lucene-java-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Peru Redmi <perumyph...@gmail.com>
Subject Re: Understanding Query Parser Behavior
Date Thu, 24 Nov 2016 14:44:21 GMT
Hello Mike,

Here is, how i analyze my text using QueryParser ( with ClassicAnalyzer)
and plain ClassicAnalyzer. On checking the same in luke, i get "//"
as RegexQuery.

Here is my code snippet:

        String value = "http\\://www.google.com";
>         Analyzer anal = new ClassicAnalyzer(Version.LUCENE_30, new
> StringReader(""));
>         QueryParser parser = new QueryParser(Version.LUCENE_30, "name",
> anal);
>         Query query = parser.parse(value);
>         System.out.println(" output terms from query parser ::" + query);



>
>         ArrayList list = new ArrayList();
>         TokenStream stream = anal.tokenStream("name", new
> StringReader(value));
>         stream.reset();
>         while (stream.incrementToken())
>         {
>
> list.add(stream.getAttribute(CharTermAttribute.class).toString());
>         }
>         System.out.println(" output terms from analyzer " + list);



output:

output terms from query parser ::name:http name:// name:www.google.com
output terms from analyzer [http, www.google.com]






On Thu, Nov 24, 2016 at 5:10 PM, Michael McCandless <
lucene@mikemccandless.com> wrote:

> Hi,
>
> You should double check which analyzer you are using during indexing.
>
> The same analyzer on the same string should produce the same tokens.
>
> Mike McCandless
>
> http://blog.mikemccandless.com
>
>
> On Wed, Nov 23, 2016 at 9:38 PM, Peru Redmi <perumyphone@gmail.com> wrote:
> > Could someone elaborate this.
> >
> > On Tue, Nov 22, 2016 at 11:41 AM, Peru Redmi <perumyphone@gmail.com>
> wrote:
> >
> >> Hello,
> >> Can you help me out on your "No" .
> >>
> >> On Mon, Nov 21, 2016 at 11:16 PM, wmartinusa@gmail.com <
> >> wmartinusa@gmail.com> wrote:
> >>
> >>> No
> >>>
> >>> Sent from my LG G4, an AT&T 4G LTE smartphone
> >>>
> >>> ------ Original message------
> >>> *From: *Peru Redmi
> >>> *Date: *Mon, Nov 21, 2016 10:44 AM
> >>> *To: *java-user@lucene.apache.org;
> >>> *Cc: *
> >>> *Subject:*Understanding Query Parser Behavior
> >>>
> >>> Hello All ,Could someone explain *QueryParser* behavior on these
> cases1. While Indexing ,Document doc = new Document();doc.add(new
> Field("*Field*", "*http://www.google.com*", Field.Store.YES,
> Field.Index.ANALYZED));      index has *two* terms - *http* & *
> www.google.com**2.* While searching ,Analyzer anal = new
> *ClassicAnalyzer*(Version.LUCENE_30, newStringReader(""));QueryParser
> parser=new *MultiFieldQueryParser*(Version.LUCENE_30,
> newString[]{"*Field*"},anal);Query query = parser.parse("*http://www.
> google.com *");Now , query has *three *terms  -  (Field:http)
> *(Field://)* (Field:www.google.com)i) Why I have got 3 terms while
> parsing , and 2 terms on indexing (Usingsame ClassicAnalyzer in both cases
> ) ?ii) is this expected behavior of ClassicAnalyzer(Version.LUCENE_30)
> onParser ?iii) what should be done to avoid query part *(Field://)
> *?Thanks,Peru.
> >>>
> >>>
> >>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-user-help@lucene.apache.org
>
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message