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https://issues.apache.org/jira/browse/CASSANDRA-7111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14058013#comment-14058013
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Tyler Hobbs commented on CASSANDRA-7111:
----------------------------------------

I should have noticed these in the first review, but a couple of additional 
changes:
* Since ErrorCollector is the only implementation of ErrorListener, I would 
prefer to just leave out the ErrorListener interface (unless you have plans to 
use it soon)
* For mock test classes like MockToken, you can leave out things like {{/\*\* 
\{\@inheritDoc\} \*/}} javadocs

There's also still a bit of trailing whitespace in ErrorCollector and Cql.g in 
the patch, and the unit tests need to be updated for the whitespace change.

> Include snippet of CQL query near error in SyntaxError messages
> ---------------------------------------------------------------
>
>                 Key: CASSANDRA-7111
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7111
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: API, Tools
>            Reporter: Tyler Hobbs
>            Assignee: Benjamin Lerer
>              Labels: cql
>             Fix For: 2.1.1
>
>         Attachments: CASSANDRA-7111-V2.txt, CASSANDRA-7111.txt
>
>
> When a SyntaxError is returned, including a snippet of the query close to the 
> error would make a lot of error messages easier to understand.  For example, 
> if you did this with the python driver:
> {code}
> session.execute(SELECT * FROM users WHERE username='%s', ['Joe Smith'])
> {code}
> you would wind up with an extra set of single quotes (the driver 
> automatically escapes and quotes input).  If a snippet like {{...WHERE 
> username=''Joe Smith''}} were included in the error message, this would be 
> pretty easy to spot.



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