/**
* Merges the given taxonomy and index directories and commits the changes to the given writers.
*/
public static void merge(
Directory srcIndexDir,
Directory srcTaxDir,
OrdinalMap map,
IndexWriter destIndexWriter,
DirectoryTaxonomyWriter destTaxWriter)
throws IOException {
// merge the taxonomies
destTaxWriter.addTaxonomy(srcTaxDir, map);
int ordinalMap[] = map.getMap();
FacetIndexingParams params = new DefaultFacetIndexingParams();
DirectoryReader reader = DirectoryReader.open(srcIndexDir, -1);
List<AtomicReaderContext> leaves = reader.leaves();
AtomicReader wrappedLeaves[] = new AtomicReader[leaves.size()];
for (int i = 0; i < leaves.size(); i++) {
wrappedLeaves[i] = new OrdinalMappingAtomicReader(leaves.get(i).reader(), ordinalMap, params);
}
try {
destIndexWriter.addIndexes(new MultiReader(wrappedLeaves));
// commit changes to taxonomy and index respectively.
destTaxWriter.commit();
destIndexWriter.commit();
} finally {
reader.close();
}
}
