wisemapping-open-source/wise-webapp/src/main/java/com/wisemapping/config/HibernateConfig.java

package com.wisemapping.config;

import org.apache.commons.dbcp2.BasicDataSource;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.orm.hibernate5.HibernateTransactionManager;
import org.springframework.orm.hibernate5.LocalSessionFactoryBean;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import javax.sql.DataSource;
import java.util.Properties;

@Configuration
@EnableTransactionManagement
public class HibernateConfig {

    @Value("${database.hibernate.dialect}")
    private String dbDialect;

    @Value("${database.driver}")
    private String dbDriver;

    @Value("${database.url}")
    private String dbUrl;

    @Value("${database.username}")
    private String dbUsername;
    @Value("${database.password}")
    private String dbPassword;

    @Value("${database.validation.enabled:true}")
    private boolean dbSetOnBorrow;

    @Value("${database.validation.query:SELECT 1}")
    private String dbValQuery;

    @Bean
    public LocalSessionFactoryBean sessionFactory() {
        final LocalSessionFactoryBean result = new LocalSessionFactoryBean();
        result.setPackagesToScan("com.wisemapping.model");
        result.setDataSource(dataSource());
        result.setHibernateProperties(hibernateProperties());

        return result;
    }


    @Bean
    public HibernateTransactionManager hibernateTransactionManager() {
        final HibernateTransactionManager result = new HibernateTransactionManager();
        result.setNestedTransactionAllowed(true);
        // @Todo: Am I creatting two instances ???
        result.setSessionFactory(sessionFactory().getObject());
        return result;
    }

    private Properties hibernateProperties() {
        final Properties result = new Properties();
        result.setProperty("hibernate.dialect", dbDialect);
        result.setProperty("hibernate.default_batch_fetch_size", "200");
        result.setProperty("hibernate.nestedTransactionAllowed", "true");
        result.setProperty("hibernate.auto_quote_keyword", "true");

        return result;
    }

    @Bean
    public DataSource dataSource() {
        final BasicDataSource result = new BasicDataSource();
        result.setDriverClassName(dbDriver);
        result.setUrl(dbUrl);
        result.setUsername(dbUsername);
        result.setPassword(dbPassword);
        result.setTestOnBorrow(dbSetOnBorrow);

        result.setDefaultQueryTimeout(15);
        result.setMaxTotal(100);
        result.setMaxIdle(30);
        result.setInitialSize(5);
        result.setMaxWaitMillis(10000);
        result.setValidationQuery(dbValQuery);

        return result;
    }
}