GroupMembershipFacade.java

package fi.insomnia.bortal.facade;

import javax.ejb.LocalBean;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.TypedQuery;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import fi.insomnia.bortal.model.GroupMembership;
import fi.insomnia.bortal.utilities.PasswordFunctions;

@Stateless
@LocalBean
public class GroupMembershipFacade extends EventChildGenericFacade<GroupMembership> {

    private static final Logger logger = LoggerFactory.getLogger(GroupMembershipFacade.class);
    @PersistenceContext
    private EntityManager em;

    public GroupMembershipFacade() {
        super(GroupMembership.class);
    }

    protected EntityManager getEm() {
        return em;
    }

    public String createInviteToken() {
        String token = null;
        GroupMembership gm = null;
        do {
            if (token != null) {
                logger.info("Generated token {} found from GoupMembership: {} Generating new!", token, gm);
            }
            token = PasswordFunctions.generateRandomString(15);
            gm = findByToken(token);
        } while (gm != null);
        return token;
    }

    public GroupMembership findByToken(String token) {
        TypedQuery<GroupMembership> q = em.createQuery("Select gm from GroupMembership gm where gm.inviteToken = :token ", GroupMembership.class);
        q.setParameter("token", token);
        return getSingleNullableResult(q);
    }
}