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Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 3 posts ] 
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 Post subject: HELP! problems with hashCode()
PostPosted: Wed Jan 14, 2004 12:03 pm 
Pro
Pro

Joined: Wed Oct 08, 2003 10:31 am
Posts: 247
I'm using Hibernate 2.1.1.
I want to insert a Mp with two MpRequisitosQual in it's "Set".
But when I do this, it only inserts the first MpRequisitosQual!
By the generated code (hbm2java), I see that the equality between two objects is made via there "id". And when I add the second MpRequisitosQual to the "Set", he's discarded because there's already an object with the same id (which is null at the time).
The hashCode() is responsible for this "id" test, right?

Please help. I really need to solve this. It's urgent.
Thanks in advance.


----------------------------------------
Mapping files (generated with R3)
----------------------------------------

Mp
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>
<!--
    Created by Middlegen Hibernate plugin

    http://boss.bekk.no/boss/middlegen/
    http://hibernate.sourceforge.net/
-->

<class
    name="vo.Mp"
    table="mp"
>

    <id
        name="id"
        type="long"
        column="id"
    >
        <generator class="increment" />
    </id>

    <property
        name="referencia"
        type="java.lang.String"
        column="referencia"
        not-null="true"
        length="-1"
    />

    <!-- associations -->
    <!-- bi-directional one-to-many association to MpRequisitosQual -->
    <set
        name="mpRequisitosQuals"
        lazy="true"
        inverse="true"
        cascade="save-update"
    >
        <key>
            <column name="mp_fk" />
        </key>
        <one-to-many
            class="vo.MpRequisitosQual"
        />
    </set>

</class>
</hibernate-mapping>


MpRequisitosQual
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>
<!--
    Created by Middlegen Hibernate plugin

    http://boss.bekk.no/boss/middlegen/
    http://hibernate.sourceforge.net/
-->

<class
    name="vo.MpRequisitosQual"
    table="mp_requisitos_qual"
>

    <id
        name="id"
        type="long"
        column="id"
    >
        <generator class="increment" />
    </id>

    <property
        name="designacao"
        type="java.lang.String"
        column="designacao"
        not-null="true"
        length="-1"
    />

    <!-- associations -->
    <!-- bi-directional many-to-one association to Mp -->
    <many-to-one
        name="mp"
        class="vo.Mp"
        not-null="true"
    >
        <column name="mp_fk" />
    </many-to-one>

</class>
</hibernate-mapping>


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 Post subject:
PostPosted: Wed Jan 14, 2004 12:06 pm 
Hibernate Team
Hibernate Team

Joined: Tue Sep 09, 2003 2:10 pm
Posts: 3246
Location: Passau, Germany
One posting is enough, answered in http://forum.hibernate.org/viewtopic.php?t=927078


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 Post subject:
PostPosted: Wed Jan 14, 2004 12:18 pm 
Pro
Pro

Joined: Wed Oct 08, 2003 10:31 am
Posts: 247
gloeglm wrote:
One posting is enough, answered in http://forum.hibernate.org/viewtopic.php?t=927078


Very sorry.
My link was very slow. I thought I was posting only one time.
Thanks for the reply.


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