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From Jack Krupansky <jack.krupan...@gmail.com>
Subject Re: Need help in alphanumeric search
Date Thu, 01 Oct 2015 19:49:01 GMT
Technically, there is no such thing as a "sentence search" in Lucene.
Please provide an example of how you wish to search, and then we can
determine whether a phrase query or a span query might accomplish the task.

-- Jack Krupansky

On Thu, Oct 1, 2015 at 11:53 AM, Bhaskar <bhaskar1484@gmail.com> wrote:

> Hi,
> I am looking for sentence search rather than word search.
> Regards,
> Bhaskar
> On Oct 1, 2015 7:07 PM, "Ian Lea" <ian.lea@gmail.com> wrote:
>
> > Take a look at
> >
> http://lucene.apache.org/core/5_3_1/queryparser/org/apache/lucene/queryparser/classic/package-summary.html#package_description
> > .
> > Sounds like you want an AND, or a +, or both. You may also want to
> > take a look at phrase queries and/or span queries.
> >
> >
> > --
> > Ian.
> >
> >
> >
> > --
> > Ian.
> >
> >
> > On Thu, Oct 1, 2015 at 1:52 PM, Bhaskar <bhaskar1484@gmail.com> wrote:
> > > Hi Uwe,
> > > my searching is working like this.
> > > if i give input as "SD RAM Bhaskar" then which ever strings are having
> > > "SD", "RAM", "Bhaskar" all results are coming .
> > > i.e. "SD lib"
> > >       "RAM hello"
> > >       "hi Bhaskar "
> > >       "Bhaskar hai SD"
> > >
> > >
> > > But I want below output.
> > >        "SD RAM Bhaskar"
> > >        "SD RAM Bhaskar hello"
> > > i.e in the begining string have "SD RAM Bhaskar"  then next string can
> be
> > > any thing.
> > >
> > >
> > > but my current application result where ever it finds the "SD", or
> "RAM",
> > > or "Bhaskar" I am getting all the string.
> > >
> > >
> > > Can you please advice?
> > > Thanks a lot in advance.
> > >
> > > Regards,
> > > Bhaskar
> > >
> > >
> > >
> > >
> > > On Wed, Sep 30, 2015 at 12:23 PM, Uwe Schindler <uwe@thetaphi.de>
> wrote:
> > >
> > >> Hi Bhaskar,
> > >>
> > >> the answer is very simple: Your analysis is not useful for the type of
> > >> queries and data you are using. You are using SimpleAnalyzer in your
> > >> search/indexing code:
> > >>
> > >>
> > >>
> >
> https://lucene.apache.org/core/5_3_1/analyzers-common/org/apache/lucene/analysis/core/SimpleAnalyzer.html
> > >> "An Analyzer that filters LetterTokenizer with LowerCaseFilter"
> > >>
> > >> And LetterTokenizer does the following:
> > >>
> > >>
> >
> https://lucene.apache.org/core/5_3_1/analyzers-common/org/apache/lucene/analysis/core/LetterTokenizer.html
> > >> "A LetterTokenizer is a tokenizer that divides text at non-letters.
> > That's
> > >> to say, it defines tokens as maximal strings of adjacent letters, as
> > >> defined by java.lang.Character.isLetter() predicate."
> > >>
> > >> So it creates a new token at every non-letter boundary. All
> non-letters
> > >> are discarded (because they are treated as token boundary). So your
> > queries
> > >> can never match.
> > >>
> > >> I'd suggest to first inform yourself about analysis and choose a
> better
> > >> one that suits your underlying data and the queries you want to do.
> > Maybe
> > >> use WhitespaceAnalyzer or better StandardAnalyzer as a first step. Be
> > sure
> > >> to reindex your data before querying. The Analyzer used on the search
> > side
> > >> must be the same like on the query side. If you want to use wildcards,
> > you
> > >> have to take care more, because wildcards are not really natural for
> > "full
> > >> text search engine" and may cause inconsistent results.
> > >>
> > >> Uwe
> > >>
> > >> -----
> > >> Uwe Schindler
> > >> H.-H.-Meier-Allee 63, D-28213 Bremen
> > >> http://www.thetaphi.de
> > >> eMail: uwe@thetaphi.de
> > >>
> > >> > -----Original Message-----
> > >> > From: Bhaskar [mailto:bhaskar1484@gmail.com]
> > >> > Sent: Wednesday, September 30, 2015 4:28 AM
> > >> > To: java-user@lucene.apache.org
> > >> > Subject: Re: Need help in alphanumeric search
> > >> >
> > >> > Hi Uwe,
> > >> >
> > >> > Below is my indexing code:
> > >> >
> > >> > public static void main(String[] args) throws Exception { //Path
> > >> indexDir =
> > >> > new Path(INDEX_DIR); public static final String INDEX_DIR =
> > >> "c:/DBIndexAll/";
> > >> > final Path indexDir = Paths.get(INDEX_DIR); SimpleDBIndexer indexer
> =
> > new
> > >> > SimpleDBIndexer(); try{
> > >> >    Class.forName(JDBC_DRIVER).newInstance();
> > >> >    Connection conn = DriverManager.getConnection(CONNECTION_URL +
> > >> > DBNAME, USER_NAME, PASSWORD);
> > >> >    SimpleAnalyzer analyzer = new SimpleAnalyzer();
> > >> >    IndexWriterConfig indexWriterConfig = new
> > IndexWriterConfig(analyzer);
> > >> >    IndexWriter indexWriter = new
> > IndexWriter(FSDirectory.open(indexDir),
> > >> > indexWriterConfig);
> > >> >    System.out.println("Indexing to directory '" + indexDir +
> "'...");
> > >> >    int indexedDocumentCount = indexer.indexDocs(indexWriter, conn);
> > >> >    indexWriter.close();
> > >> >    System.out.println(indexedDocumentCount + " records have been
> > indexed
> > >> > successfully"); } catch (Exception e) {
> > >> >    e.printStackTrace();
> > >> > }
> > >> > }
> > >> >
> > >> > int indexDocs(IndexWriter writer, Connection conn) throws Exception
> {
> > >> >   String sql = QUERY1;
> > >> >   Statement stmt = conn.createStatement();
> > >> >   ResultSet rs = stmt.executeQuery(sql);
> > >> >   int i=0;
> > >> >   while (rs.next()) {
> > >> >      Document d = new Document();
> > >> >      d.add(new TextField("cpn", rs.getString("cpn"),
> > Field.Store.YES));
> > >> >
> > >> >      writer.addDocument(d);
> > >> >      i++;
> > >> >  }
> > >> >   stmt.close();
> > >> >   rs.close();
> > >> >
> > >> >   return i;
> > >> > }
> > >> >
> > >> >
> > >> > Searching code:
> > >> >
> > >> > public class SimpleDBSearcher {
> > >> > // PLASTRON
> > >> > private static final String LUCENE_QUERY = "SD*"; private static
> final
> > >> int
> > >> > MAX_HITS = 500; private static final String INDEX_DIR =
> > "C:/DBIndexAll/";
> > >> >
> > >> > public static void main(String[] args) throws Exception { // File
> > >> indexDir = new
> > >> > File(SimpleDBIndexer.INDEX_DIR); final Path indexDir =
> > >> > Paths.get(SimpleDBIndexer.INDEX_DIR);
> > >> > String query = LUCENE_QUERY;
> > >> > SimpleDBSearcher searcher = new SimpleDBSearcher();
> > >> > searcher.searchIndex(indexDir, query); }
> > >> >
> > >> > private void searchIndex(Path indexDir, String queryStr) throws
> > >> Exception {
> > >> > Directory directory = FSDirectory.open(indexDir);
> > System.out.println("The
> > >> > query string is " + queryStr); MultiFieldQueryParser queryParser =
> new
> > >> > MultiFieldQueryParser(new String[] { "cpn" }, new
> StandardAnalyzer());
> > >> > IndexReader reader = DirectoryReader.open(directory); IndexSearcher
> > >> > searcher = new IndexSearcher(reader);
> > >> > queryParser.getAllowLeadingWildcard();
> > >> >
> > >> > Query query = queryParser.parse(queryStr); TopDocs topDocs =
> > >> > searcher.search(query, MAX_HITS);
> > >> >
> > >> > ScoreDoc[] hits = topDocs.scoreDocs;
> > >> > System.out.println(hits.length + " Record(s) Found"); for (int i =
> 0;
> > i <
> > >> > hits.length; i++) { int docId = hits[i].doc; Document d =
> > >> searcher.doc(docId);
> > >> > System.out.println("\"cpn value is:\" " + d.get("cpn")); } if
> > >> (hits.length == 0) {
> > >> > System.out.println("No Data Founds "); }
> > >> >
> > >> > }
> > >> > }
> > >> >
> > >> >
> > >> > Please help here, thanks in advance.
> > >> >
> > >> > Regards,
> > >> > Bhaskar
> > >> >
> > >> > On Tue, Sep 29, 2015 at 3:47 AM, Uwe Schindler <uwe@thetaphi.de>
> > wrote:
> > >> >
> > >> > > Hi Erick,
> > >> > >
> > >> > > This mail was in Lucene's user mailing list. This is not about
> Solr,
> > >> > > so user cannot provide his Solr config! :-) In any case, it would
> be
> > >> > > good to get the Analyzer + code you use while indexing and also
> the
> > >> > > code (+ Analyzer) that creates the query while searching.
> > >> > >
> > >> > > Uwe
> > >> > >
> > >> > > -----
> > >> > > Uwe Schindler
> > >> > > H.-H.-Meier-Allee 63, D-28213 Bremen
> > >> > > http://www.thetaphi.de
> > >> > > eMail: uwe@thetaphi.de
> > >> > >
> > >> > >
> > >> > > > -----Original Message-----
> > >> > > > From: Erick Erickson [mailto:erickerickson@gmail.com]
> > >> > > > Sent: Monday, September 28, 2015 6:01 PM
> > >> > > > To: java-user
> > >> > > > Subject: Re: Need help in alphanumeric search
> > >> > > >
> > >> > > > You need to supply the definitions of this field from your
> > >> > > > schema.xml
> > >> > > file,
> > >> > > > both the <field> and <fieldType>
> > >> > > >
> > >> > > > Additionally, please provide the results of the query you're
> > trying
> > >> > > > with &debug=true appended.
> > >> > > >
> > >> > > > The adminUI/analysis page is very helpful in these situations
as
> > >> well.
> > >> > > Select
> > >> > > > the appropriate core from the drop-down on the left and
you'll
> see
> > >> > > > an "analysis"
> > >> > > > section appear that shows you exactly what happens when
the
> field
> > is
> > >> > > > analyzed.
> > >> > > >
> > >> > > > Best,
> > >> > > > Erick
> > >> > > >
> > >> > > > On Mon, Sep 28, 2015 at 5:01 AM, Bhaskar <bhaskar1484@gmail.com
> >
> > >> > wrote:
> > >> > > > > Thanks Lan for reply.
> > >> > > > >
> > >> > > > > cpn values are like 123-0049, 342-043, ab23-090, hedwsdg
> > >> > > > >
> > >> > > > > my application is working when i gave search  for below
inputs
> > >> > > > > 1) ab*
> > >> > > > >  2)hedwsdg
> > >> > > > > 3) hed*
> > >> > > > >
> > >> > > > > but it is not working for
> > >> > > > > 1) 123*
> > >> > > > > 2) 123-0049
> > >> > > > > 3) ab23*
> > >> > > > >
> > >> > > > >
> > >> > > > > Note: if the search input has number then it is not
working.
> > >> > > > >
> > >> > > > > Thanks in advacne.
> > >> > > > >
> > >> > > > >
> > >> > > > > On Mon, Sep 28, 2015 at 3:49 PM, Ian Lea <ian.lea@gmail.com>
> > >> wrote:
> > >> > > > >
> > >> > > > >> Hi
> > >> > > > >>
> > >> > > > >>
> > >> > > > >> Can you provide a few examples of values of cpn
that a) are
> and
> > >> > > > >> b) are not being found, for indexing and searching.
> > >> > > > >>
> > >> > > > >> You may also find some of the tips at
> > >> > > > >>
> > >> > > > >> http://wiki.apache.org/lucene-
> > >> > > > java/LuceneFAQ#Why_am_I_getting_no_hits
> > >> > > > >> _.2F_incorrect_hits.3F
> > >> > > > >> useful.
> > >> > > > >>
> > >> > > > >> You haven't shown the code that created the IndexWriter
so
> the
> > >> > > > >> tip about using the same analyzer at index and
search time
> > might
> > >> > > > >> be relevant.
> > >> > > > >>
> > >> > > > >>
> > >> > > > >>
> > >> > > > >> --
> > >> > > > >> Ian.
> > >> > > > >>
> > >> > > > >>
> > >> > > > >> On Mon, Sep 28, 2015 at 10:49 AM, Bhaskar
> > >> > <bhaskar1484@gmail.com>
> > >> > > > wrote:
> > >> > > > >> > Hi,
> > >> > > > >> > I am beginner in Apache lucene, I am using
5.3.1.
> > >> > > > >> > I have created  the index on the database
result. The index
> > >> > > > >> > values are having alphanumeric and strings
values. I am
> able
> > to
> > >> > > > >> > search the strings
> > >> > > > >> but
> > >> > > > >> > I am not able to search alphanumeric values.
> > >> > > > >> >
> > >> > > > >> > Can someone help me here.
> > >> > > > >> >
> > >> > > > >> > Below is indexing code...
> > >> > > > >> >
> > >> > > > >> > int indexDocs(IndexWriter writer, Connection
conn) throws
> > >> > > > >> > Exception { Statement stmt = conn.createStatement();
> > >> > > > >> >   ResultSet rs = stmt.executeQuery(sql);
> > >> > > > >> >   int i=0;
> > >> > > > >> >   while (rs.next()) {
> > >> > > > >> >      Document d = new Document();
> > >> > > > >> >     // System.out.println("cpn is" + rs.getString("cpn"));
> > >> > > > >> >     // System.out.println("mpn is" + rs.getString("mpn"));
> > >> > > > >> >
> > >> > > > >> >   d.add(new TextField("cpn", rs.getString("cpn"),
> > >> > > > >> > Field.Store.YES));
> > >> > > > >> >
> > >> > > > >> >
> > >> > > > >> >      writer.addDocument(d);
> > >> > > > >> >      i++;
> > >> > > > >> >  }
> > >> > > > >> > }
> > >> > > > >> >
> > >> > > > >> > Searching code:
> > >> > > > >> >
> > >> > > > >> >
> > >> > > > >> > private void searchIndex(Path indexDir, String
queryStr)
> > throws
> > >> > > > >> Exception {
> > >> > > > >> > Directory directory = FSDirectory.open(indexDir);
> > >> > > > >> > System.out.println("The query string is "
+ queryStr); //
> > >> > > > >> > MultiFieldQueryParser queryParser = new
> > >> > > > >> > MultiFieldQueryParser(new // String[] {"mpn"},
new
> > >> > > > >> > StandardAnalyzer()); // IndexReader reader
=
> > >> > > > >> > IndexReader.open(directory); IndexReader reader
=
> > >> > > > >> > DirectoryReader.open(directory); IndexSearcher
searcher =
> new
> > >> > > > >> > IndexSearcher(reader); Analyzer analyzer =
new
> > >> > > > >> > StandardAnalyzer(); analyzer.tokenStream("cpn",
queryStr);
> > >> > > > >> > QueryParser parser = new QueryParser("cpn",
analyzer);
> > >> > > > >> > parser.setDefaultOperator(Operator.OR);
> > >> > > > >> > parser.getAllowLeadingWildcard();
> > >> > > > >> > parser.setAutoGeneratePhraseQueries(true);
> > >> > > > >> > Query query = parser.parse(queryStr);
> searcher.search(query,
> > >> > > > >> > 100); TopDocs topDocs = searcher.search(query,
MAX_HITS);
> > >> > > > >> >
> > >> > > > >> > ScoreDoc[] hits = topDocs.scoreDocs;
> > >> > > > >> > System.out.println(hits.length
> > >> > > > >> > + " Record(s) Found"); for (int i = 0; i <
hits.length;
> i++)
> > {
> > >> > > > >> > + int
> > >> > > > >> > docId = hits[i].doc; Document d = searcher.doc(docId);
> > >> > > > >> > System.out.println("\"value is:\" " + d.get("cpn"));
} if
> > >> > > > >> > (hits.length == 0) { System.out.println("No
Data Founds
> "); }
> > >> > > > >> >
> > >> > > > >> >
> > >> > > > >> > Thanks in advance.
> > >> > > > >> >
> > >> > > > >> > --
> > >> > > > >> > Keep Smiling....
> > >> > > > >> > Thanks & Regards
> > >> > > > >> > Bhaskar.
> > >> > > > >> > Mobile:9866724142
> > >> > > > >>
> > >> > > > >>
> > -----------------------------------------------------------------
> > >> > > > >> ---- To unsubscribe, e-mail:
> > >> > > > >> java-user-unsubscribe@lucene.apache.org
> > >> > > > >> For additional commands, e-mail:
> > java-user-help@lucene.apache.org
> > >> > > > >>
> > >> > > > >>
> > >> > > > >
> > >> > > > >
> > >> > > > > --
> > >> > > > > Keep Smiling....
> > >> > > > > Thanks & Regards
> > >> > > > > Bhaskar.
> > >> > > > > Mobile:9866724142
> > >> > > >
> > >> > > >
> > --------------------------------------------------------------------
> > >> > > > - To unsubscribe, e-mail:
> java-user-unsubscribe@lucene.apache.org
> > >> > > > For additional commands, e-mail:
> java-user-help@lucene.apache.org
> > >> > >
> > >> > >
> > >> > >
> > ---------------------------------------------------------------------
> > >> > > To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> > >> > > For additional commands, e-mail: java-user-help@lucene.apache.org
> > >> > >
> > >> > >
> > >> >
> > >> >
> > >> > --
> > >> > Keep Smiling....
> > >> > Thanks & Regards
> > >> > Bhaskar.
> > >> > Mobile:9866724142
> > >>
> > >>
> > >> ---------------------------------------------------------------------
> > >> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> > >> For additional commands, e-mail: java-user-help@lucene.apache.org
> > >>
> > >>
> > >
> > >
> > > --
> > > Keep Smiling....
> > > Thanks & Regards
> > > Bhaskar.
> > > Mobile:9866724142
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> > For additional commands, e-mail: java-user-help@lucene.apache.org
> >
> >
>

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