Purpose: Add new C++ wrappers (HDFFV-10156)

Description:
    Added wrappers for H5Iis_valid, H5Ps/get_nlinks, H5Tget_create_plist,
    H5Oopen, and H5Oclose

        // Checks if the given ID is valid.
        static bool isValid(hid_t an_id);

        // Sets the number of soft or user-defined links that can be
        // traversed before a failure occurs.
        void setNumLinks(size_t nlinks) const;

        // Gets the number of soft or user-defined link traversals allowed
        size_t getNumLinks() const;

        // Returns a copy of the creation property list of a datatype.
        PropList getCreatePlist() const;

        // Opens an object within a group or a file, i.e., root group.
        hid_t openObjId(const char* name,...);
        hid_t openObjId(const H5std_string& name,...);

        // Closes an object opened by getObjId().
        void closeObjId(hid_t obj_id) const;

        // Gets general information about this file.
        void getFileInfo(H5F_info2_t& file_info) const;

Platforms tested:
    Linux/32 2.6 (jam)
    Linux/64 (platypus)
    Darwin (osx1010test)

1 files changed, 21 insertions, 0 deletions

diff --git a/c++/src/H5IdComponent.cpp b/c++/src/H5IdComponent.cpp
index 7054369..a8e8ba4 100644
--- a/c++/src/H5IdComponent.cpp
+++ b/c++/src/H5IdComponent.cpp
@@ -163,6 +163,27 @@ H5I_type_t IdComponent::getHDFObjType() const
 }
 
 //--------------------------------------------------------------------------
+// Function:    isValid (static)
+///\brief       Checks if the given ID is valid.
+///\return      true if the given identifier is valid, and false, otherwise.
+///\par Description
+///             A valid ID is one that is in use and has an application
+///             reference count of at least 1.
+// Programmer   Binh-Minh Ribler - Mar 1, 2017
+//--------------------------------------------------------------------------
+bool IdComponent::isValid(hid_t an_id)
+{
+    // Call C function
+    htri_t ret_value = H5Iis_valid(an_id);
+    if (ret_value > 0)
+        return true;
+    else if (ret_value == 0)
+        return false;
+    else // Raise exception when H5Iis_valid returns a negative value
+        throw IdComponentException("isValid", "H5Iis_valid failed");
+}
+
+//--------------------------------------------------------------------------
 // Function:    IdComponent::operator=
 ///\brief       Assignment operator.
 ///\param       rhs - IN: Reference to the existing object