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path: root/juick-server/src/main/java/com/juick/configuration/DataConfiguration.java
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package com.juick.configuration;

import org.apache.commons.dbcp2.BasicDataSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.core.env.Environment;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.transaction.annotation.TransactionManagementConfigurer;

import javax.annotation.Resource;

/**
 * Created by aalexeev on 11/11/16.
 */
@Configuration
@EnableTransactionManagement
@PropertySource(value = {"classpath:juick.conf"})
@ComponentScan(basePackages = {"com.juick.service"})
public class DataConfiguration implements TransactionManagementConfigurer {
    @Resource
    private Environment env;

    // NOTE: The close() method will be called automatically with default @Bean settings
    // But Datasource interface has no close() method
    @Bean
    public BasicDataSource dataSource() {
        BasicDataSource dataSource = new BasicDataSource();

        dataSource.setDriverClassName(env.getProperty("datasource_driver", "com.mysql.jdbc.Driver"));
        dataSource.setUrl(env.getProperty("datasource_url"));
        dataSource.setUsername(env.getProperty("datasource_user", ""));
        dataSource.setPassword(env.getProperty("datasource_password", ""));

        dataSource.setValidationQuery("select 1");

        return dataSource;
    }

    @Bean
    public PlatformTransactionManager transactionManager() {
        return new DataSourceTransactionManager(dataSource());
    }

    @Override
    public PlatformTransactionManager annotationDrivenTransactionManager() {
        return transactionManager();
    }

    @Bean
    public JdbcTemplate jdbcTemplate() {
        return new JdbcTemplate(dataSource());
    }
}