001    /*
002     * Cumulus4j - Securing your data in the cloud - http://cumulus4j.org
003     * Copyright (C) 2011 NightLabs Consulting GmbH
004     *
005     * This program is free software: you can redistribute it and/or modify
006     * it under the terms of the GNU Affero General Public License as
007     * published by the Free Software Foundation, either version 3 of the
008     * License, or (at your option) any later version.
009     *
010     * This program is distributed in the hope that it will be useful,
011     * but WITHOUT ANY WARRANTY; without even the implied warranty of
012     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
013     * GNU Affero General Public License for more details.
014     *
015     * You should have received a copy of the GNU Affero General Public License
016     * along with this program.  If not, see <http://www.gnu.org/licenses/>.
017     */
018    package org.cumulus4j.store.model;
019    
020    import java.util.Date;
021    
022    import javax.jdo.annotations.IdentityType;
023    import javax.jdo.annotations.Inheritance;
024    import javax.jdo.annotations.InheritanceStrategy;
025    import javax.jdo.annotations.PersistenceCapable;
026    import javax.jdo.annotations.Unique;
027    
028    /**
029     * <p>
030     * Persistent index information for fields of type {@link Date}.
031     * </p>
032     * <p>
033     * This {@link IndexEntry}-subclass is used to index object-references, too. In this case,
034     * the values in {@link #getIndexKey() indexKey} are {@link DataEntry#getDataEntryID() dataEntryID}s.
035     * </p>
036     */
037    @PersistenceCapable(identityType=IdentityType.APPLICATION, detachable="true")
038    @Inheritance(strategy=InheritanceStrategy.NEW_TABLE)
039    @Unique(members={"keyStoreRefID", "fieldMeta_fieldID", "classMeta_classID", "indexKey"})
040    public class IndexEntryDate
041    extends IndexEntry
042    {
043            private Date indexKey;
044    
045            @Override
046            public Date getIndexKey() {
047                    return indexKey;
048            }
049    
050            @Override
051            protected void setIndexKey(Object indexKey) {
052                    this.indexKey = (Date) indexKey;
053            }
054    }