net.landora.video.data.AbstractDataManager.java Source code

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Here is the source code for net.landora.video.data.AbstractDataManager.java

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/**
 * Copyright (C) 2012-2014 Blake Dickie
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package net.landora.video.data;

import net.landora.video.data.handlers.CalendarTypeHandler;
import net.landora.video.data.handlers.DateCalendarTypeHandler;
import org.apache.ibatis.mapping.Environment;
import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.apache.ibatis.transaction.TransactionFactory;
import org.apache.ibatis.transaction.jdbc.JdbcTransactionFactory;
import org.apache.ibatis.type.JdbcType;
import java.util.Calendar;
import java.util.List;

/**
 *
 * @author bdickie
 */
public abstract class AbstractDataManager {

    protected AbstractDataManager() {

    }

    protected abstract List<? extends Class> getMapperClasses();

    protected abstract List<? extends Class> getAliasTypeClasses();

    private SqlSessionFactory factory;

    private synchronized SqlSessionFactory getFactory() {
        if (factory == null) {
            TransactionFactory transactionFactory = new JdbcTransactionFactory();
            Environment environment = new Environment("development", transactionFactory,
                    DatabaseConnectionManager.getInstance().getDataSource());
            Configuration configuration = new Configuration(environment);

            configuration.setCacheEnabled(true);
            configuration.setLazyLoadingEnabled(false);
            configuration.getTypeHandlerRegistry().register(Calendar.class, JdbcType.TIMESTAMP,
                    new CalendarTypeHandler());
            configuration.getTypeHandlerRegistry().register(Calendar.class, JdbcType.DATE,
                    new DateCalendarTypeHandler());

            for (Class<?> clazz : getAliasTypeClasses()) {
                String className = clazz.getSimpleName();
                configuration.getTypeAliasRegistry().registerAlias(className, clazz);
            }

            for (Class<?> clazz : getMapperClasses()) {
                configuration.addMapper(clazz);
            }

            factory = new SqlSessionFactoryBuilder().build(configuration);
        }
        return factory;
    }

    public SqlSession openSession() {
        //        return sessionFactory.openSession(ExecutorType.BATCH);
        return getFactory().openSession();
    }
}