Examples of org.apache.lucene.index.IndexReader.deleteDocument()

Class org.apache.lucene.index.IndexReader

Examples of org.apache.lucene.index.IndexReader.deleteDocument()

org.apache.lucene.index.IndexReader.deleteDocument()
Deletes the document numbered docNum. Once a document is deleted it will not appear in TermDocs or TermPostitions enumerations. Attempts to read its field with the {@link #document}method will result in an error. The presence of this document may still be reflected in the {@link #docFreq} statistic, thoughthis will be corrected eventually as the index is further modified. @throws StaleReaderException if the index has changedsince this reader was opened @throws CorruptIndexException if the index is corrupt @throws LockObtainFailedException if another writerhas this index open (write.lock could not be obtained) @throws IOException if there is a low-level IO error

    ir.deleteDocument(8);
    ir.close();


    ir = testIndex.indexReaderFactory();
    ir.deleteDocument(3);
    ir.deleteDocument(8);
    ir.close();


    // make sure they still equal
    testEquals(aprioriIndex,  testIndex);
  }

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        IndexReader reader = IndexReader.open(dir, false);
        Term aaa = new Term("content", "aaa");
        Term bbb = new Term("content", "bbb");
        Term ccc = new Term("content", "ccc");
        assertEquals(37, reader.docFreq(ccc));
        reader.deleteDocument(0);
        assertEquals(37, reader.docFreq(aaa));
        dir.tweakBufferSizes();
        reader.deleteDocument(4);
        assertEquals(reader.docFreq(bbb), 37);
        dir.tweakBufferSizes();

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        Term ccc = new Term("content", "ccc");
        assertEquals(37, reader.docFreq(ccc));
        reader.deleteDocument(0);
        assertEquals(37, reader.docFreq(aaa));
        dir.tweakBufferSizes();
        reader.deleteDocument(4);
        assertEquals(reader.docFreq(bbb), 37);
        dir.tweakBufferSizes();


        IndexSearcher searcher = newSearcher(reader);
        ScoreDoc[] hits = searcher.search(new TermQuery(bbb), null, 1000).scoreDocs;

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    assertEquals(air.hasDeletions(), tir.hasDeletions());
    assertEquals(air.maxDoc(), tir.maxDoc());
    assertEquals(air.numDocs(), tir.numDocs());
    assertEquals(air.numDeletedDocs(), tir.numDeletedDocs());


    air.deleteDocument(3);
    tir.deleteDocument(3);


    assertEquals(air.isCurrent(), tir.isCurrent());
    assertEquals(air.hasDeletions(), tir.hasDeletions());
    assertEquals(air.maxDoc(), tir.maxDoc());

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    assertEquals(air.hasDeletions(), tir.hasDeletions());
    assertEquals(air.maxDoc(), tir.maxDoc());
    assertEquals(air.numDocs(), tir.numDocs());
    assertEquals(air.numDeletedDocs(), tir.numDeletedDocs());


    air.deleteDocument(8);
    tir.deleteDocument(8);


    assertEquals(air.isCurrent(), tir.isCurrent());
    assertEquals(air.hasDeletions(), tir.hasDeletions());
    assertEquals(air.maxDoc(), tir.maxDoc());

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    addDocument(iw, "Hello, earth!");
    addDocument(iw, "All work and no play makes wendy a dull girl");
    iw.close();


    IndexReader unoptimizedReader = IndexReader.open(dir, false);
    unoptimizedReader.deleteDocument(2);


    try {
     new InstantiatedIndex(unoptimizedReader);
    } catch (Exception e) {
      fail("No exceptions when loading an unoptimized reader!");

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                Document d = r.document( i );


                if ( !filter.accept( d ) )
                {
                    r.deleteDocument( i );
                }
            }
        }
        finally
        {

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        if (!checkedDocuments.contains(contentId)) {
          log.debug("Object " + contentId + " wasn't checked in the last run. So i will delete it.");
          if (writeReader == null) {
            writeReader = indexAccessor.getReader(readerNeedsWrite);
          }
          writeReader.deleteDocument(docs.get(contentId));
          objectsDeleted = true;
        }
      }
      if (objectsDeleted) {
        indexLocation.createReopenFile();

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    IndexReader reader = IndexReader.open(new FsDirectory(fs, index, false, getConf()), false);
    try {
      while (values.hasNext()) {
        IntWritable value = values.next();
        LOG.debug("-delete " + index + " doc=" + value);
        reader.deleteDocument(value.get());
      }
    } finally {
      reader.close();
    }
  }

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    IndexReader reader = IndexReader.open(new FsDirectory(fs, index, false, getConf()));
    try {
      while (values.hasNext()) {
        IntWritable value = (IntWritable)values.next();
        LOG.debug("-delete " + index + " doc=" + value);
        reader.deleteDocument(value.get());
      }
    } finally {
      reader.close();
    }
  }

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