Question

我正在使用Nest 6.5.4。我无法对索引中的特定文档执行脚本更新。我已经尝试了很多方法，但是却遇到语法错误。我的查询如下。

var clientProvider = new ElasticClientProvider();
var projectModel = new ProjectModel();
 var res = clientProvider.Client.Update<ProjectModel>(projectModel, i => i
                .Index("attachment_index")
                .Type("attachments")
                .Id(projectId)
.Script(script=>script.Source("ctx._source.fileInfo.fileViewCount= ctx._source.fileInfo.fileViewCount + 1"))
                );

它引发错误“更新描述符没有ID的定义” 在Kibana中尝试使用相同的查询

POST attachment_index/attachments/1/_update
{
  "script": {
    "source":"ctx._source.fileInfo.fileViewCount += 1"
  }
}

我不知道我在哪里出错。

Answer 1

There is no .Id() method on UpdateDescriptor<T, TPartial> because an id is a required parameter for an Update API call, so this constraint is enforced through the constructors.

The first parameter to .Update<T>(...) is a DocumentPath<T> from which an index, type and id can be derived for the update API call. If the ProjectModel CLR POCO has an Id property with a value, this will be used for Id of the call. For example

public class ProjectModel 
{
    public int Id { get; set; }
}

var client = new ElasticClient();

var projectModel = new ProjectModel { Id = 1 };

var updateResponse = client.Update<ProjectModel>(projectModel, i => i
    .Index("attachment_index")
    .Type("attachments")
    .Script(script => script
        .Source("ctx._source.fileInfo.fileViewCount= ctx._source.fileInfo.fileViewCount + 1"))
);

which results in

POST http://localhost:9200/attachment_index/attachments/1/_update
{
  "script": {
    "source": "ctx._source.fileInfo.fileViewCount= ctx._source.fileInfo.fileViewCount + 1"
  }
}

If you want to explicitly specify the Id, you can pass the value for DocumentPath<T>

var updateResponse = client.Update<ProjectModel>(1, i => i
    .Index("attachment_index")
    .Type("attachments")
    .Script(script => script
        .Source("ctx._source.fileInfo.fileViewCount= ctx._source.fileInfo.fileViewCount + 1"))
);

Answer 2

client.UpdateAsync<ProjectModel, object>(
                new DocumentPath<ProjectModel>(id),
                u => u
                    .Index(ConfigurationManager.AppSettings.Get("indexname"))
                    .Type(ConfigurationManager.AppSettings.Get("indextype"))
                    .Doc(ProjectModel)
                    .DocAsUpsert()
                    .Refresh(Elasticsearch.Net.Refresh.True));

这将起作用，如果您仍然遇到任何问题，请告诉我。

用于.NET的NEST 6.5.4中按脚本的Elastic Search Update API

2 个答案: