1 files changed, 53 insertions, 0 deletions
diff --git a/Firebase/Database/Core/View/FView.h b/Firebase/Database/Core/View/FView.h
new file mode 100644
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+++ b/Firebase/Database/Core/View/FView.h
@@ -0,0 +1,53 @@
+/*
+ * 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>
+
+@protocol FNode;
+@protocol FOperation;
+@protocol FEventRegistration;
+@class FWriteTreeRef;
+@class FQuerySpec;
+@class FChange;
+@class FPath;
+@class FViewCache;
+
+@interface FViewOperationResult : NSObject
+
+@property (nonatomic, strong, readonly) NSArray* changes;
+@property (nonatomic, strong, readonly) NSArray* events;
+
+@end
+
+
+@interface FView : NSObject
+
+@property (nonatomic, strong, readonly) FQuerySpec *query;
+
+- (id) initWithQuery:(FQuerySpec *)query initialViewCache:(FViewCache *)initialViewCache;
+
+- (id<FNode>) eventCache;
+- (id<FNode>) serverCache;
+- (id<FNode>) completeServerCacheFor:(FPath*)path;
+- (BOOL) isEmpty;
+
+- (void) addEventRegistration:(id<FEventRegistration>)eventRegistration;
+- (NSArray *) removeEventRegistration:(id<FEventRegistration>)eventRegistration cancelError:(NSError *)cancelError;
+
+- (FViewOperationResult *) applyOperation:(id <FOperation>)operation writesCache:(FWriteTreeRef *)writesCache serverCache:(id <FNode>)optCompleteServerCache;
+- (NSArray *) initialEvents:(id<FEventRegistration>)registration;
+
+@end