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JavaRanch » Java Forums » Databases » Object Relational Mapping
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Foreig key must have same number of columns as the referenced primary key

Mafada Yeah
Greenhorn

Joined: Jan 13, 2012
Posts: 1
Hello!

I developing a web application with NetBeans. I'm trying to integrate hibernate into my project in order to set/get information from Database.

After create the Hibernate Reverse Engigeering file and Mapping Files, using NetBEans wizard, I found one proplem executing HQL:
org.hibernate.MappingException: Foreign key (FK637007E11D64F93:muxes [location_id])) must have same number of columns as the referenced primary key (locations [name,network_name,network_type_id,country_id])
at org.hibernate.mapping.ForeignKey.alignColumns(ForeignKey.java:90)
at org.hibernate.mapping.ForeignKey.alignColumns(ForeignKey.java:73)
at org.hibernate.cfg.Configuration.secondPassCompileForeignKeys(Configuration.java:1263)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1170)
at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:324)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1286)
at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:859)

My table locations has 4 columns for primary key, but my table muxes has reference to location id in order to be unique, i don't know how to solve this problem.

And the maping files are:
Muxes.hbm.xml

Locations.hbm.xml


Can someone help meee???
Thanks!!!
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: Foreig key must have same number of columns as the referenced primary key