Hi, The standard lucene/solr parsing is nice but not really flexible. I saw questions and discussion about ANTLR, but unfortunately never a working grammar, so... maybe you find this useful: https://github.com/romanchyla/montysolr/tree/master/src/java/org/apache/lucene/queryParser/iqp/antlr
In the grammar, the parsing is completely abstracted from the Lucene objects, and the parser is not mixed with Java code. At first it produces structures like this: https://svnweb.cern.ch/trac/rcarepo/raw-attachment/wiki/MontySolrQueryParser/index.html But now I have a problem. I don't know if I should use query parsing framework in contrib. It seems that the qParser in contrib can use different parser generators (the default JavaCC, but also ANTLR). But I am confused and I don't understand this new queryParser from contrib. It is really very confusing to me. Is there any benefit in trying to plug the ANTLR tree into it? Because looking at the AST pictures, it seems that with a relatively simple tree walker we could build the same queries as the current standard lucene query parser. And it would be much simpler and flexible. Does it bring something new? I have a feeling I miss something... Many thanks for help, Roman
