public static async Task <List <string> > SimpleCompletionSuggest <T>(this IElasticClient client,
string index,
string keyword, string analyzer = null, int size = 20)
where T : CompletionSuggestIndexBase
{
var data = new List <string>();
if (!ValidateHelper.IsPlumpString(keyword))
{
return(data);
}
var sd = new CompletionSuggesterDescriptor <T>();
sd = sd.Field(f => f.CompletionSearchTitle).Text(keyword);
if (ValidateHelper.IsPlumpString(analyzer))
{
sd = sd.Analyzer(analyzer);
}
//允许错4个单词
sd = sd.Fuzzy(f => f.Fuzziness(Fuzziness.EditDistance(4)));
sd = sd.Size(size);
var s_name = "p";
var response = await client.SuggestAsync <T>(x => x.Index(index).Completion(s_name, f => sd));
response.ThrowIfException();
var list = response.Suggestions?[s_name]?.FirstOrDefault()?.Options?.ToList();
if (!ValidateHelper.IsPlumpList(list))
{
return(data);
}
var sggs = list.OrderByDescending(x => x.Score).Select(x => x.Text);
data.AddRange(sggs);
return(data.Where(x => ValidateHelper.IsPlumpString(x)).Distinct().ToList());
}
/// <summary>
/// 搜索建议
/// </summary>
public static IDictionary <string, Suggest[]> CompletionSuggest <T>(this IElasticClient client,
string index,
Expression <Func <T, object> > targetField, string text, string analyzer = null,
string highlight_pre = "<em>", string hightlight_post = "</em>", int size = 20)
where T : class, IElasticSearchIndex
{
var sd = new CompletionSuggesterDescriptor <T>();
sd = sd.Field(targetField).Text(text);
if (ValidateHelper.IsPlumpString(analyzer))
{
sd = sd.Analyzer(analyzer);
}
sd = sd.Size(size);
var response = client.Suggest <T>(x => x.Index(index).Completion("completion_suggest", f => sd));
response.ThrowIfException();
return(response.Suggestions);
}