Elasticsearch/NEST 6-将枚举存储为字符串 [英] Elasticsearch / NEST 6 - storing enums as string

问题描述

是否可以在NEST6中将枚举存储为字符串?

Is it possible to store enums as string in NEST6?

我已经尝试过了，但是似乎没有用.有什么建议吗?

I've tried this but it does not seem to work. Any suggestions?

var pool = new SingleNodeConnectionPool(new Uri(context.ConnectionString));
connectionSettings = new ConnectionSettings(pool, connection, SourceSerializer());

    private static ConnectionSettings.SourceSerializerFactory SourceSerializer()
    {
        return (builtin, settings) => new JsonNetSerializer(builtin, settings,
            () => new JsonSerializerSettings
            {
                Converters = new List<JsonConverter>
                {
                    new StringEnumConverter()
                }
            });
    }

推荐答案

使用 NEST.JsonNetSerializer包

如果要为所有枚举设置它，可以使用

If you'd like to set it for all enums, you can do so with

private static void Main()
{
    var pool = new SingleNodeConnectionPool(new Uri("http://localhost:9200"));
    var connectionSettings = new ConnectionSettings(
        pool, 
        (builtin, settings) => new JsonNetSerializer(builtin, settings,
            contractJsonConverters: new JsonConverter[] { new StringEnumConverter() }));

    var client = new ElasticClient(connectionSettings);

    client.Index(new Product { Foo = Foo.Bar }, i => i.Index("examples"));
}

public class Product
{
    public Foo Foo { get;set; }
}

public enum Foo
{
    Bar
}

产生类似

POST http://localhost:9200/examples/product
{
  "foo": "Bar"
}

我认为您尝试设置转换器的方式也应该起作用，而这是一个错误，实际上并非如此.我将解决一个问题.

I think the way that you're attempting to set converters should also work and is a bug that it doesn't. I'll open an issue to address.

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