RLMCollection_Private.hpp
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////////////////////////////////////////////////////////////////////////////
//
// Copyright 2016 Realm Inc.
//
// 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 <Realm/RLMCollection_Private.h>
#import <realm/object-store/collection_notifications.hpp>
#import <vector>
#import <mutex>
namespace realm {
class List;
class Obj;
class Results;
class TableView;
struct CollectionChangeSet;
struct ColKey;
namespace object_store {
class Collection;
class Dictionary;
class Set;
}
}
class RLMClassInfo;
@class RLMFastEnumerator, RLMManagedArray, RLMManagedSet, RLMManagedDictionary, RLMProperty, RLMObjectBase;
@protocol RLMFastEnumerable
@property (nonatomic, readonly) RLMRealm *realm;
@property (nonatomic, readonly) RLMClassInfo *objectInfo;
@property (nonatomic, readonly) NSUInteger count;
- (realm::TableView)tableView;
- (RLMFastEnumerator *)fastEnumerator;
@end
// An object which encapsulates the shared logic for fast-enumerating RLMArray
// RLMSet and RLMResults, and has a buffer to store strong references to the current
// set of enumerated items
@interface RLMFastEnumerator : NSObject
- (instancetype)initWithBackingCollection:(realm::object_store::Collection const&)backingCollection
collection:(id)collection
classInfo:(RLMClassInfo&)info;
- (instancetype)initWithBackingDictionary:(realm::object_store::Dictionary const&)backingDictionary
dictionary:(RLMManagedDictionary *)dictionary
classInfo:(RLMClassInfo&)info;
- (instancetype)initWithResults:(realm::Results&)results
collection:(id)collection
classInfo:(RLMClassInfo&)info;
// Detach this enumerator from the source collection. Must be called before the
// source collection is changed.
- (void)detach;
- (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state
count:(NSUInteger)len;
@end
NSUInteger RLMFastEnumerate(NSFastEnumerationState *state, NSUInteger len, id<RLMFastEnumerable> collection);
@interface RLMNotificationToken ()
- (void)suppressNextNotification;
- (RLMRealm *)realm;
@end
@interface RLMCollectionChange ()
- (instancetype)initWithChanges:(realm::CollectionChangeSet)indices;
@end
@interface RLMCancellationToken : RLMNotificationToken {
@public
__unsafe_unretained RLMRealm *_realm;
realm::NotificationToken _token;
std::mutex _mutex;
}
@end
realm::object_store::Set& RLMGetBackingCollection(RLMManagedSet *);
realm::object_store::Dictionary& RLMGetBackingCollection(RLMManagedDictionary *);
realm::List& RLMGetBackingCollection(RLMManagedArray *);
realm::Results& RLMGetBackingCollection(RLMResults *);
template<typename RLMCollection>
RLMNotificationToken *RLMAddNotificationBlock(RLMCollection *collection,
void (^block)(id, RLMCollectionChange *, NSError *),
NSArray<NSString *> *keyPaths,
dispatch_queue_t queue);
template<typename Collection>
NSArray *RLMCollectionValueForKey(Collection& collection, NSString *key, RLMClassInfo& info);
std::vector<std::pair<std::string, bool>> RLMSortDescriptorsToKeypathArray(NSArray<RLMSortDescriptor *> *properties);
realm::ColKey columnForProperty(NSString *propertyName,
realm::object_store::Collection const& backingCollection,
RLMClassInfo *objectInfo,
RLMPropertyType propertyType,
RLMCollectionType collectionType);
static inline bool canAggregate(RLMPropertyType type, bool allowDate) {
switch (type) {
case RLMPropertyTypeInt:
case RLMPropertyTypeFloat:
case RLMPropertyTypeDouble:
case RLMPropertyTypeDecimal128:
case RLMPropertyTypeAny:
return true;
case RLMPropertyTypeDate:
return allowDate;
default:
return false;
}
}