[英]Insert List<object> into Elasticsearch with NEST
I have a lot of different collections of values I generate at runtime and want to send them to ElasticSearch. 我在运行时生成了很多不同的值集合,并希望将它们发送到ElasticSearch。 I can represent them as List<object>
or if really doesn't work any other way, as List<string>
. 我可以将它们表示为List<object>
或者如果确实不能以其他任何方式表示,则可以表示为List<string>
。 But I can't find any example how to do that. 但我找不到如何执行此操作的任何示例。 Here is an example of the code which doesn't work. 这是无效的代码示例。 There is probably a lot wrong with it, so any additional pointers are highly appreciated. 可能有很多错误,因此非常感谢其他指针。
var client = new ElasticClient(new Uri("http://localhost:9200"));
client.CreateIndex("testentry");
var values = new List<object> {"StringValue", 123, DateTime.Now};
var indexResponse = client.Index(values, descriptor => descriptor.Index("testentry"));
Console.WriteLine(indexResponse.DebugInformation);
Which results in: 结果是:
Invalid NEST response built from a unsuccessful low level call on POST: /testentry/list%601
# Audit trail of this API call:
- [1] BadResponse: Node: http://localhost:9200/ Took: 00:00:00.0600035
# ServerError: ServerError: 400Type: mapper_parsing_exception Reason: "failed to parse" CausedBy: "Type: not_x_content_exception Reason: "Compressor detection can only be called on some xcontent bytes or compressed xcontent bytes""
and 和
[2016-09-17 14:16:20,955][DEBUG][action.index ] [Gin Genie] failed to execute [index {[t
estentry][list`1][AVc4E3HaPglqpoLcosDo], source[_na_]}] on [[testentry][1]]
MapperParsingException[failed to parse]; nested: NotXContentException[Compressor detection can only
be called on some xcontent bytes or compressed xcontent bytes];
at org.elasticsearch.index.mapper.DocumentParser.parseDocument(DocumentParser.java:156)
I'm using Elasticsearch.Net 2.4.3 and NEST 2.4.3. 我正在使用Elasticsearch.Net 2.4.3和NEST 2.4.3。
Arrays with a mixture of datatypes are not supported. 不支持混合使用数据类型的数组 。
You could convert all of the values to strings: 您可以将所有值转换为字符串:
client.CreateIndex("testentry");
var values = new List<string> { "StringValue", "123", DateTime.Now.ToString() };
var indexResponse = client.Index(new { Values = values}, descriptor => descriptor.Index("testentry").Type("test"));
Or specify the fields that the values should be indexed to: 或指定应将值建立索引的字段:
client.CreateIndex("testentry");
var values = new { Field1 = "StringValue", Field2 = 123, Field3 = DateTime.Now };
var indexResponse = client.Index(values, descriptor => descriptor.Index("testentry").Type("test"));
Consider specifying the type of the document with the IndexDescriptor or create a class for the document. 考虑使用IndexDescriptor指定文档的类型,或为文档创建一个类。
In addition to Henrik's answer , you could also index values in a Dictionary<string, object>
除了Henrik的答案 ,您还可以在Dictionary<string, object>
索引值
public class MyType
{
public MyType()
{
Values = new Dictionary<string, object>();
}
public Dictionary<string, object> Values { get; private set; }
}
void Main()
{
var pool = new SingleNodeConnectionPool(new Uri("http://localhost:9200"));
var connectionSettings = new ConnectionSettings(pool);
var client = new ElasticClient(connectionSettings);
var myType = new MyType
{
Values =
{
{ "value1", "StringValue" },
{ "value2", 123 },
{ "value3", DateTime.Now },
}
};
client.Index(myType, i => i.Index("index-name"));
}
The Dictionary<string,object>
will be serialized to a json object with property names to match the dictionary keys Dictionary<string,object>
将被序列化为具有属性名称以匹配字典键的json对象
{
"values": {
"value1": "StringValue",
"value2": 123,
"value3": "2016-09-18T18:41:48.7344837+10:00"
}
}
Within Elasticsearch, the mapping will be inferred as an object type . 在Elasticsearch中,映射将被推断为对象类型 。
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