spring jdbcTemplate connection

[ben oliver]

Here is a code from internet sample

    


    <bean id="mysqlDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://dbhost-prospring-psql/prospring"/>
        <property name="username" value="sa"/>
        <property name="password" value=""/>
    </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>


import java.sql.Types;

import javax.sql.DataSource;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jdbc.core.SqlParameter;
import org.springframework.jdbc.object.BatchSqlUpdate;

class Main {
  public static void main(String args[]) throws Exception {
    ApplicationContext ac = new ClassPathXmlApplicationContext("context.xml", Main.class);
    DataSource dataSource = (DataSource) ac.getBean("dataSource");
    // DataSource mysqlDataSource = (DataSource) ac.getBean("mysqlDataSource");

    BatchInsert batchInsert = new BatchInsert(dataSource);
    int count = 5000;
    for (int i = 0; i < count; i++) {
      batchInsert.update(new Object[] { i + 100L, "a" + i, "b" + i, null });
    }
  }
}

class BatchInsert extends BatchSqlUpdate {
  private static final String SQL = "insert into t_customer (id, first_name, last_name, last_login, "
      + "comments) values (?, ?, ?, ?, null)";

  BatchInsert(DataSource dataSource) {
    super(dataSource, SQL);
    declareParameter(new SqlParameter(Types.INTEGER));
    declareParameter(new SqlParameter(Types.VARCHAR));
    declareParameter(new SqlParameter(Types.VARCHAR));
    declareParameter(new SqlParameter(Types.TIMESTAMP));

    setBatchSize(10);
  }

}

My question are ---

1. Using this implementation, every time when I do "update" by passing a record, does spring create a NEW database connection for me ? Or does it keep using the same one ?

2. Where and how can I configure this connection thing ?

[Arun Kumarr]

What does your update method in batchInsert do?
What code does it exactly have?

[ben oliver]

it inserts data. it uses all standard spring API.