fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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64 lines
2.0 KiB
64 lines
2.0 KiB
// Copyright (c) 2015, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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#pragma once
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#ifndef ROCKSDB_LITE
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#include <string>
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#include <vector>
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#include "rocksdb/comparator.h"
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#include "rocksdb/db.h"
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#include "rocksdb/utilities/optimistic_transaction.h"
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namespace rocksdb {
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class OptimisticTransaction;
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// Database with Transaction support.
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//
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// See optimistic_transaction.h and examples/transaction_example.cc
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class OptimisticTransactionDB {
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public:
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// Open an OptimisticTransactionDB similar to DB::Open().
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static Status Open(const Options& options, const std::string& dbname,
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OptimisticTransactionDB** dbptr);
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static Status Open(const DBOptions& db_options, const std::string& dbname,
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const std::vector<ColumnFamilyDescriptor>& column_families,
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std::vector<ColumnFamilyHandle*>* handles,
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OptimisticTransactionDB** dbptr);
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virtual ~OptimisticTransactionDB() {}
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// Starts a new OptimisticTransaction. Passing set_snapshot=true has the same
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// effect
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// as calling SetSnapshot().
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//
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// Caller should delete the returned transaction after calling
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// Commit() or Rollback().
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virtual OptimisticTransaction* BeginTransaction(
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const WriteOptions& write_options,
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const OptimisticTransactionOptions&
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txn_options = OptimisticTransactionOptions()) = 0;
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// Return the underlying Database that was opened
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virtual DB* GetBaseDB() = 0;
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protected:
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// To Create an OptimisticTransactionDB, call Open()
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explicit OptimisticTransactionDB(DB* db) {}
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OptimisticTransactionDB() {}
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private:
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// No copying allowed
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OptimisticTransactionDB(const OptimisticTransactionDB&);
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void operator=(const OptimisticTransactionDB&);
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};
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} // namespace rocksdb
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#endif // ROCKSDB_LITE
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