001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2008-2012 SonarSource
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.core.persistence.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 static final String ID = "derby";
035    
036      public String getId() {
037        return ID;
038      }
039    
040      public String getActiveRecordDialectCode() {
041        return "derby";
042      }
043    
044      public String getActiveRecordJdbcAdapter() {
045        return "jdbc";
046      }
047    
048      public Class<? extends org.hibernate.dialect.Dialect> getHibernateDialectClass() {
049        return DerbyWithDecimalDialect.class;
050      }
051    
052      public boolean matchesJdbcURL(String jdbcConnectionURL) {
053        return StringUtils.startsWithIgnoreCase(jdbcConnectionURL, "jdbc:derby:");
054      }
055    
056      public String getDefaultDriverClassName() {
057        return "org.apache.derby.jdbc.ClientDriver";
058      }
059    
060      public String getConnectionInitStatement(String schema) {
061        return null;
062      }
063    
064      public static class DerbyWithDecimalDialect extends DerbyDialect {
065        public DerbyWithDecimalDialect() {
066          super();
067          registerColumnType(Types.DOUBLE, "decimal");
068          registerColumnType(Types.VARCHAR, DatabaseProperties.MAX_TEXT_SIZE, "clob");
069          registerColumnType(Types.VARBINARY, "blob");
070    
071          // Not possible to do alter column types in Derby
072          registerColumnType(Types.BIGINT, "integer");
073    
074          registerColumnType(Types.BIT, "boolean");
075        }
076    
077        @Override
078        public String toBooleanValueString(boolean bool) {
079          return bool ? "true" : "false";
080        }
081    
082        /**
083         * To be compliant with Oracle, we define on each model (ch.hortis.sonar.model classes)
084         * a sequence generator. It works on mySQL because strategy = GenerationType.AUTO, so
085         * it equals GenerationType.IDENTITY.
086         * But on derby, AUTO becomes TABLE instead of IDENTITY. So we explicitly change this behavior.
087         */
088        @Override
089        public Class getNativeIdentifierGeneratorClass() {
090          return IdentityGenerator.class;
091        }
092      }
093    
094      public String getTrueSqlValue() {
095        return "true";
096      }
097    
098      public String getFalseSqlValue() {
099        return "false";
100      }
101    }