Hi Bill, A simpler suggestion, assuming you need to test for the existence of just one particular field: rather than adding a field containing a list of all indexed fields for a particular document, as Karsten suggested, you could just add a field with a constant value when the field you want to test for is present for a particular document.
For example, if "foo" is a field you want to test for, and a document contains: foo:bar you could add a new field "foo.present", with a constant value, to the document: foo.present:true and then when querying: +foo.present:true Steve On 08/18/2008 at 11:45 AM, Karsten F. wrote: > Hi Bill, > > you should not use prefix-query (XXXX*), because in first > step lucene would generate a list of all terms in this field, > and than search for all this terms. Which is senceless. > > I would suggest to insert a new field "myFields" which > contains as value the names of all fields for this document. > So instead of > +foo:XXXX* > you would search for > +myFields:foo > > This would be very fast. > > Best regards > > Karsten > > Bill.Chesky wrote: > > > > Hello, > > > > I am creating fields for documents like this: > > > > String name = ... > > > > String value = ... > > > > doc.add(new Field(name, value, Field.Store.NO, Field.Index.UN_TOKENIZED)); > > ... > > > > One thing I tried is to change my field creation statement like this: > > > > doc.add(new Field(name, "XXXX" + value, Field.Store.NO, > > Field.Index.UN_TOKENIZED)); > > > > then do a query like this: > > > > > > +foo:XXXX* > > > > -- View this message in context: > http://www.nabble.com/Testing-for-field-existence-tp19032939p1 > 9034359.html Sent from the Lucene - Java Users mailing list archive at > Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
