Retrieves a dataspace with the region pointed to selected.
DataSpace getRegion(void *ref, H5R_type_t ref_type = H5R_DATASET_REGION) const;
///\brief Returns this class name
virtual H5std_string fromClass () const { return("DataSet"); }
// Creates a dataset by way of dereference.
DataSet(H5Object& obj, const void* ref, H5R_type_t ref_type = H5R_OBJECT);
DataSet(H5File& h5file, const void* ref, H5R_type_t ref_type = H5R_OBJECT);
DataSet(Attribute& attr, const void* ref, H5R_type_t ref_type = H5R_OBJECT);
// Default constructor.
DataSet();
// Copy constructor.
DataSet( const DataSet& original );
// Creates a copy of an existing DataSet using its id.
DataSet(const hid_t existing_id);
// Gets the dataset id.
virtual hid_t getId() const;
// Destructor: properly terminates access to this dataset.
virtual ~DataSet();
private:
hid_t id; // HDF5 dataset id
#ifndef DOXYGEN_SHOULD_SKIP_THIS
// 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;
// Reads variable or fixed len strings from this dataset.
void p_read_fixed_len(const hid_t mem_type_id, const hid_t mem_space_id, const hid_t file_space_id, const hid_t xfer_plist_id, H5std_string& strg) const;
void p_read_variable_len(const hid_t mem_type_id, const hid_t mem_space_id, const hid_t file_space_id, const hid_t xfer_plist_id, H5std_string& strg) const;
protected:
// Sets the dataset id.
virtual void p_setId(const hid_t new_id);
#endif // DOXYGEN_SHOULD_SKIP_THIS
};
#ifndef H5_NO_NAMESPACE
}
#endif
#endif
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