MyBatisTransactionalTest.java

package com.mirkorossini.transactionaltest;

import com.google.inject.*;
import org.apache.ibatis.session.SqlSessionManager;
import org.apache.ibatis.transaction.jdbc.JdbcTransactionFactory;
import org.mybatis.guice.MyBatisModule;
import org.mybatis.guice.datasource.builtin.PooledDataSourceProvider;
import org.mybatis.guice.datasource.helper.JdbcHelper;
import org.mybatis.guice.transactional.Transactional;

import javax.inject.Inject;

public class MyBatisTransactionalTest {
    private static final String ENV = "test";

    private final static Module MY_BATIS_MODULE = new MyBatisModule() {
        @Override
        protected void initialize() {
            environmentId(ENV);
            install(JdbcHelper.H2_EMBEDDED);
            bindDataSourceProviderType(PooledDataSourceProvider.class);
            bindTransactionFactoryType(JdbcTransactionFactory.class);
        }
    };

    public interface MyInterface {
            boolean isTransactional();
    }

    public static class MyImplementation implements MyInterface {

        private final SqlSessionManager sqlSessionManager;

        @Inject
        public MyImplementation(final SqlSessionManager sqlSessionManager
        ) {
            this.sqlSessionManager = sqlSessionManager;
        }

        @Transactional
        @Override
        public boolean isTransactional() {
            return sqlSessionManager.isManagedSessionStarted();
        }
    }

    private static void testTransactional(final Module privateModule) {
        final Injector injector = Guice.createInjector(
                Stage.DEVELOPMENT, privateModule);
        if (!injector.getInstance(MyImplementation.class).isTransactional()) {
            throw new RuntimeException("Not transactional");
        };
    }

    public static void main (String[] args) {

        final Module privateModule = new PrivateModule() {
            @Override
            protected void configure() {
                install(MY_BATIS_MODULE);
                bind(MyImplementation.class);
                expose(MyImplementation.class);
                expose(SqlSessionManager.class);
            }
        };

        testTransactional(privateModule);

        final Module privateModuleBindingTheinterface = new PrivateModule() {
            @Override
            protected void configure() {
                install(MY_BATIS_MODULE);
                bind(MyInterface.class).to(MyImplementation.class);
                expose(MyInterface.class);
                expose(SqlSessionManager.class);
            }
        };
        testTransactional(privateModuleBindingTheinterface);
    }

}