src/NamingService/SALOME_NamingServicePy.py

   1 #! /usr/bin/env python
   2
   3 #=============================================================================
   4 # File      : SALOME_NamingServicePy.py
   5 # Created   : lun oct  15 14:55 CEST 2001
   6 # Author    : Estelle Deville, CEA
   7 # Project   : SALOME
   8 # Copyright : CEA 2001
   9 # $Header$
  10 #=============================================================================
  11
  12 import sys
  13 from omniORB import CORBA
  14 import CosNaming
  15 from string import *
  16
  17 from SALOME_utilities import *
  18 #=============================================================================
  19
  20 class SALOME_NamingServicePy_i:
  21     _orb = None
  22     _root_context=None
  23     _current_context=None
  24     _obj=None
  25
  26     #-------------------------------------------------------------------------
  27
  28     def __init__(self, orb):
  29         MESSAGE ( "SALOME_NamingServicePy_i::__init__" )
  30         self._orb = orb
  31         # initialize root context and current context
  32         obj =self._orb.resolve_initial_references("NameService")
  33         self._root_context =obj._narrow(CosNaming.NamingContext)
  34         self._current_context = self._root_context
  35
  36
  37         if self._root_context is None :
  38             MESSAGE ( "Name Service Reference is invalid" )
  39             sys.exit(1)
  40
  41     #-------------------------------------------------------------------------
  42     def Register(self,ObjRef, Path):
  43         MESSAGE ( "SALOME_NamingServicePy_i::Register" )
  44         _not_exist = 0
  45         path_list = list(Path)
  46         if path_list[0]=='/':
  47             self._current_context = self._root_context
  48             #delete first '/' before split
  49             Path=Path[1:]
  50
  51         result_resolve_path = split(Path,'/')
  52         if len(result_resolve_path)>1:
  53             # A directory is treated (not only an object name)
  54             # We had to test if the directory where ObjRef should be recorded
  55             # is already done
  56             # If not, the new context has to be created
  57             _context_name = []
  58             for i in range(len(result_resolve_path)-1):
  59                 _context_name.append(CosNaming.NameComponent(result_resolve_path[i],"dir"))
  60
  61             try:
  62                 obj = self._current_context.resolve(_context_name)
  63                 self._current_context = obj._narrow(CosNaming.NamingContext)
  64             except CosNaming.NamingContext.NotFound, ex:
  65                 _not_exist = 1
  66             except CosNaming.NamingContext.InvalidName, ex:
  67                 MESSAGE ( "Register : CosNaming.NamingContext.InvalidName" )
  68             except CosNaming.NamingContext.CannotProceed, ex:
  69                 MESSAGE ( "Register : CosNaming.NamingContext.CannotProceed" )
  70             except CORBA.COMM_FAILURE, ex:
  71                 MESSAGE ( "Register : CORBA.COMM_FAILURE" )
  72
  73             if _not_exist:
  74                 # at least one context of the complete path is not created, we had
  75                 # to create it or them
  76                 _context_name = []
  77                 for i in range(len(result_resolve_path)-1):
  78                     _context_name = [CosNaming.NameComponent(result_resolve_path[i],"dir")]
  79
  80                     try:
  81                         obj = self._current_context.resolve(_context_name)
  82                         self._current_context = obj._narrow(CosNaming.NamingContext)
  83                     except CosNaming.NamingContext.NotFound, ex:
  84                         #This context is not created. It will be done
  85                         self._current_context = self._current_context.bind_new_context(_context_name)
  86
  87         #The current directory is now the directory where the object should
  88         #be recorded
  89
  90         _context_name = [CosNaming.NameComponent(result_resolve_path[len(result_resolve_path)-1],"object")]
  91         try:
  92             self._current_context.bind(_context_name,ObjRef)
  93         except CosNaming.NamingContext.NotFound, ex:
  94             MESSAGE ( "Register : CosNaming.NamingContext.NotFound" )
  95         except CosNaming.NamingContext.InvalidName, ex:
  96             MESSAGE ( "Register : CosNaming.NamingContext.InvalidName" )
  97         except CosNaming.NamingContext.CannotProceed, ex:
  98             MESSAGE ( "Register : CosNaming.NamingContext.CannotProceed" )
  99         except CosNaming.NamingContext.AlreadyBound, ex:
 100             MESSAGE ( "Register : CosNaming.NamingContext.AlreadyBound, object will be rebind" )
 101             self._current_context.rebind(_context_name,ObjRef)
 102         except CORBA.COMM_FAILURE, ex:
 103             MESSAGE ( "Register : CORBA.COMM_FAILURE" )
 104
 105
 106     #-------------------------------------------------------------------------
 107     def Resolve(self, Path):
 108         MESSAGE ( "SALOME_NamingServicePy_i::Resolve" )
 109         path_list = list(Path)
 110         if path_list[0]=='/':
 111             self._current_context = self._root_context
 112             #delete first '/' before split
 113             Path=Path[1:]
 114
 115         result_resolve_path = split(Path,'/')
 116         _context_name=[]
 117         for i in range(len(result_resolve_path)-1):
 118             _context_name.append(CosNaming.NameComponent(result_resolve_path[i],"dir"))
 119         _context_name.append(CosNaming.NameComponent(result_resolve_path[len(result_resolve_path)-1],"object"))
 120         try:
 121             self._obj = self._current_context.resolve(_context_name)
 122         except CosNaming.NamingContext.NotFound, ex:
 123             MESSAGE ( "Resolve : CosNaming.NamingContext.NotFound" )
 124             self._obj = None
 125         except CosNaming.NamingContext.InvalidName, ex:
 126             MESSAGE ( "Resolve : CosNaming.NamingContext.InvalidName" )
 127             self._obj = None
 128         except CosNaming.NamingContext.CannotProceed, ex:
 129             MESSAGE ( "Resolve : CosNaming.NamingContext.CannotProceed" )
 130             self._obj = None
 131         except CORBA.COMM_FAILURE, ex:
 132             MESSAGE ( "Resolve : CORBA.COMM_FAILURE" )
 133             self._obj = None
 134         return self._obj
 135
 136
 137
 138     #-------------------------------------------------------------------------
 139     def Create_Directory(self,ObjRef, Path):
 140         MESSAGE ( "SALOME_NamingServicePy_i::Create_Directory" )
 141         _not_exist = 0
 142         path_list = list(Path)
 143         if path_list[0]=='/':
 144             self._current_context = self._root_context
 145             #delete first '/' before split
 146             Path=Path[1:]
 147
 148         result_resolve_path = split(Path,'/')
 149         _context_name = []
 150         for i in range(len(result_resolve_path)):
 151             _context_name[CosNaming.NameComponent(result_resolve_path[i],"dir")]
 152             try:
 153                 obj = self._current_context.resolve(_context_name)
 154                 self._current_context = obj._narrow(CosNaming.NamingContext)
 155             except CosNaming.NamingContext.NotFound, ex:
 156                 self._current_context = self._current_context.bind_new_context(_context_name)
 157             except CosNaming.NamingContext.InvalidName, ex:
 158                 MESSAGE ( "Create_Directory : CosNaming.NamingContext.InvalidName" )
 159             except CosNaming.NamingContext.CannotProceed, ex:
 160                 MESSAGE ( "Create_Directory : CosNaming.NamingContext.CannotProceed" )
 161             except CORBA.COMM_FAILURE, ex:
 162                 MESSAGE ( "Create_Directory : CORBA.COMM_FAILURE" )
 163
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