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## v0.3.24

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- 增加 GroupBy 分页方法；
- 修复 Insert 参数化命名 bug，当存在 Id Id2 时发生；
- 优化 Insert/Delete/Update 对象执行完后清理数据，以备多次使用；
This commit is contained in:
28810
2019-03-22 21:54:35 +08:00
parent 1470aab6e3
commit a9e34f852a
39 changed files with 975 additions and 1058 deletions
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50
Examples/dbcontext_01/Controllers/ValuesController.cs
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@ -29,60 +29,74 @@ namespace dbcontext_01.Controllers
using (var ctx = new SongContext()) {
ctx.Songs.Select.Where(a => a.Id > 10).ToList();
//查询结果，进入 states
var song = new Song { };
//可插入的 song
ctx.Songs.Add(song);
id = song.Id;
//因有自增类型，立即开启事务执行SQL，返回自增值
var adds = Enumerable.Range(0, 100)
.Select(a => new Song { Create_time = DateTime.Now, Is_deleted = false, Title = "xxxx" + a, Url = "url222" })
.ToList();
//创建一堆无主键值
ctx.Songs.AddRange(adds);
//立即执行，将自增值赋给 adds 所有元素，因为有自增类型，如果其他类型，指定传入主键值，不会立即执行
for (var a = 0; a < adds.Count; a++)
adds[a].Title = "dkdkdkdk" + a;
ctx.Songs.UpdateRange(adds);
//批量修改，进入队列
ctx.Songs.RemoveRange(adds.Skip(10).Take(20).ToList());
//批量删除，进入队列，完成时 10-20 元素的主键值会被清除
//ctx.Songs.Update(adds.First());
adds.Last().Url = "skldfjlksdjglkjjcccc";
ctx.Songs.Update(adds.Last());
//单条修改 urls 的值，进入队列
//throw new Exception("回滚");
//ctx.Songs.Select.First();
//这里做一个查询，会立即打包【执行队列】，避免没有提交的数据，影响查询结果
ctx.SaveChanges();
//打包【执行队列】，提交事务
}
using (var ctx = new SongContext()) {
//using (var ctx = new SongContext()) {
var song = new Song { };
await ctx.Songs.AddAsync(song);
id = song.Id;
// var song = new Song { };
// await ctx.Songs.AddAsync(song);
// id = song.Id;
var adds = Enumerable.Range(0, 100)
.Select(a => new Song { Create_time = DateTime.Now, Is_deleted = false, Title = "xxxx" + a, Url = "url222" })
.ToList();
await ctx.Songs.AddRangeAsync(adds);
// var adds = Enumerable.Range(0, 100)
// .Select(a => new Song { Create_time = DateTime.Now, Is_deleted = false, Title = "xxxx" + a, Url = "url222" })
// .ToList();
// await ctx.Songs.AddRangeAsync(adds);
for (var a = 0; a < adds.Count; a++)
adds[a].Title = "dkdkdkdk" + a;
// for (var a = 0; a < adds.Count; a++)
// adds[a].Title = "dkdkdkdk" + a;
ctx.Songs.UpdateRange(adds);
// ctx.Songs.UpdateRange(adds);
ctx.Songs.RemoveRange(adds.Skip(10).Take(20).ToList());
// ctx.Songs.RemoveRange(adds.Skip(10).Take(20).ToList());
//ctx.Songs.Update(adds.First());
// //ctx.Songs.Update(adds.First());
adds.Last().Url = "skldfjlksdjglkjjcccc";
ctx.Songs.Update(adds.Last());
// adds.Last().Url = "skldfjlksdjglkjjcccc";
// ctx.Songs.Update(adds.Last());
//throw new Exception("回滚");
// //throw new Exception("回滚");
await ctx.SaveChangesAsync();
}
// await ctx.SaveChangesAsync();
//}
} catch {
var item = await _orm.Select<Song>().Where(a => a.Id == id).FirstAsync();