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

Class org.apache.lucene.index.IndexReader

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

org.apache.lucene.index.IndexReader.undeleteAll()
Undeletes all documents currently marked as deleted in this index.
NOTE: this method can only recover documents marked for deletion but not yet removed from the index; when and how Lucene removes deleted documents is an implementation detail, subject to change from release to release. However, you can use {@link #numDeletedDocs} on the current IndexReader instance tosee how many documents will be un-deleted. @throws StaleReaderException if the index has changedsince this reader was opened @throws LockObtainFailedException if another writerhas this index open (write.lock could not be obtained) @throws CorruptIndexException if the index is corrupt @throws IOException if there is a low-level IO error

  }


  public void undeleteDocuments() {
    IndexReader reader=IndexReaderFactoryUtils.getIndexReader(indexFactory);
    try {
      reader.undeleteAll();
    } catch(IOException ex) {
      throw new LuceneIndexAccessException("Error during undeleting all documents.",ex);
    } finally {
      IndexReaderFactoryUtils.releaseIndexReader(indexFactory,reader);
    }

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                // Construct the reader
                //
                IndexReader reader = IndexReader.open(localIndexDir);
                if (reader.hasDeletions()) {
                    LOG.info("Clearing old deletions in " + indexDir + "(" + localIndexDir + ")");
                    reader.undeleteAll();
                }
                maxDoc += reader.maxDoc();
                vReaders.add(reader);
            }
        }

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                // Construct the reader
                //
                IndexReader reader = IndexReader.open(localIndexDir);
                if (reader.hasDeletions()) {
                    LOG.info("Clearing old deletions in " + indexDir + "(" + localIndexDir + ")");
                    reader.undeleteAll();
                }
                maxDoc += reader.maxDoc();
                vReaders.add(reader);
            }
        }

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    int maxDoc = r.maxDoc();
    int numDeleted = 0;
    // percent is an absolute target:
    int numToDelete = ((int) (maxDoc * percent)) - r.numDeletedDocs();
    if (numToDelete < 0) {
      r.undeleteAll();
      numToDelete = (int) (maxDoc * percent);
    }
    while (numDeleted < numToDelete) {
      double delRate = ((double) (numToDelete-numDeleted))/r.numDocs();
      TermDocs termDocs = r.termDocs(null);

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    int maxDoc = r.maxDoc();
    int numDeleted = 0;
    // percent is an absolute target:
    int numToDelete = ((int) (maxDoc * percent)) - r.numDeletedDocs();
    if (numToDelete < 0) {
      r.undeleteAll();
      numToDelete = (int) (maxDoc * percent);
    }
    while (numDeleted < numToDelete) {
      double delRate = ((double) (numToDelete-numDeleted))/r.numDocs();
      TermDocs termDocs = r.termDocs(null);

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