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////////////////////////////////////////////////////////////////////////////
//
// Copyright 2014 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 <Foundation/Foundation.h>
NS_ASSUME_NONNULL_BEGIN
@class RLMObjectSchema;
/**
`RLMSchema` instances represent collections of model object schemas managed by a Realm.
When using Realm, `RLMSchema` instances allow performing migrations and
introspecting the database's schema.
Schemas map to collections of tables in the core database.
*/
@interface RLMSchema : NSObject<NSCopying>
#pragma mark - Properties
/**
An `NSArray` containing `RLMObjectSchema`s for all object types in the Realm.
This property is intended to be used during migrations for dynamic introspection.
@see `RLMObjectSchema`
*/
@property (nonatomic, readonly, copy) NSArray<RLMObjectSchema *> *objectSchema;
#pragma mark - Methods
/**
Returns an `RLMObjectSchema` for the given class name in the schema.
@param className The object class name.
@return An `RLMObjectSchema` for the given class in the schema.
@see `RLMObjectSchema`
*/
- (nullable RLMObjectSchema *)schemaForClassName:(NSString *)className;
/**
Looks up and returns an `RLMObjectSchema` for the given class name in the Realm.
If there is no object of type `className` in the schema, an exception will be thrown.
@param className The object class name.
@return An `RLMObjectSchema` for the given class in this Realm.
@see `RLMObjectSchema`
*/
- (RLMObjectSchema *)objectForKeyedSubscript:(NSString *)className;
/**
Returns whether two `RLMSchema` instances are equivalent.
*/
- (BOOL)isEqualToSchema:(RLMSchema *)schema;
@end
NS_ASSUME_NONNULL_END
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