org.jasig.portlet.blackboardvcportlet.dao.impl.UserSessionUrlDaoImpl.java Source code

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Here is the source code for org.jasig.portlet.blackboardvcportlet.dao.impl.UserSessionUrlDaoImpl.java

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/**
 * Licensed to Apereo under one or more contributor license
 * agreements. See the NOTICE file distributed with this work
 * for additional information regarding copyright ownership.
 * Apereo licenses this file to you under the Apache License,
 * Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License.  You may obtain a
 * copy of the License at the following location:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.jasig.portlet.blackboardvcportlet.dao.impl;

import java.util.LinkedHashSet;
import java.util.Set;

import javax.persistence.EntityManager;
import javax.persistence.TypedQuery;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Root;

import org.apache.commons.lang.Validate;
import org.jasig.jpa.BaseJpaDao;
import org.jasig.jpa.OpenEntityManager;
import org.jasig.portlet.blackboardvcportlet.dao.UserSessionUrlDao;
import org.jasig.portlet.blackboardvcportlet.data.ConferenceUser;
import org.jasig.portlet.blackboardvcportlet.data.Session;
import org.jasig.portlet.blackboardvcportlet.data.UserSessionUrl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;

import com.google.common.base.Function;

@Repository
public class UserSessionUrlDaoImpl extends BaseJpaDao implements UserSessionUrlDao {
    private CriteriaQuery<UserSessionUrlImpl> findAllUserSessionUrl;
    private CriteriaQuery<UserSessionUrlImpl> findUserSessionUrls;

    private InternalConferenceUserDao blackboardUserDao;

    private InternalSessionDao sessionDao;

    @Autowired
    public void setSessionDao(InternalSessionDao dao) {
        this.sessionDao = dao;
    }

    @Autowired
    public void setBlackboardUserDao(InternalConferenceUserDao blackboardUserDao) {
        this.blackboardUserDao = blackboardUserDao;
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        this.findAllUserSessionUrl = this
                .createCriteriaQuery(new Function<CriteriaBuilder, CriteriaQuery<UserSessionUrlImpl>>() {
                    @Override
                    public CriteriaQuery<UserSessionUrlImpl> apply(CriteriaBuilder cb) {
                        final CriteriaQuery<UserSessionUrlImpl> criteriaQuery = cb
                                .createQuery(UserSessionUrlImpl.class);
                        final Root<UserSessionUrlImpl> definitionRoot = criteriaQuery
                                .from(UserSessionUrlImpl.class);
                        criteriaQuery.select(definitionRoot);

                        return criteriaQuery;
                    }
                });

    }

    @Override
    public Set<UserSessionUrl> getAllUserSessionUrls() {
        final TypedQuery<UserSessionUrlImpl> query = this.createQuery(this.findAllUserSessionUrl);
        return new LinkedHashSet<UserSessionUrl>(query.getResultList());
    }

    @Override
    @OpenEntityManager
    public UserSessionUrlImpl getUserSessionUrlsBySessionAndUser(Session session, ConferenceUser user) {
        //fetch session
        SessionImpl sessionByBlackboardId = sessionDao.getSession(session.getSessionId());
        //fetch user
        ConferenceUserImpl confUser = blackboardUserDao.getUser(user.getUserId());
        //assert they are valid
        Validate.notNull(sessionByBlackboardId);
        Validate.notNull(confUser);

        final NaturalIdQuery<UserSessionUrlImpl> query = this.createNaturalIdQuery(UserSessionUrlImpl.class);
        query.using(UserSessionUrlImpl_.session, sessionByBlackboardId);
        query.using(UserSessionUrlImpl_.user, confUser);

        return query.load();
    }

    @Override
    @Transactional
    public UserSessionUrlImpl createUserSessionUrl(Session session, ConferenceUser user, String url) {
        //fetch session
        SessionImpl sessionFromDb = sessionDao.getSession(session.getSessionId());
        //fetch user
        ConferenceUserImpl userFromDb = blackboardUserDao.getUser(user.getUserId());
        //assert they are valid
        Validate.notNull(sessionFromDb);
        Validate.notNull(userFromDb);

        final UserSessionUrlImpl urlObject = new UserSessionUrlImpl(sessionFromDb, userFromDb, url);

        this.getEntityManager().persist(urlObject);

        return urlObject;
    }

    @Override
    @Transactional
    public void deleteOldSessionUrls(Session session, ConferenceUser user) {
        final EntityManager entityManager = this.getEntityManager();

        //fetch session
        SessionImpl sessionFromDb = sessionDao.getSession(session.getSessionId());
        //fetch user
        ConferenceUserImpl userFromDb = blackboardUserDao.getUser(user.getUserId());
        //assert they are valid
        Validate.notNull(sessionFromDb);
        Validate.notNull(userFromDb);

        final NaturalIdQuery<UserSessionUrlImpl> query = this.createNaturalIdQuery(UserSessionUrlImpl.class);
        query.using(UserSessionUrlImpl_.session, sessionFromDb);
        query.using(UserSessionUrlImpl_.user, userFromDb);

        UserSessionUrlImpl url = query.load();

        entityManager.remove(url);
        entityManager.flush();
    }
}