public virtual void TestOutOfOrderCollection()
{
Directory dir = new RAMDirectory();
IndexWriter writer = new IndexWriter(dir, null, MaxFieldLength.UNLIMITED);
for (int i = 0; i < 10; i++)
{
writer.AddDocument(new Document());
}
writer.Commit();
writer.Close();
bool[] inOrder = new bool[] { false, true };
System.String[] actualTSDCClass = new System.String[] { "OutOfOrderTopScoreDocCollector", "InOrderTopScoreDocCollector" };
// Save the original value to set later.
bool origVal = BooleanQuery.GetAllowDocsOutOfOrder();
BooleanQuery.SetAllowDocsOutOfOrder(true);
BooleanQuery bq = new BooleanQuery();
// Add a Query with SHOULD, since bw.scorer() returns BooleanScorer2
// which delegates to BS if there are no mandatory clauses.
bq.Add(new MatchAllDocsQuery(), Occur.SHOULD);
// Set minNrShouldMatch to 1 so that BQ will not optimize rewrite to return
// the clause instead of BQ.
bq.SetMinimumNumberShouldMatch(1);
try
{
IndexSearcher searcher = new IndexSearcher(dir);
for (int i = 0; i < inOrder.Length; i++)
{
TopDocsCollector tdc = TopScoreDocCollector.create(3, inOrder[i]);
Assert.AreEqual("Lucene.Net.Search.TopScoreDocCollector+" + actualTSDCClass[i], tdc.GetType().FullName);
searcher.Search(new MatchAllDocsQuery(), tdc);
ScoreDoc[] sd = tdc.TopDocs().ScoreDocs;
Assert.AreEqual(3, sd.Length);
for (int j = 0; j < sd.Length; j++)
{
Assert.AreEqual(j, sd[j].doc, "expected doc Id " + j + " found " + sd[j].doc);
}
}
}
finally
{
// Whatever happens, reset BooleanQuery.allowDocsOutOfOrder to the
// original value. Don't set it to false in case the implementation in BQ
// will change some day.
BooleanQuery.SetAllowDocsOutOfOrder(origVal);
}
}
/// <summary>alternate scorer skipTo(),skipTo(),next(),next(),skipTo(),skipTo(), etc
/// and ensure a hitcollector receives same docs and scores
/// </summary>
public static void CheckSkipTo(Query q, IndexSearcher s)
{
//System.out.println("Checking "+q);
if (BooleanQuery.GetAllowDocsOutOfOrder())
{
return; // in this case order of skipTo() might differ from that of next().
}
int skip_op = 0;
int next_op = 1;
int[][] orders = new int[][] { new int[] { next_op }, new int[] { skip_op }, new int[] { skip_op, next_op }, new int[] { next_op, skip_op }, new int[] { skip_op, skip_op, next_op, next_op }, new int[] { next_op, next_op, skip_op, skip_op }, new int[] { skip_op, skip_op, skip_op, next_op, next_op } };
for (int k = 0; k < orders.Length; k++)
{
int[] order = orders[k];
// System.out.print("Order:");for (int i = 0; i < order.length; i++)
// System.out.print(order[i]==skip_op ? " skip()":" next()");
// System.out.println();
int[] opidx = new int[] { 0 };
Weight w = q.Weight(s);
Scorer scorer = w.Scorer(s.GetIndexReader(), true, false);
if (scorer == null)
{
continue;
}
// FUTURE: ensure scorer.doc()==-1
int[] sdoc = new int[] { -1 };
float maxDiff = 1e-5f;
s.Search(q, new AnonymousClassCollector(order, opidx, skip_op, scorer, sdoc, maxDiff, q, s));
// make sure next call to scorer is false.
int op = order[(opidx[0]++) % order.Length];
// System.out.println(op==skip_op ? "last: skip()":"last: next()");
bool more = (op == skip_op?scorer.Advance(sdoc[0] + 1):scorer.NextDoc()) != DocIdSetIterator.NO_MORE_DOCS;
Assert.IsFalse(more);
}
}