需求对值对象的支持

public class Category
{
public Category() { }

public Guid Id { get; set; }

[ValueObj]
public virtual Handler Create { get; set; }
}

public class Handler
{
public DateTime Time { get; set; }

public string UserId { get; set; }
}

public void Configure(EntityTypeBuilder builder)
{
builder.Property(c => c.Id);
builder.OwnsOne(p => p.Create,p =>{ p.Property(e => e.UserId).HasComment("创建人");p.Property(e => e.Time).HasComment("创建时间");});
builder.ToTable("Categories");
}

// 需求支持以下这种方式分片
public override void Configure(EntityMetadataTableBuilder builder)
{
builder.ShardingProperty(o => o.Create.Time);
}