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DataChange.java
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DataChange.java
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/*
* SonarQube
* Copyright (C) 2009-2019 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.server.platform.db.migration.step;
import java.sql.Connection;
import java.sql.SQLException;
import org.sonar.api.config.Configuration;
import org.sonar.db.Database;
import org.sonar.db.dialect.Dialect;
public abstract class DataChange implements MigrationStep {
private final Database db;
public DataChange(Database db) {
this.db = db;
}
protected final Dialect getDialect() {
return db.getDialect();
}
@Override
public final void execute() throws SQLException {
try (Connection readConnection = createReadUncommittedConnection();
Connection writeConnection = createDdlConnection()) {
Context context = new Context(db, readConnection, writeConnection);
execute(context);
}
}
protected abstract void execute(Context context) throws SQLException;
private Connection createReadUncommittedConnection() throws SQLException {
Connection connection = db.getDataSource().getConnection();
connection.setAutoCommit(false);
if (connection.getMetaData().supportsTransactionIsolationLevel(Connection.TRANSACTION_READ_UNCOMMITTED)) {
connection.setTransactionIsolation(Connection.TRANSACTION_READ_UNCOMMITTED);
}
return connection;
}
private Connection createDdlConnection() throws SQLException {
Connection res = db.getDataSource().getConnection();
res.setAutoCommit(false);
return res;
}
protected static boolean isSonarCloud(Configuration configuration) {
return configuration.getBoolean("sonar.sonarcloud.enabled").orElse(false);
}
public static class Context {
private final Database db;
private final Connection readConnection;
private final Connection writeConnection;
public Context(Database db, Connection readConnection, Connection writeConnection) {
this.db = db;
this.readConnection = readConnection;
this.writeConnection = writeConnection;
}
public Select prepareSelect(String sql) throws SQLException {
return SelectImpl.create(db, readConnection, sql);
}
public Upsert prepareUpsert(String sql) throws SQLException {
return UpsertImpl.create(writeConnection, sql);
}
public MassUpdate prepareMassUpdate() {
return new MassUpdate(db, readConnection, writeConnection);
}
}
}