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Diffstat (limited to 'lib/cosProperty/src/CosPropertyService_PropertiesIterator_impl.erl')
| -rw-r--r-- | lib/cosProperty/src/CosPropertyService_PropertiesIterator_impl.erl | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/lib/cosProperty/src/CosPropertyService_PropertiesIterator_impl.erl b/lib/cosProperty/src/CosPropertyService_PropertiesIterator_impl.erl new file mode 100644 index 0000000000..a7769cea4d --- /dev/null +++ b/lib/cosProperty/src/CosPropertyService_PropertiesIterator_impl.erl @@ -0,0 +1,166 @@ +%%-------------------------------------------------------------------- +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2000-2009. All Rights Reserved. +%% +%% The contents of this file are subject to the Erlang Public License, +%% Version 1.1, (the "License"); you may not use this file except in +%% compliance with the License. You should have received a copy of the +%% Erlang Public License along with this software. If not, it can be +%% retrieved online at http://www.erlang.org/. +%% +%% Software distributed under the License is distributed on an "AS IS" +%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See +%% the License for the specific language governing rights and limitations +%% under the License. +%% +%% %CopyrightEnd% +%% +%% +%%---------------------------------------------------------------------- +%% File : CosPropertyService_PropertiesIterator_impl.erl +%% Description : +%% +%%---------------------------------------------------------------------- +-module('CosPropertyService_PropertiesIterator_impl'). + +%%---------------------------------------------------------------------- +%% Include files +%%---------------------------------------------------------------------- +-include_lib("orber/include/corba.hrl"). +-include_lib("orber/src/orber_iiop.hrl"). +-include("CosPropertyService.hrl"). +-include("cosProperty.hrl"). + + +%%---------------------------------------------------------------------- +%% External exports +%%---------------------------------------------------------------------- +%% Mandatory server functions +-export([init/1, + terminate/2, + code_change/3]). + +-export([reset/1, + next_one/1, + next_n/2, + destroy/1]). + +%%---------------------------------------------------------------------- +%% Internal exports +%%---------------------------------------------------------------------- +-export([ + ]). + +%%---------------------------------------------------------------------- +%% Records +%%---------------------------------------------------------------------- +-record(state, {properties, counter=1, length}). + +%%---------------------------------------------------------------------- +%% Macros +%%---------------------------------------------------------------------- +-define(CreateInitState(L), #state{properties = L, length = length(L)}). +-define(get_Properties(S), S#state.properties). +-define(get_Counter(S), S#state.counter). +-define(get_Length(S), S#state.length). + +-define(set_Properties(S, P), S#state{properties = P}). +-define(set_Counter(S, C), S#state{counter = C}). +-define(set_Length(S, L), S#state{length = L}). + +-define(increment_Counter(S), S#state{counter = S#state.counter+1}). +-define(decrement_Counter(S), S#state{counter = S#state.counter-1}). +-define(addto_Counter(S, N), S#state{counter = S#state.counter+N}). +-define(subfrom_Counter(S, N), S#state{counter = S#state.counter-N}). + + +%%====================================================================== +%% External functions +%%====================================================================== +%%---------------------------------------------------------------------- +%% Function : init/1 +%% Description: Initiates the server +%% Returns : {ok, State} | +%% {ok, State, Timeout} | +%% ignore | +%% {stop, Reason} +%%---------------------------------------------------------------------- +init(Properties) -> + {ok, ?CreateInitState(Properties)}. + +%%---------------------------------------------------------------------- +%% Function : terminate/2 +%% Description: Shutdown the server +%% Returns : any (ignored by gen_server) +%%---------------------------------------------------------------------- +terminate(_Reason, _State) -> + ok. + +%%---------------------------------------------------------------------- +%% Function : code_change/3 +%% Description: Convert process state when code is changed +%% Returns : {ok, NewState} +%%---------------------------------------------------------------------- +code_change(_OldVsn, State, _Extra) -> + {ok, State}. + +%%---------------------------------------------------------------------% +%% Function : reset +%% Arguments : - +%% Description: +%% Returns : {ok, NewState} +%%---------------------------------------------------------------------- +reset(State) -> + {reply, ok, ?set_Counter(State, 1)}. + +%%---------------------------------------------------------------------- +%% Function : next_one +%% Arguments : - +%% Description: +%% Returns : {ok, {bool(), PropertyList}, NewState} +%%---------------------------------------------------------------------- +next_one(State) when ?get_Counter(State) > ?get_Length(State) -> + {reply, {false, + #'CosPropertyService_Property' + {property_name = "", + property_value = any:create(orber_tc:null(), null)}}, + State}; +next_one(State) -> + {reply, {true, lists:nth(?get_Counter(State), ?get_Properties(State))}, + ?set_Counter(State, 1+?get_Counter(State))}. + +%%---------------------------------------------------------------------- +%% Function : next_n +%% Arguments : N - how many properties we should return. +%% Description: +%% Returns : {ok, {bool(), PropertyList}, NewState} +%%---------------------------------------------------------------------- +next_n(State, N) -> + case lists:sublist(?get_Properties(State), + ?get_Counter(State), + N) of + Properties when N+?get_Counter(State) < ?get_Length(State) -> + {reply, {true, Properties}, ?set_Counter(State, N+?get_Counter(State))}; + Properties -> + {reply, {false, Properties}, ?set_Counter(State, ?get_Length(State))} + end. + +%%---------------------------------------------------------------------% +%% Function : destroy +%% Arguments : - +%% Description: Terminate the object +%% Returns : {ok, NewState} +%%---------------------------------------------------------------------- +destroy(State) -> + {stop, normal, ok, State}. + +%%====================================================================== +%% Internal functions +%%===================================================================== + +%%====================================================================== +%% END OF MODULE +%%====================================================================== + |