Reflection generics, DAO Design Model (required for encoding)

Dao

 PackageCom.xiaofan.reflect;Importjava.io.Serializable; Public InterfaceDao<t> {    /*** Add entity (entity--domain) data to the database *@paramT*/    voidSave (T T); /*** Modify the entities in the database *@paramT*/    voidUpdate (T T); /*** Delete records according to primary key *@paramPK*/    voidDelete (Serializable PK); /*** Query A record according to the primary key *@paramPK *@return     */T Find (Serializable PK); }

Dao

Daobase

 PackageCom.xiaofan.reflect;Importjava.io.Serializable;ImportJava.lang.reflect.ParameterizedType;Importorg.hibernate.Session; Public Abstract classDaobase<t>ImplementsDao<t> {    PrivateSession session; PrivateClass Clazz; //Reflection Generics     Publicdaobase () {Class CLZ= This. GetClass ();//specific DAO implementation class Com.xiaofan.reflect.BookDaoImpl//System.out.println (Clz.getname ());Parameterizedtype pt = (parameterizedtype) clz.getgenericsuperclass ();//daobase<book>//System.out.println (PT);Clazz = (Class) pt.getactualtypearguments () [0];//Book.class//System.out.println (clazz);    }         Public voidSave (T t) {Session.save (t); }     Public voidUpdate (T t) {session.update (t); }     Public voidDelete (Serializable pk) {T T=(T) session.get (clazz, PK);    Session.delete (t); }     PublicT Find (Serializable PK) {return(T) session.get (clazz, PK); }}

Daobase

Bookdao

 Package Com.xiaofan.reflect;  Public Interface extends Dao<book>{    /**     * Query     by criteria @param  where      */    void querybycondition (String where);}

Bookdao

Bookdaoimpl

 Package Com.xiaofan.reflect;  Public class extends Implements bookdao{        publicvoid  querybycondition (String where) {            }}

Bookdaoimpl

Book

 Package Com.xiaofan.reflect;  Public class Book {}

Book

Customerdao

 Package Com.xiaofan.reflect;  Public Interface extends Dao<customer>{}

Customerdao

Customerdaoimpl

 Package Com.xiaofan.reflect;  Public class extends Implements Customerdao {    }

Customerdaoimpl

Customer

 Package Com.xiaofan.reflect;  Public class Customer {}

Customer

Client

 Package Com.xiaofan.reflect;  Public class Client {    publicstaticvoid  main (string[] args) {        new  Bookdaoimpl ();        Bdao.querybycondition ("condition");         New Customerdaoimpl ();        Cdao.find (001);    }}

Client

Reflection generics, DAO Design Model (required for encoding)