1) Good catch and just in time!
We are just finalizing a refresh of the R4 specs to collect up the errata
and have added this to the list of fixes.
The token production will be changed to:
token ::= ( alphanum | ’_’ | ’-’ )+
The Event.validateToken method will be fixed to accept this grammar. The
method was originally written to the R3 token grammar. Late in the R4
cycle we updated the token grammar in the spec but missed the + and also
the code in Event.
2) foo/bar/* will match foo/bar/xyz but will not match foo/bar or
foo/barbar. It will match any topic that startsWith("foo/bar/").
If you want your handler to match foo/bar and foo/bar/*, then set both
topics in the event.topics property: new String[] {"foo/bar", "foo/bar/*"}
BJ Hargrave
Senior Technical Staff Member, IBM
OSGi Fellow and CTO of the OSGi Alliance
[EMAIL PROTECTED]
Office: +1 407 849 9117 Mobile: +1 386 848 3788
Michaël OULLION <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
07/11/2006 04:11 AM
Please respond to
[EMAIL PROTECTED]; Please respond to
OSGi Developer Mail List <osgi-dev@bundles.osgi.org>
To
osgi-dev@bundles.osgi.org
cc
Subject
[osgi-dev] Questions about Event and topics
Hi,
I already try to send the first question but my subscribtion on the
mailling list failed so i can't if they are somes responses. Sorry for the
spam.
First Question : I'm working on Event in OSGi and i found some differences
between OSGi R4 specification and org.osgi.compendium.
In OSGI R4 , a topic is defined by : topic ::= token ( ' / ' token ) *
(see Topics 113.3.1 OSGi Compendium)
and a token is : token ::= ( alphanum | ’_’ | ’-’ )* and alphanum ::=
alpha | digit and digit ::= [0..9] and alpha ::= [a..zA..Z]
(see General Syntax Definitions 1.4.2 OSGi Core)
So, we can have a topic with an empty name (due to the * operator in
token's definition ) or a topic begins with '-' or '_' or a digit.
But, in the org.osgi.event.Event code, the validateToken() method is used
to validate a topic. This method invalidate all topics beginning with '_'
or '-' or a digit and also invalidate topics with empty name.
Is it an error ? What "definition" must i respect??? OSGi R4 spec or
org.osgi.event.Event ???
Second question : in Topics handler, when you configure your handler with
"foo/bar/* ", will you receive the event propagate on foo/bar???
Regards,
Oullion Michael,
Student in Adele Team, LSR laboratory, France
_______________________________________________
osgi-dev mailing list
osgi-dev@bundles.osgi.org
http://bundles.osgi.org/mailman/listinfo/osgi-dev
_______________________________________________
osgi-dev mailing list
osgi-dev@bundles.osgi.org
http://bundles.osgi.org/mailman/listinfo/osgi-dev
