I am trying to figure out the annotations for a map of basic java types:

Map<String, Set<String>> keywords

I solved a similar problem for just a Set, but I cannot figure out how to include a Map now. For the Set, I used:

Set<String> keywords

@OneToMany(cascade=CascadeType.ALL)
 @Column(name="keyword")
 @JoinTable(table=@Table(name="recipe_keywords"),
 joinColumns=@JoinColumn(name="id_recipe"))
 public Set<String> getKeywords() {
 return keywords;
 }

I would like to have two tables. One for my main recipe object and one for all the recipe keywords. The recipe keyword table would be:

recipe_keywords
-- id_recipe
-- map_key
-- keyword