Question

Let’s say I have a table ‘Team‘ and another table ‘Team Members‘. Team Member has a foreign key to Team.

Ideally, I would want hibernate to map my java objects such that, Team class would have a Map of Team Members. The key of the map is the name of the team member, and value is the TeamMember object.

So I would want my Team class to look like this:

public class Team {
    private Map<String, TeamMember> _teamMembers;
}

How do I map in my hibernate xml mapping file?

Answer 1

you’ll need <map> and set the index column to the column of the name property

<map name="teamMembers">
  <key column="team_id" />
  <index column="NameColumn" />
  <one-to-many class="TeamMember" />
</map>