src/NamingService/SALOME_NamingServicePy.py

   1 #! /usr/bin/env python
   2 #
   3 #  SALOME NamingService : wrapping NamingService services
   4 #
   5 #  Copyright (C) 2003  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
   6 #  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
   7 #
   8 #  This library is free software; you can redistribute it and/or
   9 #  modify it under the terms of the GNU Lesser General Public
  10 #  License as published by the Free Software Foundation; either
  11 #  version 2.1 of the License.
  12 #
  13 #  This library is distributed in the hope that it will be useful,
  14 #  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 #  Lesser General Public License for more details.
  17 #
  18 #  You should have received a copy of the GNU Lesser General Public
  19 #  License along with this library; if not, write to the Free Software
  20 #  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21 #
  22 #  See http://www.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
  23 #
  24 #
  25 #
  26 #  File   : SALOME_NamingServicePy.py
  27 #  Author : Estelle Deville, CEA
  28 #  Module : SALOME
  29 #  $Header$
  30
  31 import sys
  32 from omniORB import CORBA
  33 import CosNaming
  34 from string import *
  35
  36 from SALOME_utilities import *
  37 #=============================================================================
  38
  39 class SALOME_NamingServicePy_i:
  40     _orb = None
  41     _root_context=None
  42     _current_context=None
  43     _obj=None
  44
  45     #-------------------------------------------------------------------------
  46
  47     def __init__(self, orb):
  48         MESSAGE ( "SALOME_NamingServicePy_i::__init__" )
  49         self._orb = orb
  50         # initialize root context and current context
  51         obj =self._orb.resolve_initial_references("NameService")
  52         self._root_context =obj._narrow(CosNaming.NamingContext)
  53         self._current_context = self._root_context
  54
  55
  56         if self._root_context is None :
  57             MESSAGE ( "Name Service Reference is invalid" )
  58             sys.exit(1)
  59
  60     #-------------------------------------------------------------------------
  61     def Register(self,ObjRef, Path):
  62         MESSAGE ( "SALOME_NamingServicePy_i::Register" )
  63         _not_exist = 0
  64         path_list = list(Path)
  65         if path_list[0]=='/':
  66             self._current_context = self._root_context
  67             #delete first '/' before split
  68             Path=Path[1:]
  69
  70         result_resolve_path = split(Path,'/')
  71         if len(result_resolve_path)>1:
  72             # A directory is treated (not only an object name)
  73             # We had to test if the directory where ObjRef should be recorded
  74             # is already done
  75             # If not, the new context has to be created
  76             _context_name = []
  77             for i in range(len(result_resolve_path)-1):
  78                 _context_name.append(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                 _not_exist = 1
  85             except CosNaming.NamingContext.InvalidName, ex:
  86                 MESSAGE ( "Register : CosNaming.NamingContext.InvalidName" )
  87             except CosNaming.NamingContext.CannotProceed, ex:
  88                 MESSAGE ( "Register : CosNaming.NamingContext.CannotProceed" )
  89             except CORBA.COMM_FAILURE, ex:
  90                 MESSAGE ( "Register : CORBA.COMM_FAILURE" )
  91
  92             if _not_exist:
  93                 # at least one context of the complete path is not created, we had
  94                 # to create it or them
  95                 _context_name = []
  96                 for i in range(len(result_resolve_path)-1):
  97                     _context_name = [CosNaming.NameComponent(result_resolve_path[i],"dir")]
  98
  99                     try:
 100                         obj = self._current_context.resolve(_context_name)
 101                         self._current_context = obj._narrow(CosNaming.NamingContext)
 102                     except CosNaming.NamingContext.NotFound, ex:
 103                         #This context is not created. It will be done
 104                         self._current_context = self._current_context.bind_new_context(_context_name)
 105
 106         #The current directory is now the directory where the object should
 107         #be recorded
 108
 109         _context_name = [CosNaming.NameComponent(result_resolve_path[len(result_resolve_path)-1],"object")]
 110         try:
 111             self._current_context.bind(_context_name,ObjRef)
 112         except CosNaming.NamingContext.NotFound, ex:
 113             MESSAGE ( "Register : CosNaming.NamingContext.NotFound" )
 114         except CosNaming.NamingContext.InvalidName, ex:
 115             MESSAGE ( "Register : CosNaming.NamingContext.InvalidName" )
 116         except CosNaming.NamingContext.CannotProceed, ex:
 117             MESSAGE ( "Register : CosNaming.NamingContext.CannotProceed" )
 118         except CosNaming.NamingContext.AlreadyBound, ex:
 119             MESSAGE ( "Register : CosNaming.NamingContext.AlreadyBound, object will be rebind" )
 120             self._current_context.rebind(_context_name,ObjRef)
 121         except CORBA.COMM_FAILURE, ex:
 122             MESSAGE ( "Register : CORBA.COMM_FAILURE" )
 123
 124
 125     #-------------------------------------------------------------------------
 126     def Resolve(self, Path):
 127         MESSAGE ( "SALOME_NamingServicePy_i::Resolve" )
 128         path_list = list(Path)
 129         if path_list[0]=='/':
 130             self._current_context = self._root_context
 131             #delete first '/' before split
 132             Path=Path[1:]
 133
 134         result_resolve_path = split(Path,'/')
 135         _context_name=[]
 136         for i in range(len(result_resolve_path)-1):
 137             _context_name.append(CosNaming.NameComponent(result_resolve_path[i],"dir"))
 138         _context_name.append(CosNaming.NameComponent(result_resolve_path[len(result_resolve_path)-1],"object"))
 139         try:
 140             self._obj = self._current_context.resolve(_context_name)
 141         except CosNaming.NamingContext.NotFound, ex:
 142             MESSAGE ( "Resolve : CosNaming.NamingContext.NotFound" )
 143             self._obj = None
 144         except CosNaming.NamingContext.InvalidName, ex:
 145             MESSAGE ( "Resolve : CosNaming.NamingContext.InvalidName" )
 146             self._obj = None
 147         except CosNaming.NamingContext.CannotProceed, ex:
 148             MESSAGE ( "Resolve : CosNaming.NamingContext.CannotProceed" )
 149             self._obj = None
 150         except CORBA.COMM_FAILURE, ex:
 151             MESSAGE ( "Resolve : CORBA.COMM_FAILURE" )
 152             self._obj = None
 153         return self._obj
 154
 155
 156
 157     #-------------------------------------------------------------------------
 158     def Create_Directory(self,ObjRef, Path):
 159         MESSAGE ( "SALOME_NamingServicePy_i::Create_Directory" )
 160         _not_exist = 0
 161         path_list = list(Path)
 162         if path_list[0]=='/':
 163             self._current_context = self._root_context
 164             #delete first '/' before split
 165             Path=Path[1:]
 166
 167         result_resolve_path = split(Path,'/')
 168         _context_name = []
 169         for i in range(len(result_resolve_path)):
 170             _context_name[CosNaming.NameComponent(result_resolve_path[i],"dir")]
 171             try:
 172                 obj = self._current_context.resolve(_context_name)
 173                 self._current_context = obj._narrow(CosNaming.NamingContext)
 174             except CosNaming.NamingContext.NotFound, ex:
 175                 self._current_context = self._current_context.bind_new_context(_context_name)
 176             except CosNaming.NamingContext.InvalidName, ex:
 177                 MESSAGE ( "Create_Directory : CosNaming.NamingContext.InvalidName" )
 178             except CosNaming.NamingContext.CannotProceed, ex:
 179                 MESSAGE ( "Create_Directory : CosNaming.NamingContext.CannotProceed" )
 180             except CORBA.COMM_FAILURE, ex:
 181                 MESSAGE ( "Create_Directory : CORBA.COMM_FAILURE" )
 182
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