/// <summary> A search implementation allowing sorting which spans a new thread for each
/// Searchable, waits for each search to complete and merges
/// the results back together.
/// </summary>
public override TopFieldDocs Search(Weight weight, Filter filter, int nDocs, Sort sort)
{
if (sort == null)
{
throw new ArgumentNullException("sort");
}
FieldDocSortedHitQueue hq = new FieldDocSortedHitQueue(nDocs);
object lockObj = new object();
Task <TopFieldDocs>[] tasks = new Task <TopFieldDocs> [searchables.Length];
for (int i = 0; i < searchables.Length; i++) // search each searchable
{
int cur = i;
tasks[i] =
Task <TopFieldDocs> .Factory.StartNew(
() => MultiSearcherCallableWithSort(ThreadLock.MonitorLock, lockObj, searchables[cur], weight, filter, nDocs, hq, sort, cur,
starts));
}
int totalHits = 0;
float maxScore = float.NegativeInfinity;
Task.WaitAll(tasks);
foreach (TopFieldDocs topFieldDocs in tasks.Select(x => x.Result))
{
totalHits += topFieldDocs.TotalHits;
maxScore = Math.Max(maxScore, topFieldDocs.MaxScore);
}
ScoreDoc[] scoreDocs = new ScoreDoc[hq.Size()];
for (int i = hq.Size() - 1; i >= 0; i--)
{
scoreDocs[i] = hq.Pop();
}
return(new TopFieldDocs(totalHits, scoreDocs, hq.GetFields(), maxScore));
}
/// <summary> A search implementation allowing sorting which spans a new thread for each
/// Searchable, waits for each search to complete and merges
/// the results back together.
/// </summary>
public override TopFieldDocs Search(Weight weight, Filter filter, int nDocs, Sort sort)
{
if (sort == null) throw new ArgumentNullException("sort");
FieldDocSortedHitQueue hq = new FieldDocSortedHitQueue(nDocs);
object lockObj = new object();
Task<TopFieldDocs>[] tasks = new Task<TopFieldDocs>[searchables.Length];
for (int i = 0; i < searchables.Length; i++) // search each searchable
{
int cur = i;
tasks[i] =
Task<TopFieldDocs>.Factory.StartNew(
() => MultiSearcherCallableWithSort(ThreadLock.MonitorLock, lockObj, searchables[cur], weight, filter, nDocs, hq, sort, cur,
starts));
}
int totalHits = 0;
float maxScore = float.NegativeInfinity;
Task.WaitAll(tasks);
foreach (TopFieldDocs topFieldDocs in tasks.Select(x => x.Result))
{
totalHits += topFieldDocs.TotalHits;
maxScore = Math.Max(maxScore, topFieldDocs.MaxScore);
}
ScoreDoc[] scoreDocs = new ScoreDoc[hq.Size()];
for (int i = hq.Size() - 1; i >= 0; i--)
scoreDocs[i] = hq.Pop();
return new TopFieldDocs(totalHits, scoreDocs, hq.GetFields(), maxScore);
}
/// <summary> A search implementation which executes each
/// <see cref="Searchable"/> in its own thread and waits for each search to complete
/// and merge the results back together.
/// </summary>
public override TopDocs Search(Weight weight, Filter filter, int nDocs)
{
HitQueue hq = new HitQueue(nDocs, false);
object lockObj = new object();
Task<TopDocs>[] tasks = new Task<TopDocs>[searchables.Length];
//search each searchable
for (int i = 0; i < searchables.Length; i++)
{
int cur = i;
tasks[i] =
Task.Factory.StartNew(() => MultiSearcherCallableNoSort(ThreadLock.MonitorLock, lockObj, searchables[cur], weight, filter,
nDocs, hq, cur, starts));
}
int totalHits = 0;
float maxScore = float.NegativeInfinity;
Task.WaitAll(tasks);
foreach(TopDocs topDocs in tasks.Select(x => x.Result))
{
totalHits += topDocs.TotalHits;
maxScore = Math.Max(maxScore, topDocs.MaxScore);
}
ScoreDoc[] scoreDocs = new ScoreDoc[hq.Size()];
for (int i = hq.Size() - 1; i >= 0; i--) // put docs in array
scoreDocs[i] = hq.Pop();
return new TopDocs(totalHits, scoreDocs, maxScore);
}
/// <summary></summary>
public TopDocs(int totalHits, ScoreDoc[] scoreDocs, float maxScore)
{
this.TotalHits = totalHits;
this.ScoreDocs = scoreDocs;
this.MaxScore = maxScore;
}
/// <summary>Constructs a TopDocs with a default maxScore=Float.NaN. </summary>
internal TopDocs(int totalHits, ScoreDoc[] scoreDocs):this(totalHits, scoreDocs, float.NaN)
{
}
public override TopFieldDocs Search(Weight weight, Filter filter, int n, Sort sort)
{
var hq = new FieldDocSortedHitQueue(n);
int totalHits = 0;
float maxScore = System.Single.NegativeInfinity;
var lockObj = new object();
for (int i = 0; i < searchables.Length; i++)
{
// search each searcher
// use NullLock, we don't care about synchronization for these
TopFieldDocs docs = MultiSearcherCallableWithSort(ThreadLock.NullLock, lockObj, searchables[i], weight, filter, n, hq, sort,
i, starts);
totalHits += docs.TotalHits;
maxScore = System.Math.Max(maxScore, docs.MaxScore);
}
ScoreDoc[] scoreDocs2 = new ScoreDoc[hq.Size()];
for (int i = hq.Size() - 1; i >= 0; i--)
// put docs in array
scoreDocs2[i] = hq.Pop();
return new TopFieldDocs(totalHits, scoreDocs2, hq.GetFields(), maxScore);
}
public override TopDocs Search(Weight weight, Filter filter, int nDocs)
{
HitQueue hq = new HitQueue(nDocs, false);
int totalHits = 0;
var lockObj = new object();
for (int i = 0; i < searchables.Length; i++)
{
// search each searcher
// use NullLock, we don't care about synchronization for these
TopDocs docs = MultiSearcherCallableNoSort(ThreadLock.NullLock, lockObj, searchables[i], weight, filter, nDocs, hq, i, starts);
totalHits += docs.TotalHits; // update totalHits
}
ScoreDoc[] scoreDocs2 = new ScoreDoc[hq.Size()];
for (int i = hq.Size() - 1; i >= 0; i--)
// put docs in array
scoreDocs2[i] = hq.Pop();
float maxScore = (totalHits == 0)?System.Single.NegativeInfinity:scoreDocs2[0].Score;
return new TopDocs(totalHits, scoreDocs2, maxScore);
}
/// <summary>Creates one of these objects.</summary>
/// <param name="totalHits"> Total number of hits for the query.
/// </param>
/// <param name="scoreDocs"> The top hits for the query.
/// </param>
/// <param name="fields"> The sort criteria used to find the top hits.
/// </param>
/// <param name="maxScore"> The maximum score encountered.
/// </param>
public TopFieldDocs(int totalHits, ScoreDoc[] scoreDocs, SortField[] fields, float maxScore):base(totalHits, scoreDocs, maxScore)
{
this.fields = fields;
}
