Files
firebase-ios-sdk/Firestore/Source/Local/FSTReferenceSet.h
T
Greg Soltis 16a5210b3c Merging the LRU branch (#1600)
* Switch to reference delegates for garbage collection (#1410)

* Bump sequence number on resume token refresh

* Style

* Fix comment formatting

* Add FSTReferenceDelegate definition and documentation

* Add methods to return nil for delegates, wire up inMemoryPins

* Add hook for removing a reference

* Start work on reference delegates

* Fix up tests to support adding documents at a sequence number

* Implement removing references

* Remove from target when dropped from local view

* Fix warning

* Add hooks for removal from mutation queue

* Add hooks for limbo document updates

* Style

* Drop commented-out code

* Fixup after merging master

* Start importing delegate implementations

* Memory LRU tests pass

* Make memory lru work, start fixing up lru tests. All with hidden sequence numbers

* Most LRU tests passing w/ memory

* Big LRU test passes w/ memory

* Leveldb LRU tests pass

* All passing except local store tests

* All tests pass

* Fix localstore tests

* Revert removeQueryData change

* Remove collectGarbage calls

* Remove NoOp GC

* More cleanup

* Refactor FSTHelpers

* Cleanup and commenting

* Comments and cleanup

* Comments

* Drop nullable for reference delegates, and old persistence method on spec tests

* Fix missing sequence bump, remove unneeded targetID

* Style

* Drop commented-out code

* Satisfy the linters and copyrighters, etc.

* Drop more commented-out code

* Fix import -> include, NSUInteger -> int

* Start work on test comments

* FSTDocumentKey -> DocumentKey

* Sample of LRU test refactor (#1424)

* Sample of test refactor

* Drop errant 'struct' keyword

* More test refactoring

* Make gc a member variable too

* Tests refactored to use member variables

* Assign delegates procedurally, rather than passing in a block

* Fix up FSTLevelDB a little

* listens -> listenTargets

* Rename GCEnabled

* remove isSentinel

* reword comment

* Add case for non-eager GC to test

* Style

* Cleaning the lint trap

* Clean up LRU tests (#1433)

* Add copious helpers and some docs to lru tests

* Style

* Method name refactor, add comment

* Drop FSTGarbageCollector and FSTEagerGarbageCollector (#1440)

* Drop FSTGarbageCollector and FSTEagerGarbageCollector

* Drop unused containsKey from FSTLevelDBMutationQueue

* Style

* Include sequence number in FSTQueryData hash and isEqual (#1568)

* Include sequence number in FSTQueryData hash and isEqual methods

* Style

* Switch to util::Hash

* Fix preserving query cache metadata (#1569)

* Add failing test

* Move the restart tests to the leveldb test suite

* Style

* Add new persistence test helper

* Fix test failure

* Review feedback

* Style
2018-07-27 13:58:11 -07:00

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Objective-C

/*
* Copyright 2017 Google
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#import <Foundation/Foundation.h>
#import "Firestore/Source/Core/FSTTypes.h"
#include "Firestore/core/src/firebase/firestore/model/document_key_set.h"
NS_ASSUME_NONNULL_BEGIN
/**
* A collection of references to a document from some kind of numbered entity (either a targetID or
* batchID). As references are added to or removed from the set corresponding events are emitted to
* a registered garbage collector.
*
* Each reference is represented by a FSTDocumentReference object. Each of them contains enough
* information to uniquely identify the reference. They are all stored primarily in a set sorted
* by key. A document is considered garbage if there's no references in that set (this can be
* efficiently checked thanks to sorting by key).
*
* FSTReferenceSet also keeps a secondary set that contains references sorted by IDs. This one is
* used to efficiently implement removal of all references by some target ID.
*/
@interface FSTReferenceSet : NSObject
/** Returns YES if the reference set contains no references. */
- (BOOL)isEmpty;
/** Adds a reference to the given document key for the given ID. */
- (void)addReferenceToKey:(const firebase::firestore::model::DocumentKey &)key forID:(int)ID;
/** Add references to the given document keys for the given ID. */
- (void)addReferencesToKeys:(const firebase::firestore::model::DocumentKeySet &)keys forID:(int)ID;
/** Removes a reference to the given document key for the given ID. */
- (void)removeReferenceToKey:(const firebase::firestore::model::DocumentKey &)key forID:(int)ID;
/** Removes references to the given document keys for the given ID. */
- (void)removeReferencesToKeys:(const firebase::firestore::model::DocumentKeySet &)keys
forID:(int)ID;
/** Clears all references with a given ID. Calls -removeReferenceToKey: for each key removed. */
- (void)removeReferencesForID:(int)ID;
/** Clears all references for all IDs. */
- (void)removeAllReferences;
/** Returns all of the document keys that have had references added for the given ID. */
- (firebase::firestore::model::DocumentKeySet)referencedKeysForID:(int)ID;
/**
* Checks to see if there are any references to a document with the given key.
*/
- (BOOL)containsKey:(const firebase::firestore::model::DocumentKey &)key;
@end
NS_ASSUME_NONNULL_END