.Net Core elasticsearch （一）实现CRUD（Simple.Elasticsearch1.0.2）扩展类

官方Nest使用繁琐、调用不方便，所有自己写了一套扩展类，使代码书写更简洁、调用更方便，操作更简单；请前往nuget搜索：Simple.Elasticsearch

• IndexName         --索引名称
• AliasNames        --别名
• ReplicasCount    --分片数量
• ShardsCount      --副本数量
• Format                --索引名格式（默认yyyy_MM）

    /// 

    /// 会员订单
    /// 
    [ElasticSearchIndex("user_order", AliasNames = new[] { "user_order" })]
    public class UserOrder : Idocument
    {
        /// 

        /// 订单ID
        /// 
        public string OrderID { get; set; }
        /// 

        /// 会员ID
        /// 
        public int UserID { get; set; }
        /// 

        /// 下单金额
        /// 
        public decimal Money { get; set; }
        /// 

        /// 创建时间
        /// 
        public DateTime CreateTime { get; set; }
    }

 IElasticClient client = new ElasticClient(new Uri("localhost:9100"));

            //新增
            client.Insert(new UserOrder { CreateTime = DateTime.Now, Money = 100, OrderID = "123456789", UserID = 1 });
            //查询会员1的并且金额大于100的订单，query仅拼接查询语句，没有进行真实查询
            var query = client.Query(c => c.Where(1, t => t.UserID),
                                                c => c.Where(100, t => t.Money, expressionType.GreaterThanOrEqual));
            //此处乃真实查询数据
            var list = client.Search(query).documents.ToList();

            //根据订单ID查询
            var order = client.FirstOrDefault(c => c.Where("123456789", t => t.OrderID));

            //查询订单是否存在
            bool exists = client.Any(c => c.Where("123456789", t => t.OrderID));

            //查询会员订单总数
            int count = client.Count(c => c.Where(1, t => t.UserID));