org.apache.lucene.search.FilteredQuery.RandomAccessFilterStrategy

public static class FilteredQuery.RandomAccessFilterStrategy extends FilteredQuery.FilterStrategy

A FilteredQuery.FilterStrategy that conditionally uses a random access filter if the given DocIdSet supports random access (returns a non-null value from DocIdSet.bits()) and useRandomAccess(Bits, int) returns true. Otherwise this strategy falls back to a "zig-zag join" ( FilteredQuery.LEAP_FROG_FILTER_FIRST_STRATEGY) strategy .

Constructor Details
- RandomAccessFilterStrategy
  
  public RandomAccessFilterStrategy()
Method Details
- filteredScorer
  
  public Scorer filteredScorer(AtomicReaderContext context, boolean scoreDocsInOrder, boolean topScorer, Weight weight, DocIdSet docIdSet) throws IOException
  
  Description copied from class: FilteredQuery.FilterStrategy
  
  Returns a filtered Scorer based on this strategy.
  
  Specified by:
  
  filteredScorer in class FilteredQuery.FilterStrategy
  
  Parameters:
  
  context - the AtomicReaderContext for which to return the Scorer.
  
  scoreDocsInOrder - specifies whether in-order scoring of documents is required. Note that if set to false (i.e., out-of-order scoring is required), this method can return whatever scoring mode it supports, as every in-order scorer is also an out-of-order one. However, an out-of-order scorer may not support DocIdSetIterator.nextDoc() and/or DocIdSetIterator.advance(int), therefore it is recommended to request an in-order scorer if use of these methods is required.
  
  topScorer - if true, Scorer.score(Collector) will be called; if false, DocIdSetIterator.nextDoc() and/or DocIdSetIterator.advance(int) will be called.
  
  weight - the FilteredQuery Weight to create the filtered scorer.
  
  docIdSet - the filter DocIdSet to apply
  
  Returns:
  
  a filtered scorer
  
  Throws:
  
  IOException - if an IOException occurs

Class FilteredQuery.RandomAccessFilterStrategy

Constructor Summary