private async Task FacetedQuery(DocumentsOperationContext context, string indexName, OperationCancelToken token)
{
var query = FacetQuery.Parse(HttpContext.Request.Query, GetStart(), GetPageSize(Database.Configuration.Core.MaxPageSize));
var existingResultEtag = GetLongFromHeaders("If-None-Match");
long?facetsEtag = null;
if (query.FacetSetupDoc == null)
{
KeyValuePair <List <Facet>, long> facets;
if (HttpContext.Request.Method == HttpMethod.Post.Method)
{
var json = await context.ParseArrayToMemoryAsync(RequestBodyStream(), "facets", BlittableJsonDocumentBuilder.UsageMode.None);
facets = FacetedQueryParser.ParseFromJson(json);
}
else if (HttpContext.Request.Method == HttpMethod.Get.Method)
{
var f = GetStringQueryString("facets");
if (string.IsNullOrWhiteSpace(f))
{
throw new InvalidOperationException("One of the required parameters (facetDoc or facets) was not specified.");
}
facets = await FacetedQueryParser.ParseFromStringAsync(f, context);
}
else
{
throw new NotSupportedException($"Unsupported HTTP method '{HttpContext.Request.Method}' for Faceted Query.");
}
facetsEtag = facets.Value;
query.Facets = facets.Key;
}
var runner = new QueryRunner(Database, context);
var result = await runner.ExecuteFacetedQuery(indexName, query, facetsEtag, existingResultEtag, token);
if (result.NotModified)
{
HttpContext.Response.StatusCode = 304;
return;
}
HttpContext.Response.Headers[Constants.MetadataEtagField] = result.ResultEtag.ToInvariantString();
using (var writer = new BlittableJsonTextWriter(context, ResponseBodyStream()))
{
writer.WriteFacetedQueryResult(context, result);
}
}