IQueryEngineFilter.AddOrUpdateMetaInfo

参数

返回

IQueryEngineFilter The current filter.

描述

Add or update additional information specific to the filter.

You can use this function to add additional information on the filter.

// Add a description to the filter
var descriptionKey = "desc";
var descriptionValue = "This filters the objects based on their id.";
var exampleKey = "example";
var exampleValue = "id>10 or id=2";
queryEngine.TryGetFilter("id", out var filter);
filter.AddOrUpdateMetaInfo(descriptionKey, descriptionValue)
    .AddOrUpdateMetaInfo(exampleKey, exampleValue);

You can then retrieve that information by accessing the metaInfo property directly.

var descriptionKey = "desc";
var allFilters = queryEngine.GetAllFilters();
var filtersWithDescription = allFilters.Where(f => f.metaInfo.ContainsKey(descriptionKey));

See metaInfo for a complete example.