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package com.rehome.mqttclienttemperature.entity;
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import io.swagger.annotations.ApiModelProperty;
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import lombok.Data;
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import org.hibernate.annotations.Proxy;
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import org.springframework.data.jpa.domain.support.AuditingEntityListener;
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import javax.persistence.*;
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import java.io.Serializable;
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import java.util.Date;
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@EntityListeners(AuditingEntityListener.class)
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@Proxy(lazy = false)
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@Data
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@Entity
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//普通索引,不指定索引名，表自动创建索引名
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//@Table(indexes = {@Index(columnList = "dataDate"),@Index(columnList = "locationDesc")})
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//普通索引,指定索引名,创建单个索引
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//在这个例子中，Temperature实体类通过@Table注解的indexes属性定义了一个名为idx_dataDate的索引，它覆盖了dataDate字段。这意味着在数据库层面，针对dataDate字段的查询将会利用这个索引，从而提高查询效率。
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//@Table(indexes = {@Index(name = "idx_dataDate", columnList = "dataDate")})
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//同时创建多个普通索引,注意每个索引名都不同
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//@Table(indexes = {@Index(name = "idx_dataDate", columnList = "dataDate"),@Index(name = "idx_locationDesc", columnList = "locationDesc")})
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//@Table(indexes = {@Index(name = "idx_dataDate", columnList = "dataDate"),@Index(name = "idx_locationDesc", columnList = "locationDesc"),@Index(name = "idx_dataHour", columnList = "dataHour"),@Index(name = "idx_dataMinute", columnList = "dataMinute")})
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//创建组合索引,注意每个索引名都相同
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//@Table(indexes = {@Index(name = "data_date_location_desc", columnList = "dataDate"),@Index(name = "data_date_location_desc", columnList = "locationDesc")})
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//同时创建普通索引和组合索引,注意普通索引每个索引名都不同，注意组合索引每个索引名都相同
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@Table(indexes = {@Index(name = "idx_dataDate", columnList = "dataDate"),@Index(name = "idx_locationDesc", columnList = "locationDesc"),@Index(name = "idx_dataHour", columnList = "dataHour"),@Index(name = "idx_dataMinute", columnList = "dataMinute"),@Index(name = "data_date_location_desc", columnList = "dataDate"),@Index(name = "data_date_location_desc", columnList = "locationDesc")})
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public class Temperature implements Serializable {
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@Id
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@GeneratedValue(strategy = GenerationType.SEQUENCE)
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@ApiModelProperty(value = "主键")
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private Long id;
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@ApiModelProperty(value = "温度")
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private Double temperature;
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@ApiModelProperty(value = "湿度")
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private Double humidity;
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@ApiModelProperty(value = "日期")
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@Column(length=20)
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private String dataDate;
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@ApiModelProperty(value = "时")
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@Column(length=20)
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private String dataHour;
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@ApiModelProperty(value = "分")
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@Column(length=20)
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private String dataMinute;
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@ApiModelProperty(value = "主题")
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@Column(length=60)
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private String topic;
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@ApiModelProperty(value = "位置描述")
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@Column(length=80)
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private String locationDesc;
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@ApiModelProperty(value = "时间")
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@Temporal(TemporalType.TIMESTAMP)
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private Date createDate;
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}
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