up

Author: ranji

springcore-beans/README.md

@@ -1,8 +1,14 @@
-## TOOLS & TECHNOLOGIES
+### TOOLS & TECHNOLOGIES
   1. Java 1.8
   2. Spring Framework
 
-## TOPICS COVERED
-  1. 
+### TOPICS/CONCEPTS COVERED
+  1. BeanFactoryAware
+  2. BeanNameAware
+  3. DisposableBean Concept
+  4. BeanPostProcessor
+  5. Bean scopes
 
-## STEPS to run Application
+### HOW TO RUN?
+  1. Run As Java Application
+  2. Run As JUnit Testcase

springcore-beans/src/main/java/jbr/springbeans/aware/BeanFactoryAwareMain.java renamed to springcore-beans/src/main/java/jbr/springcore/bean/aware/BeanFactoryAwareMain.java

@@ -1,9 +1,9 @@
-package jbr.springbeans.aware;
+package jbr.springcore.bean.aware;
 
 import org.springframework.context.support.AbstractApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 
-import jbr.springbeans.model.Cycle;
+import jbr.springcore.model.Cycle;
 
 public class BeanFactoryAwareMain {
 

springcore-beans/src/main/java/jbr/springbeans/aware/BeanNameAwareMain.java renamed to springcore-beans/src/main/java/jbr/springcore/bean/aware/BeanNameAwareMain.java

@@ -1,9 +1,9 @@
-package jbr.springbeans.aware;
+package jbr.springcore.bean.aware;
 
 import org.springframework.context.support.AbstractApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 
-import jbr.springbeans.model.Train;
+import jbr.springcore.model.Train;
 
 public class BeanNameAwareMain {
 

springcore-beans/src/main/java/jbr/springcore/bean/disposable/MyDisposableBean.java

@@ -0,0 +1,28 @@
+package jbr.springcore.bean.disposable;
+
+import org.springframework.beans.factory.DisposableBean;
+import org.springframework.beans.factory.InitializingBean;
+
+public class MyDisposableBean implements InitializingBean, DisposableBean {
+
+  @Override
+  public void destroy() throws Exception {
+    System.out.println("MyDisposableBean: in destory");
+  }
+
+  @Override
+  public void afterPropertiesSet() throws Exception {
+    System.out.println("MyDisposableBean: in afterPropertiesSet");
+  }
+
+  private String greetings;
+
+  public String getGreetings() {
+    return greetings;
+  }
+
+  public void setGreetings(String greetings) {
+    this.greetings = greetings;
+  }
+
+}

springcore-beans/src/main/java/jbr/springbeans/methods/SpringBeanInitDestroy.java renamed to springcore-beans/src/main/java/jbr/springcore/bean/methods/SpringBeanInitDestroy.java

@@ -1,9 +1,9 @@
-package jbr.springbeans.methods;
+package jbr.springcore.bean.methods;
 
 import org.springframework.context.support.AbstractApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 
-import jbr.springbeans.model.Car;
+import jbr.springcore.model.Car;
 
 /**
  * An example for Spring Init and Destory methods.

springcore-beans/src/main/java/jbr/springbeans/methods/SpringBeanMethods.java renamed to springcore-beans/src/main/java/jbr/springcore/bean/methods/SpringBeanMethods.java

@@ -1,9 +1,9 @@
-package jbr.springbeans.methods;
+package jbr.springcore.bean.methods;
 
 import org.springframework.context.support.AbstractApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 
-import jbr.springbeans.model.Bike;
+import jbr.springcore.model.Bike;
 
 /**
  * An example for Spring Bean Methods.

springcore-beans/src/main/java/jbr/springcore/bean/postprocessor/Email.java

@@ -0,0 +1,23 @@
+package jbr.springcore.bean.postprocessor;
+
+public class Email {
+
+  private String message;
+
+  public String getMessage() {
+    return message;
+  }
+
+  public void setMessage(String message) {
+    this.message = message;
+  }
+
+  public void init() {
+    System.out.println("Email: Init..");
+  }
+
+  public void destroy() {
+    System.out.println("Email: destroy...");
+  }
+
+}

springcore-beans/src/main/java/jbr/springcore/bean/postprocessor/MyBeanPostProcessor.java

@@ -0,0 +1,20 @@
+package jbr.springcore.bean.postprocessor;
+
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.config.BeanPostProcessor;
+
+public class MyBeanPostProcessor implements BeanPostProcessor {
+
+  @Override
+  public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
+    System.out.println("Post Process After Initialization: " + beanName);
+    return bean;
+  }
+
+  @Override
+  public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
+    System.out.println("Post Process Before Initialization: " + beanName);
+    return bean;
+  }
+
+}

springcore-beans/src/main/java/jbr/springcore/bean/scope/BeanScope.java

@@ -0,0 +1,21 @@
+package jbr.springcore.bean.scope;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+import jbr.springcore.model.PersonVO;
+
+public class BeanScope {
+
+  public static void main(String[] args) {
+    ApplicationContext classPathContext = new ClassPathXmlApplicationContext("spring-beans.xml");
+    PersonVO person1 = (PersonVO) classPathContext.getBean("person");
+    person1.setName("Ranjith");
+    System.out.println("PersonVO1 Name: " + person1.getName());
+
+    PersonVO person2 = (PersonVO) classPathContext.getBean("person");
+    //person2.setName("Sekar");
+    System.out.println("PersonVO2 Name: " + person2.getName());
+
+  }
+}

springcore-beans/src/main/java/jbr/springcore/bean/scope/BeanScopeAnno.java

@@ -0,0 +1,19 @@
+package jbr.springcore.bean.scope;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+import jbr.springcore.model.PersonAnno;
+
+public class BeanScopeAnno {
+
+  public static void main(String[] args) {
+    ApplicationContext classPathContext = new ClassPathXmlApplicationContext("spring-beans.xml");
+    PersonAnno person1 = (PersonAnno) classPathContext.getBean("personAnno");
+    person1.setName("Ranjith");
+    System.out.println("Person1 Name: " + person1.getName());
+
+    PersonAnno person2 = (PersonAnno) classPathContext.getBean("personAnno");
+    System.out.println("Person2 Name: " + person2.getName());
+  }
+}

springcore-beans/src/main/java/jbr/springcore/bean/scope/JavaSingleton.java

@@ -0,0 +1,21 @@
+package jbr.springcore.bean.scope;
+
+public class JavaSingleton {
+
+  private static JavaSingleton javaSingleton;
+
+  public static JavaSingleton getInstance() {
+
+    if (null != javaSingleton) {
+      return javaSingleton;
+    } else {
+      javaSingleton = new JavaSingleton();
+    }
+
+    return javaSingleton;
+  }
+
+  private JavaSingleton() {
+  }
+
+}

springcore-beans/src/main/java/jbr/springcore/bean/scope/PersonMain.java

@@ -0,0 +1,28 @@
+package jbr.springcore.bean.scope;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+import jbr.springcore.model.PersonVO;
+
+public class PersonMain {
+
+  ApplicationContext applicationContext;
+  PersonVO person1;
+  PersonVO person2;
+
+  PersonMain() {
+    applicationContext = new ClassPathXmlApplicationContext("beanscopes-beans.xml");
+    person1 = (PersonVO) applicationContext.getBean("person");
+    System.out.println("Person 1 Object HashCode: " + person1.hashCode());
+
+    person2 = (PersonVO) applicationContext.getBean("person");
+    System.out.println("Person 2 Object HashCode: " + person2.hashCode());
+
+  }
+
+  public static void main(String[] args) {
+    PersonMain main = new PersonMain();
+  }
+
+}

springcore-beans/src/main/java/jbr/springbeans/scopes/SpringBeanScopes.java renamed to springcore-beans/src/main/java/jbr/springcore/bean/scope/SpringBeanScopes.java

@@ -1,9 +1,9 @@
-package jbr.springbeans.scopes;
+package jbr.springcore.bean.scope;
 
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 
-import jbr.springbeans.model.Person;
+import jbr.springcore.model.Person;
 
 /**
  * An example program to test Spring Singleton.

springcore-beans/src/main/java/jbr/springbeans/scopes/SpringSingleton.java renamed to springcore-beans/src/main/java/jbr/springcore/bean/scope/SpringSingleton.java

@@ -1,9 +1,9 @@
-package jbr.springbeans.scopes;
+package jbr.springcore.bean.scope;
 
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 
-import jbr.springbeans.model.Person;
+import jbr.springcore.model.Person;
 
 /**
  * An example program for testing Spring Singleton. Singleton maintained for
@@ -15,13 +15,13 @@
 public class SpringSingleton {
 
   public static void main(String[] args) {
-    ApplicationContext applicationContext1 = new ClassPathXmlApplicationContext("springbeans-beanscopes.xml");
+    ApplicationContext applicationContext1 = new ClassPathXmlApplicationContext("springbeans-scopes.xml");
     Person person1 = (Person) applicationContext1.getBean("person");
     System.out.println("applicationContext1 Person1 Object HashCode: " + person1.hashCode());
     Person person2 = (Person) applicationContext1.getBean("person");
     System.out.println("applicationContext1 Person2 Object HashCode: " + person2.hashCode());
 
-    ApplicationContext applicationContext2 = new ClassPathXmlApplicationContext("springbeans-beanscopes.xml");
+    ApplicationContext applicationContext2 = new ClassPathXmlApplicationContext("springbeans-scopes.xml");
     person1 = (Person) applicationContext2.getBean("person");
     System.out.println("applicationContext2 Person1 Object HashCode: " + person1.hashCode());
     person2 = (Person) applicationContext2.getBean("person");

springcore-beans/src/main/java/jbr/springbeans/model/Address.java renamed to springcore-beans/src/main/java/jbr/springcore/model/Address.java

@@ -1,4 +1,4 @@
-package jbr.springbeans.model;
+package jbr.springcore.model;
 
 /**
  * Address Model Object.

springcore-beans/src/main/java/jbr/springbeans/model/Bike.java renamed to springcore-beans/src/main/java/jbr/springcore/model/Bike.java

@@ -1,4 +1,4 @@
-package jbr.springbeans.model;
+package jbr.springcore.model;
 
 /**
  * Person Model Object.

springcore-beans/src/main/java/jbr/springbeans/model/Car.java renamed to springcore-beans/src/main/java/jbr/springcore/model/Car.java

@@ -1,4 +1,4 @@
-package jbr.springbeans.model;
+package jbr.springcore.model;
 
 import org.springframework.beans.factory.DisposableBean;
 import org.springframework.beans.factory.InitializingBean;

springcore-beans/src/main/java/jbr/springbeans/model/Cycle.java renamed to springcore-beans/src/main/java/jbr/springcore/model/Cycle.java

@@ -1,4 +1,4 @@
-package jbr.springbeans.model;
+package jbr.springcore.model;
 
 import org.springframework.beans.BeansException;
 import org.springframework.beans.factory.BeanFactory;

springcore-beans/src/main/java/jbr/springbeans/model/Name.java renamed to springcore-beans/src/main/java/jbr/springcore/model/Name.java

@@ -1,4 +1,4 @@
-package jbr.springbeans.model;
+package jbr.springcore.model;
 
 public class Name {
 

springcore-beans/src/main/java/jbr/springbeans/model/Person.java renamed to springcore-beans/src/main/java/jbr/springcore/model/Person.java

@@ -1,4 +1,4 @@
-package jbr.springbeans.model;
+package jbr.springcore.model;
 
 /**
  * Person Model Object.

springcore-beans/src/main/java/jbr/springcore/model/PersonAnno.java

@@ -0,0 +1,38 @@
+package jbr.springcore.model;
+
+import org.springframework.context.annotation.Scope;
+import org.springframework.stereotype.Service;
+
+@Service
+@Scope("prototype")
+public class PersonAnno {
+
+  private String name;
+  private int age;
+  private String address;
+
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public int getAge() {
+    return age;
+  }
+
+  public void setAge(int age) {
+    this.age = age;
+  }
+
+  public String getAddress() {
+    return address;
+  }
+
+  public void setAddress(String address) {
+    this.address = address;
+  }
+
+}