Le 15-déc.-08 à 13:09, Zender00 a écrit :
in my opinion it is possible to use a reader and writer simultanesously on the same index. In my already working lucene class, I use they are both openall the time.
mmmh...
But this isnt the reason for my exception. It seems that lucene cannothandle my singleton. How did you implement your singleton with lucene? Whichlucene version?
2.3.1, source code APL and GPL at: http://svn.activemath.org/intergeo/Platform/SearchI2G/index/ in another project, this was used with Lucene 2.0. paul
polx wrote:We use singletons all the time, Just be careful that are writer and a reader cannot be opened simultaneously on the same index. Either you write or your read (and delete). paul Le 15-déc.-08 à 12:06, Zender00 a écrit :I extend my original post: How is it possible to use lucene in 2 diffent classes / objects, if I dont want to use static methods/variables? (one object read/writer, the other is read only) Kind regards, D. Penning Zender00 wrote:Hi, I tried to implement a singleton pattern for my already working lucene object. But there is a strange error when I tried to access the instance. When my Singleton GetInstance() method is executed for the first time it creates a new instance of my lucene object. There are some member variables in this object like an IndexWriter and IndexReader. These objects are created in the constructor and I can access them directly in the constructor successfully. GetInstance() now returns this lucene object and I have to execute some operations on it. But the IndexWriter seems to be closed meanwhile and I got the exception: "org.apache.lucene.store.AlreadyClosed Exception: this IndexWriter is closed" when my object tries to writer some documents. How could this happen? Isn't it possible to use lucene with a singleton-pattern? Kind regards, D. Penning-- View this message in context: http://www.nabble.com/Singleton-and-Lucene%3A-org.apache.lucene.store.AlreadyClosed-tp20983056p21011945.htmlSent from the Lucene - Java Users mailing list archive at Nabble.com.--------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org-- View this message in context: http://www.nabble.com/Singleton-and-Lucene%3A-org.apache.lucene.store.AlreadyClosed-tp20983056p21012798.html Sent from the Lucene - Java Users mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
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