Spring: p-namespace

Spring provides p-namespace, to define properties of a bean in convenient way.

For example,

 <bean id="osho" class="com.sample.pojo.Author">
  <property name="firstName" value="Chandra Mohan" />
  <property name="lastName" value="Jain" />
  <property name="country" value="India" />
  <property name="dateOfBirth" value="11 December 1931" />
 </bean>

Above bean definition can be written like below using p-namespace.

 <bean name="osho" class="com.sample.pojo.Author" p:firstName="Chandra Mohan"
  p:lastName="Jain" p:country="India" p:dateOfBirth="11 December 1931" />

Following is the complete working application.

Author.java

package com.sample.pojo;

public class Author {
 private String firstName;
 private String lastName;
 private String dateOfBirth;
 private String country;

 public String getFirstName() {
  return firstName;
 }

 public void setFirstName(String firstName) {
  this.firstName = firstName;
 }

 public String getLastName() {
  return lastName;
 }

 public void setLastName(String lastName) {
  this.lastName = lastName;
 }

 public String getDateOfBirth() {
  return dateOfBirth;
 }

 public void setDateOfBirth(String dateOfBirth) {
  this.dateOfBirth = dateOfBirth;
 }

 public String getCountry() {
  return country;
 }

 public void setCountry(String country) {
  this.country = country;
 }

 @Override
 public String toString() {
  StringBuilder builder = new StringBuilder();
  builder.append("Author [firstName=").append(firstName).append(", lastName=").append(lastName)
    .append(", dateOfBirth=").append(dateOfBirth).append(", country=").append(country).append("]");
  return builder.toString();
 }

}

myConfiguration.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:p="http://www.springframework.org/schema/p"
 xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd">

 <bean name="osho" class="com.sample.pojo.Author" p:firstName="Chandra Mohan"
  p:lastName="Jain" p:country="India" p:dateOfBirth="11 December 1931" />

</beans>

HelloWorld.java

package com.sample.test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.sample.pojo.Author;

public class HelloWorld {
 public static void main(String args[]) {
  ApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "myConfiguration.xml" });

  Author author = context.getBean("osho", Author.class);

  System.out.println(author);

  ((ClassPathXmlApplicationContext) context).close();
 }
}

Run HelloWorld.java application, you can able to see following output.

Author [firstName=Chandra Mohan, lastName=Jain, dateOfBirth=11 December 1931, country=India]

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