EH> I presume your analyzer normalized accented characters? Which analyzer
EH> is that?
Yes, i'm using a custom analyser for indexing / searching, ti consists
in :
- FrenchStopFilter
- IsoLatinFilter (this is the one that will replace accented
characters)
- LowerCaseFilter
- ApostropheFilter (in order to handle terms like with apostrophes,
for instance "l'expérience" will be decompozed into two tokens : "l"
"expérience"
EH> You will need to employ some form of character normalization on
EH> wildcard queries too.
thanks, it works succeffuly, code snippet following
---
sven
/*----------------------- CODE ----------------------------*/
private static Query CreateCustomQuery(Query query)
{
if(query instanceof BooleanQuery) {
final BooleanClause[] bClauses = ((BooleanQuery) query).getClauses();
// The first clause is required
if(bClauses[0].prohibited != true)
bClauses[0].required = true;
// Will parse each clause to remove accents if needed
Term term;
for (int i = 0; i < bClauses.length; i++) {
if(bClauses[i].query instanceof WildcardQuery) {
term = ((WildcardQuery)bClauses[i].query).getTerm();
bClauses[i].query = new WildcardQuery(new Term(term.field(),
ISOLatin1AccentFilter.RemoveAccents(term.text().toLowerCase())));
}
if(bClauses[i].query instanceof PrefixQuery) {
term = ((PrefixQuery)bClauses[i].query).getPrefix();
bClauses[i].query = new PrefixQuery(new Term(term.field(),
ISOLatin1AccentFilter.RemoveAccents(term.text().toLowerCase())));
// toLowerCase because the text is lowercased during indexation
}
}
}
else if(query instanceof WildcardQuery) {
final Term term = ((WildcardQuery)query).getTerm();
query = new WildcardQuery(new Term(term.field(),
ISOLatin1AccentFilter.RemoveAccents(term.text().toLowerCase())));
}
else if(query instanceof PrefixQuery) {
final Term term = ((PrefixQuery)query).getPrefix();
query = new PrefixQuery(new Term(term.field(),
ISOLatin1AccentFilter.RemoveAccents(term.text().toLowerCase())));
}
return query;
}
/*----------------------- END OF CODE ----------------------------*/
EH> Erik
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