Example #1
0
 protected bool Equals(ToChildBlockJoinQuery other)
 {
     return(base.Equals(other) &&
            Equals(_origParentQuery, other._origParentQuery) &&
            _doScores == other._doScores &&
            Equals(_parentsFilter, other._parentsFilter));
 }
Example #2
0
        public override Query Rewrite(IndexReader reader)
        {
            Query parentRewrite = _parentQuery.Rewrite(reader);

            if (parentRewrite != _parentQuery)
            {
                Query rewritten = new ToChildBlockJoinQuery(_parentQuery, parentRewrite, _parentsFilter, _doScores);
                rewritten.Boost = Boost;
                return(rewritten);
            }

            return(this);
        }
Example #3
0
 public override bool Equals(object obj)
 {
     if (obj is ToChildBlockJoinQuery)
     {
         ToChildBlockJoinQuery other = (ToChildBlockJoinQuery)obj;
         return(_origParentQuery.Equals(other._origParentQuery) &&
                _parentsFilter.Equals(other._parentsFilter) &&
                _doScores == other._doScores &&
                base.Equals(other));
     }
     else
     {
         return(false);
     }
 }
Example #4
0
        public void TestAdvanceSingleDeletedParentNoChild()
        {
            Directory dir = NewDirectory();
            RandomIndexWriter w = new RandomIndexWriter(Random(), dir);

            // First doc with 1 children
            Document parentDoc = new Document();
            parentDoc.Add(NewStringField("parent", "1", Field.Store.NO));
            parentDoc.Add(NewStringField("isparent", "yes", Field.Store.NO));
            Document childDoc = new Document();
            childDoc.Add(NewStringField("child", "1", Field.Store.NO));
            w.AddDocuments(Arrays.AsList(childDoc, parentDoc));

            parentDoc = new Document();
            parentDoc.Add(NewStringField("parent", "2", Field.Store.NO));
            parentDoc.Add(NewStringField("isparent", "yes", Field.Store.NO));
            w.AddDocuments(Arrays.AsList(parentDoc));

            w.DeleteDocuments(new Term("parent", "2"));

            parentDoc = new Document();
            parentDoc.Add(NewStringField("parent", "2", Field.Store.NO));
            parentDoc.Add(NewStringField("isparent", "yes", Field.Store.NO));
            childDoc = new Document();
            childDoc.Add(NewStringField("child", "2", Field.Store.NO));
            w.AddDocuments(Arrays.AsList(childDoc, parentDoc));

            IndexReader r = w.Reader;
            w.Dispose();
            IndexSearcher s = NewSearcher(r);

            // Create a filter that defines "parent" documents in the index - in this case resumes
            Filter parentsFilter = new FixedBitSetCachingWrapperFilter(new QueryWrapperFilter(new TermQuery(new Term("isparent", "yes"))));

            Query parentQuery = new TermQuery(new Term("parent", "2"));

            ToChildBlockJoinQuery parentJoinQuery = new ToChildBlockJoinQuery(parentQuery, parentsFilter, Random().NextBoolean());
            TopDocs topdocs = s.Search(parentJoinQuery, 3);
            assertEquals(1, topdocs.TotalHits);

            r.Dispose();
            dir.Dispose();
        }
Example #5
0
        public void TestRandom()
        {
            // We build two indices at once: one normalized (which
            // ToParentBlockJoinQuery/Collector,
            // ToChildBlockJoinQuery can query) and the other w/
            // the same docs, just fully denormalized:
            Directory dir = NewDirectory();
            Directory joinDir = NewDirectory();

            int numParentDocs = TestUtil.NextInt(Random(), 100 * RANDOM_MULTIPLIER, 300 * RANDOM_MULTIPLIER);
            //final int numParentDocs = 30;

            // Values for parent fields:
            string[][] parentFields = GetRandomFields(numParentDocs / 2);
            // Values for child fields:
            string[][] childFields = GetRandomFields(numParentDocs);

            bool doDeletes = Random().NextBoolean();
            IList<int> toDelete = new List<int>();

            // TODO: parallel star join, nested join cases too!
            RandomIndexWriter w = new RandomIndexWriter(Random(), dir, Similarity, TimeZone);
            RandomIndexWriter joinW = new RandomIndexWriter(Random(), joinDir, Similarity, TimeZone);
            for (int parentDocID = 0; parentDocID < numParentDocs; parentDocID++)
            {
                Document parentDoc = new Document();
                Document parentJoinDoc = new Document();
                Field id = NewStringField("parentID", "" + parentDocID, Field.Store.YES);
                parentDoc.Add(id);
                parentJoinDoc.Add(id);
                parentJoinDoc.Add(NewStringField("isParent", "x", Field.Store.NO));
                for (int field = 0; field < parentFields.Length; field++)
                {
                    if (Random().NextDouble() < 0.9)
                    {
                        Field f = NewStringField("parent" + field, parentFields[field][Random().Next(parentFields[field].Length)], Field.Store.NO);
                        parentDoc.Add(f);
                        parentJoinDoc.Add(f);
                    }
                }

                if (doDeletes)
                {
                    parentDoc.Add(NewStringField("blockID", "" + parentDocID, Field.Store.NO));
                    parentJoinDoc.Add(NewStringField("blockID", "" + parentDocID, Field.Store.NO));
                }

                IList<Document> joinDocs = new List<Document>();

                if (VERBOSE)
                {
                    StringBuilder sb = new StringBuilder();
                    sb.Append("parentID=").Append(parentDoc.Get("parentID"));
                    for (int fieldID = 0; fieldID < parentFields.Length; fieldID++)
                    {
                        string parent = parentDoc.Get("parent" + fieldID);
                        if (parent != null)
                        {
                            sb.Append(" parent" + fieldID + "=" + parent);
                        }
                    }
                    Console.WriteLine("  " + sb);
                }

                int numChildDocs = TestUtil.NextInt(Random(), 1, 20);
                for (int childDocID = 0; childDocID < numChildDocs; childDocID++)
                {
                    // Denormalize: copy all parent fields into child doc:
                    Document childDoc = TestUtil.CloneDocument(parentDoc);
                    Document joinChildDoc = new Document();
                    joinDocs.Add(joinChildDoc);

                    Field childID = NewStringField("childID", "" + childDocID, Field.Store.YES);
                    childDoc.Add(childID);
                    joinChildDoc.Add(childID);

                    for (int childFieldID = 0; childFieldID < childFields.Length; childFieldID++)
                    {
                        if (Random().NextDouble() < 0.9)
                        {
                            Field f = NewStringField("child" + childFieldID, childFields[childFieldID][Random().Next(childFields[childFieldID].Length)], Field.Store.NO);
                            childDoc.Add(f);
                            joinChildDoc.Add(f);
                        }
                    }

                    if (VERBOSE)
                    {
                        StringBuilder sb = new StringBuilder();
                        sb.Append("childID=").Append(joinChildDoc.Get("childID"));
                        for (int fieldID = 0; fieldID < childFields.Length; fieldID++)
                        {
                            string child = joinChildDoc.Get("child" + fieldID);
                            if (child != null)
                            {
                                sb.Append(" child" + fieldID + "=" + child);
                            }
                        }
                        Console.WriteLine("    " + sb);
                    }

                    if (doDeletes)
                    {
                        joinChildDoc.Add(NewStringField("blockID", "" + parentDocID, Field.Store.NO));
                    }

                    w.AddDocument(childDoc);
                }

                // Parent last:
                joinDocs.Add(parentJoinDoc);
                joinW.AddDocuments(joinDocs);

                if (doDeletes && Random().Next(30) == 7)
                {
                    toDelete.Add(parentDocID);
                }
            }

            foreach (int deleteID in toDelete)
            {
                if (VERBOSE)
                {
                    Console.WriteLine("DELETE parentID=" + deleteID);
                }
                w.DeleteDocuments(new Term("blockID", "" + deleteID));
                joinW.DeleteDocuments(new Term("blockID", "" + deleteID));
            }

            IndexReader r = w.Reader;
            w.Dispose();
            IndexReader joinR = joinW.Reader;
            joinW.Dispose();

            if (VERBOSE)
            {
                Console.WriteLine("TEST: reader=" + r);
                Console.WriteLine("TEST: joinReader=" + joinR);

                for (int docIDX = 0; docIDX < joinR.MaxDoc; docIDX++)
                {
                    Console.WriteLine("  docID=" + docIDX + " doc=" + joinR.Document(docIDX));
                }
            }

            IndexSearcher s = NewSearcher(r);

            IndexSearcher joinS = new IndexSearcher(joinR);

            Filter parentsFilter = new FixedBitSetCachingWrapperFilter(new QueryWrapperFilter(new TermQuery(new Term("isParent", "x"))));

            int iters = 200 * RANDOM_MULTIPLIER;

            for (int iter = 0; iter < iters; iter++)
            {
                if (VERBOSE)
                {
                    Console.WriteLine("TEST: iter=" + (1 + iter) + " of " + iters);
                }

                Query childQuery;
                if (Random().Next(3) == 2)
                {
                    int childFieldID = Random().Next(childFields.Length);
                    childQuery = new TermQuery(new Term("child" + childFieldID, childFields[childFieldID][Random().Next(childFields[childFieldID].Length)]));
                }
                else if (Random().Next(3) == 2)
                {
                    BooleanQuery bq = new BooleanQuery();
                    childQuery = bq;
                    int numClauses = TestUtil.NextInt(Random(), 2, 4);
                    bool didMust = false;
                    for (int clauseIDX = 0; clauseIDX < numClauses; clauseIDX++)
                    {
                        Query clause;
                        BooleanClause.Occur occur;
                        if (!didMust && Random().NextBoolean())
                        {
                            occur = Random().NextBoolean() ? BooleanClause.Occur.MUST : BooleanClause.Occur.MUST_NOT;
                            clause = new TermQuery(RandomChildTerm(childFields[0]));
                            didMust = true;
                        }
                        else
                        {
                            occur = BooleanClause.Occur.SHOULD;
                            int childFieldID = TestUtil.NextInt(Random(), 1, childFields.Length - 1);
                            clause = new TermQuery(new Term("child" + childFieldID, childFields[childFieldID][Random().Next(childFields[childFieldID].Length)]));
                        }
                        bq.Add(clause, occur);
                    }
                }
                else
                {
                    BooleanQuery bq = new BooleanQuery();
                    childQuery = bq;

                    bq.Add(new TermQuery(RandomChildTerm(childFields[0])), BooleanClause.Occur.MUST);
                    int childFieldID = TestUtil.NextInt(Random(), 1, childFields.Length - 1);
                    bq.Add(new TermQuery(new Term("child" + childFieldID, childFields[childFieldID][Random().Next(childFields[childFieldID].Length)])), Random().NextBoolean() ? BooleanClause.Occur.MUST : BooleanClause.Occur.MUST_NOT);
                }

                int x = Random().Next(4);
                ScoreMode agg;
                if (x == 0)
                {
                    agg = ScoreMode.None;
                }
                else if (x == 1)
                {
                    agg = ScoreMode.Max;
                }
                else if (x == 2)
                {
                    agg = ScoreMode.Total;
                }
                else
                {
                    agg = ScoreMode.Avg;
                }

                ToParentBlockJoinQuery childJoinQuery = new ToParentBlockJoinQuery(childQuery, parentsFilter, agg);

                // To run against the block-join index:
                Query parentJoinQuery;

                // Same query as parentJoinQuery, but to run against
                // the fully denormalized index (so we can compare
                // results):
                Query parentQuery;

                if (Random().NextBoolean())
                {
                    parentQuery = childQuery;
                    parentJoinQuery = childJoinQuery;
                }
                else
                {
                    // AND parent field w/ child field
                    BooleanQuery bq = new BooleanQuery();
                    parentJoinQuery = bq;
                    Term parentTerm = RandomParentTerm(parentFields[0]);
                    if (Random().NextBoolean())
                    {
                        bq.Add(childJoinQuery, BooleanClause.Occur.MUST);
                        bq.Add(new TermQuery(parentTerm), BooleanClause.Occur.MUST);
                    }
                    else
                    {
                        bq.Add(new TermQuery(parentTerm), BooleanClause.Occur.MUST);
                        bq.Add(childJoinQuery, BooleanClause.Occur.MUST);
                    }

                    BooleanQuery bq2 = new BooleanQuery();
                    parentQuery = bq2;
                    if (Random().NextBoolean())
                    {
                        bq2.Add(childQuery, BooleanClause.Occur.MUST);
                        bq2.Add(new TermQuery(parentTerm), BooleanClause.Occur.MUST);
                    }
                    else
                    {
                        bq2.Add(new TermQuery(parentTerm), BooleanClause.Occur.MUST);
                        bq2.Add(childQuery, BooleanClause.Occur.MUST);
                    }
                }

                Sort parentSort = GetRandomSort("parent", parentFields.Length);
                Sort childSort = GetRandomSort("child", childFields.Length);

                if (VERBOSE)
                {
                    Console.WriteLine("\nTEST: query=" + parentQuery + " joinQuery=" + parentJoinQuery + " parentSort=" + parentSort + " childSort=" + childSort);
                }

                // Merge both sorts:
                IList<SortField> sortFields = new List<SortField>(Arrays.AsList(parentSort.GetSort()));
                sortFields.AddRange(Arrays.AsList(childSort.GetSort()));
                Sort parentAndChildSort = new Sort(sortFields.ToArray());

                TopDocs results = s.Search(parentQuery, null, r.NumDocs, parentAndChildSort);

                if (VERBOSE)
                {
                    Console.WriteLine("\nTEST: normal index gets " + results.TotalHits + " hits");
                    ScoreDoc[] hits = results.ScoreDocs;
                    for (int hitIDX = 0; hitIDX < hits.Length; hitIDX++)
                    {
                        Document doc = s.Doc(hits[hitIDX].Doc);
                        //System.out.println("  score=" + hits[hitIDX].Score + " parentID=" + doc.Get("parentID") + " childID=" + doc.Get("childID") + " (docID=" + hits[hitIDX].Doc + ")");
                        Console.WriteLine("  parentID=" + doc.Get("parentID") + " childID=" + doc.Get("childID") + " (docID=" + hits[hitIDX].Doc + ")");
                        FieldDoc fd = (FieldDoc)hits[hitIDX];
                        if (fd.Fields != null)
                        {
                            Console.Write("    ");
                            foreach (object o in fd.Fields)
                            {
                                if (o is BytesRef)
                                {
                                    Console.Write(((BytesRef)o).Utf8ToString() + " ");
                                }
                                else
                                {
                                    Console.Write(o + " ");
                                }
                            }
                            Console.WriteLine();
                        }
                    }
                }

                bool trackScores;
                bool trackMaxScore;
                if (agg == ScoreMode.None)
                {
                    trackScores = false;
                    trackMaxScore = false;
                }
                else
                {
                    trackScores = Random().NextBoolean();
                    trackMaxScore = Random().NextBoolean();
                }
                ToParentBlockJoinCollector c = new ToParentBlockJoinCollector(parentSort, 10, trackScores, trackMaxScore);

                joinS.Search(parentJoinQuery, c);

                int hitsPerGroup = TestUtil.NextInt(Random(), 1, 20);
                //final int hitsPerGroup = 100;
                TopGroups<int> joinResults = c.GetTopGroups(childJoinQuery, childSort, 0, hitsPerGroup, 0, true);

                if (VERBOSE)
                {
                    Console.WriteLine("\nTEST: block join index gets " + (joinResults == null ? 0 : joinResults.Groups.Length) + " groups; hitsPerGroup=" + hitsPerGroup);
                    if (joinResults != null)
                    {
                        IGroupDocs<int>[] groups = joinResults.Groups;
                        for (int groupIDX = 0; groupIDX < groups.Length; groupIDX++)
                        {
                            IGroupDocs<int> group = groups[groupIDX];
                            if (group.GroupSortValues != null)
                            {
                                Console.Write("  ");
                                foreach (object o in group.GroupSortValues)
                                {
                                    if (o is BytesRef)
                                    {
                                        Console.Write(((BytesRef)o).Utf8ToString() + " ");
                                    }
                                    else
                                    {
                                        Console.Write(o + " ");
                                    }
                                }
                                Console.WriteLine();
                            }

                            assertNotNull(group.GroupValue);
                            Document parentDoc = joinS.Doc(group.GroupValue);
                            Console.WriteLine("  group parentID=" + parentDoc.Get("parentID") + " (docID=" + group.GroupValue + ")");
                            for (int hitIDX = 0; hitIDX < group.ScoreDocs.Length; hitIDX++)
                            {
                                Document doc = joinS.Doc(group.ScoreDocs[hitIDX].Doc);
                                //System.out.println("    score=" + group.ScoreDocs[hitIDX].Score + " childID=" + doc.Get("childID") + " (docID=" + group.ScoreDocs[hitIDX].Doc + ")");
                                Console.WriteLine("    childID=" + doc.Get("childID") + " child0=" + doc.Get("child0") + " (docID=" + group.ScoreDocs[hitIDX].Doc + ")");
                            }
                        }
                    }
                }

                if (results.TotalHits == 0)
                {
                    assertNull(joinResults);
                }
                else
                {
                    CompareHits(r, joinR, results, joinResults);
                    TopDocs b = joinS.Search(childJoinQuery, 10);
                    foreach (ScoreDoc hit in b.ScoreDocs)
                    {
                        Explanation explanation = joinS.Explain(childJoinQuery, hit.Doc);
                        Document document = joinS.Doc(hit.Doc - 1);
                        int childId = Convert.ToInt32(document.Get("childID"));
                        assertTrue(explanation.IsMatch);
                        assertEquals(hit.Score, explanation.Value, 0.0f);
                        assertEquals(string.Format("Score based on child doc range from {0} to {1}", hit.Doc - 1 - childId, hit.Doc - 1), explanation.Description);
                    }
                }

                // Test joining in the opposite direction (parent to
                // child):

                // Get random query against parent documents:
                Query parentQuery2;
                if (Random().Next(3) == 2)
                {
                    int fieldID = Random().Next(parentFields.Length);
                    parentQuery2 = new TermQuery(new Term("parent" + fieldID, parentFields[fieldID][Random().Next(parentFields[fieldID].Length)]));
                }
                else if (Random().Next(3) == 2)
                {
                    BooleanQuery bq = new BooleanQuery();
                    parentQuery2 = bq;
                    int numClauses = TestUtil.NextInt(Random(), 2, 4);
                    bool didMust = false;
                    for (int clauseIDX = 0; clauseIDX < numClauses; clauseIDX++)
                    {
                        Query clause;
                        BooleanClause.Occur occur;
                        if (!didMust && Random().NextBoolean())
                        {
                            occur = Random().NextBoolean() ? BooleanClause.Occur.MUST : BooleanClause.Occur.MUST_NOT;
                            clause = new TermQuery(RandomParentTerm(parentFields[0]));
                            didMust = true;
                        }
                        else
                        {
                            occur = BooleanClause.Occur.SHOULD;
                            int fieldID = TestUtil.NextInt(Random(), 1, parentFields.Length - 1);
                            clause = new TermQuery(new Term("parent" + fieldID, parentFields[fieldID][Random().Next(parentFields[fieldID].Length)]));
                        }
                        bq.Add(clause, occur);
                    }
                }
                else
                {
                    BooleanQuery bq = new BooleanQuery();
                    parentQuery2 = bq;

                    bq.Add(new TermQuery(RandomParentTerm(parentFields[0])), BooleanClause.Occur.MUST);
                    int fieldID = TestUtil.NextInt(Random(), 1, parentFields.Length - 1);
                    bq.Add(new TermQuery(new Term("parent" + fieldID, parentFields[fieldID][Random().Next(parentFields[fieldID].Length)])), Random().NextBoolean() ? BooleanClause.Occur.MUST : BooleanClause.Occur.MUST_NOT);
                }

                if (VERBOSE)
                {
                    Console.WriteLine("\nTEST: top down: parentQuery2=" + parentQuery2);
                }

                // Maps parent query to child docs:
                ToChildBlockJoinQuery parentJoinQuery2 = new ToChildBlockJoinQuery(parentQuery2, parentsFilter, Random().NextBoolean());

                // To run against the block-join index:
                Query childJoinQuery2;

                // Same query as parentJoinQuery, but to run against
                // the fully denormalized index (so we can compare
                // results):
                Query childQuery2;

                // apply a filter to children
                Filter childFilter2, childJoinFilter2;

                if (Random().NextBoolean())
                {
                    childQuery2 = parentQuery2;
                    childJoinQuery2 = parentJoinQuery2;
                    childFilter2 = null;
                    childJoinFilter2 = null;
                }
                else
                {
                    Term childTerm = RandomChildTerm(childFields[0]);
                    if (Random().NextBoolean()) // filtered case
                    {
                        childJoinQuery2 = parentJoinQuery2;
                        Filter f = new QueryWrapperFilter(new TermQuery(childTerm));
                        childJoinFilter2 = Random().NextBoolean() ? new FixedBitSetCachingWrapperFilter(f) : f;
                    }
                    else
                    {
                        childJoinFilter2 = null;
                        // AND child field w/ parent query:
                        BooleanQuery bq = new BooleanQuery();
                        childJoinQuery2 = bq;
                        if (Random().NextBoolean())
                        {
                            bq.Add(parentJoinQuery2, BooleanClause.Occur.MUST);
                            bq.Add(new TermQuery(childTerm), BooleanClause.Occur.MUST);
                        }
                        else
                        {
                            bq.Add(new TermQuery(childTerm), BooleanClause.Occur.MUST);
                            bq.Add(parentJoinQuery2, BooleanClause.Occur.MUST);
                        }
                    }

                    if (Random().NextBoolean()) // filtered case
                    {
                        childQuery2 = parentQuery2;
                        Filter f = new QueryWrapperFilter(new TermQuery(childTerm));
                        childFilter2 = Random().NextBoolean() ? new FixedBitSetCachingWrapperFilter(f) : f;
                    }
                    else
                    {
                        childFilter2 = null;
                        BooleanQuery bq2 = new BooleanQuery();
                        childQuery2 = bq2;
                        if (Random().NextBoolean())
                        {
                            bq2.Add(parentQuery2, BooleanClause.Occur.MUST);
                            bq2.Add(new TermQuery(childTerm), BooleanClause.Occur.MUST);
                        }
                        else
                        {
                            bq2.Add(new TermQuery(childTerm), BooleanClause.Occur.MUST);
                            bq2.Add(parentQuery2, BooleanClause.Occur.MUST);
                        }
                    }
                }

                Sort childSort2 = GetRandomSort("child", childFields.Length);

                // Search denormalized index:
                if (VERBOSE)
                {
                    Console.WriteLine("TEST: run top down query=" + childQuery2 + " filter=" + childFilter2 + " sort=" + childSort2);
                }
                TopDocs results2 = s.Search(childQuery2, childFilter2, r.NumDocs, childSort2);
                if (VERBOSE)
                {
                    Console.WriteLine("  " + results2.TotalHits + " totalHits:");
                    foreach (ScoreDoc sd in results2.ScoreDocs)
                    {
                        Document doc = s.Doc(sd.Doc);
                        Console.WriteLine("  childID=" + doc.Get("childID") + " parentID=" + doc.Get("parentID") + " docID=" + sd.Doc);
                    }
                }

                // Search join index:
                if (VERBOSE)
                {
                    Console.WriteLine("TEST: run top down join query=" + childJoinQuery2 + " filter=" + childJoinFilter2 + " sort=" + childSort2);
                }
                TopDocs joinResults2 = joinS.Search(childJoinQuery2, childJoinFilter2, joinR.NumDocs, childSort2);
                if (VERBOSE)
                {
                    Console.WriteLine("  " + joinResults2.TotalHits + " totalHits:");
                    foreach (ScoreDoc sd in joinResults2.ScoreDocs)
                    {
                        Document doc = joinS.Doc(sd.Doc);
                        Document parentDoc = GetParentDoc(joinR, parentsFilter, sd.Doc);
                        Console.WriteLine("  childID=" + doc.Get("childID") + " parentID=" + parentDoc.Get("parentID") + " docID=" + sd.Doc);
                    }
                }

                CompareChildHits(r, joinR, results2, joinResults2);
            }

            r.Dispose();
            joinR.Dispose();
            dir.Dispose();
            joinDir.Dispose();
        }
Example #6
0
        public void TestSimple()
        {
            Directory dir = NewDirectory();
            RandomIndexWriter w = new RandomIndexWriter(Random(), dir, Similarity, TimeZone);

            IList<Document> docs = new List<Document>();

            docs.Add(MakeJob("java", 2007));
            docs.Add(MakeJob("python", 2010));
            docs.Add(MakeResume("Lisa", "United Kingdom"));
            w.AddDocuments(docs);

            docs.Clear();
            docs.Add(MakeJob("ruby", 2005));
            docs.Add(MakeJob("java", 2006));
            docs.Add(MakeResume("Frank", "United States"));
            w.AddDocuments(docs);

            IndexReader r = w.Reader;
            w.Dispose();
            IndexSearcher s = NewSearcher(r);

            // Create a filter that defines "parent" documents in the index - in this case resumes
            Filter parentsFilter = new FixedBitSetCachingWrapperFilter(new QueryWrapperFilter(new TermQuery(new Term("docType", "resume"))));

            // Define child document criteria (finds an example of relevant work experience)
            BooleanQuery childQuery = new BooleanQuery();
            childQuery.Add(new BooleanClause(new TermQuery(new Term("skill", "java")), BooleanClause.Occur.MUST));
            childQuery.Add(new BooleanClause(NumericRangeQuery.NewIntRange("year", 2006, 2011, true, true), BooleanClause.Occur.MUST));

            // Define parent document criteria (find a resident in the UK)
            Query parentQuery = new TermQuery(new Term("country", "United Kingdom"));

            // Wrap the child document query to 'join' any matches
            // up to corresponding parent:
            ToParentBlockJoinQuery childJoinQuery = new ToParentBlockJoinQuery(childQuery, parentsFilter, ScoreMode.Avg);

            // Combine the parent and nested child queries into a single query for a candidate
            BooleanQuery fullQuery = new BooleanQuery();
            fullQuery.Add(new BooleanClause(parentQuery, BooleanClause.Occur.MUST));
            fullQuery.Add(new BooleanClause(childJoinQuery, BooleanClause.Occur.MUST));

            ToParentBlockJoinCollector c = new ToParentBlockJoinCollector(Sort.RELEVANCE, 1, true, true);

            s.Search(fullQuery, c);

            TopGroups<int> results = c.GetTopGroups(childJoinQuery, null, 0, 10, 0, true);
            assertFalse(float.IsNaN(results.MaxScore));

            //assertEquals(1, results.totalHitCount);
            assertEquals(1, results.TotalGroupedHitCount);
            assertEquals(1, results.Groups.Length);

            IGroupDocs<int> group = results.Groups[0];
            assertEquals(1, group.TotalHits);
            assertFalse(float.IsNaN(group.Score));

            Document childDoc = s.Doc(group.ScoreDocs[0].Doc);
            //System.out.println("  doc=" + group.ScoreDocs[0].Doc);
            assertEquals("java", childDoc.Get("skill"));
            assertNotNull(group.GroupValue);
            Document parentDoc = s.Doc(group.GroupValue);
            assertEquals("Lisa", parentDoc.Get("name"));


            //System.out.println("TEST: now test up");

            // Now join "up" (map parent hits to child docs) instead...:
            ToChildBlockJoinQuery parentJoinQuery = new ToChildBlockJoinQuery(parentQuery, parentsFilter, Random().NextBoolean());
            BooleanQuery fullChildQuery = new BooleanQuery();
            fullChildQuery.Add(new BooleanClause(parentJoinQuery, BooleanClause.Occur.MUST));
            fullChildQuery.Add(new BooleanClause(childQuery, BooleanClause.Occur.MUST));

            //System.out.println("FULL: " + fullChildQuery);
            TopDocs hits = s.Search(fullChildQuery, 10);
            assertEquals(1, hits.TotalHits);
            childDoc = s.Doc(hits.ScoreDocs[0].Doc);
            //System.out.println("CHILD = " + childDoc + " docID=" + hits.ScoreDocs[0].Doc);
            assertEquals("java", childDoc.Get("skill"));
            assertEquals(2007, childDoc.GetField("year").NumericValue);
            assertEquals("Lisa", GetParentDoc(r, parentsFilter, hits.ScoreDocs[0].Doc).Get("name"));

            // Test with filter on child docs:
            assertEquals(0, s.Search(fullChildQuery, new QueryWrapperFilter(new TermQuery(new Term("skill", "foosball"))), 1).TotalHits);

            r.Dispose();
            dir.Dispose();
        }
 protected bool Equals(ToChildBlockJoinQuery other)
 {
     return base.Equals(other) &&
         Equals(_origParentQuery, other._origParentQuery) &&
         _doScores == other._doScores &&
         Equals(_parentsFilter, other._parentsFilter);
 }
        public override Query Rewrite(IndexReader reader)
        {
            Query parentRewrite = _parentQuery.Rewrite(reader);
            if (parentRewrite != _parentQuery)
            {
                Query rewritten = new ToChildBlockJoinQuery(_parentQuery, parentRewrite, _parentsFilter, _doScores);
                rewritten.Boost = Boost;
                return rewritten;
            }

            return this;
        }
 public void TestAdvanceValidationForToChildBjq()
 {
     int randomChildNumber = GetRandomChildNumber(0);
     // we need to make advance method meet wrong document, so random child number
     // in BJQ must be greater than child number in Boolean clause
     int nextRandomChildNumber = GetRandomChildNumber(randomChildNumber);
     Query parentQueryWithRandomChild = CreateParentsQueryWithOneChild(nextRandomChildNumber);
     var blockJoinQuery = new ToChildBlockJoinQuery(parentQueryWithRandomChild, ParentsFilter, false);
     // advance() method is used by ConjunctionScorer, so we need to create Boolean conjunction query
     var conjunctionQuery = new BooleanQuery();
     var childQuery = new WildcardQuery(new Term("child", CreateFieldValue(randomChildNumber)));
     conjunctionQuery.Add(new BooleanClause(childQuery, BooleanClause.Occur.MUST));
     conjunctionQuery.Add(new BooleanClause(blockJoinQuery, BooleanClause.Occur.MUST));
     
     var ex = Throws<InvalidOperationException>(() => IndexSearcher.Search(conjunctionQuery, 1));
     StringAssert.Contains(ToChildBlockJoinQuery.InvalidQueryMessage, ex.Message);
 }
        public void TestNextDocValidationForToChildBjq()
        {
            Query parentQueryWithRandomChild = CreateParentsQueryWithOneChild(GetRandomChildNumber(0));
            var blockJoinQuery = new ToChildBlockJoinQuery(parentQueryWithRandomChild, ParentsFilter, false);

            var ex = Throws<InvalidOperationException>(() => IndexSearcher.Search(blockJoinQuery, 1));
            StringAssert.Contains(ToChildBlockJoinQuery.InvalidQueryMessage, ex.Message);
        }