In certain cases, I use a modified QueryParser which does not allow "field:"
syntax. While testing variants of Prefix and Wildcard Query, I came across an
oddity with getPrefixQuery(). The standard getPrefixQuery() (2.1) is given
termStr without the trailing *, so the check
if (!allowLeadingWildcard && termStr.startsWith("*"))
throw new ParseException("'*' not allowed as first character in PrefixQuery");
only triggers if you parse the String "**", in which case the PrefixQuery is
then created with Term(field, "*"); whereas if you parse "*", getWildcardQuery()
is called.
So it's not obvious that the test "termStr.startsWith("*"))" can ever occur, so
this code seems redundant.
After Doron's latest patch http://issues.apache.org/jira/browse/LUCENE-813, if
you parse "**" it now calls getWildcardQuery().
Antony
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