content: package com.ctrip.framework.apollo.common.entity;
  
  import com.google.common.base.MoreObjects;
  import com.google.common.base.MoreObjects.ToStringHelper;
  
  import java.util.Date;
  
  import javax.persistence.Column;
  import javax.persistence.GeneratedValue;
  import javax.persistence.Id;
  import javax.persistence.Inheritance;
  import javax.persistence.InheritanceType;
  import javax.persistence.MappedSuperclass;
  import javax.persistence.PrePersist;
  import javax.persistence.PreRemove;
  import javax.persistence.PreUpdate;
  
  @MappedSuperclass
  @Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
  public abstract class BaseEntity {
  
    @Id
    @GeneratedValue
    @Column(name = "Id")
    private long id;
  
    @Column(name = "IsDeleted", columnDefinition = "Bit default '0'")
    protected boolean isDeleted = false;
  
    @Column(name = "DataChange_CreatedBy", nullable = false)
    private String dataChangeCreatedBy;
  
    @Column(name = "DataChange_CreatedTime", nullable = false)
    private Date dataChangeCreatedTime;
  
    @Column(name = "DataChange_LastModifiedBy")
    private String dataChangeLastModifiedBy;
  
    @Column(name = "DataChange_LastTime")
    private Date dataChangeLastModifiedTime;
  
    public String getDataChangeCreatedBy() {
      return dataChangeCreatedBy;
    }
  
    public Date getDataChangeCreatedTime() {
      return dataChangeCreatedTime;
    }
  
    public String getDataChangeLastModifiedBy() {
      return dataChangeLastModifiedBy;
    }
  
    public Date getDataChangeLastModifiedTime() {
      return dataChangeLastModifiedTime;
    }
  
    public long getId() {
      return id;
    }
  
    public boolean isDeleted() {
      return isDeleted;
    }
  
    public void setDataChangeCreatedBy(String dataChangeCreatedBy) {
      this.dataChangeCreatedBy = dataChangeCreatedBy;
    }
  
    public void setDataChangeCreatedTime(Date dataChangeCreatedTime) {
      this.dataChangeCreatedTime = dataChangeCreatedTime;
    }
  
    public void setDataChangeLastModifiedBy(String dataChangeLastModifiedBy) {
      this.dataChangeLastModifiedBy = dataChangeLastModifiedBy;
    }
  
    public void setDataChangeLastModifiedTime(Date dataChangeLastModifiedTime) {
      this.dataChangeLastModifiedTime = dataChangeLastModifiedTime;
    }
  
    public void setDeleted(boolean deleted) {
      isDeleted = deleted;
    }
  
    public void setId(long id) {
      this.id = id;
    }
  
    @PrePersist
    protected void prePersist() {
      if (this.dataChangeCreatedTime == null) dataChangeCreatedTime = new Date();
      if (this.dataChangeLastModifiedTime == null) dataChangeLastModifiedTime = new Date();
    }
  
    @PreUpdate
    protected void preUpdate() {
      this.dataChangeLastModifiedTime = new Date();
    }
  
    @PreRemove
    protected void preRemove() {
      this.dataChangeLastModifiedTime = new Date();
    }
  
    protected ToStringHelper toStringHelper() {
      return MoreObjects.toStringHelper(this).omitNullValues().add("id", id)
          .add("dataChangeCreatedBy", dataChangeCreatedBy)
          .add("dataChangeCreatedTime", dataChangeCreatedTime)
          .add("dataChangeLastModifiedBy", dataChangeLastModifiedBy)
          .add("dataChangeLastModifiedTime", dataChangeLastModifiedTime);
    }
  
    public String toString(){
      return toStringHelper().toString();
    }
  }
  