Spring Batch Example

JDBC Template Batch update example, In the tutorial we have discussed about batchUpdate()  method of classJdbcTemplate in Spring framework. The Batch update methods are used to executes multiple SQL updates query on a single JDBC Statement. The example given below consists of the code to delete and update data of the table Simultaneously.

context.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:util="http://www.springframework.org/schema/util"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:lang="http://www.springframework.org/schema/lang"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
       http://www.springframework.org/schema/util
       http://www.springframework.org/schema/util/spring-util-2.0.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
       http://www.springframework.org/schema/lang
       http://www.springframework.org/schema/lang/spring-lang-2.0.xsd">
          <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
                                 destroy-method="close">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://192.168.10.75:3306/komal"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>
       <bean id="lobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler">
        <property name="nativeJdbcExtractor" ref="nativeJdbcExtractor"/>
    </bean>
        <bean id="nativeJdbcExtractor"
    class="org.springframework.jdbc.support.nativejdbc.CommonsDbcpNativeJdbcExtractor"/>
       <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dataSource"/>
    </bean>
</beans>

Main.java

ApplicationContext ac = new ClassPathXmlApplicationContext("context.xml", Main.class):-ApplicationContext is the interface that is used to  provide Bean factory methods for accessing application components. Here we Creates an instance of this interface to accesscontext.xml and Main.java.

DataSource source = (DataSource) ac.getBean("dataSource"):-Data source is an Interface which provides a way for connecting to the physical data source. Here we created datasource for making connection to our xml document in which we have declared the bean.

jt.batchUpdate(new String[]{"update employee set departement = 'Finance#'", "delete from employee where EmployeeId =31" }):-With the use of this method we are executing two SQLquerysimultaneously. This method executes multiple Sql updates on a single JDBC statement.

import javax.sql.DataSource;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jdbc.core.JdbcTemplate;
class Main {
    public static void main(String args[]) {
        try {
            ApplicationContext ac = new
                    ClassPathXmlApplicationContext("context.xml", Main.class);
            DataSource source = (DataSource) ac.getBean("dataSource");
            JdbcTemplate jt = new JdbcTemplate(source);
            jt.batchUpdate(new String[]{"update employee set departement = 'Finance#'",
                        "delete from employee where EmployeeId =31"
                    });
            System.out.println("Data updated successfully");
        } catch (Exception e) {
            e.printStackTrace();
                    }
    }
}

Output of the program

Data updated successfully BUILD SUCCESSFUL (total time: 2 seconds)