The federated search engine searches other SRW/SRU databases. So, each of those DSpace instances would need to expose an SRW/SRU interface. Then, a simple configuration file lists the URLs of the databases to be searched.
Ralph > -----Original Message----- > From: Mr Havercamp [mailto:mrhaverc...@gmail.com] > Sent: Wednesday, February 11, 2009 9:39 AM > To: LeVan,Ralph > Cc: Mark H. Wood; dspace-tech@lists.sourceforge.net > Subject: Re: [Dspace-tech] Federating a number of DSpace instances > > I'd be very interested in trying this out. How would one search > multiple > DSpace databases on multiple machines. Would this involve exposing the > Postgresql databases to the internet? > > Btw, I will get the SRW/U documentation I put together to you as soon > as > possible. > > Cheers > > > Hayden > > LeVan,Ralph wrote: > > I have an SRU database implementation that does federated searching. > It > > is very simple. It exposes a single SRU database and a configuration > > file lists the other SRU databases to be searched. The results are > > returned in the order of the databases listed in the configuration > file > > (as I said, very simple). > > > > I use the federated search engine in production here at OCLC for our > > Identities database > (http://worldcat.org/identities/search/Identities). > > Under the covers, that database searches 4 other databases. > > > > The code is available as Open Source, but I haven't had time to get > it > > up on my Google Code site (http://code.google.com/p/oclcsrw/). I > > believe I can find my documentation from my old CVS site and would be > > glad to share source and binary jars if anyone is interested in > trying > > them. I'd be glad to work with someone on improving the code if they > > wanted to add something like ranking to it. > > > > Ralph > > > > > >> -----Original Message----- > >> From: Mark H. Wood [mailto:mw...@iupui.edu] > >> Sent: Wednesday, February 11, 2009 8:29 AM > >> To: dspace-tech@lists.sourceforge.net > >> Subject: Re: [Dspace-tech] Federating a number of DSpace instances > >> > >> On Wed, Feb 11, 2009 at 07:19:06AM -0500, John Preston wrote: > >> > >>> The federation that I'm thinking of is for searching. > >>> > >> Note that this is a special case of the more general problem: my > >> institution or consortium operates a number of different digital > >> document repositories of various types, and I need to make it > possible > >> to search across them all with (from the user's POV) one query. > >> Sounds like what SRU was made for. I hope so, because that's what > >> > > I've > > > >> been considering to meet a similar requirement. There's not even a > >> plan yet, though, let alone code. > >> > >> > >>> It would be nice for any of the DSpace instances to auto magically > >>> discover who belongs to the federation and should be searched. > >>> > >> Have each register itself in some sort of directory service. The > >> search front-end can then first search the directory to discover > >> participating repositories, or just walk the membership of a group > or > >> the content of a single container if you want to have multiple > >> repository 'cliques'. > >> > >> -- > >> Mark H. Wood, Lead System Programmer mw...@iupui.edu > >> Friends don't let friends publish revisable-form documents. > >> > > > > > > --------------------------------------------------------------------- > --------- > > Create and Deploy Rich Internet Apps outside the browser with > Adobe(R)AIR(TM) > > software. With Adobe AIR, Ajax developers can use existing skills and > code to > > build responsive, highly engaging applications that combine the power > of local > > resources and data with the reach of the web. Download the Adobe AIR > SDK and > > Ajax docs to start building applications today- > http://p.sf.net/sfu/adobe-com > > _______________________________________________ > > DSpace-tech mailing list > > DSpace-tech@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/dspace-tech > > > ------------------------------------------------------------------------------ Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) software. With Adobe AIR, Ajax developers can use existing skills and code to build responsive, highly engaging applications that combine the power of local resources and data with the reach of the web. Download the Adobe AIR SDK and Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com _______________________________________________ DSpace-tech mailing list DSpace-tech@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dspace-tech
