Как реализовать CacheLoader, чтобы читался ключ @Cacheable

При попытке реализовать собственный загрузчик кеша с помощью встроенного обновления. Этот загруженный кеш использует RefreshAheadCacheFactory

как описано в

http://terracotta.org/documentation/4.1/bigmemorymax/api/refresh-ahead#scheduled-refresh-ahead

&

http://www.ehcache.org/generated/2.9.0/html/ehc-all/#page/Ehcache_Documentation_Set%2Fco-dec_creating_a_decorator_2.html

Я получаю сообщение об ошибке при попытке добавить свой собственный ключ:

@Cacheable(key="myKey" , value = "myCache")

ошибка:

org.springframework.expression.spel.SpelEvaluationException: EL1008E:(pos 0): Field or property 'myKey' cannot be found on object of type 'org.springframework.cache.interceptor.CacheExpressionRootObject'
    at org.springframework.expression.spel.ast.PropertyOrFieldReference.readProperty(PropertyOrFieldReference.java:208)
    at org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:72)
    at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:93)
    at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:88)
    at org.springframework.cache.interceptor.ExpressionEvaluator.key(ExpressionEvaluator.java:80)
    at org.springframework.cache.interceptor.CacheAspectSupport$CacheOperationContext.generateKey(CacheAspectSupport.java:464)
    at org.springframework.cache.interceptor.CacheAspectSupport.inspectCacheables(CacheAspectSupport.java:291)
    at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:198)
    at org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:66)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)
    at ehcache.MyCache$$EnhancerByCGLIB$$4aeb3b9c.tester(<generated>)
    at ehcache.TestEhcache.testCache(TestEhcache.java:21)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

Как я могу добавить ключ «myKey» в кеш?

Я думаю, что неправильно настроил пользовательский загрузчик кеша. Как должен быть реализован метод loadAll. Вот моя реализация:

public Map loadAll(Collection keys, Object argument) {
    // TODO Auto-generated method stub

    return new HashMap<String , String>();
}

Должен ли этот HashMap содержать ключ «myKey»?

Когда я настраиваю этот метод:

public Map loadAll(Collection keys, Object argument) {
// TODO Auto-generated method stub
 Map map = new HashMap<String , String>();
 map.put("myKey", "test");

return map;

}

Я получаю ту же ошибку.

Весь код и конфигурация:

весна-ehcache.xml:

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

    <bean id="myCache" class="ehcache.MyCache"></bean>
</beans>

мой-ehcache.xml :

<?xml version="1.0" encoding="UTF-8"?>
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="http://ehcache.org/ehcache.xsd">
    <defaultCache eternal="true" maxElementsInMemory="100"
        overflowToDisk="false" />
    <cache name="myCache" maxElementsInMemory="10" eternal="true"
        overflowToDisk="false">

  <cacheLoaderFactory class="MyCacheLoaderFactory" properties="myKey" 
    />

        <cacheDecoratorFactory 
            class="net.sf.ehcache.constructs.refreshahead.RefreshAheadCacheFactory"
            properties="timeToRefreshSeconds=10,
      batchSize=5,
      numberOfThreads=4,
      maximumBacklogItems=5,
      evictOnLoadMiss=true" />

    </cache>
</ehcache>

package ehcache;

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;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:spring-ehcache.xml")
public class TestEhcache {

    @Test
    public void testCache(){

        while(true){


            long t1 = System.currentTimeMillis();

            System.out.println(myCache.tester());
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

            long t2 = System.currentTimeMillis();

            System.out.println("Exc time : "+(t2-t1));
        }
    }


    @Autowired
    private MyCache myCache;

}



package ehcache;

import org.springframework.cache.annotation.Cacheable;

public class MyCache {

    @Cacheable(key="myKey" , value = "myCache")
    public String tester() {

        System.out.println("in cache");
        ExpensiveOperation expensiveOperation = new ExpensiveOperation();
        String ret = expensiveOperation.doThis();

        return ret;
    }

}

package ehcache;

public class ExpensiveOperation {

    public String doThis() {

        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        return "test";
    }

}

import java.util.Properties;
import net.sf.ehcache.Ehcache;
import net.sf.ehcache.loader.CacheLoader;

public class MyCacheLoaderFactory extends
        net.sf.ehcache.loader.CacheLoaderFactory {

        @Override
        public CacheLoader createCacheLoader(Ehcache cache, Properties properties) {

            return new MyCacheLoader();

        }

    }

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import net.sf.ehcache.CacheException;
import net.sf.ehcache.Ehcache;
import net.sf.ehcache.Status;
import net.sf.ehcache.loader.CacheLoader;


public class MyCacheLoader implements CacheLoader {

    public Object load(Object key) throws CacheException {
        // TODO Auto-generated method stub
        return load(key, null);
    }

    public Map loadAll(Collection keys) {
        // TODO Auto-generated method stub

        System.out.println("in loadall");

        return loadAll(keys , null);
    }

    public Object load(Object key, Object argument) {

        System.out.println("in load");
        // TODO Auto-generated method stub
        return "my object";
    }

    public Map loadAll(Collection keys, Object argument) {
        // TODO Auto-generated method stub
         Map map = new HashMap<String , String>();
         map.put("myKey", "test");

        return map;
    }

    public String getName() {
        // TODO Auto-generated method stub
        return null;
    }

    public CacheLoader clone(Ehcache cache) throws CloneNotSupportedException {
        // TODO Auto-generated method stub
        return null;
    }

    public void init() {
        // TODO Auto-generated method stub

    }

    public void dispose() throws CacheException {
        // TODO Auto-generated method stub

    }

    public Status getStatus() {
        // TODO Auto-generated method stub
        return null;
    }

}