GetMetricStreamScopeIdsDbMapper.java

/*
 * 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 java.util.List;

import org.eurekastreams.commons.date.DateDayExtractor;
import org.eurekastreams.server.persistence.mappers.BaseArgDomainMapper;

/**
 * DB mapper to get the stream scope ids to generate nightly metrics for. This includes person and group streams.
 */
public class GetMetricStreamScopeIdsDbMapper extends BaseArgDomainMapper<Date, List<Long>>
{
    /**
     * Get the IDs of the stream scopes of views to generate metrics for.
     * 
     * @param inMetricsDate
     *            the date to look for stream scope ids
     * @return all stream scope ids of people and group streams
     */
    @SuppressWarnings("unchecked")
    @Override
    public List<Long> execute(final Date inMetricsDate)
    {
        Date startOfDay = DateDayExtractor.getStartOfDay(inMetricsDate);
        Date endOfDay = DateDayExtractor.getEndOfDay(inMetricsDate);

        return getEntityManager().createQuery(
                "SELECT DISTINCT(streamViewStreamScopeId) FROM UsageMetric "
                        + "WHERE streamViewStreamScopeId != NULL AND created >= :start AND created <= :end")
                .setParameter("start", startOfDay).setParameter("end", endOfDay).getResultList();
    }
}