/// <summary>
/// Sort result using specified field.
/// There can be several Sort parameters (order is important).
/// </summary>
/// <param name="field">The field. Use _score to sort by score.</param>
/// <param name="order">The sort order. By default order depends on chosen field (descending for "_scope", ascending for others) and field analyzer.</param>
/// <param name="missing">The missing value handling strategy. Use _last, _first or custom value.</param>
/// <param name="ignoreUnmapped"> The ignore_unmapped option allows to ignore fields that have no mapping and not sort by them. </param>
public Sort <T> Field(string field, SortDirection order = SortDirection.@default, string missing = null, bool ignoreUnmapped = false)
{
var fieldParams = new List <string>();
if (order != SortDirection.@default)
{
fieldParams.Add("'order': {0}".AltQuoteF(order.AsString().Quotate()));
}
if (!missing.IsNullOrEmpty())
{
fieldParams.Add("'missing': {0}".AltQuoteF(missing.Quotate()));
}
if (ignoreUnmapped)
{
fieldParams.Add("'ignore_unmapped': true".AltQuote());
}
if (fieldParams.Any())
{
RegisterJsonPart("{{ {0}: {{ {1} }} }}", field.Quotate(), fieldParams.JoinWithComma());
}
else
{
RegisterJsonPart(field.Quotate());
}
return(this);
}
/// <summary>
/// Sorting to perform. There can be several Sort parameters (order is important).
/// Use "_score" to sort by query score.
/// </summary>
public SearchCommand Sort(string fieldname, SortDirection direction = SortDirection.@default)
{
string value = fieldname;
if (direction != SortDirection.@default)
{
value += ":" + direction.AsString();
}
WithParameter("sort", value);
return(this);
}
private Sort <T> AddGeoDistancePart(string geoField, DistanceUnit unit, SortDirection order = SortDirection.@default)
{
var fieldParams = new List <string>();
fieldParams.Add("'unit': {0}".AltQuoteF(unit.AsString().Quotate()));
if (order != SortDirection.@default)
{
fieldParams.Add("'order': {0}".AltQuoteF(order.AsString().Quotate()));
}
fieldParams.Add(geoField);
RegisterJsonPart("{{ '_geo_distance': {{ {0} }} }}", fieldParams.JoinWithComma());
return(this);
}
public Sort <T> Script(string script, string type, SortDirection order, string[] @params)
{
var expression = "'_script' : {0}, 'type': {1}, 'order': {2}, 'params': {3} ".AltQuoteF(script, type.Quotate(), order.AsString().Quotate(), @params.JoinWithComma());
RegisterJsonPart(expression);
return(this);
}
public Sort <T> Script(string script, string type, string @params, SortDirection order)
{
var expression = "{{ '_script': {{ 'script': {0},'type': {1},'params': {2},'order': {3} }} }}".AltQuoteF(script.Quotate(), type.Quotate(), @params, order.AsString().Quotate());
RegisterJsonPart(expression);
return(this);
}