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[protege-discussion] preloading of Instances in Protege 3.3 (411) ?

Tania Tudorache tudorache at
Tue Jul 3 10:23:10 PDT 2007

Hi Jens,

Did you take a look at the wiki page describing the server and client 
configuration? It also describes the preloading option:

You are not supposed to see anything different in the UI if preloading 
is activated. Preloading means that the client will pre-cache at the 
initialization time a subtree of classes that are most likely to be used 
by the client. This trades off client initialization time to performance 
after start-up. For example, the NCI Thesaurus is a pretty large OWL 
ontology. If there are some users that are most likely to edit the Gene 
class tree (which is huge), then you can preload the Gene subtree on the 
client side, so that when the user clicks in the Gene class tree, 
everything will be fetched from the client cache rather than from the 
server. This makes sense for large ontologies and for cases when the 
network latency is big.


Jens wrote:
> Hi again,
> sorry for my "spamming" of the list today. I have collected several topics
> and I want them sorted out in individual mails.
> My hopefully last question today is, how do I configure preloading of
> Instances in Protege frames. As I use client-server mode, is this preloading
> configured on the server, on the client or both?
> I tried to load instances of class Person and a maximum of 5000 instances with
> these parameters:
> server.client.preload0=Person 
> preload.frame.limit=5000
> Starting the client, it says something about preloading, but it does not do
> anything. Adding the parameters to Protege.lax and/or Files
> have no effect.
> What can I do? system properties on Windows should bei in Protege.lax, right?
> Regards,
> Jens.
> Console-output starting the Protege client:
> --------------------------------------------------------
> CONFIG: Loaded plugin
> CONFIG: Loaded plugin - Basic Wizards
> CONFIG: Loaded plugin - OWL Wizards
> CONFIG: Preloading frame values
> CONFIG: Preloading frame values
> WARNING: Missing map instance: onto_db_tst_ProjectKB_Instance_210578 -- Property
> MapUtil.getMap()
> WARNING: null -- WidgetUtilities.isSuitableExport()
> WARNING: null -- WidgetUtilities.isSuitableExport()
> CONFIG: Preloading frame values
> CONFIG: Preloading frame values
> CONFIG: Preloading frame values
> CONFIG: Preloading frame values
> CONFIG: Preloading frame values
> CONFIG: Preloading frame values
> INFO: Connected to server chat project on server.
> INFO: UI display time = 4 sec
> --------------------------------------------------------
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