/// <summary>根据聚合条件获取统计信息</summary>
public virtual async Task <SearchStatisticsResult> StatisticsAsync(SearchStatisticsRequest request)
{
var provider = new SearchProvider <Metadata>();
SearchGroupRules groups = new SearchGroupRules();
groups.Top = int.MaxValue / 2;
groups.Fields = request.Groups;
var aggs = provider.BuildAggs(groups);
var searchresponse = await _esAccess.PagingQueryAsync(null, null, null, aggs, 0, 0);
SearchStatisticsResult result = new SearchStatisticsResult();
var groupResult = new Dictionary <string, Dictionary <string, long?> >();
foreach (var agg in searchresponse.Aggregations)
{
var aggregates = agg.Value.As <BucketAggregate>().Items;
Dictionary <string, long?> dic = new Dictionary <string, long?>();
foreach (var aggregate in aggregates)
{
var keyedBucket = aggregate as Nest.KeyedBucket <object>;
if (keyedBucket != null)
{
dic.Add(keyedBucket.Key.ToString(), keyedBucket.DocCount);
}
}
groupResult.Add(agg.Key, dic);
}
result.Groups = groupResult;
return(result);
}
/// <summary>按短语搜索</summary>
public virtual async Task <SearchResult> SearchAsync(SearchRequest request)
{
var _provider = new SearchProvider <Metadata>();
var filterQuery = _provider.BuildFilterQuery(request.Filter);
// var fulltextQuery = _provider.BuildFullTextQuery(request.Sentence, request.Ranks);
var fulltextQuery = _provider.BuildCustomScoreQuery(request.Sentence, request.Boost);
var query = _provider.CombineMustQuery(filterQuery, fulltextQuery);
var sort = _provider.BuildSort(request.Sort);
var aggs = _provider.BuildAggs(request.Group);
var fields = _provider.BuildFields(request.Fields);
var from = request.From;
var size = request.Size;
var searchresponse = await _esAccess.PagingQueryAsync(query, sort, fields, aggs, from, size);
var response = searchresponse.ToMetadataCollection();
if (searchresponse.Aggregations.Count <= 0)
{
return(await Task.FromResult(response));
}
var groups = new Dictionary <string, Dictionary <string, long?> >();
foreach (var agg in searchresponse.Aggregations)
{
var aggregates = agg.Value.As <BucketAggregate>().Items;
Dictionary <string, long?> dic = new Dictionary <string, long?>();
foreach (var aggregate in aggregates)
{
var keyedBucket = aggregate as Nest.KeyedBucket <object>;
if (keyedBucket != null)
{
dic.Add(keyedBucket.Key.ToString(), keyedBucket.DocCount);
}
}
groups.Add(agg.Key, dic);
}
response.Groups = groups;
return(await Task.FromResult(response));
}