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- 增加 ISelect.WhereCascade 实现多表查询时，向每个表中附加条件；
- 增加 Examples 项目 base_entity，利用 BaseEntity 实现简洁的数据库操作；
This commit is contained in:
28810
163
Examples/base_entity/BaseEntity.cs
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163
Examples/base_entity/BaseEntity.cs
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using FreeSql;
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using FreeSql.DataAnnotations;
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using Newtonsoft.Json;
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using System;
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using System.Diagnostics;
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using System.Linq.Expressions;
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[Table(DisableSyncStructure = true)]
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public abstract class BaseEntity
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{
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private static Lazy<IFreeSql> _ormLazy = new Lazy<IFreeSql>(() =>
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{
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var orm = new FreeSqlBuilder()
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.UseAutoSyncStructure(true)
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.UseNoneCommandParameter(true)
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.UseConnectionString(DataType.Sqlite, "data source=test.db;max pool size=5")
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.Build();
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orm.Aop.CurdBefore += (s, e) => Trace.WriteLine(e.Sql + "\r\n");
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return orm;
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});
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public static IFreeSql Orm => _ormLazy.Value;
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/// <summary>
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/// 创建时间
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/// </summary>
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public DateTime CreateTime { get; set; }
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/// <summary>
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/// 更新时间
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/// </summary>
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public DateTime UpdateTime { get; set; }
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/// <summary>
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/// 逻辑删除
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/// </summary>
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public bool IsDeleted { get; set; }
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}
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[Table(DisableSyncStructure = true)]
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public abstract class BaseEntity<TEntity> : BaseEntity where TEntity : class
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{
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public static ISelect<TEntity> Select => Orm.Select<TEntity>().WhereCascade(a => (a as BaseEntity<TEntity>).IsDeleted == false);
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public static ISelect<TEntity> Where(Expression<Func<TEntity, bool>> exp) => Select.Where(exp);
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public static ISelect<TEntity> WhereIf(bool condition, Expression<Func<TEntity, bool>> exp) => Select.WhereIf(condition, exp);
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[JsonIgnore]
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protected IBaseRepository<TEntity> Repository { get; set; }
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bool UpdateIsDeleted(bool value)
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{
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if (this.Repository == null)
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return Orm.Update<TEntity>(this as TEntity).Set(a => (a as BaseEntity<TEntity>).IsDeleted, this.IsDeleted = value).ExecuteAffrows() == 1;
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this.IsDeleted = value;
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return this.Repository.Update(this as TEntity) == 1;
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}
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/// <summary>
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/// 删除数据
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/// </summary>
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/// <returns></returns>
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public virtual bool Delete() => this.UpdateIsDeleted(true);
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/// <summary>
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/// 恢复删除的数据
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/// </summary>
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/// <returns></returns>
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public virtual bool Restore() => this.UpdateIsDeleted(false);
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/// <summary>
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/// 附加实体，在更新数据时，只更新变化的部分
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/// </summary>
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public void Attach()
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{
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if (this.Repository == null) this.Repository = Orm.GetRepository<TEntity>();
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this.Repository.Attach(this as TEntity);
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}
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/// <summary>
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/// 更新数据
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/// </summary>
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/// <returns></returns>
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public virtual bool Update()
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{
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if (this.Repository == null)
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return Orm.Update<TEntity>().SetSource(this as TEntity).ExecuteAffrows() == 1;
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return this.Repository.Update(this as TEntity) == 1;
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}
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/// <summary>
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/// 插入数据
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/// </summary>
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public virtual void Insert()
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{
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if (this.Repository == null) this.Repository = Orm.GetRepository<TEntity>();
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this.Repository.Insert(this as TEntity);
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}
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/// <summary>
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/// 更新或插入
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/// </summary>
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/// <returns></returns>
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public virtual void Save()
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{
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if (this.Repository == null) this.Repository = Orm.GetRepository<TEntity>();
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this.Repository.InsertOrUpdate(this as TEntity);
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}
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}
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[Table(DisableSyncStructure = true)]
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public abstract class BaseEntity<TEntity, TKey> : BaseEntity<TEntity> where TEntity : class
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{
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static BaseEntity()
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{
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var tkeyType = typeof(TKey)?.NullableTypeOrThis();
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if (tkeyType == typeof(int) || tkeyType == typeof(long))
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Orm.CodeFirst.ConfigEntity(typeof(TEntity),
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t => t.Property("Id").IsIdentity(true));
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}
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/// <summary>
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/// 主键
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/// </summary>
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public virtual TKey Id { get; set; }
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/// <summary>
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/// 根据主键值获取数据
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/// </summary>
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/// <param name="id"></param>
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/// <returns></returns>
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public static TEntity Find(TKey id)
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{
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var item = Select.WhereDynamic(id).First();
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(item as BaseEntity<TEntity>)?.Attach();
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return item;
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}
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}
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[Table(DisableSyncStructure = true)]
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public abstract class BaseEntity<TEntity, TKey1, TKey2> : BaseEntity<TEntity> where TEntity : class
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{
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/// <summary>
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/// 主键1
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/// </summary>
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[Column(IsPrimary = true)]
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public virtual TKey1 PkId1 { get; set; }
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/// <summary>
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/// 主键2
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/// </summary>
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[Column(IsPrimary = true)]
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public virtual TKey2 PkId2 { get; set; }
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/// <summary>
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/// 根据主键值获取数据
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/// </summary>
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/// <param name="pkid1">主键1</param>
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/// <param name="pkid2">主键2</param>
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/// <returns></returns>
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public static TEntity Find(TKey1 pkid1, TKey1 pkid2)
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{
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var item = Select.WhereDynamic(new
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{
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PkId1 = pkid1,
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PkId2 = pkid2
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}).First();
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(item as BaseEntity<TEntity>).Attach();
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return item;
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}
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}
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91
Examples/base_entity/Entities/User.cs
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91
Examples/base_entity/Entities/User.cs
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using System;
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using System.Collections.Generic;
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using System.Text;
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public class UserGroup : BaseEntity<UserGroup, int>
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{
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/// <summary>
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/// 组名
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/// </summary>
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public string GroupName { get; set; }
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public List<User1> User1s { get; set; }
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public List<User2> User2s { get; set; }
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}
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public class Role : BaseEntity<Role, string>
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{
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public List<User1> User1s { get; set; }
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}
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public class RoleUser1 : BaseEntity<RoleUser1>
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{
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public string RoleId { get; set; }
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public Guid User1Id { get; set; }
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public Role Role { get; set; }
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public User1 User1 { get; set; }
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}
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public class User1 : BaseEntity<User1, Guid>
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{
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public int GroupId { get; set; }
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public UserGroup Group { get; set; }
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public List<Role> Roles { get; set; }
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/// <summary>
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/// 登陆名
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/// </summary>
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public string Username { get; set; }
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/// <summary>
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/// 昵称
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/// </summary>
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public string Nickname { get; set; }
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/// <summary>
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/// 头像
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/// </summary>
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public string Avatar { get; set; }
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/// <summary>
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/// 描述
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/// </summary>
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public string Description { get; set; }
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}
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public class User2 : BaseEntity<User2, Guid, int>
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{
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static User2()
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{
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User2.Orm.CodeFirst.ConfigEntity<User2>(t =>
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{
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t.Property(a => a.PkId1).Name("UserId");
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t.Property(a => a.PkId2).Name("Index");
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});
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}
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public int GroupId { get; set; }
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public UserGroup Group { get; set; }
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/// <summary>
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/// 登陆名
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/// </summary>
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public string Username { get; set; }
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/// <summary>
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/// 昵称
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/// </summary>
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public string Nickname { get; set; }
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/// <summary>
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/// 头像
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/// </summary>
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public string Avatar { get; set; }
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/// <summary>
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/// 描述
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/// </summary>
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public string Description { get; set; }
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}
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82
Examples/base_entity/Program.cs
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82
Examples/base_entity/Program.cs
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using System;
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namespace base_entity
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{
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class Program
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{
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static void Main(string[] args)
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{
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var ug1 = new UserGroup();
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ug1.GroupName = "分组一";
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ug1.Insert();
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var ug2 = new UserGroup();
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ug2.GroupName = "分组二";
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ug2.Insert();
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var u1 = new User1();
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var u2 = new User2();
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u1.GroupId = ug1.Id;
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u1.Save();
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u2.GroupId = ug2.Id;
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u2.Save();
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u1.Delete();
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u1.Restore();
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u1.Nickname = "x1";
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u1.Update();
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u2.Delete();
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u2.Restore();
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u2.Username = "x2";
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u2.Update();
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var u11 = User1.Find(u1.Id);
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u11.Description = "备注";
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u11.Save();
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u11.Delete();
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var u11null = User1.Find(u1.Id);
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var u11s = User1.Where(a => a.Group.Id == ug1.Id).Limit(10).ToList();
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var u22s = User2.Where(a => a.Group.Id == ug2.Id).Limit(10).ToList();
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var u11s2 = User1.Select.LeftJoin<UserGroup>((a, b) => a.GroupId == b.Id).Limit(10).ToList();
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var u22s2 = User2.Select.LeftJoin<UserGroup>((a, b) => a.GroupId == b.Id).Limit(10).ToList();
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var ug1s = UserGroup.Select
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.IncludeMany(a => a.User1s)
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.IncludeMany(a => a.User2s)
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.Limit(10).ToList();
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var ug1s2 = UserGroup.Select.Where(a => a.User1s.AsSelect().Any(b => b.Nickname == "x1")).Limit(10).ToList();
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var r1 = new Role();
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r1.Id = "管理员";
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r1.Save();
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var r2 = new Role();
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r2.Id = "超级会员";
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r2.Save();
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var ru1 = new RoleUser1();
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ru1.User1Id = u1.Id;
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ru1.RoleId = r1.Id;
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ru1.Save();
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ru1.RoleId = r2.Id;
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ru1.Save();
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var u1roles = User1.Select.IncludeMany(a => a.Roles).ToList();
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var u1roles2 = User1.Select.Where(a => a.Roles.AsSelect().Any(b => b.Id == "xx")).ToList();
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Console.WriteLine("按任意键结束。。。");
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Console.ReadKey();
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}
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}
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}
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18
Examples/base_entity/base_entity.csproj
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18
Examples/base_entity/base_entity.csproj
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>netcoreapp2.2</TargetFramework>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Newtonsoft.Json" Version="12.0.2" />
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</ItemGroup>
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<ItemGroup>
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<ProjectReference Include="..\..\FreeSql.Repository\FreeSql.Repository.csproj" />
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<ProjectReference Include="..\..\FreeSql\FreeSql.csproj" />
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<ProjectReference Include="..\..\Providers\FreeSql.Provider.Sqlite\FreeSql.Provider.Sqlite.csproj" />
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</ItemGroup>
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</Project>
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