Wow Peter! This is exactly what I was thinking of. Any JMX guys have any ideas how we could integrate this?
Bill > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:jboss-development-admin@;lists.sourceforge.net]On Behalf Of Peter > Antman > Sent: Thursday, November 14, 2002 4:12 AM > To: [EMAIL PROTECTED] > Subject: Re: [JBoss-dev] Metadata Service > > > Hi, > have any one of you looked at XmlBlaster? (www.xmlBlaster.org). > > I guess it could really work as a central XmlRepository. XmlBlaster is > an XML based MOM. You publish your XML to it and it will save it in an > Xml DOM tree, even persist it a RDMB or Xincice. > > You can then subscribe to event with an XPath expression (or do a > synchronous get (with an XPath). > > Ok. You can not just subsribe to one element, thats true, but you can > subscribe on a "domain" or "config", say MyMessageDrivenBean and get any > update notifications for that XML config. Or you could do a > get(//x/y/port) (pseudocode!) and get all configs wich contains that > element. There are a lot more to XmlBlaster (I have done the JBoss > integration thats currently is available in XmlBlaster ;.)) > > Well, just a thought. > > //Peter > > On 13 Nov, Bill Burke wrote: > > 1. I'm not talking about a central config file...Components > register their > > XML with this service. MBean, EJB, whatever... > > > > 2. You know what XPATHs are right? If not, look them up. They > are really > > cool. Xerces/Xalan (forget which) support looking up Elements > via XPATHS. > > What's not supported, which we would have to write, would be > the ability to > > register for change notifications via an XPATH. > > > > Other ideas: > > - A redeployed bean, updates the Centralized (in-memory) Xerces XML Doc. > > Services/components registered as listening for changes, recieve > > notification. > > > > - JMX console needs an additional XML editor for MBean > attributes that are > > XML elements. > > > > - This sort of centralized service allows you to query, via > XPATHS, for all > > components that have a "port" attribute for instance. Allows you to do > > global things on configuration when you don't know the actual components > > that have that type of attribute > > > > Another thing about configuration I wanted to have is the concept of > > Configuration Domains. A component would get configuration by > searching a > > set of chained configuration domains. > > > > invocation domain->instance domain->component domain->app server > > domain->cluster domain etc... > > > > So, when a component needs config information, it looks it up > via the chain. > > Any domain in the chain can override a config value. As the chain is > > traversed, if the config info is not there, it searches farther up the > > chain. > > > > This would allow us to have a layered way of obtaining default config > > information, or overriding existing configuration at different levels at > > different times. > > > > Bill > > > > > > > >> -----Original Message----- > >> From: [EMAIL PROTECTED] > >> [mailto:jboss-development-admin@;lists.sourceforge.net]On Behalf Of Matt > >> Munz > >> Sent: Wednesday, November 13, 2002 1:26 PM > >> To: [EMAIL PROTECTED] > >> Subject: RE: [JBoss-dev] Metadata Service > >> > >> > >> Dain, > >> > >> > Meta data for an invocation. > >> > >> I assume you refer here to EJB/servlet invocations. > >> > >> Just out of curiosity, how is that metadata currently stored? > >> > >> - Matt > >> > >> -----Original Message----- > >> From: [EMAIL PROTECTED] > >> [mailto:jboss-development-admin@;lists.sourceforge.net]On Behalf Of Dain > >> Sundstrom > >> Sent: Wednesday, November 13, 2002 1:13 PM > >> To: [EMAIL PROTECTED] > >> Subject: Re: [JBoss-dev] Metadata Service > >> > >> > >> Meta data for an invocation. What are the tx attributes? What is the > >> security manager? What are the required roles? What is the readahead > >> configuration? That kind of data. > >> > >> -dain > >> > >> Matt Munz wrote: > >> > Dain/Bill/Scott, > >> > > >> > Could you clarify this? Metadata for what data? Are you > referring to > >> > MBeanInfo, or something else? > >> > > >> > - Matt > >> > > >> > -----Original Message----- > >> > From: [EMAIL PROTECTED] > >> > [mailto:jboss-development-admin@;lists.sourceforge.net]On > Behalf Of Dain > >> > Sundstrom > >> > Sent: Wednesday, November 13, 2002 12:52 PM > >> > To: [EMAIL PROTECTED] > >> > Subject: Re: [JBoss-dev] Metadata Service > >> > > >> > > >> > Bill Burke wrote: > >> > > >> >>Dain and I were IMing. He said Scott was thinking about a MetaData > >> >>service... > >> >> > >> >>My idea for a MetaData/Configuration service would be the ability to > >> >>register for callbacks based on XPATHS. So, all config of > >> jboss would be > >> >>stored in one big XML Document. Components insert their config > >> there, and > >> >>register for callbacks on this config via XPATHS. So, this > >> config can be > >> >>managed centrally, yet, components can easily be notified with > >> changes via > >> > > >> > a > >> > > >> >>simple mechanism. > >> > > >> > > >> > I didn't know you could do that. What spec/library is this > in? I want > >> > to read it. > >> > > >> > Scott and I were really only talking about use. We need > something like > >> > this for component, application, and domain data, but we > didn't get into > >> > the actually implementation. We just decided to have an > metadata loader > >> > interceptor and a metadata loader interface for the > interceptor to call. > >> > The goal is to create a place to put a good metadata service, but > >> > those details are for another day (one step at a time). > >> > > >> > -dain > >> > > >> > > >> > > >> > ------------------------------------------------------- > >> > This sf.net email is sponsored by: Are you worried about > >> > your web server security? Click here for a FREE Thawte > >> > Apache SSL Guide and answer your Apache SSL security > >> > needs: http://www.gothawte.com/rd523.html > >> > _______________________________________________ > >> > Jboss-development mailing list > >> > [EMAIL PROTECTED] > >> > https://lists.sourceforge.net/lists/listinfo/jboss-development > >> > > >> > > >> > > >> > ------------------------------------------------------- > >> > This sf.net email is sponsored by: Are you worried about > >> > your web server security? Click here for a FREE Thawte > >> > Apache SSL Guide and answer your Apache SSL security > >> > needs: http://www.gothawte.com/rd523.html > >> > _______________________________________________ > >> > Jboss-development mailing list > >> > [EMAIL PROTECTED] > >> > https://lists.sourceforge.net/lists/listinfo/jboss-development > >> > >> > >> -- > >> xxxxxxxxxxxxxxxxxxxxxxxx > >> Dain Sundstrom > >> Chief Architect JBossCMP > >> JBoss Group, LLC > >> xxxxxxxxxxxxxxxxxxxxxxxx > >> > >> > >> > >> ------------------------------------------------------- > >> This sf.net email is sponsored by: Are you worried about > >> your web server security? 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Click here for a FREE Thawte > > Apache SSL Guide and answer your Apache SSL security > > needs: http://www.gothawte.com/rd523.html > > _______________________________________________ > > Jboss-development mailing list > > [EMAIL PROTECTED] > > https://lists.sourceforge.net/lists/listinfo/jboss-development > > -- > ------------------------------------------------------------ > Peter Antman Chief Technology Officer, Development > Technology in Media, Box 34105 100 26 Stockholm > WWW: http://www.tim.se WWW: http://www.backsource.org > Email: [EMAIL PROTECTED] > Phone: +46-(0)8-506 381 11 Mobile: +46-(0)704 20 58 11 > ------------------------------------------------------------ > > > > ------------------------------------------------------- > This sf.net email is sponsored by: To learn the basics of securing > your web site with SSL, click here to get a FREE TRIAL of a Thawte > Server Certificate: http://www.gothawte.com/rd524.html > _______________________________________________ > Jboss-development mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/jboss-development ------------------------------------------------------- This sf.net email is sponsored by: To learn the basics of securing your web site with SSL, click here to get a FREE TRIAL of a Thawte Server Certificate: http://www.gothawte.com/rd524.html _______________________________________________ Jboss-development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
