Jack Krupansky created LUCENE-4382:
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Summary: Unicode escape no longer works for non-prefix wildcard
terms
Key: LUCENE-4382
URL: https://issues.apache.org/jira/browse/LUCENE-4382
Project: Lucene - Core
Issue Type: Bug
Components: core/queryparser
Affects Versions: 4.0-BETA
Reporter: Jack Krupansky
Fix For: 4.0
LUCENE-588 added support for escaping of wildcard characters, but when the
de-escaping logic was pushed down from the query parser (QueryParserBase) into
WildcardQuery, support for Unicode escaping (backslash, "u", and the four-digit
hex Unicode code) was not included.
Two solutions:
1. Do the Unicode de-escaping in the query parser before calling
getWildcardQuery.
2. Support Unicode de-escaping in WildcardQuery.
A suffix wildcard does not exhibit this problem because full de-escaping is
performed in the query parser before calling getPrefixQuery.
My test case, added at the beginning of
TestExtendedDismaxParser.testFocusQueryParser:
{code}
assertQ("expected doc is missing (using escaped edismax w/field)",
req("q", "t_special:literal\\:\\u0063olo*n",
"defType", "edismax"),
"//doc[1]/str[@name='id'][.='46']");
{code}
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