one-to-many: doesnt insert turma_id

run4fun · **Joined:** Sat May 29, 2004 2:16 pm **Posts:** 81

i'm using hibernate2.1, winXP Pro, MySql 4.0.12.
i read this from command line:

Hibernate: insert into detalhes (estrategia, id) values (?, ?)
but it should also insert (turma_id) !
my cfg.xml file:

Code:

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping
PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
   <class name = "relatorio.Turma" table = "turmas">
      <id name = "id" column = "id" unsaved-value = "null">
         <generator class = "increment" />
      </id>
      <property name = "turma"       column = "turma" />
      <property name = "ano"          column = "ano" />
      <property name = "masculinos"    column = "masculinos" />
      <property name = "femininos"    column = "femininos" />
       <set name = "detalhe" inverse = "true" lazy = "true" cascade = "all">
           <key column = "turma_id" />
          <one-to-many class = "relatorio.Detalhe" />
       </set>
   </class>
</hibernate-mapping>

Can someone pls help me?
thanks in advance

gavin · **Posted:** Sun May 30, 2004 3:36 pm

you need an inverse <many-to-one> mapping if you use inverse="true"

run4fun · **Joined:** Sat May 29, 2004 2:16 pm **Posts:** 81

thanks for your answer

gavin wrote:

you need an inverse <many-to-one> mapping if you use inverse="true"

I dont understand what you mean
Can you pls explain a bit more?

run4fun · **Joined:** Sat May 29, 2004 2:16 pm **Posts:** 81

i made this:

Code:

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping
PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
   <class name = "relatorio.Detalhe" table = "detalhes">
      <id name = "id" column = "id" unsaved-value = "null">
         <generator class = "increment" />
      </id>
      <property name = "estrategia" column = "estrategia" />
        <many-to-one name = "turma_id" column = "turma_id" class = "relatorio.Detalhe"
        cascade="all">
    </many-to-one>
   </class>
</hibernate-mapping>

but then i'm obliged to manually insert the turma_id, i guess...

run4fun · **Joined:** Sat May 29, 2004 2:16 pm **Posts:** 81

lol
i got back to my first settings, took off inverse=true and works!
i'm very happy!
can i get any trouble because of that?
tx once more

christian · **Posted:** Sun May 30, 2004 4:08 pm

Please read the documentation, "Example: Parent/child relationship".

run4fun · **Joined:** Sat May 29, 2004 2:16 pm **Posts:** 81

i will
thank you