Hi,

I am using Spring , JPA and hibernate..

1) How can one persist a list of objects?

2) Is it possible to persist a list of enums ?

I am getting these exceptions :

a) org.hibernate.MappingException: Could not determine type for: java.util.List, for columns: [org.hibernate.mapping.Column(features)]

when I define field as
List<PropertyFeature> features;
// property feature is defined with @Entity

b) if I add any sort of annotation like @oneToMany etc. then I am getting this error :
org.hibernate.AnnotationException: Use of @OneToMany or @ManyToMany targeting an unmapped class: com.hestia.property.Property.features[tags.PropertyFeature]


Can anyone guide me to good resources for persisting using hibernate, with JPA and Spring.. I am completely new to hibernate and don't know how to use mapping files and can't find a good resource on this way of using hibernate!

Thanx in advance!

Both:

http://www.hibernate.org/hib_docs/annotations/reference/en/html_single/#entity-mapping-association

And

http://www.hibernate.org/hib_docs/v3/reference/en-US/html_single/#collections-mapping

Are probably the best resources for this.

You will need to specify one-to-many or many-to-many on this field. The org.hibernate.AnnotationException you are receiving is likely because:

a) PropertyFeature is not mapped with an @Entity. It needs to be a mapped instance as well.

b) PropertyFeature is mapped, but Hibernate can't find it. Not sure how you are using spring/hibernate but likely there is some place where you specify packages or classes that are mapped for hibernate to look. Make sure that PropertyFeature is included in this list.