/**
* Validates the specified {@link CacheOperation}.
*
* <p>Throws an {@link IllegalStateException} if the state of the operation is invalid. As there
* might be multiple sources for default values, this ensure that the operation is in a proper
* state before being returned.
*
* @param ae the annotated element of the cache operation
* @param operation the {@link CacheOperation} to validate
*/
private void validateCacheOperation(AnnotatedElement ae, CacheOperation operation) {
if (StringUtils.hasText(operation.getKey())
&& StringUtils.hasText(operation.getKeyGenerator())) {
throw new IllegalStateException(
"Invalid cache annotation configuration on '"
+ ae.toString()
+ "'. Both 'key' and 'keyGenerator' attributes have been set. "
+ "These attributes are mutually exclusive: either set the SpEL expression used to"
+ "compute the key at runtime or set the name of the KeyGenerator bean to use.");
}
if (StringUtils.hasText(operation.getCacheManager())
&& StringUtils.hasText(operation.getCacheResolver())) {
throw new IllegalStateException(
"Invalid cache annotation configuration on '"
+ ae.toString()
+ "'. Both 'cacheManager' and 'cacheResolver' attributes have been set. "
+ "These attributes are mutually exclusive: the cache manager is used to configure a"
+ "default cache resolver if none is set. If a cache resolver is set, the cache manager"
+ "won't be used.");
}
}
protected Collection<Cache> getCaches(CacheOperation operation) {
Set<String> cacheNames = operation.getCacheNames();
Collection<Cache> caches = new ArrayList<Cache>(cacheNames.size());
for (String name : cacheNames) {
Cache cache = getCacheManager().getCache(name);
if (cache == null) {
throw new IllegalArgumentException(
"Cannot find cache named [" + name + "] for " + operation);
}
caches.add(cache);
}
return caches;
}
/**
* Apply the defaults to the specified {@link CacheOperation}.
*
* @param operation the operation to update
*/
public void applyDefault(CacheOperation operation) {
if (operation.getCacheNames().isEmpty() && this.cacheNames != null) {
operation.setCacheNames(this.cacheNames);
}
if (!StringUtils.hasText(operation.getKey())
&& !StringUtils.hasText(operation.getKeyGenerator())
&& StringUtils.hasText(this.keyGenerator)) {
operation.setKeyGenerator(this.keyGenerator);
}
if (StringUtils.hasText(operation.getCacheManager())
|| StringUtils.hasText(operation.getCacheResolver())) {
// One of these is set so we should not inherit anything
} else if (StringUtils.hasText(this.cacheResolver)) {
operation.setCacheResolver(this.cacheResolver);
} else if (StringUtils.hasText(this.cacheManager)) {
operation.setCacheManager(this.cacheManager);
}
}