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https://issues.apache.org/jira/browse/SOLR-161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12473627
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Hoss Man commented on SOLR-161:
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A trailing dash is never meaningful, but should it be striped, escaped, or
treated as an error (assuming the error message is improved)
As for examples of what i'm thinking:
* a regex that escapes '-' if it appears before a sequence of digits
(negative number? or prohibited number?)
* a regex that escapes '"' if it apears at the end of a sequence of digits,
and no
other instance of '"' proceeds it in the string.
(inches? or unterminated phrase query?)
* a regex that strips (or escapes) '-' or '+' characters that are ajacent
only to whitespace
or the start/end tokens of the string
(literals? garbage to be ignored? or malformed mandatory/prohibited
modifiers?)
...basically any of the types of preprocessing i ever considered hardcoding
into dismax, but then decided not to because i was afraid someone would say
"that's not what i want, and there's no way to turn it off"
> Dangling dash causes stack trace
> --------------------------------
>
> Key: SOLR-161
> URL: https://issues.apache.org/jira/browse/SOLR-161
> Project: Solr
> Issue Type: Bug
> Components: search
> Affects Versions: 1.1.0
> Environment: Java 1.5, Tomcat 5.5.17, Fedora Core 4, Intel
> Reporter: Walter Underwood
>
> I'm running tests from our search logs, and we have a query that ends in a
> dash. That caused a stack trace.
> org.apache.lucene.queryParser.ParseException: Cannot parse 'digging for the
> truth -': Encountered "<EOF>" at line 1, column 23.
> Was expecting one of:
> "(" ...
> <QUOTED> ...
> <TERM> ...
> <PREFIXTERM> ...
> <WILDTERM> ...
> "[" ...
> "{" ...
> <NUMBER> ...
>
> at org.apache.lucene.queryParser.QueryParser.parse(QueryParser.java:127)
> at
> org.apache.solr.request.DisMaxRequestHandler.handleRequest(DisMaxRequestHandler.java:272)
> at org.apache.solr.core.SolrCore.execute(SolrCore.java:595)
> at org.apache.solr.servlet.SolrServlet.doGet(SolrServlet.java:92)
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