[svn-r2897] Purpose:

	C++ API for 1.3.x branch

Description:
	The *.C and *.h files named different than those in 1.2.x.
	They are in the form: 'H5' + classname, or just classname if
	the classname is already prefixed with 'H5' to avoid ambiguity
	in documentation context.  This version has several hidden bugs
	fixed and an improvement on the reference counting approach.
	The classes and their inheritance structure are listed below:
	---------------------------------------
	H5Library
	Exception
	RefCounter
	IdComponent
		H5File
		DataSpace
		H5Object
			Group
			AbstractDs
				DataSet
				Attribute
			DataType
				PredType
				EnumType
				CompType
				AtomType
					StrType
					IntType
					FloatType
		PropList
			FileCreatPropList
			FileAccPropList
			DSetCreatPropList
			DSetMemXferPropList
	---------------------------------------
	IdComponent uses RefCounter to keep track of opened objects
	so proper termination of HDF5 objects can be maintained.
	Each class has a .h file containing the class declaration and
	a .C file containing its definition.  In addition to the classes
	files, the following files do not have class information:

	- H5Cpp.h: header file to be included in user's application
	- H5Idtemplates.h: contains a template function used by several classes
	- H5Classes.h: contains forward class declarations
	- H5CommonFG.*: contains common code used by classes H5File and Group
	- H5Include.h: contains the hdf5.h header file and the #undef RCSID
		to work around the problem: multiple defined RcsId
	- H5Alltypes.h: simply serves as a container to hold the header
		files of all datatypes to simplify the header file inclusion

Platforms:
	Solaris (arabica) and Linux

1 files changed, 53 insertions, 0 deletions

diff --git a/c++/src/H5AbstractDs.h b/c++/src/H5AbstractDs.h
new file mode 100644
index 0000000..49aafa9
--- /dev/null
+++ b/c++/src/H5AbstractDs.h
@@ -0,0 +1,53 @@
+#ifndef _AbstractDs_H
+#define _AbstractDs_H
+
+#ifndef H5_NO_NAMESPACE
+namespace H5 {
+#endif
+class AbstractDs : public H5Object {
+   public:
+	// Copy constructor
+	AbstractDs( const AbstractDs& original );
+
+	// 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;
+
+	// Gets a copy the datatype of this abstract dataset.  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 instead .
+	DataType getDataType() const;
+
+        // Gets a copy of the specific datatype of this abstract dataset -
+	// overloading for subtypes.
+        EnumType getEnumType() const;
+        CompType getCompType() const;
+        IntType getIntType() const;
+        FloatType getFloatType() const;
+        StrType getStrType() const;
+
+	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_getType() const = 0;
+
+	// This member function is implemented by DataSet and Attribute
+        virtual void p_close() const = 0;
+};
+#ifndef H5_NO_NAMESPACE
+}
+#endif
+#endif // _AbstractDs_H