Atitit.ati orm的设计and架构小结 适用于java c# php版
Atitit.ati orm的设计and架构总结 适用于java c# php版
1. Orm的目标1
1.1. 动态obj1
1.2. Hb的api(meger,save,update,del)1
2. Orm的概念1
3. 动态obj2
4. 参考4
1. Orm的目标
1.1. 动态obj
1.2. Hb的api(meger,save,update,del)
2. Orm的概念
saveOrUpdate后的对象会纳入session的管理，对象的状态会跟数据库同步，再次查询该对象会直接从session中取，merge后的对象不会纳入session的管理，再次查询该对象还是会从数据库中取。.
对于hibernate，它的对象有三种状态，transient、persistent、detached
下边是常见的翻译办法：
transient：瞬态或者*态
persistent：持久化状态
detached：脱管状态或者游离态
脱管状态的实例可以通过调用save()、persist()或者saveOrUpdate()方法进行持久化。
persist和merge： 没有和数据库进行同步
save和update： 处理后的数据处于持久状态，换句话说，调用sql进行和数据库同步的步骤。
总的来说，对于长事务的处理，应该使用persist和merge。减少数据库交互
作者:: 老哇的爪子 Attilax 艾龙， EMAIL:[email protected]
转载请注明来源： http://blog.csdn.net/attilax
3. 动态obj
Proj.amazon .spider
public object hanlder(object obj, ClassLibrary1.com.attilax.lang.FilterFilterChain nextChain)
{
Dictionarystring, Object> ormObj = new Dictionarystring, object>();
ormObj.Add("table", "ecs_goods");
Dictionarystring, Object> flds_frm = (Dictionarystring, Object>)obj;
Dictionarystring, Object> flds = new Dictionarystring, object>();
flds.Add("goods_name", flds_frm["title"]);
flds.Add("goods_desc", "goods_descxxx");
// flds.Add("good_nam
ormObj.Add("fields", flds);
AtiOrmX ormx = (AtiOrmX)new IocX().getBean("ormx");
return ormx.save(ormObj);
}
-------code
public class AtiOrmX
{
public Ioc ioc;
public Object save(Object ormObj)
{
String sql = SqlX.getSql(ormObj);
Console.WriteLine("--orm sql:" + sql);
DbUtil dbx = (DbUtil)ioc.getBean("dbx");
return dbx.exec(sql);
}
}
public class SqlX
{
public static string getSql(object ormObj)
{
// throw new NotImplementedException();
DictionaryString, Object> ormobjMap = ((DictionaryString, Object>)ormObj) ;
DictionaryString, Object> fldMap = (DictionaryString, Object>)ormobjMap["fields"];
System.Collections.Generic.Listobject> flds = new Listobject>();
System.Collections.Generic.Listobject> fld_vals = new Listobject>();
foreach (var item in fldMap)
{
flds.Add(item.Key);
fld_vals.Add("'"+ item.Value+"'");
Console.WriteLine(item.Key + item.Value);
}
String fld_s = ListX.join(",", flds);
String v_s = ListX.join(",", fld_vals);
String sql = " insert into " + ormobjMap["table"] + "(@flds)values(@vs)";
sql = sql.Replace("@flds", fld_s); sql = sql.Replace("@vs", v_s);
return sql;
}
}
public class DbUtil
{
public Object exec(string sql)
{
MySqlConnection mysqlcon = this.getmysqlcon();
mysqlcon.Open();
MySqlCommand mysqlcom = new MySqlCommand(sql, mysqlcon);
int r = mysqlcom.ExecuteNonQuery();
mysqlcom.Dispose();
mysqlcon.Close();
mysqlcon.Dispose();
return r;
}
------ioc
facMap.Add("dbx", () =>
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