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/*
* 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 "Firestore/Source/Local/FSTWriteGroup.h"
#include <leveldb/write_batch.h>
#import "Firestore/Source/Local/FSTLevelDBKey.h"
#import "Firestore/Source/Util/FSTAssert.h"
using firebase::firestore::local::LevelDbTransaction;
using Firestore::StringView;
using leveldb::DB;
using leveldb::Slice;
using leveldb::Status;
using leveldb::WriteBatch;
using leveldb::WriteOptions;
NS_ASSUME_NONNULL_BEGIN
@interface FSTWriteGroup ()
- (instancetype)initWithAction:(NSString *)action NS_DESIGNATED_INITIALIZER;
- (instancetype)initWithAction:(NSString *)action transaction:(LevelDbTransaction *)transaction;
@end
@implementation FSTWriteGroup {
int _changes;
}
+ (instancetype)groupWithAction:(NSString *)action {
return [[FSTWriteGroup alloc] initWithAction:action];
}
+ (instancetype)groupWithAction:(NSString *)action
transaction:(firebase::firestore::local::LevelDbTransaction *)transaction {
return [[FSTWriteGroup alloc] initWithAction:action transaction:transaction];
}
- (instancetype)initWithAction:(NSString *)action {
if (self = [super init]) {
_action = action;
_transaction = nullptr;
}
return self;
}
- (instancetype)initWithAction:(NSString *)action transaction:(LevelDbTransaction *)transaction {
if (self = [self initWithAction:action]) {
_transaction = transaction;
}
return self;
}
- (void)removeMessageForKey:(StringView)key {
FSTAssert(_transaction != nullptr, @"Using group without a transaction");
Slice keySlice = key;
_transaction->Delete(keySlice.ToString());
_changes += 1;
}
- (void)setMessage:(GPBMessage *)message forKey:(StringView)key {
FSTAssert(_transaction != nullptr, @"Using group without a transaction");
Slice keySlice = key;
_transaction->Put(keySlice.ToString(), message);
_changes += 1;
}
- (void)setData:(StringView)data forKey:(StringView)key {
FSTAssert(_transaction != nullptr, @"Using group without a transaction");
Slice keySlice = key;
Slice valueSlice = data;
std::string value = valueSlice.ToString();
_transaction->Put(keySlice.ToString(), value);
_changes += 1;
}
- (BOOL)isEmpty {
return _changes == 0;
}
@end
NS_ASSUME_NONNULL_END
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