package org.springframework.cache.jcache.support;
   
   import java.lang.annotation.Annotation;
   import javax.cache.annotation.CacheKeyGenerator;
   import javax.cache.annotation.CacheKeyInvocationContext;
   import javax.cache.annotation.GeneratedCacheKey;
   
   import org.springframework.cache.interceptor.SimpleKey;
   
  /**
   * A simple test key generator that only takes the first key arguments into
   * account. To be used with a multi parameters key to validate it has been
   * used properly.
   *
   * @author Stephane Nicoll
   */
  public class TestableCacheKeyGenerator implements CacheKeyGenerator {
  
  	@Override
  	public GeneratedCacheKey generateCacheKey(CacheKeyInvocationContext<? extends Annotation> context) {
  		return new SimpleGeneratedCacheKey(context.getKeyParameters()[0]);
  	}
  
  
  	@SuppressWarnings("serial")
  	private static class SimpleGeneratedCacheKey extends SimpleKey implements GeneratedCacheKey {
  
  		public SimpleGeneratedCacheKey(Object... elements) {
  			super(elements);
  		}
  
  	}
  
  }