Java 类org.apache.lucene.search.FilteredDocIdSetIterator 实例源码

private DocIdSetIterator iterateAllDocs()
{
    IndexReader reader = searcher.getIndexReader();
    final Bits liveDocs = MultiFields.getLiveDocs( reader );
    final DocIdSetIterator allDocs = DocIdSetIterator.all( reader.maxDoc() );
    if ( liveDocs == null )
    {
        return allDocs;
    }

    return new FilteredDocIdSetIterator( allDocs )
    {
        @Override
        protected boolean match( int doc )
        {
            return liveDocs.get( doc );
        }
    };
}