AntData.ORM Is Fork from Linq2db And CtripDal
.Read-write separation .Sharding By DB And Sharding By Table
SqlServer：Install-Package AntData.ORM
Mysql：Install-Package AntData.ORM.Mysql
Oracle: Install-Package AntData.ORM.Oracle
SqlServer : Install-Package AntData.Core
Mysql：Install-Package AntData.Core.Mysql
Postgre：Install-Package AntData.Core.Postgre
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如何配置tt模板自动生成entity以及常见的问题(文章末尾会有最新的tt文件包)
//使用DB这个对象一定要确保每次都是一个新的实例 例如像下面的这种写法是安全的
private static DbContext<Entitys> DB
{
get
{
var db = new MysqlDbContext<Entitys>("testorm");
//Trance Sql Log
db.IsEnableLogTrace = true;
db.OnLogTrace = OnCustomerTraceConnection;
//如果是sqlserver的话 可以设置下面
//db.IsNoLock = true;
return db;
}
}
private static void OnCustomerTraceConnection(CustomerTraceInfo customerTraceInfo)
{
try
{
//因为是防止sql注入的 所以SqlText指的orm给你生成的sql。CustomerParams是执行值传给数据库驱动的参数
string sql = customerTraceInfo.CustomerParams.Aggregate(customerTraceInfo.SqlText,
(current, item) => current.Replace(item.Key, item.Value.Value.ToString()));
Debug.Write(sql + Environment.NewLine);
}
catch (Exception)
{
//ignore 有可能会失败
Debug.Write(sql + Environment.NewLine);
}
}
//netcore2的建议大家去netcore2分支下载对应的demo//FirstOrDefault
var p = DB.Tables.People.FirstOrDefault();
var p = await DB.Tables.People.FirstOrDefaultAsync();
var p = DB.Tables.People.FirstOrDefault(r=>r.Name.Equals("nainaigu"));
var p = await DB.Tables.People.FirstOrDefaultAsync(r=>r.Name.Equals("nainaigu"));
//select single
var p = DB.Tables.People.Single(r=>r.Name.Equals("nainaigu"));
var p = await DB.Tables.People.SingleAsync(r=>r.Name.Equals("nainaigu"));
var p = DB.Tables.People.SingleOrDefault(r=>r.Name.Equals("nainaigu"));
var p = await DB.Tables.People.SingleOrDefaultAsync(r=>r.Name.Equals("nainaigu"));
//select single by primarykey
var p = DB.Tables.People.FindByBk(1);
//select first
var p = DB.Tables.People.Where(r=>r.Age>10).First();
var p = await DB.Tables.People.Where(r=>r.Age>10).FirstOrDefault();
//between 11 and 20
var page1 = DB.Tables.People.Where(r => r.Name.Equals("yuzd")).Skip(11).Take(20).ToList();
var page1 = await DB.Tables.People.Where(r => r.Name.Equals("yuzd")).Skip(11).Take(20).ToListAsync();
//get count
var count = DB.Tables.People.Where(r => r.Name.Equals("yuzd")).Count();
var count = await DB.Tables.People.Where(r => r.Name.Equals("yuzd")).CountAsync();
var p = DB.Tables.People.Where(r=>r.Age>10).LongCount();
var p = await DB.Tables.People.Where(r=>r.Age>10).LongCountAsync();
//skip 2
var skip = DB.Tables.People.Where(c => c.Age > 10).OrderBy(it => it.Age).Skip(2).ToList();
//take 2
var take = DB.Tables.People.Where(c => c.Age > 10).OrderBy(it => it.Age).Take(2).ToList();
//Not like
string conval = "a";
var notLike = DB.Tables.People.Where(c => !c.Name.Contains(conval)).ToList();
//Like
var conval = "三";
var like = DB.Tables.People.Where(c => c.Name.Contains(conval)).ToList();
//where sql string
var age = 10;
var b = DB.Tables.People.Where("age > 10").ToList();
var bb = DB.Tables.People.Where("age > @age",new {age= age }).ToList();
var bbb = DB.Tables.People.Where("age > @age and name = @name", new { age = age ,name= "nainaigu" }).ToList();;
var bbbb = DB.Tables.People.Where("age > @age", new { age = age }).Where("name = @name",new {name="nainaigu"}).ToList();
var bbbbb = DB.Tables.People.Where("age > @age and name = @name", new { age = age ,name= "nainaigu" }).Where(r=>r.Name.Equals("aaa")).ToList();
var bbbbbb = DB.Tables.People.Where(r=>r.SchoolId.Equals(2)).Where("age > @age", new { age = age }).Where(r => r.Name.Equals("nainaigu")).ToList();
var list = (from p in DB.Tables.People
join s in DB.Tables.Schools on p.SchoolId equals s.Id
select new {Name = p.Name,SchoolName = s.Name,Age = p.Age}
).Where(r=>r.Age > age)
.Where("school.name = @name", new { name = "nainaigu" })
.Where("person.name = @name", new { name = "nainaigu" })
.ToList();
//is any
bool isAny100 = DB.Tables.People.Any(c => c.Id == 100);
//get max Age
var p = DB.Tables.People.Max(r=>r.Age);
var p = await DB.Tables.People.MaxAsync(r=>r.Age);
//get min Age
var p = DB.Tables.People.Min(r=>r.Age);
var p = await DB.Tables.People.MinAsync(r=>r.Age);
//order By
var age = 10;
var bb = DB.Tables.People.Where(r => r.Age > age).Where("age > @age", new { age = age }).OrderBy("age","name").ToList();
var bb = DB.Tables.People.Where(r => r.Age > age).Where("age > @age", new { age = age }).OrderByDescending("age","name").ToList();
var bb = DB.Tables.People.Where(r => r.Age > age).Where("age > @age", new { age = age }).OrderByMultiple("age desc, name asc").ToList();
//Page
var bb = DB.Tables.People.Where(r => r.Name.Equals("yuzd")).OrderBy("Id").Skip(1).Take(10).ToList();
var bb = DB.Tables.People.Where(r => r.Name.Equals("yuzd")).OrderBy(r => r.Id).Skip(1).Take(10).ToList();
var bb = DB.Tables.People.Where(r => r.Name.Equals("yuzd")).OrderByDescending("Id").Skip(1).Take(10).ToList();
var bb = DB.Tables.People.Where(r => r.Name.Equals("yuzd")).OrderByDescending(r => r.Id).Skip(1).Take(10).ToList();
//In
var arr = new []{ "nainaigu","yuzd" };
var listnew = DB.Tables.People.Where(r => arr.Contains(r.Name)).ToList();
//group by
var b = DB.Tables.People.GroupBy("name").Select(r=>r.Key).ToList();
var bb = DB.Tables.People.GroupBy(r => r.Name).Select(r => r.Key).ToList();
var bbb = DB.Tables.People.GroupBy(r=> new {r.Name,r.Age}).Select(r=>r.ToList()).ToList();
var bbbb = DB.Tables.People.GroupBy(r=> r.Age ).Select(r =>new {Key =r.Key,Value = r.ToList()}).ToList();
var bbbbb = DB.Tables.People.GroupBy(r => r.Name).Select(r => new { Value = r.ToList() }).ToList();
//inner join
var list = (from p in DB.Tables.People
join s in DB.Tables.Schools on p.SchoolId equals s.Id
select p).ToList();
//left join
var list = (from p in DB.Tables.People
from s in DB.Tables.Schools.Where(r=>r.Id.Equals(p.SchoolId)).DefaultIfEmpty()
select p).ToList();
//express functions
1.2 SqlQuery
//to list
var list1 = DB.Query<Person>("select * from person").ToList();
//to list with par
var name = "yuzd";
var list = DB.Query<Person>("select * from person where name=@name",new { name = name }).ToList();
var list = await DB.Query<Person>("select * from person where name=@name",new { name = name }).ToListAsync();
//to DataTable
DataTable tb = DB.QueryTable("select * from person");
var tb = await DB.QueryTableAsync("select * from person");
var name = "yuzd";
SQL sql = "select * from person where name=@name";
sql = sql["name", name];
var list = DB.QueryTable(sql);
//get int or long or other
var name = "yuzd";
var age = 20;
SQL sql = "select count(*) from person where 1=1";
if (!string.IsNullOrEmpty(name))
{
sql += " and name = @name";
sql = sql["name", name];
}
if (age > 0)
{
sql += " and age = @age";
sql = sql["age", age];
}
var list = DB.Execute<long>(sql);
//customer pt
public class MyClass
{
public string Name { get; set; }
public int Age { get; set; }
}
var name = "yuzd";
var list = DB.Query<MyClass>("select * from person where name=@name",new {name = name}).ToList();
// to anonymous object
var name = "yuzd";
var list = DB.Query(new {Id= 0 ,Name = "",Age = 0}, "select * from person where name=@name", new {name = name}).ToList();//insert item
Person p = new Person
{
Name = "yuzd",
Age = 27
};
DB.Insert(p);
//insert list
List<Person> pList = new List<Person>
{
new Person
{
Name = "yuzd",
Age = 27,
SchoolId = 1
},
new Person
{
Name = "nainaigu",
Age = 18,
SchoolId = 2
}
};
var insertResult = DB.BulkCopy(pList);
Assert.AreEqual(insertResult.RowsCopied, 2);
//insert without same columns
DB.Tables.People.Value(r=>r.Name,"yuzd").Value(r=>r.DataChangeLastTime,DateTime.Now).Insert() // insert with no 【Age】
//insert with Identity
var id = DB.Tables.People.Value(r => r.Name, "yuzd").Value(r => r.DataChangeLastTime, DateTime.Now).InsertWithIdentity();
Person p = new Person
{
Name = "yuzd",
Age = 27,
SchoolId = 1
};
DB.InsertWithIdentity(p);【 now p.Id is the Identity result 】
//if identity is guid
var guidIdentity = DB.InsertWithIdentity<Person,string>(p);
//insert ignore null field
Person p = new Person
{
Name = null,
Age = 11,
SchoolId = null // will be ignored
};
DB.Insert(p);//update specified column
DB.Tables.People.Where(r => r.Name.Equals("yuzd")).Set(r => r.Age, 10).Update() ;
//下面这种例如你是传一个字段名称和值就完成更新的话能派上用场
DB.Tables.People.Where(r => r.Name.Equals("yuzd")).Set2<Person, int?>("Age", 20).Update() ;
//分开多次
var updateQuery = DB.Tables.People.Where(r => r.Name.Equals("yuzd")).Set(r => r.Age, 10);
if(XXXX){
updateQuery=updateQuery.Set(r => r.Name, 'xxx'); //切记多次的情况要覆盖updateQuery
}
updateQuery.Update();
//update by entity
var entity = DB.Tables.People.FirstOrDefault();
entity.DataChangeLastTime = DateTime.Now;
DB.Update(entity);//注意这样的话是会根据entity的主键来更新所有的字段的
//第一个参数代表条件 第二个参数是要组织你想要更新的字段和对应的值
//如果People有100个字段 只想要更新其中的2个字段
DB.Tables.People.Update(o => o.Name == "yuzd", o => new People { Age = o.Age + 1,Name = "yuzd2"});
对应的sql--->update person set age = age+1,name = 'yuzd2' where name ='yuzd'
如果是DB.Tables.People.Update(o => o.Name == "yuzd", o => new People { Age = o.Age + 1});
那么对应的sql --->update person set age = age+1 where name ='yuzd'
DB.Tables.People.Where(r => r.Name.Equals("yuzd")).Set(r => r.Age, y=>y.Age+1).Update();
对应的sql--->update person set age = age+1 where name ='yuzd'
//bulkupdate 【sqlserver only】
var allPerson = DB.Tables.People.ToList();
allPerson.ForEach(r =>
{
r.DataChangeLastTime = DateTime.Now;
});
DB.Tables.People.Merge(allPerson);//delete by exp
DB.Tables.People.Where(r => r.Name.Equals("yuzd")).Delete();
//delete by entity
var entity = DB.Tables.People.FirstOrDefault();
DB.Delete(entity);
Person p = new Person
{
Age = 27
};
DB.UseTransaction(con =>
{
//注意在Transaction使用的时候 一定要用 con 不要用外层的DB对象
con.Tables.Schools.Where(r=>r.Name.Equals("上海大学")).Set(r=>r.Address,"no update").Update();
con.Insert(p);
return true;
});Please see unit test
//提供了Query方法执行查询sql(select)
//例如悲观锁的select也是可以通过写sql来实现的 ====更多例子可以参考上面的 [1.2 SqlQuery章节]
var currentOrderId = DB.Query<currentOrderId>("select * from current_order_id where Tid = 1 for update;").FirstOrDefault();
//Execute方法是为了执行sql(insert update delete)
var count= DB.Execute("update person where name='yuzd'");//count是执行sql受影响的条数1 代码配置(netfx和netcore都适用)
//配置1个mysql数据源 在使用的时候直接用 "testorm_mysql" 这个逻辑名称
AntData.ORM.Common.Configuration.DBSettings = new DBSettings
{
DatabaseSettings = new List<DatabaseSettings>
{
new DatabaseSettings
{
Name = "testorm_mysql",
Provider = "mysql",
ConnectionItemList = new List<ConnectionStringItem>
{
new ConnectionStringItem
{
Name = "testorm_mysql",
ConnectionString = connectionString
}
}
}
}
};
//配置2个不同的mysql数据源 在使用的时候分别使用不同的 "testorm_mysql1" or "testorm_mysql2" 逻辑名称
AntData.ORM.Common.Configuration.DBSettings = new DBSettings
{
DatabaseSettings = new List<DatabaseSettings>
{
new DatabaseSettings
{
Name = "testorm_mysql1",
Provider = "mysql",
ConnectionItemList = new List<ConnectionStringItem>
{
new ConnectionStringItem
{
Name = "testorm_mysql1",
ConnectionString = connectionString1
}
}
},
new DatabaseSettings
{
Name = "testorm_mysql2",
Provider = "mysql",
ConnectionItemList = new List<ConnectionStringItem>
{
new ConnectionStringItem
{
Name = "testorm_mysql2",
ConnectionString = connectionString2
}
}
}
}
};
//配置Master-Slave类型mysql数据源
AntData.ORM.Common.Configuration.DBSettings = new DBSettings
{
DatabaseSettings = new List<DatabaseSettings>
{
new DatabaseSettings
{
Name = "testorm_mysql",
Provider = "mysql",
ConnectionItemList = new List<ConnectionStringItem>
{
new ConnectionStringItem
{
Name = "testorm_mysql1",
ConnectionString = connectionString1,
DatabaseType = DatabaseType.Master
},
new ConnectionStringItem
{
Name = "testorm_mysql2",
ConnectionString = connectionString2,
DatabaseType = DatabaseType.Slave
}
}
}
}
}; 2 netfx下用config文件配置
以下是App.config配置内容
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<section name="dal" type="AntData.ORM.DbEngine.Configuration.DbEngineConfigurationSection, AntData.ORM"/>
</configSections>
<location path="." allowOverride="true" inheritInChildApplications="false">
<dal configSource="Config\Dal.config"/>
</location>
</configuration>
以下是Config\Dal.config文件的配置内容
<dal name="DBDal">
<databaseSets>
<databaseSet name="testorm" provider="mySqlProvider">
<add name="testorm1" databaseType="Master" connectionString="Server=127.0.0.1;Port=28747;Database=testorm;Uid=root;Pwd=123456;charset=utf8;"/>
</databaseSet>
<databaseProviders>
<add name="mySqlProvider" type="AntData.ORM.Mysql.MySqlDatabaseProvider,AntData.ORM.Mysql"/>
</databaseProviders>
</dal>3 netcore下用appsettings.json文件配置
{
"Logging": {
"IncludeScopes": false,
"LogLevel": {
"Default": "Warning"
}
},
"dal": [
{
"Provider": "mysql",
"Name": "testorm_mysql",
"ConnectionItemList": [
{
"Name": "testorm_mysql",
"ConnectionString": ConnectionString,
"DatabaseType": "Master"
}
]
},
{
"Provider": "mysql",
"Name": "testorm_mysql2",
"ConnectionItemList": [
{
"Name": "testorm_mysql2",
"ConnectionString": "Server=127.0.0.1;Port=28747;Database=testorm;Uid=root;Pwd=123456;charset=utf8;SslMode=none",
"DatabaseType": "Master"
}
]
}
]
}
然后在Startup.cs里面的 Configure方法里面
AntData.ORM.Common.Configuration.UseDBConfig(Configuration);