Hi Hoss, On 11/29/09 12:22 PM, "Chris Hostetter" <hossman_luc...@fucit.org> wrote:
> that would tell them if a field name is currently in use, but not what to > do about it if it is already in use -- FieldType classes shouldn't need > complicated hueristics to figure out somethign the user could configure. > Maybe, but something needs that logic. Think relational database -- if you try and add a field to a schema (e.g., using some DBMS client GUI or vanilla command line SQL) where that name already exists, then you get a SQL exception. Similarly, SOLR should support such concepts. Maybe it doesn't go in FieldType (though I'm not convinced of that since I don't think it's as complicated as is implied), but at the very least it should go into IndexSchema. > Even if the FieldType's where crazy smart -- it wouldn't provide any > future-proofing. a FieldType could inspect the schema and see that > certain fieldnames aren't in use right now, but then i could change my > schema and add a field name that *does* collide with something it > previously picked, and now i'm screwed. How are you screwed? If you add a field name that collides then as long as the FieldType checked you'd still be OK? Maybe FieldTypes that support multi-internal fields should have a requirement that they be configured from the schema.xml file themselves, so that the user configuring the entire schema can be made to deal with the namespacing at that level -- then if she messes up the multi-field configuration, it's on them (with the help of SOLR reporting a helpful exception and area in the schema where the collision occurred)... Cheers, Chris ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Chris Mattmann, Ph.D. Senior Computer Scientist NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA Office: 171-266B, Mailstop: 171-246 Email: chris.mattm...@jpl.nasa.gov WWW: http://sunset.usc.edu/~mattmann/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Adjunct Assistant Professor, Computer Science Department University of Southern California, Los Angeles, CA 90089 USA ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
