ch.systemsx.cisd.openbis.generic.server.dataaccess.db.PermIdDAO.java Source code

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Here is the source code for ch.systemsx.cisd.openbis.generic.server.dataaccess.db.PermIdDAO.java

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/*
 * Copyright 2009 ETH Zuerich, CISD
 *
 * 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 ch.systemsx.cisd.openbis.generic.server.dataaccess.db;

import java.util.Date;
import java.util.List;

import org.apache.commons.lang.time.DateFormatUtils;
import org.apache.log4j.Logger;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Restrictions;

import ch.systemsx.cisd.common.logging.LogCategory;
import ch.systemsx.cisd.common.logging.LogFactory;
import ch.systemsx.cisd.openbis.generic.shared.dto.DatabaseInstancePE;
import ch.systemsx.cisd.openbis.generic.shared.dto.IEntityInformationHolderDTO;
import ch.systemsx.cisd.openbis.generic.shared.dto.SequenceNames;
import ch.systemsx.cisd.openbis.generic.shared.dto.properties.EntityKind;

/**
 * Implementation of {@link IPermIdDAO}.
 * 
 * @author Izabela Adamczyk
 */
public class PermIdDAO extends AbstractDAO implements IPermIdDAO {

    private static final Logger operationLog = LogFactory.getLogger(LogCategory.OPERATION, SampleDAO.class);

    private final static String PERM_ID_DATE_FORMAT_PATTERN = "yyyyMMddHHmmssSSS";

    protected PermIdDAO(final SessionFactory sessionFactory, final DatabaseInstancePE databaseInstance) {
        super(sessionFactory, databaseInstance);
    }

    public String createPermId() {
        long id = getNextSequenceId(SequenceNames.PERM_ID_SEQUENCE);
        return DateFormatUtils.format(new Date(), PERM_ID_DATE_FORMAT_PATTERN) + "-" + Long.toString(id);
    }

    public IEntityInformationHolderDTO tryToFindByPermId(String permId, EntityKind entityKind) {
        assert permId != null : "Unspecified permId";
        final DetachedCriteria criteria = DetachedCriteria.forClass(entityKind.getEntityClass());
        criteria.add(Restrictions.eq("permId", permId));
        final List<IEntityInformationHolderDTO> list = cast(getHibernateTemplate().findByCriteria(criteria));
        final IEntityInformationHolderDTO entity = tryFindEntity(list, entityKind.name());
        if (operationLog.isDebugEnabled()) {
            operationLog.debug(String.format("%s '%s' found for permId '%s'.", entityKind.name(), entity, permId));
        }
        return entity;
    }

}