When One To Many, both ends need to be described.
Publication.java
Package com.javamodel.hibernate;
PUBLIC CLASS publication {
Private string id = NULL;
PRIVATE STRING BOOKNAME = NULL;
PRIVATE STRING DATATIME = NULL;
PRIVATE STRING AuthorId = NULL;
PRIVATE Author = NULL;
Public publication () {}
/ **
* @Return
* /
Public string getbookname () {
Return BookName;
}
/ **
* @Return
* /
Public string getDataTime () {
Return DataTime;
}
/ **
* @Return
* /
Public string getId () {
Return ID;
}
/ **
* @Param String
* /
Public void setBookName (String string) {
Bookname = string;
}
/ **
* @Param String
* /
Public void setDataime (string string) {
Dataime = String;
}
/ **
* @Param String
* /
Public void setid (String String) {
ID = String;
}
/ **
* @Return
* /
Public string getAuthorid () {
Return authorid;
}
/ **
* @Param String
* /
Public void setauthorid (String string) {
Authorid = String;
}
/ **
* @Return
* /
Public author getAuthor () {
Return Author;
}
/ **
* @Param Author
* /
Public void setauthor (author author) {
THIS.AUTHOR = Author;
}
}
Publication.hbm.xml
Author.java plus
Private set publications = new hashset (); // add get, set
AuThor.hbm.xml plus
Here is the main end, you can use Set, List, Bag, etc., refer to the documentation, inverse = "true", default is false. this place
When describing the two corresponding mapping files, there must be one end to: True. YEHS220 also mentioned many times.
->
EXAMPLE.JAVA
Package com.javamodel.hibernate;
Import java.io.ioException;
Import Java.io.InputStream;
Import java.util.properties;
Import net.sf.hibernate.hibernateException;
Import net.sf.hibelnate.mappingexception;
Import net.sf.hibernate.Session;
Import Net.sf.hibActory;
Import net.sf.hibernate.transaction;
Import Net.sf.hibiBernate.cfg.configuration;
Public class example {
Private static sessionFactory _SESSIONS = NULL;
Private static property pops = new profment ();
STATIC {
Try {
InputStream Stream = Example.class.getResourceceasstream ("Hibernate.Properties");
Try {
POPS.LOAD (stream);
} catch (ioException e1) {
E1.PrintStackTrace ();
}
Configuration CFG = New Configuration ();
Cfg.addclass (person.class);
cfg.addclass (author.class);
Cfg.addclass (publication.class);
Cfg.SetProperties (POPS);
_SESSIONS = cfg.buildsessionFactory ();
} catCH (mappingexception e) {
E.PrintStackTrace ();
} catch (hibernateException e) {
E.PrintStackTrace ();
}
}
Public static void main (string [] args) throws hibernateException {Person Person = New Person ();
Person.setname ("Hengfeido");
Person.setemail ("smallduzi@sohu.com");
Publication Publication1 = New Publication ();
Publication1.setbookName ("aaa");
Publication1.SetDataTime ("20031224");
Publication Publication2 = New Publication ();
Publication2.setbookName ("BBB");
Publication2.SetDataTime ("20031225");
Author author = new author ();
Author.setalias ("smallduzi");
Author.setPerson (Person);
Author.getpublications (). add (publication1);
Author.getpublications (). add (publication2);
Publication1.SetAuthor (Author);
Publication2.SetAuthor (Author);
Session session = _SESSIONS.OPENSESSION ();
Transaction TX = NULL;
Try {
TX = session.begintransaction ();
Session.save (author);
TX.comMit ();
System.out.Println ("over");
} catch (hibernateException he) {
IF (tx! = null) tx.rollback ();
Throw He;
}
Finally {
session.close ();
}
}
}
