Hibernate annotation for a Map of some enum type to some primitive type
Hibernate Annotations are so great, especially together with the Hibernate Tools that allows to generate the whole database (sql table definitions) from your annotated beans.
Right now I mapped the first time a java.util.Map with some enum type as key and a primitive type as value (java.lang.String).
The mapping looks like the following:
@CollectionOfElements
@JoinTable( name="my_table" )
@Cascade(value = org.hibernate.annotations.CascadeType.DELETE_ORPHAN)
@Enumerated(value=EnumType.STRING)
@org.hibernate.annotations.MapKey( columns = { @Column( name="my_enum" ) } )
@Column( name="my_value", length=4000 )
public Map<MyEnumType, String> getMappedValues() {
return _mappedValues;
}
What I was not able to do was to define the type of the value (String) as hibernate type text. This gave the correct table/column definition at build time (hibernate tools), but a ClassCastException at runtime, saying that MyEnumType is not compatible to hibernate’s type text. So I used the length of the @Column annotation as a temporary workaround - I’ll dig into this now or later - or has anybody a clue how to do this?
