Spring Framework - GenericBeanDefinition Examples

package com.logicbig.example;

import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.beans.factory.support.GenericBeanDefinition;

import java.util.Date;

public class GenericBeanDefinitionExample {

    public static void main (String[] args) {
        DefaultListableBeanFactory context =
                  new DefaultListableBeanFactory();

        GenericBeanDefinition gbd = new GenericBeanDefinition();
        gbd.setBeanClass(MyBean.class);

        MutablePropertyValues mpv = new MutablePropertyValues();
        mpv.add("date", new Date());

        //alternatively we can use:
        // gbd.getPropertyValues().addPropertyValue("date", new Date());
        gbd.setPropertyValues(mpv);

        context.registerBeanDefinition("myBeanName", gbd);

        MyBean bean = context.getBean(MyBean.class);
        bean.doSomething();
    }

    private static class MyBean {
        private Date date;

        public void doSomething () {
            System.out.println("from my bean, date: " + date);
        }

        public void setDate (Date date) {
            this.date = date;
        }
    }
}

package com.logicbig.example;

import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.beans.factory.support.GenericBeanDefinition;

public class InjectingOtherBeans {

    public static void main (String[] args) {
        DefaultListableBeanFactory context =
                  new DefaultListableBeanFactory();

        //define and register MyOtherBean
        GenericBeanDefinition beanOtherDef = new GenericBeanDefinition();
        beanOtherDef.setBeanClass(MyOtherBean.class);
        context.registerBeanDefinition("other", beanOtherDef);

        //definine and register myBean
        GenericBeanDefinition beanDef = new GenericBeanDefinition();
        beanDef.setBeanClass(MyBean.class);
        MutablePropertyValues mpv = new MutablePropertyValues();
        mpv.addPropertyValue("otherBean", context.getBean("other"));
        beanDef.setPropertyValues(mpv);
        context.registerBeanDefinition("myBean", beanDef);

        //using MyBean instance
        MyBean bean = context.getBean(MyBean.class);
        bean.doSomething();
    }

    private static class MyBean {
        private MyOtherBean otherBean;

        public void setOtherBean (MyOtherBean otherBean) {
            this.otherBean = otherBean;
        }

        public void doSomething () {
            otherBean.doSomething();
        }
    }

    private static class MyOtherBean {

        public void doSomething () {
            System.out.println("from other bean ");
        }
    }
}

package com.logicbig.example;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.beans.factory.support.GenericBeanDefinition;

public class InjectingOtherBeans2 {

    public static void main (String[] args) {
        DefaultListableBeanFactory context =
                  new DefaultListableBeanFactory();

        //define and register MyOtherBean
        GenericBeanDefinition beanOtherDef = new GenericBeanDefinition();
        beanOtherDef.setBeanClass(MyOtherBean.class);
        context.registerBeanDefinition("other", beanOtherDef);

        //define and register myBean
        GenericBeanDefinition beanDef = new GenericBeanDefinition();
        beanDef.setBeanClass(MyBean.class);
        beanDef.getPropertyValues().
                  addPropertyValue("otherBean", context.getBean("other"));

        context.registerBeanDefinition("myBean", beanDef);

        //using MyBean instance
        MyBean bean = context.getBean(MyBean.class);
        bean.doSomething();
    }

    private static class MyBean {
        private MyOtherBean otherBean;

        public void setOtherBean (MyOtherBean otherBean) {
            this.otherBean = otherBean;
        }

        public void doSomething () {
            otherBean.doSomething();
        }
    }

    private static class MyOtherBean {

        public void doSomething () {
            System.out.println("from other bean ");
        }
    }
}