Java/Spring/BasicDataSource

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BasicDataSource from apache

   <source lang="java">
      

File: EmployeeDaoImpl.java import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Types; import java.util.ArrayList; import java.util.Collections; import java.util.List; import javax.sql.DataSource; import org.springframework.jdbc.core.SqlParameter; import org.springframework.jdbc.core.support.JdbcDaoSupport; import org.springframework.jdbc.object.MappingSqlQuery; import org.springframework.jdbc.support.nativejdbc.SimpleNativeJdbcExtractor; public class EmployeeDaoImpl extends JdbcDaoSupport {

 private LastNameAndAgeQuery lastNameAndAgeQuery;
 protected void initDao() throws Exception {
   super.initDao();
   getJdbcTemplate().setNativeJdbcExtractor(new SimpleNativeJdbcExtractor());
   lastNameAndAgeQuery = new LastNameAndAgeQuery(getDataSource());
 }
 public List getEmployeesForLastNameAndAge(String lastName, Integer age) {
   return lastNameAndAgeQuery.execute(new Object[] { lastName, age });
 }

} class LastNameAndAgeQuery extends MappingSqlQuery {

 private static final String SQL_QUERY = "SELECT * FROM employee WHERE name_last = ? AND age = ?";
 public LastNameAndAgeQuery(DataSource ds) {
   super(ds, SQL_QUERY);
   declareParameter(new SqlParameter("name_last", Types.VARCHAR));
   declareParameter(new SqlParameter("age", Types.INTEGER));
   compile();
 }
 protected Object mapRow(ResultSet resultSet, int row) throws SQLException {
   Employee employee = new Employee();
   employee.setId(resultSet.getInt("id"));
   employee.getName().setFirst(resultSet.getString("name_first"));
   employee.getName().setMiddle(resultSet.getString("name_middle"));
   employee.getName().setLast(resultSet.getString("name_last"));
   employee.getAddress().setLine1(resultSet.getString("address_line1"));
   employee.getAddress().setLine2(resultSet.getString("address_line2"));
   employee.getAddress().setCity(resultSet.getString("address_city"));
   employee.getAddress().setState(resultSet.getString("address_state"));
   employee.getAddress().setZip(resultSet.getString("address_zip"));
   employee.setAge(resultSet.getInt("age"));
   return employee;
 }

} class Employee {

 private Integer id;
 private Name name = new Name();
 private Integer age;
 private Sex sex;
 private Address address = new Address();
 private List<PhoneNumber> phoneNumbers = new ArrayList<PhoneNumber>();
 public Employee() {
 }
 public Employee(String firstName, String lastName) {
   this.getName().setFirst(firstName);
   this.getName().setLast(lastName);
 }
 void setId(Integer id) {
   this.id = id;
 }
 public Integer getId() {
   return id;
 }
 public Address getAddress() {
   return address;
 }
 public Integer getAge() {
   return age;
 }
 public void setAge(Integer age) {
   this.age = age;
 }
 public Name getName() {
   return name;
 }
 public List<PhoneNumber> getPhoneNumbers() {
   return Collections.unmodifiableList(phoneNumbers);
 }
 public void addPhoneNumber(PhoneNumber phoneNumber) {
   this.phoneNumbers.add(phoneNumber);
 }
 public void removePhoneNumber(PhoneNumber phoneNumber) {
   this.phoneNumbers.remove(phoneNumber);
 }
 public void removePhoneNumber(int index) {
   this.phoneNumbers.remove(index);
 }
 public Sex getSex() {
   return sex;
 }
 public void setSex(Sex sex) {
   this.sex = sex;
 }

} abstract class Sex {

 public static final Sex MALE = new Male();
 public static final Sex FEMALE = new Female();
 public boolean equals(Object o) {
   if (o == null) {
     return false;
   }
   return getClass().equals(o.getClass());
 }

} class PhoneNumber { } class Address {

 private String line1;
 private String line2;
 private String city;
 private String state;
 private String zip;
 public void setLine1(String line1) {
   this.line1 = line1;
 }
 public String getLine1() {
   return this.line1;
 }
 public void setLine2(String line2) {
   this.line2 = line2;
 }
 public String getLine2() {
   return this.line2;
 }
 public void setCity(String city) {
   this.city = city;
 }
 public String getCity() {
   return this.city;
 }
 public void setState(String state) {
   this.state = state;
 }
 public String getState() {
   return this.state;
 }
 public void setZip(String zip) {
   this.zip = zip;
 }
 public String getZip() {
   return this.zip;
 }

} final class Male extends Sex {

 protected Male() {
 }

} final class Female extends Sex {

 protected Female() {
 }

} class Name {

 private String first;
 private String middle;
 private String last;
 public void setFirst(String first) {
   this.first = first;
 }
 public String getFirst() {
   return this.first;
 }
 public void setMiddle(String middle) {
   this.middle = middle;
 }
 public String getMiddle() {
   return this.middle;
 }
 public void setLast(String last) {
   this.last = last;
 }
 public String getLast() {
   return this.last;
 }

}

File: Main.java import java.util.Date; import java.util.GregorianCalendar; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; class Main {

 public static void main(String args[]) throws Exception {
   ApplicationContext ctx = new ClassPathXmlApplicationContext(
       "context.xml");
   EmployeeDaoImpl ws = (EmployeeDaoImpl) ctx.getBean("employeeDao");
 }

}

File: context.xml <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"

   "http://www.springframework.org/dtd/spring-beans.dtd">

<beans> <bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource"

     destroy-method="close">
 <property name="driverClassName" value="org.hsqldb.jdbcDriver"/>
 <property name="url" value="jdbc:hsqldb:mem:."/>
 <property name="username" value="sa"/>
 <property name="password" value=""/>

</bean> <bean id="employeeDao" class="EmployeeDaoImpl">

 <property name="dataSource" ref="dataSource"/>

</bean> </beans>


      </source>