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Author Message
 Post subject: Many to many table
PostPosted: Wed Dec 09, 2009 8:50 am 
Newbie

Joined: Wed Dec 09, 2009 8:30 am
Posts: 2
Hi all, I have a problem and I hope you can help me.

I have a table called FAppDescriptor and another which name is FTheme.
FTheme contains a list of themes, and FAppDescriptor must have which theme it has, and for it, I have created another table called FDesTheme.

The two first tables has been described as always, with it's own id, and all the attributes and a set parameter targeting to the FDesTheme table.

the FDesTheme table has the id for both tables as it's own id, it's a composite id. I have defined it as I have seen in several examples and tutorials in this case. I have defined a class called FDesThemeFK and FDesTheme on this way:

public class FDesTheme implements java.io.Serializable {

private FDesThemeFK primary = new FDesThemeFK();

public FDesTheme(){

}
public FDesTheme(FAppDescriptor fad,FTheme ft){
primary.setFAppDescriptor(fad);
primary.setFTheme(ft);

}
public FDesThemeFK getPrimary() {
return primary;
}

public void setPrimary(FDesThemeFK primary) {
this.primary = primary;
}
}

and now, the FDesThemeFK:

public class FDesThemeFK implements java.io.Serializable {

private FAppDescriptor FAppDescriptor;
private FTheme FTheme;

public FDesThemeFK(){

}

public FAppDescriptor getFAppDescriptor(){
return this.FAppDescriptor;
}

public void setFAppDescriptor(FAppDescriptor FAppDescriptor){
this.FAppDescriptor=FAppDescriptor;
}

public FTheme getFTheme(){
return FTheme;
}

public void setFTheme(FTheme FTheme){
this.FTheme=FTheme;
}

//s'han d'implementar
public boolean equals(Object other) {
if (this == other) return true;
if ( !(other instanceof FDesThemeFK) ) return false;

final FDesThemeFK cat = (FDesThemeFK) other;

if ( !cat.getFAppDescriptor().equals( getFAppDescriptor() ) ) return false;
if ( !cat.getFTheme().equals( getFTheme() ) ) return false;

return true;
}

public int hashCode() {

return (getFTheme()).hashCode();
}
}

and the mapping file is:

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.alcatel.cdp.db.connector.orm.FDesTheme" table="f_destheme">
<composite-id name="primary" class="com.alcatel.cdp.db.connector.orm.FDesThemeFK">
<key-property name="FAppDescriptor" type="java.lang.Integer"/>
<key-property name="FTheme" type="java.lang.String"/>
</composite-id>

</class>
</hibernate-mapping>

I have tried several diferent things, but it doesn't work. When I insert it in the database, i do:

public FDesTheme insertOrUpdateFDesTheme(FDesTheme fdt,FDesThemeFK pk) throws HibernateException {

Session session = null;
try {
session = sessionFactory.openSession();

session.load(fdt,pk);
session.saveOrUpdate(fdt);
...
}

Doing this, he tries to select the table with the parameters I give him, he doesn't try to insert them, and I'm becoming crazy!!!!!

Please, if you have any idea what I do wrong or another way to do it, tell me.

Thank you,

David


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