Hi Marcin, Maybe this link will be helpfull: http://www.javacoffeebreak.com/articles/designpatterns/index.html To me it looks as if it covers all related problems.
Other similar link http://www.javaworld.com/javaworld/jw-04-2003/jw-0425-designpatterns.html http://www.javaworld.com/javaworld/jw-04-2003/jw-0425-designpatterns.html?page=2 At a quick glance at them I also noted the topic of sharing only one instance between different JVM or processes. Maybe you like to check that out as well. Thomas > Hi, > > I'm implementing a class that implements a known OOo service (actually, > several ones, but the important one is XGrammarChecker). The problem is > that the class is instantiated many times in OOo whenever a UI item is > used, and the instances created do not share data. > > So I think I should guarantee that the service is instantiated only once > per OOo instance. As far as I understand, I need to make a singleton > class for this purpose. The docs (if one can call it docs) refer to > writing an IDL spec which is not useful for implementing a known UNO > service, so I think in this case writing IDL is completely superfluous. > All I want from the class is that it's created only once per JVM in OOo > (the code is in Java). What should I do to make my class a one-instance > class? Is it enough to add some registry code to __writeRegistryServiceInfo? > > You can find the whole code in our CVS repo: > > http://languagetool.cvs.sourceforge.net/languagetool/JLanguageTool/src/java/de/danielnaber/languagetool/openoffice/Main.java?view=markup > > Anyway, if there is a better or easier way to share implementation data > of multiple instances, I could use it as well but I think that for > performance purposes, it's wise to have only a single instance of my > service - it's a grammar checker that will be run in the background > thread in Writer, and instantiating the class is somewhat costly. > > Thanks for your advice, and best regards, > Marcin > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
