Hibernate Association configuration-bidirectional one-to-multiple/multiple-to-one ing configuration based on the connection table

entity:

Package bi. one2workflow. jointable; import Java. util. hashset; import Java. util. set; public class Emperor {private int ID; private string name; private set <Minister> Ministers = new hashset <Minister> (); Public Emperor () {} public Emperor (int id, string name, set <Minister> ministers) {super (); this. id = ID; this. name = Name; this. ministers = ministers;} public int GETID () {return ID;} public void setid (int id) {This. id = ID;} Public String getname () {return name;} public void setname (string name) {This. name = Name;} public set <Minister> getministers () {return ministers;} public void setministers (set <Minister> ministers) {This. ministers = ministers;} package bi. one2workflow. jointable; Public Class Minister {private int ID; private string name; private Emperor; Public Minister () {} public minister (int id, string name, Emperor) {super (); this. id = ID; this. name = Name; this. emperor = emperor;} public int GETID () {return ID;} public void setid (int id) {This. id = ID;} Public String getname () {return name;} public void setname (string name) {This. name = Name;} public Emperor getemperor () {return emperor;} public void setemperor (Emperor) {This. emperor = emperor ;}}

HBM configuration file:

<Hibernate-mapping> <class name = "bi. one2workflow. jointable. emperor "> <ID name =" ID "column =" Eid "> <generator class =" native "/> </ID> <property name =" name "type =" String "column =" name "> </property> <! -- Confirure the uniredirection Association --> <set name = "Ministers" table = "emperorminister" inverse = "true"> <key column = "Eid" not-null = "true"> </key> <subtitle-to-duplicate column = "mid" unique = "true" class = "bi. one2workflow. jointable. minister "/> </set> </class> 
 

 
Test file:
 

 
Public class test {@ Org. JUnit. testpublic void testadd () {sessionfactory Sf = hibernateutil. getsessionfactory (); Session session = SF. getcurrentsession (); Session. begintransaction (); Minister M1 = new minister (); m1.setname (""); Minister m2 = new minister (); m2.setname (" "); emperor = new emperor (); emperor. setname ("Qiwei Wang"); // emperor. getministers (). add (M1); // emperor. getministers (). add (m2); m1.setemperor (Emperor); m2.setemperor (Emperor); Session. save (Emperor); Session. save (M1); Session. save (m2); Session. begintransaction (). commit ();}}
 
 
 

 
Test results:
 

Hibernate: insert into Emperor (name) values (?) Hibernate: insert into Minister (name) values (?) Hibernate: insert into emperorminister (Eid, mid) values (?, ?) Hibernate: insert into Minister (name) values (?) Hibernate: insert into emperorminister (Eid, mid) values (?, ?)