org.sonar.core.persistence.dialect.Derby.java Source code

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Here is the source code for org.sonar.core.persistence.dialect.Derby.java

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/*
 * Sonar, open source software quality management tool.
 * Copyright (C) 2008-2012 SonarSource
 * mailto:contact AT sonarsource DOT com
 *
 * Sonar is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * Sonar is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with Sonar; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
 */
package org.sonar.core.persistence.dialect;

import org.apache.commons.lang.StringUtils;
import org.hibernate.dialect.DerbyDialect;
import org.hibernate.id.IdentityGenerator;
import org.sonar.api.database.DatabaseProperties;

import java.sql.Types;

/**
 * @since 1.12
 */
public class Derby implements Dialect {

    public static final String ID = "derby";

    public String getId() {
        return ID;
    }

    public String getActiveRecordDialectCode() {
        return "derby";
    }

    public String getActiveRecordJdbcAdapter() {
        return "jdbc";
    }

    public Class<? extends org.hibernate.dialect.Dialect> getHibernateDialectClass() {
        return DerbyWithDecimalDialect.class;
    }

    public boolean matchesJdbcURL(String jdbcConnectionURL) {
        return StringUtils.startsWithIgnoreCase(jdbcConnectionURL, "jdbc:derby:");
    }

    public String getDefaultDriverClassName() {
        return "org.apache.derby.jdbc.ClientDriver";
    }

    public String getConnectionInitStatement(String schema) {
        return null;
    }

    public static class DerbyWithDecimalDialect extends DerbyDialect {
        public DerbyWithDecimalDialect() {
            super();
            registerColumnType(Types.DOUBLE, "decimal");
            registerColumnType(Types.VARCHAR, DatabaseProperties.MAX_TEXT_SIZE, "clob");
            registerColumnType(Types.VARBINARY, "blob");

            // Not possible to do alter column types in Derby
            registerColumnType(Types.BIGINT, "integer");

            registerColumnType(Types.BIT, "boolean");
        }

        @Override
        public String toBooleanValueString(boolean bool) {
            return bool ? "true" : "false";
        }

        /**
         * To be compliant with Oracle, we define on each model (ch.hortis.sonar.model classes)
         * a sequence generator. It works on mySQL because strategy = GenerationType.AUTO, so
         * it equals GenerationType.IDENTITY.
         * But on derby, AUTO becomes TABLE instead of IDENTITY. So we explicitly change this behavior.
         */
        @Override
        public Class getNativeIdentifierGeneratorClass() {
            return IdentityGenerator.class;
        }
    }

    public String getTrueSqlValue() {
        return "true";
    }

    public String getFalseSqlValue() {
        return "false";
    }
}