ElasticSearch NEST笔记 1. 什么是ElasticSearch? ElasticSearch is a powerful open source search and analytics engine that makes data easy to explore. 可以简单理解成索引加检索的工具,当然它功能多于此.ElasticSearch分为服务端与客户端,服务端提供REST API,客户端使用REST API. 2.怎么安装Elastic? 安装JDK(下载地址) 安装E…

 Creating a custom analyzer in ElasticSearch Nest client Question: Im very very new to elasticsearch using the nest client, I am creating an index with a custom analyzer, however when testing using analyze it does not seem to use the custom analyzer.…

Elasticsearch NEST – Examples for mapping between Query and C# During my training with Elasticsearch I would like to map a query with GET/POST method to C# syntax of NEST. It’s very helpful for me to see how NEST composes its internal queries and sen…

在使用NEST操作elasticsearch时,字段名会根据model中字段,默认为首字母小写. 如果需要调整NEST的默认明个规则,可以在 ConnectionSettings中进行自定义. var settings = new ConnectionSettings(node).DefaultFieldNameInferrer((name) => name); 这里是定义为原样输出. 也可以在model中声明一下: public class User { [String(Name="My…

NEST提供了多种映射方法,这里介绍下通过Attribute自定义映射. 一.简单实现 1.定义业务需要的POCO,并指定需要的Attribute [ElasticsearchType(Name = "student")] public class Student { [Nest.String(Index = FieldIndexOption.NotAnalyzed)] public string Id { get; set; } [Nest.String(Analyzer = &qu…

1. 什么是ElasticSearch? ElasticSearch is a powerful open source search and analytics engine that makes data easy to explore. 可以简单理解成索引加检索的工具,当然它功能多于此.ElasticSearch分为服务端与客户端,服务端提供REST API,客户端使用REST API. http://www.cnblogs.com/Angle-Louis/archive/2015/01/…

var client = ElasticsearchHelper.GetElasticClient("order");QueryContainer termQuery = new TermQuery() { Field = "lastname", Value = "求和" };var result = client.Search<Order>(s => s                .Aggregations(a =>…

本示例采用Elasticsearch+Nest 网上查了很多资料,发现用C#调用Elasticsearch搜索引擎的功能代码很分散,功能不完整,多半是非常简单的操作,没有成型的应用示例.比如新增或修改索引,都是发起一个request新增或修改一条数据,当一次性修改几千条数据时,发起的requst请求过多容易导致429 Too Many Request的错误,单个新增修改索引就非常不适用.其实Nest有批量新增.修改索引的功能,批量删除也可以.现将项目中采用Elasticsearch的C#代码分享…

ElasticSearch  NEST Client 操作Index var indexName="twitter"; var deleteIndexResponse = client.DeleteIndex(indexName);                var createIndexResponse = client.CreateIndex(indexName);                var getIndexResponse = client.GetIndex(in…

Although SQL Server's Full-Text search is good for searching text that is within a database, there are better ways of implementing search if the text is less-well structured, or comes from a wide variety of sources or formats. Ryszard takes ElasticSe…