Re: something like an Index?

You build your own indexes in Ozone any way you want.  

In your example, I'd recommend something along the lines of a TreeMap
inside an Ozone object so it is persistent.  Make Person extend
OzoneRemote so it is a first class persistent object.  Define Index that
extends OzoneObject, and wraps a TreeMap in its impl.  Create two Index
in the database & name them,  one to map id -> Person "id_index", one to
map name -> Person "name_index".  Write a little code to keep them
consistent and that's it.  Use TreeMap methods like submap for qeuries,
throw in some regular expressions for more powerful searching.  

Whatever query methods you need,  make sure to write them as methods on
your Index so the collection traversals and contained object method
invocations all happen inside the server context so they are local calls
and therefore fast. 

~Jimmy



On Sat, 2006-04-15 at 16:08 +0200, Martin Walch wrote:
> Hello,
> 
> I'm new to ozone and also rather new to databases in general.
> For my current project some kind of OODBMS seems to be a good choice.
> However, beside some rather complex structures, I've got also long lists
> of Objects of the same class.
> Concretely: I have got a list of persons with names, addresses, ids and so on.
> I need to find somebody in this list either by name or by id. Both options must work fast.
> So in a RDBMS like e. g. MySQL I would probably create an index for names and one for ids.
> Well, this is no RDBMS.
> 
> How can I implement this in Ozone?
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