Recently we found strange behavior in a query. We use eDismax as the query parser.
This is the query term: 1,3-DIMETHYL-5-(3-PHENYL-ALLYLIDENE)-PYRIMIDINE-2,4,6-TRIONE It should hit one document in our index. It does not. However, if you use the Dismax query parser it does match the record. The problem seems to involve the parenthesis and the dashes. If you escape the dash after the parenthesis it matches 1,3-DIMETHYL-5-(3-PHENYL-ALLYLIDENE)\-PYRIMIDINE-2,4,6-TRIONE I thought that eDismax and Dismax escaped all lucene special characters before passing the query to lucene. Although I also remember reading that + and - can have special significance in a query if preceded with white space. I can find very little documentation on either query parser in how they work. Is this expected behavior or is this a bug? If expected, where can I find documentation? This message and any attachment are confidential and may be privileged or otherwise protected from disclosure. If you are not the intended recipient, you must not copy this message or attachment or disclose the contents to any other person. If you have received this transmission in error, please notify the sender immediately and delete the message and any attachment from your system. Merck KGaA, Darmstadt, Germany and any of its subsidiaries do not accept liability for any omissions or errors in this message which may arise as a result of E-Mail-transmission or for damages resulting from any unauthorized changes of the content of this message and any attachment thereto. Merck KGaA, Darmstadt, Germany and any of its subsidiaries do not guarantee that this message is free of viruses and does not accept liability for any damages caused by any virus transmitted therewith. Click http://www.merckgroup.com/disclaimer to access the German, French, Spanish and Portuguese versions of this disclaimer.
