Hi Rob
Here is how I think in my case I will do it but the code is not tested so it
might not work:
1. Create a filter class
class SearcherFilter extends Filter {
protected String Directory;
public SearcherFilter(String dir) {
Directory = dir;
}
public BitSet bits(IndexReader reader) throws IOException {
BitSet bits = new BitSet(reader.maxDoc());
TermDocs termDocs = reader.termDocs();
while (termDocs.next()) {
int iDoc = termDocs.doc();
org.apache.lucene.document.Document doc = reader.document(iDoc);
Field fldDirectory = doc.getField("Directory");
String str = fldDirectory.stringValue();
if (str.startsWith(Directory)){
bits.set(iDoc);
}
}
return bits;
}
}
2. Create an Anlayzer class
class SearcherAnalyzer extends Analyzer {
/*
* An array containing some common words that
* are not usually useful for searching.
*/
private static final String[] STOP_WORDS =
{
"a" , "and" , "are" , "as" ,
"at" , "be" , "but" , "by" ,
"for" , "if" , "in" , "into" ,
"is" , "it" , "no" , "not" ,
"of" , "on" , "or" , "s" ,
"such" , "t" , "that" , "the" ,
"their" , "then" , "there" , "these" ,
"they" , "this" , "to" , "was" ,
"will" ,
"with"
};
/*
* Stop table
*/
final static private Hashtable stopTable =
StopFilter.makeStopTable(STOP_WORDS);
/*
* create a token stream for this analyser
*/
public final TokenStream tokenStream(final Reader reader) {
try {
TokenStream result = new StandardTokenizer(reader);
result = new StandardFilter(result);
result = new LowerCaseFilter(result);
result = new StopFilter(result,stopTable);
result = new PorterStemFilter(result);
return result;
} catch (Exception e) {
return null;
}
}
}
3. In the main code use it this way:
IndexSearcher searcher =new IndexSearcher(indexLocation);
Query qry = QueryParser.parse(question, "body", new
SearcherAnalyzer());
Hits hits = searcher.search(qry, new SearcherFilter(directory));
In your case if you do not want for example to use the LetterTokenizer() do
not included in the tokenStream method of the Anlayzer.
Hope this helps,
Aaron
----- Original Message -----
From: "Rob Outar" <[EMAIL PROTECTED]>
To: "Lucene Users List" <[EMAIL PROTECTED]>
Sent: Friday, November 15, 2002 4:13 PM
Subject: RE: Searching with Multiple Queries
> For example JGuru has this:
>
> public class MyAnalyzer extends Analyzer
> {
> private static final Analyzer STANDARD = new StandardAnalyzer();
>
> public TokenStream tokenStream(String field, final Reader reader)
> {
> // do not tokenize field called 'element'
> if ("element".equals(field))
> {
> return new CharTokenizer(reader)
> {
> protected boolean isTokenChar(char c)
> {
> return true;
> }
> };
> }
> else
> {
> // use standard analyzer
> return STANDARD.tokenStream(field, reader);
> }
> }
> }
>
>
> I do not want any of my fields toekenized for now, so I was thinking about
> use the above code with a few slight modifications...
>
> Thanks,
>
> Rob
>
>
> -----Original Message-----
> From: Rob Outar [mailto:routar@;ideorlando.org]
> Sent: Friday, November 15, 2002 10:10 AM
> To: Lucene Users List
> Subject: RE: Searching with Multiple Queries
>
>
> I thought this was my problem :-), anyhow can I just write an analyzer tha
t
> does not tokenize the search string and use it with QueryPaser?
>
> Thanks,
>
> Rob
>
> -----Original Message-----
> From: Aaron Galea [mailto:agale@;nextgen.net.mt]
> Sent: Friday, November 15, 2002 9:44 AM
> To: Lucene Users List
> Subject: Re: Searching with Multiple Queries
>
>
> Ok I will let you know the result....
>
> thanks
> Aaron
> ----- Original Message -----
> From: "Otis Gospodnetic" <[EMAIL PROTECTED]>
> To: "Lucene Users List" <[EMAIL PROTECTED]>
> Sent: Friday, November 15, 2002 3:37 PM
> Subject: Re: Searching with Multiple Queries
>
>
> > I say: try it :)
> >
> > Otis
> >
> > --- Aaron Galea <[EMAIL PROTECTED]> wrote:
> > > I am not sure but I was going to do it by using a QueryParser and
> > > creating a
> > > filter that iterates over the documents. For each document I check
> > > the
> > > directory field and use the String.startsWith() function to make it
> > > kinda
> > > work like Prefix query. The Query and the Filter are then used in the
> > > IndexSearcher. Have not tried it yet but I think it will work, what
> > > do you
> > > say?
> > >
> > > Thanks
> > > Aaron
> > >
> > >
> > > ----- Original Message -----
> > > From: "Otis Gospodnetic" <[EMAIL PROTECTED]>
> > > To: "Lucene Users List" <[EMAIL PROTECTED]>
> > > Sent: Friday, November 15, 2002 3:06 PM
> > > Subject: Re: Searching with Multiple Queries
> > >
> > >
> > > > Sounds like 2 queries to me.
> > > > You could do a prefix AND phrase, but that won't be exactly the
> > > same as
> > > > doing a phrase query on subset of results of prefix query.
> > > >
> > > > Otis
> > > >
> > > > --- Aaron Galea <[EMAIL PROTECTED]> wrote:
> > > > > Hi everyone,
> > > > >
> > > > > I have indexed my documents using a hierarchical indexing by
> > > adding a
> > > > > directory field that is indexible but non-tokenized as suggested
> > > in
> > > > > the FAQ. Now I want to do a search first using a prefix query and
> > > > > then apply Phrase query on the returning results. Is this
> > > possible?
> > > > > Can it be applied at one go? Not sure whether
> > > MultiFieldQueryParser
> > > > > can be used this way. Any suggestions???
> > > > >
> > > > > Thanks
> > > > > Aaron
> > > > >
> > > >
> > > >
> > > > __________________________________________________
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