public abstract class AbstractFallbackCacheOperationSource extends java.lang.Object implements CacheOperationSource
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.
Modifier and Type | Field and Description |
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private java.util.Map<java.lang.Object,java.util.Collection<CacheOperation>> |
attributeCache
Cache of CacheOperations, keyed by method on a specific target class.
|
protected Log |
logger
Logger available to subclasses.
|
private static java.util.Collection<CacheOperation> |
NULL_CACHING_ATTRIBUTE
Canonical value held in cache to indicate no caching attribute was
found for this method and we don't need to look again.
|
Constructor and Description |
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AbstractFallbackCacheOperationSource() |
Modifier and Type | Method and Description |
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protected boolean |
allowPublicMethodsOnly()
Should only public methods be allowed to have caching semantics?
|
private java.util.Collection<CacheOperation> |
computeCacheOperations(java.lang.reflect.Method method,
java.lang.Class<?> targetClass) |
protected abstract java.util.Collection<CacheOperation> |
findCacheOperations(java.lang.Class<?> clazz)
Subclasses need to implement this to return the caching attribute
for the given class, if any.
|
protected abstract java.util.Collection<CacheOperation> |
findCacheOperations(java.lang.reflect.Method method)
Subclasses need to implement this to return the caching attribute
for the given method, if any.
|
protected java.lang.Object |
getCacheKey(java.lang.reflect.Method method,
java.lang.Class<?> targetClass)
Determine a cache key for the given method and target class.
|
java.util.Collection<CacheOperation> |
getCacheOperations(java.lang.reflect.Method method,
java.lang.Class<?> targetClass)
Determine the caching attribute for this method invocation.
|
private static final java.util.Collection<CacheOperation> NULL_CACHING_ATTRIBUTE
protected final Log logger
As this base class is not marked Serializable, the logger will be recreated after serialization - provided that the concrete subclass is Serializable.
private final java.util.Map<java.lang.Object,java.util.Collection<CacheOperation>> attributeCache
As this base class is not marked Serializable, the cache will be recreated after serialization - provided that the concrete subclass is Serializable.
public AbstractFallbackCacheOperationSource()
@Nullable public java.util.Collection<CacheOperation> getCacheOperations(java.lang.reflect.Method method, @Nullable java.lang.Class<?> targetClass)
Defaults to the class's caching attribute if no method attribute is found.
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 cacheableprotected java.lang.Object getCacheKey(java.lang.reflect.Method method, @Nullable java.lang.Class<?> targetClass)
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
)null
)@Nullable private java.util.Collection<CacheOperation> computeCacheOperations(java.lang.reflect.Method method, @Nullable java.lang.Class<?> targetClass)
@Nullable protected abstract java.util.Collection<CacheOperation> findCacheOperations(java.lang.reflect.Method method)
method
- the method to retrieve the attribute fornull
if none)@Nullable protected abstract java.util.Collection<CacheOperation> findCacheOperations(java.lang.Class<?> clazz)
clazz
- the class to retrieve the attribute fornull
if none)protected boolean allowPublicMethodsOnly()
The default implementation returns false
.