Improvement of class hierarchy

Description:
    - Moved class Attribute to be derived from class H5Location instead of
      IdComponent because an attribute id can be used as loc_id in C APIs.
    - Copied wrappers of H5A APIs in H5Location into H5Object because H5A
      functions do not take an attribute id as loc_id.  The original wrappers
      will be deprecated in future releases.
    - Revised comments
Platforms tested:
    Linux/32 2.6 (jam)
    Linux/64 (platypus)
    Darwin (osx1010test)

1 files changed, 3 insertions, 3 deletions

diff --git a/c++/src/H5Attribute.cpp b/c++/src/H5Attribute.cpp
index cb0186a..55ccfe7 100644
--- a/c++/src/H5Attribute.cpp
+++ b/c++/src/H5Attribute.cpp
@@ -49,7 +49,7 @@ namespace H5 {
 ///\brief       Default constructor: Creates a stub attribute
 // Programmer   Binh-Minh Ribler - May, 2004
 //--------------------------------------------------------------------------
-Attribute::Attribute() : AbstractDs(), IdComponent(), id(H5I_INVALID_HID) {}
+Attribute::Attribute() : AbstractDs(), H5Location(), id(H5I_INVALID_HID) {}
 
 //--------------------------------------------------------------------------
 // Function:    Attribute copy constructor
@@ -57,7 +57,7 @@ Attribute::Attribute() : AbstractDs(), IdComponent(), id(H5I_INVALID_HID) {}
 ///\param       original  - IN: Original Attribute object to copy
 // Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-Attribute::Attribute(const Attribute& original) : AbstractDs(), IdComponent(), id(original.id)
+Attribute::Attribute(const Attribute& original) : AbstractDs(), H5Location(), id(original.id)
 {
     incRefCount(); // increment number of references to this id
 }
@@ -70,7 +70,7 @@ Attribute::Attribute(const Attribute& original) : AbstractDs(), IdComponent(), i
 ///\exception   H5::AttributeIException
 // Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-Attribute::Attribute(const hid_t existing_id) : AbstractDs(), IdComponent(), id(existing_id)
+Attribute::Attribute(const hid_t existing_id) : AbstractDs(), H5Location(), id(existing_id)
 {
     incRefCount(); // increment number of references to this id
 }