Hi,
Thank you for your response, BJ, Richard, and Clement.
What I intended to realize ( in other words, what we need to realize)
includes the following case:
-----------
Case1. Set service properties when a service "com.acme.serviceA" is
registered either in the Component XML or in other ways.
Equivalent to the following code:
ServiceA obj = new ServiceAImpl();
Dictionary prop = new Dictionary();
prop.put(key1,value1);
prop.put(key2,value2);
serviceRegistration=bundleContext.registerService("ServiceA",obj,prop);
Case2. Modify service properties of the registered service,
either in the Component XML or in other ways.
Equivalent to the following code:
Dictionary newProp = new Dictionary();
newProp.put(key,value);
serviceRegistration.setProperties();
----------
Based on BJ's comment, I tried to implement some bundles using
Declarative service (Equinox Impl.). In the result, I found that
- Writing properties and property elements in a component XML enables to
realize Case 1 internaly.
- In addition, ConfigurationAdmin can be used to modify service
properties after registration (that realizes Case2) externally.
# As written in 112.6 Componant Properties.
I have not used iPOJO yet, but I hope I'll try in near future.
I appreciate your help !
---------------------
NTT Cyber Solutions Laboratories
Ikuo YAMASAKI
E-mail: [EMAIL PROTECTED]
TEL +81-46-859-8537 FAX +81-46-855-1282
On Sun, 15 Jun 2008 20:17:10 +0200
"Clement Escoffier" <[EMAIL PROTECTED]> wrote:
Clement> Hi,
Clement>
Clement> About iPOJO, you can specify the service properties that you want to
publish
Clement> in the <provides> element
Clement> (http://felix.apache.org/site/providing-osgi-services.html).
Clement> In addition, iPOJO allows you to update "transparently" property
values from
Clement> the code itself.
Clement>
Clement> For example, an instance of a component type with the following
metadata
Clement> will publish a service (published interfaces are computed
automatically),
Clement> and will publish the "your.props" property.
Clement> <provides>
Clement> <property field="yourfield" name="your.props"/>
Clement> </provides>
Clement> This property is attached to the "yourfield" member. So, when you
assign a
Clement> new value to this field, the service registration will be updated
Clement> automatically.
Clement>
Clement>
Clement> Clement
Clement>
Clement> > -----Message d'origine-----
Clement> > De?: [EMAIL PROTECTED] [mailto:osgi-dev-
Clement> > [EMAIL PROTECTED] De la part de Richard S. Hall
Clement> > Envoy鬆: jeudi 12 juin 2008 11:28
Clement> > タ?: OSGi Developer Mail List
Clement> > Objet?: Re: [osgi-dev] Setting Service Properties in DS and iPOJO
Clement> >
Clement> > Ikuo Yamasaki wrote:
Clement> > > Hi, OSGi Experts
Clement> > >
Clement> > > It seems to me that, in OSGi, it would be important to decouple a
Clement> > > service object and the service properties when registering a
service
Clement> > in
Clement> > > order to increasie re-usability of components by adopting some
Clement> > > declarative ways.
Clement> > >
Clement> > > I wonder if it is possible to set service properties when
registering
Clement> > a
Clement> > > service using Declarative Service (and to filter a service using
Clement> > service
Clement> > > properties LDAP fiter when getting a service). As far as I read the
Clement> > spec,
Clement> > > it is not possible.
Clement> > >
Clement> > > How about in the case using iPOJO ?
Clement> > >
Clement> >
Clement> > I am not sure if I totally understand the question, do you want the
Clement> > component to set the properties or for them to be set externally. For
Clement> > the external case, as BJ said, the component properties can be used
to
Clement> > set them externally, which is true for DS or iPOJO. For the internal
Clement> > case, you can do this in iPOJO too, with service properties.
Clement> >
Clement> > -> richard
Clement> >
Clement> > > Best regards,
Clement> > >
Clement> > > ---------------------
Clement> > > NTT Cyber Solutions Laboratories
Clement> > >
Clement> > > Ikuo YAMASAKI
Clement> > > E-mail: [EMAIL PROTECTED]
Clement> > > TEL +81-46-859-8537 FAX +81-46-855-1282
Clement> > >
Clement> > >
Clement> > > _______________________________________________
Clement> > > OSGi Developer Mail List
Clement> > > [email protected]
Clement> > > https://mail.osgi.org/mailman/listinfo/osgi-dev
Clement> > >
Clement> > _______________________________________________
Clement> > OSGi Developer Mail List
Clement> > [email protected]
Clement> > https://mail.osgi.org/mailman/listinfo/osgi-dev
Clement>
Clement>
Clement> _______________________________________________
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Clement> [email protected]
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Clement>
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