Re: how to join 2 queries togther

2003-01-21 Thread Otis Gospodnetic 
It should all be pretty clear from the API javadocs.  Take a look at
BooleanQuery, which is that single query that you can add other
queries.
Good luck.

Otis



--- Charles [EMAIL PROTECTED] wrote:
 Hi everyone,
 
 First of all I'd like to thank you guys for developing a great search
 engine
 framework. I've tested it out and it works flawlessly (and really
 fast too).
 
 Right now I plan to create a more advance search capability. I
 understand
 how to construct the Query object using the QueryParser, but I would
 like to
 know how I can add in different types of queries (like range, terms,
 boolean) all into one. I'm not sure if I can do this with the
 QueryParser
 and am looking for information on how to manually construct a Query
 object
 so i can combine all these requirements.
 
 Here's what I want to do: I would like to have the user select values
 from a
 combo box (e.g. Price range, Area, Country, Number of rooms, land
 area, is
 Freehold or Leasehold etc). From what I gather this involves several
 type of
 queries including RangeQuery (for the price range), a TermQuery,
 BooleanQuery etc. So the question is how do i combine all these types
 of
 queries into one so I can obtain a single Hits result that matches
 all these
 requirements?
 
 Any advice or urls is very much appreciated.
 Charles
 
 
 - Original Message -
 From: alex [EMAIL PROTECTED]
 To: Lucene Users List [EMAIL PROTECTED]
 Sent: Tuesday, January 21, 2003 3:23 PM
 Subject: Re: how to join 2 queries togther
 
 
  Thank you everyone for your help
 
 
  - Original Message -
  From: Lichtner, Guglielmo [EMAIL PROTECTED]
  To: 'Lucene Users List' [EMAIL PROTECTED]
  Sent: Monday, January 20, 2003 9:52 PM
  Subject: RE: how to join 2 queries togther
 
 
  
   From this code I think I see a possible problem.
  
   I think one way to fix it is to parse the word in readLine() and
 add a
  term
   query for each:
  
   BooleanQuery query = new BooleanQuery();
   System.out.print(will all of the words );
   StringTokenizer tok1 = new StringTokenizer(in.readLine());
   while (tok.hasMoreTokens()) {
   query.add(new TermQuery(new Term(content,
 tok1.nextToken()), true,
   false);
   }
   System.out.print(without the words);
   StringTokenizer tok2 = new StringTokenizer(in.readLine());
   while (tok.hasMoreTokens()) {
   query.add(new TermQuery(new Term(content,
 tok2.nextToken()),
 false,
   true);
   }
   System.out.println(Searching for:  + query);
   Hits hits = searcher.search(query);
   System.out.println(hits.length() +  total matching documents 
 );
  
  
   -Original Message-
   From: alex [mailto:[EMAIL PROTECTED]]
   Sent: Monday, January 20, 2003 2:57 PM
   To: Lucene Users List
   Subject: Re: how to join 2 queries togther
  
  
   thxs for your suggestion this is what i have written but it does
 not
 work
   any suggestion on how to get it to work ?
  
System.out.print(will all of the words );
   String q1 = in.readLine();
System.out.print(without the words);
   String q2 = in.readLine();
  
   BooleanQuery query = new BooleanQuery();
 Query matchall = QueryParser.parse(q1, content,
 analyzer);
   query.add(matchall, true, false);
 Query exclude = QueryParser.parse( q2, content ,
  analyzer);
   query.add(exclude, false, true);
  
   System.out.println(Searching for:  +
 query.toString(content));
   Hits hits = searcher.search(query);
   System.out.println(hits.length() +  total matching
 documents
 );
  
  
   - Original Message -
   From: Lichtner, Guglielmo [EMAIL PROTECTED]
   To: 'Lucene Users List' [EMAIL PROTECTED]
   Sent: Monday, January 20, 2003 4:04 PM
   Subject: RE: how to join 2 queries togther
  
  
   
I'm a newbie, but I could suggest this:
   
BooleanQuery bq = new BooleanQuery();
bq.add(firstQuery, true, false);
bq.add(secondQuery, false, true);
   
That should make the first query required, and the second
one prohibited, which is like saying +firstQuery -secondQuery
   
I haven't tried this myself but I did try this for an either/or
   combination,
and it does work for me.
   
-Original Message-
From: alex [mailto:[EMAIL PROTECTED]]
Sent: Monday, January 20, 2003 10:54 AM
To: Lucene User
Subject: how to join 2 queries togther
   
   
hi all
   
I have a method which takes in a normal query breaks into token
 and
  places
   +
in front it
I have a second method which does the same instead puts a -
 sign front
  the
token
   
the reason i have done this is so that the user do not need to
 add +
  and -
signs by themselfs and also I cound
 not get the booleanQuery to work
   
this makes it so that i have 2 queries
   
1) a file must contain all these words
2) a file must exclude this words
   
my question is how do join these 2 queries togther so it
 filters out

Re: how to join 2 queries togther

2003-01-20 Thread alex 
thxs for your suggestion this is what i have written but it does not work
any suggestion on how to get it to work ?

 System.out.print(will all of the words );
String q1 = in.readLine();
 System.out.print(without the words);
String q2 = in.readLine();

BooleanQuery query = new BooleanQuery();
  Query matchall = QueryParser.parse(q1, content, analyzer);
query.add(matchall, true, false);
  Query exclude = QueryParser.parse( q2, content , analyzer);
query.add(exclude, false, true);

System.out.println(Searching for:  + query.toString(content));
Hits hits = searcher.search(query);
System.out.println(hits.length() +  total matching documents  );


- Original Message -
From: Lichtner, Guglielmo [EMAIL PROTECTED]
To: 'Lucene Users List' [EMAIL PROTECTED]
Sent: Monday, January 20, 2003 4:04 PM
Subject: RE: how to join 2 queries togther



 I'm a newbie, but I could suggest this:

 BooleanQuery bq = new BooleanQuery();
 bq.add(firstQuery, true, false);
 bq.add(secondQuery, false, true);

 That should make the first query required, and the second
 one prohibited, which is like saying +firstQuery -secondQuery

 I haven't tried this myself but I did try this for an either/or
combination,
 and it does work for me.

 -Original Message-
 From: alex [mailto:[EMAIL PROTECTED]]
 Sent: Monday, January 20, 2003 10:54 AM
 To: Lucene User
 Subject: how to join 2 queries togther


 hi all

 I have a method which takes in a normal query breaks into token and places
+
 in front it
 I have a second method which does the same instead puts a - sign front the
 token

 the reason i have done this is so that the user do not need to add + and -
 signs by themselfs and also I cound
  not get the booleanQuery to work

 this makes it so that i have 2 queries

 1) a file must contain all these words
 2) a file must exclude this words

 my question is how do join these 2 queries togther so it filters out words
 that i want and do not want ?

 Alex

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Re: how to join 2 queries togther

2003-01-20 Thread Doug Cutting 
Do you want hits to contain the word words or not?  You've got it in 
both clauses...

Also, +(a b c) requires that any of a b or c be in a document, 
but not necessarily all of them.  If you want it to contain all of them 
then each term must be required, e.g., +a +b +c.  In the latest 
sources this can be achieved through the query parser with:
   queryParser.setOperator(DEFAULT_OPERATOR_AND);

I'm not quite sure precisely what you're trying to do, so it's hard to 
tell you how to do it.

Doug

alex wrote:
thxs for your suggestion this is what i have written but it does not work
any suggestion on how to get it to work ?

 System.out.print(will all of the words );
String q1 = in.readLine();
 System.out.print(without the words);
String q2 = in.readLine();

BooleanQuery query = new BooleanQuery();
  Query matchall = QueryParser.parse(q1, content, analyzer);
query.add(matchall, true, false);
  Query exclude = QueryParser.parse( q2, content , analyzer);
query.add(exclude, false, true);

System.out.println(Searching for:  + query.toString(content));
Hits hits = searcher.search(query);
System.out.println(hits.length() +  total matching documents  );


- Original Message -
From: Lichtner, Guglielmo [EMAIL PROTECTED]
To: 'Lucene Users List' [EMAIL PROTECTED]
Sent: Monday, January 20, 2003 4:04 PM
Subject: RE: how to join 2 queries togther




I'm a newbie, but I could suggest this:

BooleanQuery bq = new BooleanQuery();
bq.add(firstQuery, true, false);
bq.add(secondQuery, false, true);

That should make the first query required, and the second
one prohibited, which is like saying +firstQuery -secondQuery

I haven't tried this myself but I did try this for an either/or


combination,


and it does work for me.

-Original Message-
From: alex [mailto:[EMAIL PROTECTED]]
Sent: Monday, January 20, 2003 10:54 AM
To: Lucene User
Subject: how to join 2 queries togther


hi all

I have a method which takes in a normal query breaks into token and places


+


in front it
I have a second method which does the same instead puts a - sign front the
token

the reason i have done this is so that the user do not need to add + and -
signs by themselfs and also I cound
not get the booleanQuery to work

this makes it so that i have 2 queries

1) a file must contain all these words
2) a file must exclude this words

my question is how do join these 2 queries togther so it filters out words
that i want and do not want ?

Alex

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Re: how to join 2 queries togther

2003-01-20 Thread Terry Steichen 
Alex,

If you are using an older version of Lucene, and at the line input (going
into q1 and q2) your user is entering terms without a plus or minus, I think
what your code is actually doing is creating the following query:

+( a b c) -(d e f)  (which is +(a OR b OR c) OR -(d OR e OR f))

What I think you want to create is:
+(a AND b AND c) AND NOT (d AND e AND f), or
+a +b +c -d -e -f

You can check it quickly by, for the line input going into q1, enter on the
line: +a +b +c, and for the line input going into q2 enter on the
line: -d -e -f.  That should give you what you're looking for.
Alternatively, if you follow Doug's comment about using one of the later
Lucene versions and changing the default operator, your code should work the
way you want when terms are entered without pluses or minuses.

HTH,

Terry

- Original Message -
From: alex [EMAIL PROTECTED]
To: Lucene Users List [EMAIL PROTECTED]
Sent: Monday, January 20, 2003 3:52 PM
Subject: Re: how to join 2 queries togther


 I m trying to achieve something like the advanced search for google

 where the user has these option of allowing

 will all of the words =
 without the words =

 http://www.google.com/advanced_search?hl=en

 - Original Message -
 From: Doug Cutting [EMAIL PROTECTED]
 To: Lucene Users List [EMAIL PROTECTED]
 Sent: Monday, January 20, 2003 8:08 PM
 Subject: Re: how to join 2 queries togther


  Do you want hits to contain the word words or not?  You've got it in
  both clauses...
 
  Also, +(a b c) requires that any of a b or c be in a document,
  but not necessarily all of them.  If you want it to contain all of them
  then each term must be required, e.g., +a +b +c.  In the latest
  sources this can be achieved through the query parser with:
  queryParser.setOperator(DEFAULT_OPERATOR_AND);
 
  I'm not quite sure precisely what you're trying to do, so it's hard to
  tell you how to do it.
 
  Doug
 
  alex wrote:
   thxs for your suggestion this is what i have written but it does not
 work
   any suggestion on how to get it to work ?
  
System.out.print(will all of the words );
   String q1 = in.readLine();
System.out.print(without the words);
   String q2 = in.readLine();
  
   BooleanQuery query = new BooleanQuery();
 Query matchall = QueryParser.parse(q1, content,
 analyzer);
   query.add(matchall, true, false);
 Query exclude = QueryParser.parse( q2, content ,
 analyzer);
   query.add(exclude, false, true);
  
   System.out.println(Searching for:  +
 query.toString(content));
   Hits hits = searcher.search(query);
   System.out.println(hits.length() +  total matching documents
 );
  
  
   - Original Message -
   From: Lichtner, Guglielmo [EMAIL PROTECTED]
   To: 'Lucene Users List' [EMAIL PROTECTED]
   Sent: Monday, January 20, 2003 4:04 PM
   Subject: RE: how to join 2 queries togther
  
  
  
  I'm a newbie, but I could suggest this:
  
  BooleanQuery bq = new BooleanQuery();
  bq.add(firstQuery, true, false);
  bq.add(secondQuery, false, true);
  
  That should make the first query required, and the second
  one prohibited, which is like saying +firstQuery -secondQuery
  
  I haven't tried this myself but I did try this for an either/or
  
   combination,
  
  and it does work for me.
  
  -Original Message-
  From: alex [mailto:[EMAIL PROTECTED]]
  Sent: Monday, January 20, 2003 10:54 AM
  To: Lucene User
  Subject: how to join 2 queries togther
  
  
  hi all
  
  I have a method which takes in a normal query breaks into token and
 places
  
   +
  
  in front it
  I have a second method which does the same instead puts a - sign front
 the
  token
  
  the reason i have done this is so that the user do not need to add +
 and -
  signs by themselfs and also I cound
   not get the booleanQuery to work
  
  this makes it so that i have 2 queries
  
  1) a file must contain all these words
  2) a file must exclude this words
  
  my question is how do join these 2 queries togther so it filters out
 words
  that i want and do not want ?
  
  Alex
  
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