Composite facet for hibernate search

Question

I have two entities: Action and User with many-to-one relationship.
I search for actions and I'd like to have a user full name facet, but instead of a full_name column in the database, I have first_name and last_name .

Is there any way to create a combined facet in hibernate search that would use firstName and lastName together? Or is there a way to create a combined field fullName that will exist in the search index (with a facet) but not in the database?

The mapping is the following:

@Entity
public class Action {

    ...

    @IndexEmbedded
    private User user;

}


@Entity
public class User {

    ...

    @Facet
    @Field(analyze = Analyze.NO)
    private String firstName;

    @Facet
    @Field(analyze = Analyze.NO)
    private String lastName;

}

Answer 1

You can use @Facet and @Field on a method of your User object.

So you can define something like:

@Facet
@Field
public String getFullName() {
   return new StringJoiner(" ").add(firstName).add(lastName).toString();
}