Text search language field

I'm working on project with some large text areas that will need to be 
searched, and I'm trying to set up an indexed text search field to make 
things a bit smoother.  Only one of the top requirements is that this has 
to be multi-lingual, so I should be using the correct language's text 
search.  The table stores the language the text is in, so in theory this 
should be easy...  But it seems to be a bit more subtle than it first 
appears.  Any ideas on the best way to set this up?

Tables:

Resource:
    "text_element"	text,
    "text_search"	tsvector,
    "language"		char varying(3) references "languages"

languages  (This is 'static' list of ISO 639-3 codes, to make sure 
everything uses the same codes):
    "code" character varying(3) primary key,
    "description" character varying(100)

Trigger (This is my first draft):
create trigger "textsearch_trig" before update or insert
   on "resource" for each row execute procedure
   tsvector_update_trigger_column("text_search", "language", 
"text_element");

The trigger currently throws an error 'column "language" is not of 
regconfig type' whenever I try to use it, and I'm looking for the best way 
to solve that.  The 'simple' solution of 'create text search configuration 
eng ( copy = pg_catalog.english );' didn't work.  Before I start into a 
long exploration into why and what should be done about it, I thought I'd 
seek wisdom.  ;)

Daniel T. Staal

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