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WHFeedCache.h
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WHFeedCache.h
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/*
* This project constitutes a work of the United States Government and is
* not subject to domestic copyright protection under 17 USC § 105.
*
* However, because the project utilizes code licensed from contributors
* and other third parties, it therefore is licensed under the MIT
* License. http://opensource.org/licenses/mit-license.php. Under that
* license, permission is granted free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the conditions that any appropriate copyright notices and this
* permission notice are included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
//
// WHFeedCache.h
// WhiteHouseApp
//
//
#import <Foundation/Foundation.h>
#import "WHFeed.h"
#import "WHFeedItem.h"
#import "sqlite3.h"
/**
* This is a simple data persistence scheme for our feeds. Items are stored
* with their feed URL, GUID, and published date. The rest of the feed data is
* stored as a simple serialized object.
*/
@interface WHFeedCache : NSObject {
/**
* The database handle, used for all operations
*/
sqlite3 *_db;
dispatch_queue_t _queue;
}
/**
* Shared instance of feed cache
*/
+ (WHFeedCache *)sharedCache;
/**
* Return all feed items for the given URL (blocking)
*/
- (NSSet *)cachedItemsForURL:(NSURL *)feedURL;
- (NSSet *)favoritedItemsForURL:(NSURL *)feedURL;
/**
* Save a single feed item (non-blocking)
*/
- (void)saveFeedItem:(WHFeedItem *)item;
@end