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Editorial Team
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Asked: 2026-05-21T21:56:12+00:00

I have an EJB with an @onetomany relationship like this in my parent class

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I have an EJB with an @onetomany relationship like this in my parent class (Timeslot):

@OneToMany(mappedBy = "rsTimeslots")
private List<RsEvents> rsEventsList;

I also have a function to get the rsEventList:

public void setRsEventsList(List<RsEvents> rsEventsList) {
    this.rsEventsList = rsEventsList;
}

This was all auto generated so far. In my view-layer code I can get a timeslot object and do something like timeslot.getRsEventList() and get all children of this timeslot. Now I need to restrict that list based on a criteria. For example I only want events that are children of this timeslot with a status of 1. Is there a way to do this with annotations?

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1 Answer

  1. Editorial Team

    Not in JPA.

    Normally you would execute a Query for this, using JPQL or the criteria API.

    Some JPA providers do provide ways to restrict relationships, but I think you would be best off with a query, or providing a get/filter method on your class that just accesses the list and filters it (i.e. getStatus1Events()).

    For an EclipseLink example of having a criteria on a mapping see,
    http://wiki.eclipse.org/EclipseLink/Examples/JPA/MappingSelectionCriteria

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