public override async Task <IEnumerable <ArtifactSearchResult> > GetSemanticSearchSuggestions(SearchEngineParameters searchEngineParameters)
{
try
{
var index = await SemanticSearchRepository.GetSemanticSearchIndex();
if (String.IsNullOrEmpty(index))
{
// Returning empty results when index has not been created yet.
return(new List <ArtifactSearchResult>());
}
PerformIndexHealthCheck(index);
// Setting default index name on the connection, otherwise the search request will fail
_elasticClient.ConnectionSettings.DefaultIndices.Clear();
_elasticClient.ConnectionSettings.DefaultIndices.Add(typeof(SemanticSearchItem), index);
var searchText = await SemanticSearchRepository.GetSemanticSearchText(searchEngineParameters.ArtifactId,
searchEngineParameters.UserId);
// Create the bool query descripter that just searchs for the searchText we constructed
var boolQueryDescriptor = new BoolQueryDescriptor <SemanticSearchItem>();
boolQueryDescriptor.Must(GetMoreLikeThisQuery(searchText));
// Dont return back result for the current artifact id we're searching against
boolQueryDescriptor.MustNot(GetArtifactIdMatchQuery(searchEngineParameters.ArtifactId));
// If not instance admin, use the list of accessible project ids to filter out, otherwise no need to filter
if (!searchEngineParameters.IsInstanceAdmin)
{
boolQueryDescriptor.Filter(GetContainsProjectIdsQuery(searchEngineParameters.AccessibleProjectIds));
}
// Creates the search descriptor
var searchDescriptor = new SearchDescriptor <SemanticSearchItem>();
searchDescriptor.Index(index).Size(searchEngineParameters.PageSize).Query(q => q.Bool(b => boolQueryDescriptor));
var results = await _elasticClient.SearchAsync <SemanticSearchItem>(searchDescriptor);
var hits = results.Hits;
var itemIds = new List <int>();
hits.ForEach(a =>
{
int output;
if (Int32.TryParse(a.Id, out output))
{
itemIds.Add(output);
}
});
// parse the artifact ids into a artifactsearchresult to return to the caller
return(await GetArtifactSearchResultsFromItemIds(itemIds.Distinct().ToList(), searchEngineParameters.UserId));
}
catch (Exception ex)
{
if (ex is ElasticsearchConfigurationException)
{
throw;
}
throw new ElasticsearchException(I18NHelper.FormatInvariant("Elastic search failed to process search. Exception:{0}", ex));
}
}
