package com.atlassian.cache.ehcache.wrapper;
   
   import com.atlassian.cache.CacheLoader;
   import net.sf.ehcache.CacheException;
   
   import javax.annotation.Nonnull;
   
   /**
    * Decorates the loader of {@link com.atlassian.cache.ehcache.LoadingCache}.
   * We make sure that during the loading operation, wrapped key does not leak to the end user.
   */
  public class ValueProcessorAtlassianCacheLoaderDecorator implements CacheLoader<Object, Object> {
  
      private final CacheLoader delegate;
      private final ValueProcessor valueProcessor;
  
      public ValueProcessorAtlassianCacheLoaderDecorator(final CacheLoader delegate, final ValueProcessor valueProcessor) {
          this.delegate = delegate;
          this.valueProcessor = valueProcessor;
      }
  
      @SuppressWarnings("unchecked")
      @Override
      @Nonnull
      public Object load(@Nonnull final Object key) throws CacheException {
          return valueProcessor.wrap(delegate.load(valueProcessor.unwrap(key)));
      }
  }