diff options
author | Paul Beusterien <paulbeusterien@google.com> | 2017-05-15 12:27:07 -0700 |
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committer | Paul Beusterien <paulbeusterien@google.com> | 2017-05-15 12:27:07 -0700 |
commit | 98ba64449a632518bd2b86fe8d927f4a960d3ddc (patch) | |
tree | 131d9c4272fa6179fcda6c5a33fcb3b1bd57ad2e /Firebase/Database/FIndex.h | |
parent | 32461366c9e204a527ca05e6e9b9404a2454ac51 (diff) |
Initial
Diffstat (limited to 'Firebase/Database/FIndex.h')
-rw-r--r-- | Firebase/Database/FIndex.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/Firebase/Database/FIndex.h b/Firebase/Database/FIndex.h new file mode 100644 index 0000000..8ab08c8 --- /dev/null +++ b/Firebase/Database/FIndex.h @@ -0,0 +1,50 @@ +/* + * 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> + +@class FImmutableSortedDictionary; +@class FNamedNode; +@protocol FNode; + +@protocol FIndex<NSObject, NSCopying> +- (NSComparisonResult) compareKey:(NSString *)key1 + andNode:(id<FNode>)node1 + toOtherKey:(NSString *)key2 + andNode:(id<FNode>)node2; + +- (NSComparisonResult) compareKey:(NSString *)key1 + andNode:(id<FNode>)node1 + toOtherKey:(NSString *)key2 + andNode:(id<FNode>)node2 + reverse:(BOOL)reverse; + +- (NSComparisonResult) compareNamedNode:(FNamedNode *)namedNode1 toNamedNode:(FNamedNode *)namedNode2; + +- (BOOL) isDefinedOn:(id<FNode>)node; +- (BOOL) indexedValueChangedBetween:(id<FNode>)oldNode and:(id<FNode>)newNode; +- (FNamedNode*) minPost; +- (FNamedNode*) maxPost; +- (FNamedNode*) makePost:(id<FNode>)indexValue name:(NSString*)name; +- (NSString*) queryDefinition; + +@end + +@interface FIndex : NSObject + ++ (id<FIndex>)indexFromQueryDefinition:(NSString *)string; + +@end |