How to use

add

method

in

org.apache.lucene.index.SegmentMerger

 infoStream.print(" " + si.name + " (" + si.docCount + " docs)");
IndexReader reader = new SegmentReader(si);
merger.add(reader);
if ((reader.directory() == this.directory) || // if we own the directory
  (reader.directory() == this.ramDirectory))

/** Merges the provided indexes into this index.
 * <p>After this completes, the index is optimized. </p>
 * <p>The provided IndexReaders are not closed.</p>
 */
public synchronized void addIndexes(IndexReader[] readers)
 throws IOException {
 optimize();                      // start with zero or 1 seg
 String mergedName = newSegmentName();
 SegmentMerger merger = new SegmentMerger(directory, mergedName, false);
 if (segmentInfos.size() == 1)                 // add existing index, if any
  merger.add(new SegmentReader(segmentInfos.info(0)));
 for (int i = 0; i < readers.length; i++)      // add new indexes
  merger.add(readers[i]);
 int docCount = merger.merge();                // merge 'em
 segmentInfos.setSize(0);                      // pop old infos & add new
 segmentInfos.addElement(new SegmentInfo(mergedName, docCount, directory));
 synchronized (directory) {			  // in- & inter-process sync
  new Lock.With(directory.makeLock("commit.lock"), COMMIT_LOCK_TIMEOUT) {
  public Object doBody() throws IOException {
   segmentInfos.write(directory);      // commit changes
   return null;
  }
 }.run();
 }
}

merger.add(sReader);
merger.add(readers[i]);

merger.add(sReader);
merger.add(readers[i]);

SegmentInfo si = sourceSegmentsClone.info(i);
IndexReader reader = SegmentReader.get(true, si, MERGE_READ_BUFFER_SIZE, merge.mergeDocStores); // no need to set deleter (yet)
merger.add(reader);
totDocCount += reader.numDocs();

SegmentInfo si = sourceSegmentsClone.info(i);
IndexReader reader = SegmentReader.get(true, si, MERGE_READ_BUFFER_SIZE, merge.mergeDocStores); // no need to set deleter (yet)
merger.add(reader);
totDocCount += reader.numDocs();