mirror of
https://github.com/firebase/firebase-ios-sdk
synced 2026-11-10 22:45:59 +05:45
65 lines
2.0 KiB
Objective-C
65 lines
2.0 KiB
Objective-C
/*
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* Copyright 2017 Google
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#import "FKeepSyncedEventRegistration.h"
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@interface FKeepSyncedEventRegistration ()
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@end
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@implementation FKeepSyncedEventRegistration
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+ (FKeepSyncedEventRegistration *)instance {
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static dispatch_once_t onceToken;
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static FKeepSyncedEventRegistration *keepSynced;
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dispatch_once(&onceToken, ^{
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keepSynced = [[FKeepSyncedEventRegistration alloc] init];
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});
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return keepSynced;
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}
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- (BOOL) responseTo:(FIRDataEventType)eventType {
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return NO;
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}
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- (FDataEvent *) createEventFrom:(FChange *)change query:(FQuerySpec *)query {
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[NSException raise:NSInternalInconsistencyException format:@"Should never create event for FKeepSyncedEventRegistration"];
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return nil;
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}
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- (void) fireEvent:(id<FEvent>)event queue:(dispatch_queue_t)queue {
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[NSException raise:NSInternalInconsistencyException format:@"Should never raise event for FKeepSyncedEventRegistration"];
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}
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- (FCancelEvent *) createCancelEventFromError:(NSError *)error path:(FPath *)path {
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// Don't create cancel events....
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return nil;
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}
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- (FIRDatabaseHandle) handle {
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// TODO[offline]: returning arbitray, can't return NSNotFound since that is used to match other event registrations
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// We should really redo this to match on different kind of events (single observer, all observers, cancelled)
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// rather than on a NSNotFound handle...
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return NSNotFound - 1;
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}
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- (BOOL) matches:(id<FEventRegistration>)other {
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// Only matches singleton instance
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return self == other;
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}
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@end
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