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java.lang.Object org.apache.http.impl.client.cache.BasicHttpCacheStorage
@Contract(threading=SAFE) public class BasicHttpCacheStorage
Basic HttpCacheStorage
implementation backed by an instance of
LinkedHashMap
. In other words, cache entries and
the cached response bodies are held in-memory. This cache does NOT
deallocate resources associated with the cache entries; it is intended
for use with HeapResource
and similar. This is the default cache
storage backend used by CachingHttpClients
.
Constructor Summary | |
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BasicHttpCacheStorage(CacheConfig config)
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Method Summary | |
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HttpCacheEntry |
getEntry(String url)
Gets an entry from the cache, if it exists |
void |
putEntry(String url,
HttpCacheEntry entry)
Places a HttpCacheEntry in the cache |
void |
removeEntry(String url)
Removes a HttpCacheEntry from the cache |
void |
updateEntry(String url,
HttpCacheUpdateCallback callback)
Atomically applies the given callback to update an existing cache entry under a given key. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public BasicHttpCacheStorage(CacheConfig config)
Method Detail |
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public void putEntry(String url, HttpCacheEntry entry) throws IOException
putEntry
in interface HttpCacheStorage
url
- Url to use as the cache keyentry
- HttpCacheEntry to place in the cache
IOException
public HttpCacheEntry getEntry(String url) throws IOException
getEntry
in interface HttpCacheStorage
url
- Url that is the cache key
IOException
public void removeEntry(String url) throws IOException
removeEntry
in interface HttpCacheStorage
url
- Url that is the cache key
IOException
public void updateEntry(String url, HttpCacheUpdateCallback callback) throws IOException
HttpCacheStorage
updateEntry
in interface HttpCacheStorage
url
- indicates which entry to modifycallback
- performs the update; see
HttpCacheUpdateCallback
for details, but roughly the
callback expects to be handed the current entry and will return
the new value for the entry.
IOException
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