Re: [Opensync-devel] what is the difference between....?

[Daniel G. <go...@b1...>]

On Friday 09 July 2010 02:14:17 pm Chris Frey wrote:
> What is the difference between these two blocks of code?
> 
> 
>         OSyncFormatEnv *formatenv1 =
>  osync_plugin_info_get_format_env(info); format =
>  osync_format_env_find_objformat(formatenv1,
>                                                 "xmlformat-event-doc");
>         if( !format ) {
>                 osync_trace(TRACE_ERROR, "%s",
>                         "Failed to find objformat xmlformat-event-doc!");
>                 goto error;
>         }


This one is using the OSyncFormatEnv which has access to all format plugins 
which are available to the OpenSync installation. So it has access to all 
available OSyncObjFormats as well ...

Basically this code seems to check if the xmlformat plugin is installed and 
the xmlformat-event-doc objformat ist available.

> 
> 
> And...
> 
>         OSyncPluginConfig *config = osync_plugin_info_get_config(info);
>         OSyncPluginResource *resource =
>  osync_plugin_config_find_active_resource(config, "event");
> 
>         OSyncList *objformatsinks =
>  osync_plugin_resource_get_objformat_sinks(resource);
> 
>         osync_bool has_format = false;
> 
>         OSyncList *r;
>         for( r = objformatsinks; r ;r = r->next ) {
>                 OSyncObjFormatSink *objformatsink = (OSyncObjFormatSink *)
>  r->data;
> 
>                 if( !strcmp("xmlformat-event-doc",
>  osync_objformat_sink_get_objformat(objformatsink))) { has_format = true;
>                         break;
>                 }
>         }
> 
>         if( !has_format ) {
>                 osync_trace(TRACE_ERROR, "%s",
>                         "Failed to find objformat xmlformat-event-doc!");
>                 goto error;
>         }

This one uses the Plugin configuration (OSyncPluginConfig) which contains a 
resource configuraiton. It checks if there is a "event" resource configured 
which uses the xmlformat-event-doc in the objformat-sink in this plugin/member 
configuration.

So the basic difference is:

 block #1: checks if xmlformat-event-doc is available in this particular 
           installation of OpenSync

 block #2: checks if a plugin/member got configured to provide a <Resource> 
           using xmlformat-event-doc


Hope that helps!

Best Regards,
Daniel

-- 
Daniel Gollub                        Geschaeftsfuehrer: Ralph Dehner
Linux Consultant & Developer         Unternehmenssitz:  Vohburg
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