JPA Map<String,String> mapping

Question

How can I map a Map in JPA without using Hibernate's classes?

Answer 1

Although answer given by Subhendu Mahanta is correct. But @CollectionOfElements is deprecated. You can use @ElementCollection instead:

@ElementCollection @JoinTable(name="ATTRIBUTE_VALUE_RANGE", joinColumns=@JoinColumn(name="ID")) @MapKeyColumn (name="RANGE_ID") @Column(name="VALUE") private Map<String, String> attributeValueRange = new HashMap<String, String>(); 

There is no need to create a separate Entity class for the Map field. It will be done automatically.

Answer 2

Does not the following work for you?

@ManyToMany(cascade = CascadeType.ALL) Map<String,EntityType> entitytMap = new HashMap<String, EntityType>(); 

EntityType could be any entity type, including a String.