Hey, does anyone knows why does GlassFish throws this exception:
org.hibernate.MappingException: Foreign key (FK4FDEDAA91B86637C:area_laboral [id_org_ubicacion])) must have same number of columns as the referenced primary key (organizacion_ubicacion [id_org_ubicacion,id_organizacion,id_pais,id_plaza])

Here are my mapping documents:
//////////////////OrganizacionUbicacion////////////////////////////////////////
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 27/02/2009 09:01:32 PM by Hibernate Tools 3.2.1.GA -->
<hibernate-mapping>
<class name="Pojos.OrganizacionUbicacion" table="organizacion_ubicacion" catalog="privilegios">
<composite-id name="id" class="Pojos.OrganizacionUbicacionId">
<key-property name="idOrgUbicacion" type="long">
<column name="id_org_ubicacion" />
</key-property>
<key-property name="idOrganizacion" type="long">
<column name="id_organizacion" />
</key-property>
<key-property name="idPais" type="long">
<column name="id_pais" />
</key-property>
<key-property name="idPlaza" type="string">
<column name="id_plaza" length="5" />
</key-property>
</composite-id>
<many-to-one name="pais" class="Pojos.Pais" update="false" insert="false" fetch="select">
<column name="id_pais" not-null="true" />
</many-to-one>
<many-to-one name="organizacion" class="Pojos.Organizacion" update="false" insert="false" fetch="select">
<column name="id_organizacion" not-null="true" />
</many-to-one>
<many-to-one name="plaza" class="Pojos.Plaza" update="false" insert="false" fetch="select">
<column name="id_plaza" length="5" not-null="true" />
</many-to-one>
<set name="areaLaborals" inverse="true">
<key>
<column name="id_org_ubicacion" not-null="true" />
</key>
<one-to-many class="Pojos.AreaLaboral" />
</set>
</class>
</hibernate-mapping>
//////////////////////////////Organizacion////////////////////////////////////////
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 27/02/2009 09:01:32 PM by Hibernate Tools 3.2.1.GA -->
<hibernate-mapping>
<class name="Pojos.Organizacion" table="organizacion" catalog="privilegios">
<id name="idOrganizacion" type="long">
<column name="id_organizacion" />
<generator class="assigned" />
</id>
<property name="nombreCorto" type="string">
<column name="nombre_corto" length="25" />
</property>
<property name="nombreLargo" type="string">
<column name="nombre_largo" length="150" not-null="true" />
</property>
<property name="altaStamp" type="timestamp">
<column name="alta_stamp" length="19" not-null="true" />
</property>
<property name="modificaStamp" type="timestamp">
<column name="modifica_stamp" length="19" />
</property>
<property name="bajaStamp" type="timestamp">
<column name="baja_stamp" length="19" />
</property>
<property name="calleNumero" type="string">
<column name="calle_numero" length="100" not-null="true" />
</property>
<property name="colonia" type="string">
<column name="colonia" length="100" not-null="true" />
</property>
<property name="municipio" type="string">
<column name="municipio" length="100" />
</property>
<property name="cp" type="string">
<column name="cp" length="10" not-null="true" />
</property>
<property name="telefono" type="string">
<column name="telefono" length="15" not-null="true" />
</property>
<set name="organizacionUbicacions" inverse="true">
<key>
<column name="id_organizacion" not-null="true" />
</key>
<one-to-many class="Pojos.OrganizacionUbicacion" />
</set>
</class>
</hibernate-mapping>
//////////////////////////////Plaza////////////////////////////////////////
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 27/02/2009 09:01:32 PM by Hibernate Tools 3.2.1.GA -->
<hibernate-mapping>
<class name="Pojos.Plaza" table="plaza" catalog="privilegios">
<id name="idPlaza" type="string">
<column name="id_plaza" length="5" />
<generator class="assigned" />
</id>
<property name="plaza" type="string">
<column name="plaza" length="45" not-null="true" />
</property>
<property name="altaStamp" type="timestamp">
<column name="alta_stamp" length="19" not-null="true" />
</property>
<property name="modificaStamp" type="timestamp">
<column name="modifica_stamp" length="19" />
</property>
<property name="bajaStamp" type="timestamp">
<column name="baja_stamp" length="19" />
</property>
<set name="plazaHorarios" inverse="true">
<key>
<column name="id_plaza" length="5" not-null="true" unique="true" />
</key>
<one-to-many class="Pojos.PlazaHorario" />
</set>
<set name="organizacionUbicacions" inverse="true">
<key>
<column name="id_plaza" length="5" not-null="true" />
</key>
<one-to-many class="Pojos.OrganizacionUbicacion" />
</set>
</class>
</hibernate-mapping>
/////////////////////////////////////////////////////////////////////////////////////
And here is mysql queries for creating the tables:

//////////////////////////////////Organizacion////////////////////////////////////
CREATE TABLE `privilegios`.`organizacion` (
`id_organizacion` bigint(20) unsigned NOT NULL,
`nombre_corto` varchar(25) default NULL,
`nombre_largo` varchar(150) NOT NULL,
`alta_stamp` datetime NOT NULL,
`modifica_stamp` datetime default NULL,
`baja_stamp` datetime default NULL,
`calle_numero` varchar(100) NOT NULL,
`colonia` varchar(100) NOT NULL,
`municipio` varchar(100) default NULL,
`cp` varchar(10) NOT NULL,
`telefono` varchar(15) NOT NULL,
PRIMARY KEY (`id_organizacion`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
//////////////////////////////////OrganizacionUbicacion/////////////////////////
CREATE TABLE `privilegios`.`organizacion_ubicacion` (
`id_org_ubicacion` bigint(20) unsigned NOT NULL,
`id_organizacion` bigint(20) unsigned NOT NULL,
`id_pais` bigint(20) unsigned NOT NULL,
`id_plaza` char(5) NOT NULL,
PRIMARY KEY (`id_org_ubicacion`,`id_organizacion`,`id_pais`,`id_plaza`),
KEY `FK_organizacion_ubicacion_1` (`id_organizacion`),
KEY `FK_organizacion_ubicacion_2` (`id_pais`),
KEY `FK_organizacion_ubicacion_3` (`id_plaza`),
CONSTRAINT `FK_organizacion_ubicacion_1` FOREIGN KEY (`id_organizacion`) REFERENCES `organizacion` (`id_organizacion`),
CONSTRAINT `FK_organizacion_ubicacion_2` FOREIGN KEY (`id_pais`) REFERENCES `pais` (`id_pais`),
CONSTRAINT `FK_organizacion_ubicacion_3` FOREIGN KEY (`id_plaza`) REFERENCES `plaza` (`id_plaza`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
///////////////////////////////////////Plaza////////////////////////////////////////
CREATE TABLE `privilegios`.`plaza` (
`id_plaza` char(5) NOT NULL,
`plaza` varchar(45) NOT NULL,
`alta_stamp` datetime NOT NULL,
`modifica_stamp` datetime default NULL,
`baja_stamp` datetime default NULL,
PRIMARY KEY (`id_plaza`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
/////////////////////////////////////////////////////////////////////////////////////
By the way; I used netbeans reverse enginering for generating the hbm files.
So, does anyone knows where is the problem??

This <set> is mapped incorrectly. It is part of the Pojos.OrganizacionUbicacion class which has a composite primary key with four columns (id_org_ubicacion,id_organizacion,id_pais,id_plaza). This means that the <key> tag must also contain the same number of matching columns. Eg.



All of the four column must exist in table where you are storing Pojos.AreaLaboral entities. You are not showing the mapping (or table) for this class, but since the <set> is inverse I guess you already have a <many-to-one> going from Pojos.AreaLaboral to Pojos.OrganizacionUbicacion.