在Nest 5.5.0中为属性设置not_analyzed

Z时代
2024-01-10
分类：问答

我试图通过Nest 5.5.0设置“ not_analyzed”索引类型，但我不知道该怎么做。

我的初始化：

var map = new CreateIndexDescriptor(INDEX_NAME)
     .Mappings(ms => ms.Map<Project>(m => m.AutoMap()));
var connectionSettings = new ConnectionSettings().DefaultIndex(INDEX_NAME);
_client = new ElasticClient(connectionSettings);
_client.Index(map);

和Project类：

[ElasticsearchType(Name = "project")]
public class Project
{
    public Guid Id { get; set; }
    [Text(Analyzer = "not_analyzed")]
    public string OwnerIdCode { get; set; }
}

在我通过Postman调用index / _mapping REST之后，这种初始化方式会创建某种奇怪的映射。在普通的“映射” JSON部分中，紧挨着“

createindexdescriptor”，具有几乎相同的数据。

"examinations4": { "mappings": { "project": { (...) }, "createindexdescriptor": { "properties": { "mappings": { "properties": { "project": { "properties": { "properties": { "properties": { "id": { "properties": { "type": { "type": "text", "fields": { "keyword": { "type": "keyword", "ignore_above": 256 } } } } }, "ownerIdCode": { "properties": { "analyzer": { "type": "text", "fields": { "keyword": { "type": "keyword", "ignore_above": 256 } } }, "type": { "type": "text", "fields": { "keyword": { "type": "keyword", "ignore_above": 256 } (...)

回答：

要在Elasticsearch

5.0+中设置未分析的字符串字段，您应该使用keyword类型，并在创建索引时使用CreateIndex()或在使用将第一个文档发送到索引之前传递映射Map<T>()。就您而言，我认为您正在寻找类似的东西

void Main()
{
    var connectionSettings = new ConnectionSettings()
        .DefaultIndex("default-index");
    var client = new ElasticClient(connectionSettings);
    client.CreateIndex("projects", c => c
        .Mappings(m => m
            .Map<Project>(mm => mm
                .AutoMap()
            )
        )
    );
}
[ElasticsearchType(Name = "project")]
public class Project
{
    [Keyword]
    public Guid Id { get; set; }
    [Keyword]
    public string OwnerIdCode { get; set; }
}