Home Backend Development PHP Tutorial 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架构小结 适用于java c# php版

Jun 13, 2016 pm 12:23 PM
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Atitit.ati orm的设计and架构总结 适用于java c# php版

Atitit.ati orm的设计and架构总结 适用于java c# php

 

1Orm的目标1

1.1. 动态obj1

1.2. Hbapi(meger,save,update,del)1

2Orm的概念1

3动态obj2

4参考4

 

 

 

 

 

 

1. Orm的目标

1.1. 动态obj

1.2. Hbapi(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:瞬态或者自由态

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)

        {

            DictionarystringObject> ormObj = new Dictionarystringobject>();

            ormObj.Add("table""ecs_goods");

 

 

            DictionarystringObject> flds_frm = (DictionarystringObject>)obj;

            DictionarystringObject> flds = new Dictionarystringobject>();

            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();

            DictionaryStringObject> ormobjMap = ((DictionaryStringObject>)ormObj) ;

            DictionaryStringObject> fldMap = (DictionaryStringObject>)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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