001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2009 SonarSource SA
004     * mailto:contact AT sonarsource DOT com
005     *
006     * Sonar is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * Sonar is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public
017     * License along with Sonar; if not, write to the Free Software
018     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019     */
020    package org.sonar.api.database.id;
021    
022    import org.hibernate.MappingException;
023    import org.hibernate.dialect.Dialect;
024    import org.hibernate.id.PersistentIdentifierGenerator;
025    import org.hibernate.id.SequenceGenerator;
026    import org.hibernate.type.Type;
027    
028    import java.util.Properties;
029    
030    /**
031     * if the underlying database is PostgreSQL, the sequence
032     * naming convention is different and includes the primary key
033     * column name
034     */
035    public class PostgreSQLSequenceGenerator extends SequenceGenerator {
036    
037      public static final String SEQUENCE_NAME_SEPARATOR = "_";
038      public static final String SEQUENCE_NAME_SUFFIX = "seq";
039    
040      @Override
041      public void configure(Type type, Properties params, Dialect dialect)
042          throws MappingException {
043    
044        String tableName = params.getProperty(PersistentIdentifierGenerator.TABLE);
045        String columnName = params.getProperty(PersistentIdentifierGenerator.PK);
046    
047        if (tableName != null && columnName != null) {
048          StringBuilder sequenceNameBuilder = new StringBuilder();
049    
050          sequenceNameBuilder.append(tableName);
051          sequenceNameBuilder.append(SEQUENCE_NAME_SEPARATOR);
052          sequenceNameBuilder.append(columnName);
053          sequenceNameBuilder.append(SEQUENCE_NAME_SEPARATOR);
054          sequenceNameBuilder.append(SEQUENCE_NAME_SUFFIX);
055    
056          params.setProperty(SEQUENCE, sequenceNameBuilder.toString());
057        }
058    
059        super.configure(type, params, dialect);
060      }
061    
062    }