On 11/22/06, Tabish F. Mufti <[EMAIL PROTECTED]> wrote:
On 11/22/06, Stephan Bergmann <[EMAIL PROTECTED]> wrote:
>
> Tabish F. Mufti wrote:
> [...]
> > # compile
> > idlc -C -I. -I${SDK_DIR}/idl -O${WorkDir} theSentence.idl
> > idlc -C -I. -I${SDK_DIR}/idl -O${WorkDir} XSentence.idl
> >
> > # create registory database (.rdb)
> > regmerge ${WorkDir}/ex_comp.rdb /UCR ${WorkDir}/theSentence.urd
> > regmerge ${WorkDir}/ex_comp.rdb /UCR ${WorkDir}/XSentence.urd
> >
> > # view a registry database
> > #regview ${WorkDir}/ex_comp.rdb
> >
> > # generate java souce file for new types from rdb
> > javamaker -BUCR -nD \
> > -Tcom.sun.star.ex.comp.XSentence \
> > ${OOo_DIR}/program/types.rdb \
> > -O${WorkDir} \
> > ${WorkDir}/ex_comp.rd
> >
> > I had all the above but there was a slight mistake somewhere. Anywayz
> it
> > compiled & packaged was deployed.
> >
> > Now I get an exception on this line:
> >
> > com.sun.star.ex.comp.XSentence sentence =
> > com.sun.star.ex.comp.theSentence.get(xContext);
> >
> > In queryDispatch in ProtocolHandler: myInput:
> > com.sun.star.uno.DeploymentException : component context fails to
> supply
> > singleton com.sun.star.ex.comp.theSentence of type
> > com.sun.star.ex.comp.XSentence
> > at com.sun.star.ex.comp.theSentence.get(Unknown Source)
> > at
> com.sun.star.ex.comp.SentenceProtocolHandler$OwnDispatch.dispatch
> > (SentenceProtocolHandler.java:129)
> >
>
> OK, I see your problem. Singletons (and services) have three parts:
>
> First, you need a UNOIDL file containing the singleton's "declaration"
> (i.e., containing a line like "singleton theSentence: XSentence;", as
> your theSentence.idl). From that, javamaker creates a helper class
> (theSentence.class) that allows client code to obtain the singleton
> instance at runtime, *if certain conditions are met.*
>
> Second, there needs to be a "definition" of the singleton (i.e., for
> example a Java class you provide that implements the XSentence interface
> and also provides code to register the singleton implementation with a
> component context). How the necessary code to register a *service*
> implementation looks like is described in the DevGuide
> (< http://api.openoffice.org/docs/DevelopersGuide/DevelopersGuide.pdf>),
> sections 4.5.3--4.5.5); however, a description of the necessary code for
> a *singleton* implementation seems to be missing. [*]
>
> Third (and this is where the "certain conditions" from above are
> provided), a call to theSentence.get(componentContext) will only succeed
> if componentContext is a component context in which the "definition" of
> the singleton (the Java class you need to provide) has been registered.
> How this registration works depends on the nature of the component
> context:
>
> - If the component context is a binary UNO one from the OOo installation
> (e.g., obtained from com.sun.star.comp.helper.Bootstrap.bootstrap or
>
> com.sun.star.comp.helper.Bootstrap.defaultBootstrap_InitialComponentContext
> ),
> the singleton must be registered in the OOo services.rdb (for example
> via regcomp, see the DevGuide for details).
>
> - If the component context is a pure Java UNO one ( e.g., obtained from
> com.sun.star.comp.helper.Bootstrap.createInitialComponentContext), you
> have to register the singleton directly at the component context "by
> hand." Again, how this is done seems not to be well documented. [**]
>
> Please allow me some more time to come back with example code that sheds
> more light on how [*] and [**] actually work.
>
> -Stephan
>
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Ok, what I can request to you write now is to make a simple HelloWorld
singleton. e.g. a singleton having a function which when called increments
a counter inside it and return the value. I think we'll need two files for
this (something like XSentence.idl and an implementation of XSentence)
Together with all the above, make the Build.sh file which will be used to
package & deploy that component. And put all of this on a wiki. If you need
any kind of help, let me know although I'm pretty new to openoffice
development.
Thanks
Is there any update on the singleton.
