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 javax.jdo.annotations.Column;
021    import javax.jdo.annotations.IdentityType;
022    import javax.jdo.annotations.Inheritance;
023    import javax.jdo.annotations.InheritanceStrategy;
024    import javax.jdo.annotations.PersistenceCapable;
025    
026    /**
027     * <p>
028     * Persistent index information for fields of type {@link String} being longer than 255 characters (e.g. <code>CLOB</code>).
029     * </p>
030     * @author Marco หงุ่ยตระกูล-Schulze - marco at nightlabs dot de
031     */
032    @PersistenceCapable(identityType=IdentityType.APPLICATION, detachable="true")
033    @Inheritance(strategy=InheritanceStrategy.NEW_TABLE)
034    // TODO The following "@Unique" does not work at all in Derby and only with special syntax in MySQL
035    // (note the length "(255)" behind the "indexkey"):
036    //    ALTER TABLE indexentrystringlong ADD CONSTRAINT UNIQUE KEY (indexkey(255), fieldmeta_fieldid_oid)
037    // => file a bug in DataNucleus' issue tracker (should log a warning, if the underlying DB doesn't support
038    // it and should use RDBMS-specific syntax, if necessary).
039    //@Unique(members={"fieldMeta", "indexKey"})
040    public class IndexEntryStringLong
041    extends IndexEntry
042    {
043            @Column(jdbcType="CLOB")
044            private String indexKey;
045    
046            @Override
047            public String getIndexKey() {
048                    return indexKey;
049            }
050    
051            @Override
052            protected void setIndexKey(Object indexKey) {
053                    this.indexKey = (String) indexKey;
054            }
055    }