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From Michael McCandless <luc...@mikemccandless.com>
Subject Re: lucene 4.3 search not working ShingleAnalyzerWrapper
Date Sat, 21 Sep 2013 17:08:44 GMT
What's actually going wrong?  Exception?  No hits?

What query is actually being executed?  Ie what does that
System.out.println print?

If you search for i am leagend instead does it still find no hits?

Mike McCandless

http://blog.mikemccandless.com


On Sat, Sep 21, 2013 at 2:48 AM, illusionz <deep.illusionz@gmail.com> wrote:
> Hi,
>
> I am learning lucene, and have created indexes using LuceneWriter (which
> worked fine), but when I try an query it with LuceneReader it dose not
> work, need help on the same.  Following is the code for LuceneWriter.java
> and LuceneReader.java:
>
>
> public class LuceneWriter {
>  public static void main(String[] arg) throws IOException
> {
> File docDir = new File(DataConfig.dataDir);
>  Directory dir =  FSDirectory.open(docDir);
> HashMap<String, Analyzer> documentFiledAnalysers = new HashMap<String,
> Analyzer>();
>  documentFiledAnalysers.put("id", new StandardAnalyzer(Version.LUCENE_43));
>  documentFiledAnalysers.put("content", new ShingleAnalyzerWrapper(new
> StandardAnalyzer(Version.LUCENE_43), 2, 2, "", false, true));
>  PerFieldAnalyzerWrapper analyserWrapper = new PerFieldAnalyzerWrapper(new
> StandardAnalyzer(Version.LUCENE_43), documentFiledAnalysers);
>  IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_43,
> analyserWrapper);
>  iwc.setOpenMode(OpenMode.CREATE);
>  IndexWriter writer =  new IndexWriter(dir, iwc);
>  Document doc2 = new Document();
> doc2.add(new StringField("id", "2", Field.Store.YES));
> doc2.add(new StringField("content", "I am leagend",
> Field.Store.<http://field.store.no/>
> YES));
>  Document doc3 = new Document();
> doc3.add(new StringField("id", "3", Field.Store.YES));
> doc3.add(new StringField("content", "Tom got a cat.",
> Field.Store.<http://field.store.no/>
> YES));
>  writer.addDocument(doc2);
> writer.addDocument(doc3);
>
>  writer.close();
>  System.out.println("------------ Added index -----------");
>  }
>
> }
>
>
>
> public class LuceneReader {
>
>
> /**
>
> * @param args
>
> */
>
> public static void main(String[] args) {
>
> try {
>
> IndexReader reader =
> DirectoryReader.open(FSDirectory.open(new File(DataConfig.dataDir)));
>
> IndexSearcher searcher =  new IndexSearcher(reader);
>
> HashMap<String, Analyzer> documentFieldAnalysers = new HashMap<String,
> Analyzer>();
>
> documentFieldAnalysers.put("id", new StandardAnalyzer(Version.LUCENE_43));
>
> documentFieldAnalysers.put("content", new ShingleAnalyzerWrapper(new
> StandardAnalyzer(Version.LUCENE_43),
> 2, 2, "", false, true));
>
> PerFieldAnalyzerWrapper analyserWrapper
> = new PerFieldAnalyzerWrapper(new StandardAnalyzer(Version.LUCENE_43),
> documentFieldAnalysers);
>
> QueryParser qpHelper = new QueryParser(Version.LUCENE_43, "content",
> analyserWrapper);
>
> Query query = qpHelper.parse("amleagend");
>
> TopDocs results = searcher.search(query, 1000);
>
> System.out.println("Searching for: " + query);
>
> ScoreDoc[] hits = results.scoreDocs;
>
>
>
> for(int i =0; i < hits.length; i++)
>
> {
>
>   Document doc = searcher.doc(hits[i].doc);
>
>   System.out.println(doc);
>
> }
>
>
>
>
>
> } catch (Exception e) {
>
> // TODO Auto-generated catch block
>
> e.printStackTrace();
>
> }
>
>
> }
>
>
>
>
> }
>
>
> Thanks,
>
> Depanker Sharma

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