package org.springframework.cache.jcache.interceptor;
import java.util.Collection;
import java.util.Collections;
import javax.cache.annotation.CacheInvocationContext;
import org.springframework.cache.Cache;
import org.springframework.cache.interceptor.CacheOperationInvocationContext;
import org.springframework.cache.interceptor.CacheResolver;
import org.springframework.cache.jcache.JCacheCache;
import org.springframework.util.Assert;
/**
* Spring's {@link CacheResolver} implementation that delegates to a standard
* JSR-107 {@link javax.cache.annotation.CacheResolver}.
* <p>Used internally to invoke user-based JSR-107 cache resolvers.
*
* @author Stephane Nicoll
* @since 4.1
*/
class CacheResolverAdapter implements CacheResolver {
private final javax.cache.annotation.CacheResolver target;
/**
* Create a new instance with the JSR-107 cache resolver to invoke.
*/
public CacheResolverAdapter(javax.cache.annotation.CacheResolver target) {
Assert.notNull(target, "JSR-107 cache resolver must be set.");
this.target = target;
}
/**
* Return the underlying {@link javax.cache.annotation.CacheResolver} that this
* instance is using.
*/
protected javax.cache.annotation.CacheResolver getTarget() {
return target;
}
@Override
public Collection<? extends Cache> resolveCaches(CacheOperationInvocationContext<?> context) {
if (!(context instanceof CacheInvocationContext<?>)) {
throw new IllegalStateException("Unexpected context " + context);
}
CacheInvocationContext<?> cacheInvocationContext = (CacheInvocationContext<?>) context;
javax.cache.Cache<Object, Object> cache = target.resolveCache(cacheInvocationContext);
Assert.notNull(cache, "Cannot resolve cache for '" + context + "' using '" + target + "'");
return Collections.singleton(new JCacheCache(cache));
}
}