Lucene.Net.Search.TestShardSearching.AssertSame C# (CSharp) Method

        private PreviousSearchState AssertSame(IndexSearcher mockSearcher, NodeState.ShardIndexSearcher shardSearcher, Query q, Sort sort, PreviousSearchState state)
        {
            int numHits = TestUtil.NextInt(Random(), 1, 100);
            if (state != null && state.SearchAfterLocal == null)
            {
                // In addition to what we last searched:
                numHits += state.NumHitsPaged;
            }

            if (VERBOSE)
            {
                Console.WriteLine("TEST: query=" + q + " sort=" + sort + " numHits=" + numHits);
                if (state != null)
                {
                    Console.WriteLine("  prev: searchAfterLocal=" + state.SearchAfterLocal + " searchAfterShard=" + state.SearchAfterShard + " numHitsPaged=" + state.NumHitsPaged);
                }
            }

            // Single (mock local) searcher:
            TopDocs hits;
            if (sort == null)
            {
                if (state != null && state.SearchAfterLocal != null)
                {
                    hits = mockSearcher.SearchAfter(state.SearchAfterLocal, q, numHits);
                }
                else
                {
                    hits = mockSearcher.Search(q, numHits);
                }
            }
            else
            {
                hits = mockSearcher.Search(q, numHits, sort);
            }

            // Shard searcher
            TopDocs shardHits;
            if (sort == null)
            {
                if (state != null && state.SearchAfterShard != null)
                {
                    shardHits = shardSearcher.SearchAfter(state.SearchAfterShard, q, numHits);
                }
                else
                {
                    shardHits = shardSearcher.Search(q, numHits);
                }
            }
            else
            {
                shardHits = shardSearcher.Search(q, numHits, sort);
            }

            int numNodes = shardSearcher.NodeVersions.Length;
            int[] @base = new int[numNodes];
            IList<IndexReaderContext> subs = mockSearcher.TopReaderContext.Children;
            Assert.AreEqual(numNodes, subs.Count);

            for (int nodeID = 0; nodeID < numNodes; nodeID++)
            {
                @base[nodeID] = subs[nodeID].DocBaseInParent;
            }

            if (VERBOSE)
            {
                /*
                for(int shardID=0;shardID<shardSearchers.Length;shardID++) {
                  System.out.println("  shard=" + shardID + " maxDoc=" + shardSearchers[shardID].searcher.getIndexReader().MaxDoc);
                }
                */
                Console.WriteLine("  single searcher: " + hits.TotalHits + " totalHits maxScore=" + hits.MaxScore);
                for (int i = 0; i < hits.ScoreDocs.Length; i++)
                {
                    ScoreDoc sd = hits.ScoreDocs[i];
                    Console.WriteLine("    doc=" + sd.Doc + " score=" + sd.Score);
                }
                Console.WriteLine("  shard searcher: " + shardHits.TotalHits + " totalHits maxScore=" + shardHits.MaxScore);
                for (int i = 0; i < shardHits.ScoreDocs.Length; i++)
                {
                    ScoreDoc sd = shardHits.ScoreDocs[i];
                    Console.WriteLine("    doc=" + sd.Doc + " (rebased: " + (sd.Doc + @base[sd.ShardIndex]) + ") score=" + sd.Score + " shard=" + sd.ShardIndex);
                }
            }

            int numHitsPaged;
            if (state != null && state.SearchAfterLocal != null)
            {
                numHitsPaged = hits.ScoreDocs.Length;
                if (state != null)
                {
                    numHitsPaged += state.NumHitsPaged;
                }
            }
            else
            {
                numHitsPaged = hits.ScoreDocs.Length;
            }

            bool moreHits;

            ScoreDoc bottomHit;
            ScoreDoc bottomHitShards;

            if (numHitsPaged < hits.TotalHits)
            {
                // More hits to page through
                moreHits = true;
                if (sort == null)
                {
                    bottomHit = hits.ScoreDocs[hits.ScoreDocs.Length - 1];
                    ScoreDoc sd = shardHits.ScoreDocs[shardHits.ScoreDocs.Length - 1];
                    // Must copy because below we rebase:
                    bottomHitShards = new ScoreDoc(sd.Doc, sd.Score, sd.ShardIndex);
                    if (VERBOSE)
                    {
                        Console.WriteLine("  save bottomHit=" + bottomHit);
                    }
                }
                else
                {
                    bottomHit = null;
                    bottomHitShards = null;
                }
            }
            else
            {
                Assert.AreEqual(hits.TotalHits, numHitsPaged);
                bottomHit = null;
                bottomHitShards = null;
                moreHits = false;
            }

            // Must rebase so Assert.AreEqual passes:
            for (int hitID = 0; hitID < shardHits.ScoreDocs.Length; hitID++)
            {
                ScoreDoc sd = shardHits.ScoreDocs[hitID];
                sd.Doc += @base[sd.ShardIndex];
            }

            TestUtil.AssertEquals(hits, shardHits);

            if (moreHits)
            {
                // Return a continuation:
                return new PreviousSearchState(q, sort, bottomHit, bottomHitShards, shardSearcher.NodeVersions, numHitsPaged);
            }
            else
            {
                return null;
            }
        }
    }