Class AbstractFallbackCacheOperationSource

All Implemented Interfaces:
Direct Known Subclasses:

public abstract class AbstractFallbackCacheOperationSource extends Object implements CacheOperationSource
Abstract implementation of CacheOperation that caches attributes for methods and implements a fallback policy: 1. specific target method; 2. target class; 3. declaring method; 4. declaring class/interface.

Defaults to using the target class's caching attribute if none is associated with the target method. Any caching attribute associated with the target method completely overrides a class caching attribute. If none found on the target class, the interface that the invoked method has been called through (in case of a JDK proxy) will be checked.

This implementation caches attributes by method after they are first used. If it is ever desirable to allow dynamic changing of cacheable attributes (which is very unlikely), caching could be made configurable.

Costin Leau, Juergen Hoeller
  • Field Details

    • logger

      protected final Log logger
      Logger available to subclasses.

      As this base class is not marked Serializable, the logger will be recreated after serialization - provided that the concrete subclass is Serializable.

  • Constructor Details

    • AbstractFallbackCacheOperationSource

      public AbstractFallbackCacheOperationSource()
  • Method Details

    • getCacheOperations

      @Nullable public Collection<CacheOperation> getCacheOperations(Method method, @Nullable Class<?> targetClass)
      Determine the caching attribute for this method invocation.

      Defaults to the class's caching attribute if no method attribute is found.

      Specified by:
      getCacheOperations in interface CacheOperationSource
      method - the method for the current invocation (never null)
      targetClass - the target class for this invocation (may be null)
      CacheOperation for this method, or null if the method is not cacheable
    • getCacheKey

      protected Object getCacheKey(Method method, @Nullable Class<?> targetClass)
      Determine a cache key for the given method and target class.

      Must not produce same key for overloaded methods. Must produce same key for different instances of the same method.

      method - the method (never null)
      targetClass - the target class (may be null)
      the cache key (never null)
    • findCacheOperations

      @Nullable protected abstract Collection<CacheOperation> findCacheOperations(Class<?> clazz)
      Subclasses need to implement this to return the caching attribute for the given class, if any.
      clazz - the class to retrieve the attribute for
      all caching attribute associated with this class, or null if none
    • findCacheOperations

      @Nullable protected abstract Collection<CacheOperation> findCacheOperations(Method method)
      Subclasses need to implement this to return the caching attribute for the given method, if any.
      method - the method to retrieve the attribute for
      all caching attribute associated with this method, or null if none
    • allowPublicMethodsOnly

      protected boolean allowPublicMethodsOnly()
      Should only public methods be allowed to have caching semantics?

      The default implementation returns false.