Examples of org.springframework.cache.concurrent.ConcurrentMapCache$NullHolder

Package org.springframework.cache.concurrent

Examples of org.springframework.cache.concurrent.ConcurrentMapCache$NullHolder

org.springframework.cache.concurrent.ConcurrentMapCache
Simple {@link Cache} implementation based on the core JDK{@code java.util.concurrent} package.
Useful for testing or simple caching scenarios, typically in combination with {@link org.springframework.cache.support.SimpleCacheManager} ordynamically through {@link ConcurrentMapCacheManager}.
Note: As {@link ConcurrentHashMap} (the default implementation used)does not allow for {@code null} values to be stored, this class will replacethem with a predefined internal object. This behavior can be changed through the {@link #ConcurrentMapCache(String,ConcurrentMap,boolean)} constructor. @author Costin Leau @author Juergen Hoeller @since 3.1

    assertEquals("123", target.get(key, String.class));
  }


  @Test
  public void putIfAbsent() { // no transactional support for putIfAbsent
    Cache target = new ConcurrentMapCache("testCache");
    Cache cache = new TransactionAwareCacheDecorator(target);


    Object key = new Object();
    assertNull(cache.putIfAbsent(key, "123"));
    assertEquals("123", target.get(key, String.class));
    assertEquals("123", cache.putIfAbsent(key, "456").get());
    assertEquals("123", target.get(key, String.class)); // unchanged
  }

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    assertEquals("123", target.get(key, String.class)); // unchanged
  }


  @Test
  public void evictNonTransactional() {
    Cache target = new ConcurrentMapCache("testCache");
    Cache cache = new TransactionAwareCacheDecorator(target);
    Object key = new Object();
    cache.put(key, "123");


    cache.evict(key);
    assertNull(target.get(key));
  }

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    assertNull(target.get(key));
  }


  @Test
  public void evictTransactional() {
    Cache target = new ConcurrentMapCache("testCache");
    Cache cache = new TransactionAwareCacheDecorator(target);
    Object key = new Object();
    cache.put(key, "123");




    TransactionStatus status = txManager.getTransaction(new DefaultTransactionAttribute(
        TransactionDefinition.PROPAGATION_REQUIRED));
    cache.evict(key);
    assertEquals("123", target.get(key, String.class));
    txManager.commit(status);


    assertNull(target.get(key));
  }

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  @Bean
  public CacheManager cacheManager() {
    SimpleCacheManager cacheManager = new SimpleCacheManager();


    cacheManager.setCaches(
            ImmutableList.of(new ConcurrentMapCache(USERS_CACHE))
    );


    return cacheManager;
  }

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    }


    @Bean
    public CacheManager cacheManager() throws Exception {
        SimpleCacheManager scm = new SimpleCacheManager();
        Cache cache = new ConcurrentMapCache("customers");
        scm.setCaches(Arrays.asList(cache));
        return scm;
    }

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class CachingConfiguration {


  @Bean
  public CacheManager cacheManager() {


    Cache cache = new ConcurrentMapCache("byUsername");


    SimpleCacheManager manager = new SimpleCacheManager();
    manager.setCaches(Arrays.asList(cache));


    return manager;

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