example7

AttributePersistentRef interface(creations/saving/restoring)
SALOMEDS methods : FindOrCreateAttribute, SaveAs, FindComponent FindAttribute Open
Attribute methods : SetValue, Value

#              create   AttributePersistentRef   
#===========================================================
A = batchmode_geompy.myBuilder.FindOrCreateAttribute(batchmode_geompy.father, "AttributePersistentRef")
if A == None :
        raise  RuntimeError, "Can't create AttributePersistentRef attribute"
A = A._narrow(SALOMEDS.AttributePersistentRef)

if A == None :
        raise  RuntimeError, "Can't create AttributePersistentRef attribute"

A.SetValue("/tmp/test;1")

#      save / restore study      
#============================================================
str= os.getenv("TmpDir")
if str == None:
        str = "/tmp"
file = str+"/test.hdf"

batchmode_geompy.myStudyManager.SaveAs(file, batchmode_geompy.myStudy)
openedStudy = batchmode_geompy.myStudyManager.Open(file);

if openedStudy == None:
        raise  RuntimeError, "Can't open saved study!"

father = openedStudy.FindComponent("GEOM")
if father is None:
         raise  RuntimeError, "Geom component is not found!  Wrong study is opened." 


#     find AttributePersistentRef
#============================================================

res,A=father.FindAttribute("AttributePersistentRef")
if res == 0 or A == None:
        raise  RuntimeError, "Error:  not found AttributePersistentRef"

A = A._narrow(SALOMEDS.AttributePersistentRef)

if A == None :
        raise  RuntimeError, "Can't create AttributePersistentRef attribute"

if A.Value() != "/tmp/test;1":
        "Error: wrong value of AttributePersistentRef"