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Examples/efcore_to_freesql/FreeSqlExtensions/CodeFirstExtensions.cs Normal file
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using efcore_to_freesql.Entitys;
using FreeSql;
using FreeSql.Extensions.EfCoreFluentApi;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
public static class CodeFirstExtensions
{
public static void ConfigEntity(this ICodeFirst codeFirst, IMutableModel efmodel)
{
foreach (var type in efmodel.GetEntityTypes())
{
codeFirst.ConfigEntity(type.ClrType, a =>
{
//表名
var relationalTableName = type.FindAnnotation("Relational:TableName");
if (relationalTableName != null)
a.Name(relationalTableName.Value?.ToString() ?? type.ClrType.Name);
foreach (var prop in type.GetProperties())
{
var freeProp = a.Property(prop.Name);
//列名
var relationalColumnName = prop.FindAnnotation("Relational:ColumnName");
if (relationalColumnName != null)
freeProp.Name(relationalColumnName.Value?.ToString() ?? prop.Name);
//主键
freeProp.IsPrimary(prop.IsPrimaryKey());
//自增
freeProp.IsIdentity(
prop.ValueGenerated == ValueGenerated.Never ||
prop.ValueGenerated == ValueGenerated.OnAdd ||
prop.GetAnnotations().Where(z =>
z.Name == "SqlServer:ValueGenerationStrategy" && z.Value.ToString().Contains("IdentityColumn") //sqlserver 自增
|| z.Value.ToString().Contains("IdentityColumn") //其他数据库实现未经测试
).Any()
);
//可空
freeProp.IsNullable(prop.GetAfterSaveBehavior() != PropertySaveBehavior.Throw);
//类型
var relationalColumnType = prop.FindAnnotation("Relational:ColumnType");
if (relationalColumnType != null)
{
var dbType = relationalColumnType.ToString();
if (!string.IsNullOrEmpty(dbType))
{
var maxLength = prop.FindAnnotation("MaxLength");
if (maxLength != null)
dbType += $"({maxLength})";
freeProp.DbType(dbType);
}
}
}
});
}
}
public static void EfCoreFluentApiTestGeneric(this ICodeFirst cf)
{
cf.Entity<Song>(eb =>
{
eb.ToTable("tb_song1");
eb.Ignore(a => a.Field1);
eb.Property(a => a.Title).HasColumnType("varchar(50)").IsRequired();
eb.Property(a => a.Url).HasMaxLength(100);
eb.Property(a => a.RowVersion).IsRowVersion();
eb.Property(a => a.CreateTime).HasDefaultValueSql("current_timestamp");
eb.HasKey(a => a.Id);
eb.HasIndex(a => a.Title).IsUnique().HasName("idx_tb_song1111");
//一对多、多对一
eb.HasOne(a => a.Type).HasForeignKey(a => a.TypeId).WithMany(a => a.Songs);
//多对多
eb.HasMany(a => a.Tags).WithMany(a => a.Songs, typeof(Song_tag));
});
cf.Entity<SongType>(eb =>
{
eb.ToTable("tb_songtype1");
eb.HasMany(a => a.Songs).WithOne(a => a.Type).HasForeignKey(a => a.TypeId);
eb.HasData(new[]
{
new SongType
{
Id = 1,
Name = "流行",
Songs = new List<Song>(new[]
{
new Song{ Title = "真的爱你" },
new Song{ Title = "爱你一万年" },
})
},
new SongType
{
Id = 2,
Name = "乡村",
Songs = new List<Song>(new[]
{
new Song{ Title = "乡里乡亲" },
})
},
});
});
cf.SyncStructure<SongType>();
cf.SyncStructure<Song>();
}
public static void EfCoreFluentApiTestDynamic(this ICodeFirst cf)
{
cf.Entity(typeof(Song), eb =>
{
eb.ToTable("tb_song2");
eb.Ignore("Field1");
eb.Property("Title").HasColumnType("varchar(50)").IsRequired();
eb.Property("Url").HasMaxLength(100);
eb.Property("RowVersion").IsRowVersion();
eb.Property("CreateTime").HasDefaultValueSql("current_timestamp");
eb.HasKey("Id");
eb.HasIndex("Title").IsUnique().HasName("idx_tb_song2222");
//一对多、多对一
eb.HasOne("Type").HasForeignKey("TypeId").WithMany("Songs");
//多对多
eb.HasMany("Tags").WithMany("Songs", typeof(Song_tag));
});
cf.Entity(typeof(SongType), eb =>
{
eb.ToTable("tb_songtype2");
eb.HasMany("Songs").WithOne("Type").HasForeignKey("TypeId");
eb.HasData(new[]
{
new SongType
{
Id = 1,
Name = "流行",
Songs = new List<Song>(new[]
{
new Song{ Title = "真的爱你" },
new Song{ Title = "爱你一万年" },
})
},
new SongType
{
Id = 2,
Name = "乡村",
Songs = new List<Song>(new[]
{
new Song{ Title = "乡里乡亲" },
})
},
});
});
cf.SyncStructure<SongType>();
cf.SyncStructure<Song>();
}
}
public class SongConfiguration : FreeSql.Extensions.EfCoreFluentApi.IEntityTypeConfiguration<Song>
{
public void Configure(EfCoreTableFluent<Song> eb)
{
eb.ToTable("tb_song_config");
eb.Ignore(a => a.Field1);
eb.Property(a => a.Title).HasColumnType("varchar(50)").IsRequired();
eb.Property(a => a.Url).HasMaxLength(100);
eb.Property(a => a.RowVersion).IsRowVersion();
eb.Property(a => a.CreateTime).HasDefaultValueSql("current_timestamp");
eb.HasKey(a => a.Id);
eb.HasIndex(a => a.Title).IsUnique().HasName("idx_tb_song1111");
//一对多、多对一
eb.HasOne(a => a.Type).HasForeignKey(a => a.TypeId).WithMany(a => a.Songs);
//多对多
eb.HasMany(a => a.Tags).WithMany(a => a.Songs, typeof(Song_tag));
}
}