memcached test not behaving as expected

Question

I'm implementing https://code.google.com/p/simple-spring-memcached/ and when I run below code I receive this output :

Adding to cache
Adding to cache

Code which tests memcached :

import java.util.ArrayList;
import java.util.List;

import junit.framework.Assert;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.google.code.ssm.CacheFactory;
import com.google.code.ssm.api.ParameterValueKeyProvider;
import com.google.code.ssm.api.ReadThroughSingleCache;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:memcached-context.xml" })
public class MemcachedTest {

    @Test
    public void testMemcached() {
        Assert.assertTrue(getComplexObjectFromDB("test").size() == 1);
        Assert.assertTrue(getComplexObjectFromDB("test").size() == 1);
    }

    private List<String> getSA(){

        List<String> l = new ArrayList<String>();
        System.out.println("Adding to cache");
        l.add("test");

        return l;
    }

    @ReadThroughSingleCache(namespace = "CplxObj", expiration = 3600)
    public List<String> getComplexObjectFromDB(@ParameterValueKeyProvider String id) {

        return getSA();
    }

    @Autowired
    private CacheFactory defaultMemcachedClient;

}

memcached-context.xml :

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:oxm="http://www.springframework.org/schema/oxm"
    xmlns:util="http://www.springframework.org/schema/util" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:ehcache="http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring"
    xsi:schemaLocation="
   http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd
   http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
   http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
   http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
   http://www.springframework.org/schema/oxm http://www.springframework.org/schema/oxm/spring-oxm-3.1.xsd
   http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring
   http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring/ehcache-spring-1.1.xsd
   http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

    <mvc:annotation-driven />

    <context:annotation-config />

<import resource="simplesm-context.xml" />
  <aop:aspectj-autoproxy />

    <bean name="defaultMemcachedClient" class="com.google.code.ssm.CacheFactory">
          <property name="cacheClientFactory">
                <bean class="com.google.code.ssm.providers.xmemcached.MemcacheClientFactoryImpl" />
          </property>
          <property name="addressProvider">
                <bean class="com.google.code.ssm.config.DefaultAddressProvider">
                     <property name="address" value="xx.xx.xx.xx:11211" />
                </bean>
          </property>
          <property name="configuration">
                <bean class="com.google.code.ssm.providers.CacheConfiguration">
                      <property name="consistentHashing" value="true" />
                </bean>
          </property>
     </bean>

</beans>

I expect to just receive output "Adding to cache" once as once the cache is added to the List should be returned and the List should not be re-instantiated ? Is my implementation correct ?

Update :

based on @raznor suggestion here this seems to behave as expected :

memcached-context.xml :

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:oxm="http://www.springframework.org/schema/oxm"
    xmlns:util="http://www.springframework.org/schema/util" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:ehcache="http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring"
    xsi:schemaLocation="
   http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd
   http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
   http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
   http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
   http://www.springframework.org/schema/oxm http://www.springframework.org/schema/oxm/spring-oxm-3.1.xsd
   http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring
   http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring/ehcache-spring-1.1.xsd
   http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

    <mvc:annotation-driven />

    <context:annotation-config />

<import resource="simplesm-context.xml" />
  <aop:aspectj-autoproxy />

    <bean name="memcachedClient" class="com.memcached.MemcachedClient">
     </bean>

    <bean name="defaultMemcachedClient" class="com.google.code.ssm.CacheFactory">
          <property name="cacheClientFactory">
                <bean class="com.google.code.ssm.providers.xmemcached.MemcacheClientFactoryImpl" />
          </property>
          <property name="addressProvider">
                <bean class="com.google.code.ssm.config.DefaultAddressProvider">
                     <property name="address" value="1.1.1.1:11211" />
                </bean>
          </property>
          <property name="configuration">
                <bean class="com.google.code.ssm.providers.CacheConfiguration">
                      <property name="consistentHashing" value="true" />
                </bean>
          </property>
     </bean>

</beans>

MemcachedTest.java :

import java.util.ArrayList;
import java.util.List;

import junit.framework.Assert;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.google.code.ssm.CacheFactory;
import com.google.code.ssm.api.ParameterValueKeyProvider;
import com.google.code.ssm.api.ReadThroughSingleCache;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:memcached-context.xml" })
public class MemcachedTest {

    @Test
    public void testMemcached() {

        Assert.assertTrue(mClient.getComplexObjectFromDB("test1").size() == 1);
        Assert.assertTrue(mClient.getComplexObjectFromDB("test1").size() == 1);
    }

    @Autowired
    private MemcachedClient mClient;

}

MemcachedClient.java :

package com.memcached;

import java.util.ArrayList;
import java.util.List;

import com.google.code.ssm.api.ParameterValueKeyProvider;
import com.google.code.ssm.api.ReadThroughSingleCache;

public class MemcachedClient {

    @ReadThroughSingleCache(namespace = "CplxObj", expiration = 3600)
    public List<String> getComplexObjectFromDB(
            @ParameterValueKeyProvider String id) {

        return getSA();
    }

    private List<String> getSA() {

        List<String> l = new ArrayList<String>();
        System.out.println("Adding to cache");
        l.add("test");

        return l;
    }

}

Answer 1

It doesn't work because self invocations are not intercepted. To make it work extract getComplexObjectFromDB method to separated Spring bean and call it in your test using this bean: myBean.getComplexObjectFromDB.