/*
* Copyright (c) 2010-2011 Lockheed Martin Corporation
*
* Licensed 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
*
* 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.eurekastreams.server.persistence.mappers.db.metrics;
import java.util.Date;
import javax.persistence.Query;
import org.eurekastreams.commons.date.DateDayExtractor;
import org.eurekastreams.server.persistence.mappers.BaseArgDomainMapper;
/**
* DB Mapper to get the unique visitor count of a specific day.
*/
public class GetDailyUniqueVisitorCountDbMapper extends BaseArgDomainMapper<Date, Long>
{
/**
* Get the number of unique visitors on a specific day.
*
* @param inDay
* the day to get data for
* @return the number of unique visitors on the input day
*/
@Override
public Long execute(final Date inDay)
{
Date startOfDay, endOfDay;
Query q;
startOfDay = DateDayExtractor.getStartOfDay(inDay);
endOfDay = DateDayExtractor.getEndOfDay(inDay);
q = getEntityManager().createQuery(
"SELECT COUNT(DISTINCT actorPersonId) FROM UsageMetric "
+ "WHERE created >= :startDate AND created < :endDate").setParameter("startDate", startOfDay)
.setParameter("endDate", endOfDay);
return (Long) q.getSingleResult();
}
}