Yes, I am aware of and using SolrJ and EmbeddedSolrServer. I want to use multiple Solr indices and I was doing it by creating multiple instances of EmbeddedSolrServer. For each EmbeddedSolrServer, I was creating a new SolrCore by creating new IndexSchema and SolrConfig objects. It was working for me and I never bothered to use MultiCore.
Now, it seems that a lot has changed in the last few weeks and this method is not going to work well. I understand that I should use a CoreContainer to manage all the cores and then create the EmbeddedSolrServers by using the CoreContainer to get the corresponding core. What I cannot figure out is how to create and register the SolrCores. In an earlier reply to this thread, Henri has provided some code which helps a lot in understanding how these classes (SolrCore, CoreDescriptor, CoreContainer) are related to each other. I should be able to take it up from there. Any further suggestions / comments would be most welcome. Thanks, Nikhil PS: http://people.apache.org/builds/lucene/solr/nightly/ is no longer updated daily, any idea what happened ? ----- Original Message ---- From: Shalin Shekhar Mangar <[EMAIL PROTECTED]> To: solr-user@lucene.apache.org Sent: Thursday, 28 August, 2008 6:30:16 PM Subject: Re: CoreDescriptor explanation and possible bug Hi Nikhil, Can you please describe your use-case? Are you aware of EmbeddedSolrServer? http://wiki.apache.org/solr/Solrj On Thu, Aug 28, 2008 at 6:12 PM, Nikhil Chhaochharia <[EMAIL PROTECTED]>wrote: > I went through the javadocs for the CoreContainer and CoreDescriptor > classes (20th-Aug nightly, the latest I could find). The steps for creating > a SolrCore now appear to be: (Note for the benefit of those who might > stumble upon this through a websearch - this is not a HOWTO but my best > guess which may not be correct) > > 1. CoreContainer.Initializer.setSolrConfigFilename("path/solrconfig.xml") > 2. cc = CoreContainer.Initializer.initialize() > 3. cd = new CoreDescriptor(cc, "core01", "path/solrHome/for/core01") > 4. SolrCore sc = cc.create(cd) > > Is this correct? > > > To specify my problem in another way, I have a solrconfig.xml but no > schema.xml. I create a IndexSchema object at runtime. I want to now get a > SolrCore object. > > Thanks, > Nikhil > > > > > > ----- Original Message ---- > From: Henrib <[EMAIL PROTECTED]> > To: solr-user@lucene.apache.org > Sent: Thursday, 28 August, 2008 5:23:48 PM > Subject: Re: CoreDescriptor explanation and possible bug > > > Hi, > It is likely to be related to how you initialize Solr & create your > SolrCore; there has been a few changes to ensure there is always a > CoreContainer created which (as its name stands), holds a reference to all > created SolrCore. > There is a CoreContainer.Initializer class that allows to easily create > that > CoreContainer (even if you don't have a solr.xml). > Hope this helps, > Henri > > > > Nikhil Chhaochharia wrote: > > > > Hi, > > > > I have been using nightly builds of Solr 1.3 with SolrJ for some time > now. > > I upgraded the Solr jars from the 14-Aug nightly and my program would not > > compile. I found that SolrCore constructor needed a new parameter > > CoreDescriptor. I passed null and it worked fine. > > > > I then upgraded to the Solr jars from the 20th-Aug nightly and it started > > throwing NullPointerExceptions. My guess is that the addition of the > > method SolrCore.getStatistics() which has the line "lst.add("aliases", > > getCoreDescriptor().getCoreContainer().getCoreNames(this));" throws the > > NPE. > > > > I searched the wiki and there is no mention of CoreDescriptor there. > > Could somebody please explain what CoreDescriptor is all about and how it > > is supposed to be used? > > > > Thanks, > > Nikhil > > > > > > > > -- > View this message in context: > http://www.nabble.com/CoreDescriptor-explanation-and-possible-bug-tp19197004p19198965.html > Sent from the Solr - User mailing list archive at Nabble.com. > -- Regards, Shalin Shekhar Mangar.
