Examples of org.apache.lucene.index.IndexReader$ReaderFinishedListener

org.apache.lucene.index.IndexReader
A custom listener that's invoked when the IndexReader is finished.
For a SegmentReader, this listener is called only once all SegmentReaders sharing the same core are closed. At this point it is safe for apps to evict this reader from any caches keyed on {@link #getCoreCacheKey}. This is the same interface that {@link FieldCache} uses, internally, to evictentries.

For other readers, this listener is called when they are closed.
@lucene.experimental

      Document[] data= createDataTwo();
      
      TestDataDigester testDigester=new TestDataDigester(_facetHandlers,data);
      BoboIndexer indexer=new BoboIndexer(testDigester,dir);
      indexer.index();
      IndexReader r = IndexReader.open(dir,false);
      r.close();
    } catch (UnsupportedEncodingException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }

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      Document[] data= createData();
      
      TestDataDigester testDigester=new TestDataDigester(_facetHandlers,data);
      BoboIndexer indexer=new BoboIndexer(testDigester,dir);
      indexer.index();
      IndexReader r = IndexReader.open(dir,false);
      r.close();
    } catch (UnsupportedEncodingException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }

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    BrowseResult result = null;
    BoboBrowser boboBrowser=null;
    int expectedHitNum = (_documentSize/2) - 1;
    try {
      Directory ramIndexDir = createIndex();
      IndexReader srcReader=IndexReader.open(ramIndexDir,true);
      boboBrowser = new BoboBrowser(BoboIndexReader.getInstance(srcReader,_facetHandlers, null));
      result = boboBrowser.browse(br);
      
      assertEquals(expectedHitNum,result.getNumHits());

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    BrowseResult result = null;
    BoboBrowser boboBrowser=null;
    
    try {
      Directory ramIndexDir = createIndexTwo();
      IndexReader srcReader=IndexReader.open(ramIndexDir,true);
      boboBrowser = new BoboBrowser(BoboIndexReader.getInstance(srcReader,_facetHandlers, null));
      
      BrowseRequest br=new BrowseRequest();
      br.setCount(20);
      br.setOffset(0);

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      Document[] data= createData();
      
      TestDataDigester testDigester=new TestDataDigester(_facetHandlers,data);
      BoboIndexer indexer=new BoboIndexer(testDigester,dir);
      indexer.index();
      IndexReader r = IndexReader.open(dir,false);
      r.close();
    } catch (UnsupportedEncodingException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }

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    BrowseResult result = null;
    BoboBrowser boboBrowser=null;
    int expectedHitNum = 3;
    try {
      Directory ramIndexDir = createIndex();
      IndexReader srcReader=IndexReader.open(ramIndexDir,true);
      boboBrowser = new BoboBrowser(BoboIndexReader.getInstance(srcReader,_facetHandlers, null));
      result = boboBrowser.browse(br);
      
      assertEquals(expectedHitNum,result.getNumHits());
    } catch (BrowseException e) {

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  public void digest(DataHandler handler) throws IOException {
    int numcars=getMaxDocs();
    Random rand=new Random();
        
    IndexReader reader=null;
    try{
      reader=IndexReader.open(FSDirectory.open(getDataFile()),true);
      int carcount=reader.maxDoc();
      
      Document[] docCache=new Document[carcount];
      for (int i=0;i<carcount;++i){
        docCache[i]=reader.document(i);
      }
      
      for (int i=0;i<numcars;++i){
        if (i!=0 && i%1000==0){
          System.out.println(i+" cars indexed.");
        }
        Document doc=new Document();
        int n=rand.nextInt(10);
        if (n==0){
          makeCar(doc,cars[rand.nextInt(cars.length)]);          
        }
        else{
          Document srcDoc=docCache[rand.nextInt(carcount)];
          makeCar(doc,srcDoc);          
        }
        
        populateDocument(doc,null);                                
        handler.handleDocument(doc);        
      }
    }
    finally{
      if (reader!=null){
        reader.close();
      }
    }
  }

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public class IndexDumper {
  private BoboIndexReader _reader;
  private int curr_docid=0;
  private int maxdoc;
  public IndexDumper(File idxDir) throws IOException{
    IndexReader idxReader=IndexReader.open(FSDirectory.open(idxDir),true);
    if (idxReader!=null){
      try{
        _reader=BoboIndexReader.getInstance(idxReader);
        maxdoc=_reader.maxDoc();
      }
      catch(Exception e){
        e.printStackTrace();
        maxdoc=0;
        idxReader.close();
      }
    }
  }

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    File outfile = new File(_outDir,"facetvals.txt");
    BufferedOutputStream ostream = new BufferedOutputStream(new FileOutputStream(outfile));
    PrintWriter writer = new PrintWriter(new OutputStreamWriter(ostream,"UTF-8"));
    
    IndexReader reader=IndexReader.open(_idxDir);
    BoboIndexReader boboReader = BoboIndexReader.getInstance(reader);
    
    Set<String> fieldNames = boboReader.getFacetNames();
    for (String fieldName : fieldNames)
    {
      TermEnum te = reader.terms(new Term(fieldName,""));
      while(te.next())
      {
        Term t = te.term();
        if (!fieldName.equals(t.field())) break;
        writer.println(t.field()+":"+t.text());

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    }
    
    Thread.sleep(10000);
    
    File indexDir = manager.getIndexDirectory();
    IndexReader indexReader = IndexReader.open(indexDir);
    String[] words = suggest.suggest("test", indexReader, DocumentCreator.FIELD_TEXT);
    assertEquals(0,words.length);
  
    words = suggest.suggest("full",indexReader,DocumentCreator.FIELD_TEXT);
    assertEquals(1,words.length);

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