Example of multiple criterias in custom qualifier and interface with multiple imps

annotated-injection.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	http://www.springframework.org/schema/beans/spring-beans.xsd 
	http://www.springframework.org/schema/context 
	http://www.springframework.org/schema/context/spring-context.xsd">

	<context:annotation-config/>
	<context:component-scan base-package="com.lq.interfaceimpl"></context:component-scan>
	
	<!-- Below is example for multiple attributes of qualifiers -->
	<bean id="hw1" class="com.lq.interfaceimpl.HardWorker">
		<property name="name" value="HARD-LOW"/>
		<qualifier type="com.lq.interfaceimpl.Criteria">
			<attribute key="type" value="HARD"/>
			<attribute key="rate" value="LOW"/>
		</qualifier>
	</bean>
	<bean id="lw1" class="com.lq.interfaceimpl.HardlyWorks">
		<property name="name" value="LAZY-LOW"/>
		<qualifier type="com.lq.interfaceimpl.Criteria">
			<attribute key="type" value="LAZY"/>
			<attribute key="rate" value="LOW"/>
		</qualifier>
	</bean>
	<bean id="hw2" class="com.lq.interfaceimpl.HardWorker">
		<property name="name" value="HARD-MEDIUM"/>
		<qualifier type="com.lq.interfaceimpl.Criteria">
			<attribute key="type" value="HARD"/>
			<attribute key="rate" value="MEDIUM"/>
		</qualifier>
	</bean>
	<bean id="lw2" class="com.lq.interfaceimpl.HardlyWorks">
		<property name="name" value="LAZY-MEDIUM"/>
		<qualifier type="com.lq.interfaceimpl.Criteria">
			<attribute key="type" value="LAZY"/>
			<attribute key="rate" value="MEDIUM"/>
		</qualifier>
	</bean>
</beans>

Criteria.java

package com.lq.interfaceimpl;

import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;

import org.springframework.beans.factory.annotation.Qualifier;

@Retention(RetentionPolicy.RUNTIME)
@Qualifier
public @interface Criteria {
	WorkerType type();
	PayRate rate();
	enum WorkerType{HARD,LAZY}
	enum PayRate{LOW,MEDIUM,HIGH}
}

InterfaceImplTest.java

package com.lq.interfaceimpl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.stereotype.Component;

import com.lq.interfaceimpl.Criteria.PayRate;
import com.lq.interfaceimpl.Criteria.WorkerType;

public class InterfaceImplTest {
	public static void main(String[] args) {
		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
				"annotated-injection.xml");
		Task task = (Task) context.getBean("task");
		task.execute();
		SpecialTask specialTask = (SpecialTask) context.getBean("specialTask");
		specialTask.execute();
		

	}
}

interface Worker {
	void doWork();
	String getName();
	void setName(String name);
}

@Component
class HardlyWorks implements Worker {

	private String name="Colleen";

	@Override
	public void doWork() {
		System.out.println(name+" HARDLY WORKS");
	}

	@Override
	public String getName() {
		return this.name;
	}

	@Override
	public void setName(String name) {
		this.name = name;
	}

}
@Component
class HardWorker implements Worker {

	private String name = "Sarah";

	@Override
	public void doWork() {
		System.out.println(name+" WORKS VERY HARD");
	}

	@Override
	public String getName() {
		return this.name;
	}

	@Override
	public void setName(String name) {
		this.name = name;
	}

}
@Component
class Task {
	@Autowired
	@Qualifier("hardWorker")
	private Worker worker;
	public void execute(){
		worker.doWork();
	}
}
@Component
 class SpecialTask {
	@Autowired
	@Criteria(rate=PayRate.LOW,type=WorkerType.HARD)
	private Worker worker;
	public void execute(){
		worker.doWork();
	}
}