[GitHub] [lucenenet] NightOwl888 commented on issue #632: Cannot parse 'XX*': Encountered ""

[GitBox <gi...@apache.org>]

NightOwl888 commented on issue #632:
URL: https://github.com/apache/lucenenet/issues/632#issuecomment-1100187973

   What datatype is `{input}`?
   
   I suspect you might be having parse issues due to the culture of the current thread in your application, which may be formatting `{input}` in an unexpected way. You may need to use [`FormattableString.Invariant()`](https://docs.microsoft.com/en-us/dotnet/api/system.formattablestring.invariant?view=net-6.0).
   
   Note also that the parsing may be failing because a new `QueryParser` instance uses the culture of the current thread by default and you may need to change the culture.
   
   ```c#
   var parser = new MultiFieldQueryParser(LuceneVersion.LUCENE_48, new string[] { "foo", "bar" }, analyzer)
   {
       Locale = CultureInfo.InvariantCulture
   };
   ```
   
   Whatever the case, you should be able to debug what is happening by recording the culture and value to be parsed during a failure and then you should reproduce the issue in a debug environment so you can step through to debug. Note that you can [enable Source Link](https://lucenenet.apache.org/docs/4.8.0-beta00016/api/core/source-stepping.html) on 4.8.0-beta00016 so you can step into the QueryParser code also.


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