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.dialect;
021    
022    import org.apache.commons.lang.StringUtils;
023    import org.hibernate.dialect.DerbyDialect;
024    import org.hibernate.id.IdentityGenerator;
025    import org.sonar.api.database.DatabaseProperties;
026    
027    import java.sql.Types;
028    
029    /**
030     * @since 1.12
031     */
032    public class Derby implements Dialect {
033    
034      public String getId() {
035        return "derby";
036      }
037    
038      public String getActiveRecordDialectCode() {
039        return "derby";
040      }
041    
042      public Class<? extends org.hibernate.dialect.Dialect> getHibernateDialectClass() {
043        return DerbyWithDecimalDialect.class;
044      }
045    
046      public boolean matchesJdbcURL(String jdbcConnectionURL) {
047        return StringUtils.startsWithIgnoreCase(jdbcConnectionURL, "jdbc:derby:");
048      }
049    
050      public static class DerbyWithDecimalDialect extends DerbyDialect {
051        public DerbyWithDecimalDialect() {
052          super();
053          registerColumnType(Types.DOUBLE, "decimal");
054          registerColumnType(Types.VARCHAR, DatabaseProperties.MAX_TEXT_SIZE, "clob");
055          registerColumnType(Types.VARBINARY, "blob");
056    
057          // Not possible to do alter column types in Derby
058          registerColumnType(Types.BIGINT, "integer");
059        }
060    
061        /**
062         * To be compliant with Oracle, we define on each model (ch.hortis.sonar.model classes)
063         * a sequence generator. It works on mySQL because strategy = GenerationType.AUTO, so
064         * it equals GenerationType.IDENTITY.
065         * But on derby, AUTO becomes TABLE instead of IDENTITY. So we explicitly change this behavior.
066         */
067        @Override
068        public Class getNativeIdentifierGeneratorClass() {
069          return IdentityGenerator.class;
070        }
071      }
072    
073    }