HDF5 C++ API Reference Manual

 

 

H5AbstractDs.h

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// Class AbstractDs is an abstract base class, from which Attribute and
// DataSet inherit.  It provides the services that are common to both
// Attribute and DataSet.  It also inherits from H5Object and passes down
// the services that H5Object provides.

#ifndef _AbstractDs_H
#define _AbstractDs_H

#ifndef H5_NO_NAMESPACE
namespace H5 {
#endif

class ArrayType;
class CompType;
class EnumType;
class FloatType;
class IntType;
class StrType;
class VarLenType;
class H5_DLLCPP AbstractDs {
   public:
        // Gets a copy the datatype of that this abstract dataset uses.
        // Note that this datatype is a generic one and can only be accessed
        // via generic member functions, i.e., member functions belong
        // to DataType.  To get specific datatype, i.e. EnumType, FloatType,
        // etc..., use the specific functions, that follow, instead.
        DataType getDataType() const;

        // Gets a copy of the specific datatype of this abstract dataset.
        ArrayType getArrayType() const;
        CompType getCompType() const;
        EnumType getEnumType() const;
        IntType getIntType() const;
        FloatType getFloatType() const;
        StrType getStrType() const;
        VarLenType getVarLenType() const;

        // Gets the size in memory of this abstract dataset.
        virtual size_t getInMemDataSize() const = 0;

        // Gets the dataspace of this abstract dataset - pure virtual.
        virtual DataSpace getSpace() const = 0;

        // Gets the class of the datatype that is used by this abstract
        // dataset.
        H5T_class_t getTypeClass() const;

        // Returns the amount of storage size required for this abstract
        // dataset - pure virtual.
        virtual hsize_t getStorageSize() const = 0;

        // Returns this class name
        virtual H5std_string fromClass() const = 0;

        // Copy constructor
        AbstractDs( const AbstractDs& original );

        // Destructor
        virtual ~AbstractDs();

   protected:
        // Default constructor
        AbstractDs();

        // Constructor that takes an attribute id or a dataset id.
        AbstractDs( const hid_t ds_id );

   private:
        // This member function is implemented by DataSet and Attribute.
        virtual hid_t p_get_type() const = 0;
};
#ifndef H5_NO_NAMESPACE
}
#endif
#endif // _AbstractDs_H

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