支持Fluent API .以继承接口的形式配置实体的。

Author: luoyunchong

Examples/efcore_to_freesql/DBContexts/BaseDBContext.cs

@@ -1,3 +1,4 @@
+using efcore_to_freesql.Entitys;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Logging;
 using System;
@@ -14,6 +15,15 @@ protected override void OnModelCreating(ModelBuilder modelBuilder)
         {
             base.OnModelCreating(modelBuilder);
             Fsql.CodeFirst.ConfigEntity(modelBuilder.Model); //同步配置
+
+            //配置单个
+            Fsql.CodeFirst.ApplyConfiguration(new SongConfiguration());
+
+            //批量量配置
+            //Fsql.CodeFirst.ApplyConfigurationsFromAssembly(typeof(SongConfiguration).Assembly);
+
+            Fsql.CodeFirst.SyncStructure<Song>();
+
         }
         protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
         {

Examples/efcore_to_freesql/FreeSqlExtensions/CodeFirstExtensions.cs

@@ -1,5 +1,6 @@
 using efcore_to_freesql.Entitys;
 using FreeSql;
+using FreeSql.Extensions.EfCoreFluentApi;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Metadata;
 using System;
@@ -178,4 +179,27 @@ public static void EfCoreFluentApiTestDynamic(this ICodeFirst cf)
         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));
+    }
+}

Examples/efcore_to_freesql/Startup.cs

@@ -28,7 +28,7 @@ public Startup(IConfiguration configuration, ILoggerFactory loggerFactory)
                 .Build();
 
             //Fsql.CodeFirst.EfCoreFluentApiTestGeneric();
-            Fsql.CodeFirst.EfCoreFluentApiTestDynamic();
+            //Fsql.CodeFirst.EfCoreFluentApiTestDynamic();
 
             BaseDBContext.Fsql = Fsql;
 

FreeSql.DbContext/EfCoreFluentApi/EfCoreFluentApiExtensions.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Linq.Expressions;
+using System.Reflection;
 using FreeSql;
 using FreeSql.DataAnnotations;
 using FreeSql.Extensions.EfCoreFluentApi;
@@ -34,4 +36,103 @@ public static ICodeFirst Entity(this ICodeFirst codeFirst, Type entityType, Acti
         codeFirst.ConfigEntity(entityType, tf => modelBuilder(new EfCoreTableFluent(cf._orm, tf, entityType)));
         return codeFirst;
     }
+
+    public static ICodeFirst ApplyConfiguration<TEntity>(this ICodeFirst codeFirst, IEntityTypeConfiguration<TEntity> configuration) where TEntity : class
+    {
+        return codeFirst.Entity<TEntity>(eb =>
+        {
+            configuration.Configure(eb);
+        });
+    }
+#if net40
+#else
+    static IEnumerable<MethodInfo> GetExtensionMethods(this Assembly assembly, Type extendedType)
+    {
+        var query = from type in assembly.GetTypes()
+                    where !type.IsGenericType && !type.IsNested
+                    from method in type.GetMethods(BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic)
+                    where method.IsDefined(typeof(System.Runtime.CompilerServices.ExtensionAttribute), false)
+                    where method.GetParameters()[0].ParameterType == extendedType
+                    select method;
+        return query;
+    }
+
+    /// <summary>
+    /// 根据Assembly扫描所有继承IEntityTypeConfiguration&lt;T&gt;的配置类
+    /// </summary>
+    /// <param name="codeFirst"></param>
+    /// <param name="assembly"></param>
+    /// <param name="predicate"></param>
+    /// <returns></returns>
+    public static ICodeFirst ApplyConfigurationsFromAssembly(this ICodeFirst codeFirst, Assembly assembly, Func<Type, bool> predicate = null)
+    {
+        IEnumerable<TypeInfo> typeInfos = assembly.DefinedTypes.Where(t => !t.IsAbstract && !t.IsGenericTypeDefinition);
+
+        MethodInfo methodInfo = typeof(FreeSqlDbContextExtensions).Assembly.GetExtensionMethods(typeof(ICodeFirst))
+            .Single((e) => e.Name == "Entity" && e.ContainsGenericParameters);
+
+        if (methodInfo == null) return codeFirst;
+
+        foreach (TypeInfo constructibleType in typeInfos)
+        {
+            if (constructibleType.GetConstructor(Type.EmptyTypes) == null || predicate != null && !predicate(constructibleType))
+            {
+                continue;
+            }
+
+            foreach (var @interface in constructibleType.GetInterfaces())
+            {
+                if (@interface.IsGenericType && @interface.GetGenericTypeDefinition() == typeof(IEntityTypeConfiguration<>))
+                {
+                    var type = @interface.GetGenericArguments().First();
+                    var efFluentType = typeof(EfCoreTableFluent<>).MakeGenericType(type);
+                    var actionType = typeof(Action<>).MakeGenericType(efFluentType);
+
+                    //1.需要实体和Configuration配置
+                    //codeFirst.Entity<ToDoItem>(eb =>
+                    //{
+                    //    new ToDoItemConfiguration().Configure(eb);
+                    //});
+
+                    //2.需要实体
+                    //Action<EfCoreTableFluent<ToDoItem>> x = new Action<EfCoreTableFluent<ToDoItem>>(e =>
+                    //{
+                    //    object o = Activator.CreateInstance(constructibleType);
+                    //    constructibleType.GetMethod("ApplyConfiguration")?.Invoke(o, new object[1] { e });
+                    //});
+                    //codeFirst.Entity<ToDoItem>(x);
+
+                    //3.实现动态调用泛型委托
+                    DelegateBuilder delegateBuilder = new DelegateBuilder(constructibleType);
+                    MethodInfo applyconfigureMethod = delegateBuilder.GetType().GetMethod("ApplyConfiguration")?.MakeGenericMethod(type);
+                    if (applyconfigureMethod == null) continue;
+                    Delegate @delegate = Delegate.CreateDelegate(actionType, delegateBuilder, applyconfigureMethod);
+
+                    methodInfo.MakeGenericMethod(type).Invoke(null, new object[2]
+                    {
+                        codeFirst,
+                        @delegate
+                    });
+
+                }
+            }
+        }
+
+        return codeFirst;
+    }
+    class DelegateBuilder
+    {
+        private readonly Type type;
+
+        public DelegateBuilder(Type type)
+        {
+            this.type = type;
+        }
+        public void ApplyConfiguration<T>(EfCoreTableFluent<T> ex)
+        {
+            object o = Activator.CreateInstance(type);
+            type.GetMethod("Configure")?.Invoke(o, new object[1] { ex });
+        }
+    }
+#endif
 }

FreeSql.DbContext/EfCoreFluentApi/IEntityTypeConfiguration.cs

@@ -0,0 +1,7 @@
+namespace FreeSql.Extensions.EfCoreFluentApi
+{
+    public interface IEntityTypeConfiguration<TEntity> where TEntity : class
+    {
+        void Configure(EfCoreTableFluent<TEntity> model);
+    }
+}