13

I tried some new Spring features and I found out that @CachePut and @CacheEvict annotations has no effect. May be I do something wrong. Could you help me?

My applicationContext.xml.

<cache:annotation-driven />

<!--also tried this-->
<!--<ehcache:annotation-driven />-->

<bean id="cacheManager" 
        class="org.springframework.cache.ehcache.EhCacheCacheManager"
        p:cache-manager-ref="ehcache"/>
<bean id="ehcache"
        class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"
        p:config-location="classpath:ehcache.xml"/>

This part works well.

@Cacheable(value = "finders")
public Finder getFinder(String code)
{
    return getFinderFromDB(code);
}

@CacheEvict(value = "finders", allEntries = true)
public void clearCache()
{
}

But if I want remove single value from cache or override it I can't do that. What I tested:

@CacheEvict(value = "finders", key = "#finder.code")
public boolean updateFinder(Finder finder, boolean nullValuesAllowed)
{
    // ...
}

/////////////

@CacheEvict(value = "finders")
public void clearCache(String code)
{
}

/////////////

@CachePut(value = "finders", key = "#finder.code")
public Finder updateFinder(Finder finder, boolean nullValuesAllowed)
{
    // gets newFinder that is different
    return newFinder;
}
Gosha U.
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1 Answers1

18

I found the reason why it didn't work. I called this methods from other method in the same class. So this calls didn't get through Proxy object therefore the annotations didn't work.

Correct example:

@Service
@Transactional
public class MyClass {

    @CachePut(value = "finders", key = "#finder.code")
    public Finder updateFinder(Finder finder, boolean nullValuesAllowed)
    {
        // gets newFinder
        return newFinder;
    }
}

and

@Component
public class SomeOtherClass {

    @Autowired
    private MyClass myClass;

    public void updateFinderTest() {
        Finder finderWithNewName = new Finder();
        finderWithNewName.setCode("abc");
        finderWithNewName.setName("123");
        myClass.updateFinder(finderWithNewName, false);
    }
}
Gosha U.
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  • had the same issue and this fixed it. Thanks! But what's the specific problem to have '@CachePut' and '@Cachable' in the same Class? – DOUBL3P Aug 09 '17 at 14:14
  • @DOUBL3P There is no problem, except for the annotations work through a hidden proxy object, inherited from the class. If you call a method directly (bypassing the proxy), you don't get the proxy functionality. But you may get your bean, wrapped by proxy, from applicationContext (getBean). Then, it will work. – Gosha U. Mar 25 '18 at 08:46