Paul Tomsic wrote:
I've got the following class that represents a join-table with an additional column.public class GroupChoice implements Serializable { public static class Id implements Serializable { private Long _groupId; private Long _choiceId; public Id(Long groupId, Long choiceId) { this._groupId = groupId; this._choiceId = choiceId; }public boolean equals(Object o) {return true; } public int hashCode() {return 29;} } private Group group; private Choice choice; public GroupChoice(Group g, Choice c) { this._group = g; this._choice = c; } /** * @hibernate.id */ public GroupChoice.Id getId() { return new GroupChoice.Id(_group.getId(), _choice.getId()); } The error I'm getting is: Composite ID property of type GroupChoice.Id is invalid. It has to be serializable and reimplement equals(Object) What am I doing wrong here?
Probably nothing, but to be sure, you should implement the Id propert accessors and mutators in the id class, and put @hibernate.property tags on them.
Xdoclet's checks for the serializable and equals requirements on composite Id classes is proving to be troublesome, and I think unnecessary...I'm aiming, for the 1.3 release, to have people move towards explicity using a @hibernate.composite-id tag to specify composite ID's so that this checking doesn't need to be done at all.
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