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// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
#ifndef DBWRAPPER_H
#define DBWRAPPER_H
#include <map>
#include <node.h>
#include "rocksdb/db.h"
#include "rocksdb/slice.h"
#include "rocksdb/options.h"
using namespace v8;
// Used to encapsulate a particular instance of an opened database.
//
// This object should not be used directly in C++; it exists solely to provide
// a mapping from a JavaScript object to a C++ code that can use the RocksDB
// API.
class DBWrapper : public node::ObjectWrap {
public:
static void Init(Handle<Object> exports);
private:
explicit DBWrapper();
~DBWrapper();
// Helper methods
static bool HasFamilyNamed(std::string& name, DBWrapper* db);
static bool AddToBatch(ROCKSDB_NAMESPACE::WriteBatch& batch, bool del,
Handle<Array> array);
static bool AddToBatch(ROCKSDB_NAMESPACE::WriteBatch& batch, bool del,
Handle<Array> array, DBWrapper* db_wrapper,
std::string cf);
static Handle<Value> CompactRangeDefault(const v8::Arguments& args);
static Handle<Value> CompactColumnFamily(const Arguments& args);
static Handle<Value> CompactOptions(const Arguments& args);
static Handle<Value> CompactAll(const Arguments& args);
// C++ mappings of API methods
static Persistent<v8::Function> constructor;
static Handle<Value> Open(const Arguments& args);
static Handle<Value> New(const Arguments& args);
static Handle<Value> Get(const Arguments& args);
static Handle<Value> Put(const Arguments& args);
static Handle<Value> Delete(const Arguments& args);
static Handle<Value> Dump(const Arguments& args);
static Handle<Value> WriteBatch(const Arguments& args);
static Handle<Value> CreateColumnFamily(const Arguments& args);
static Handle<Value> CompactRange(const Arguments& args);
static Handle<Value> Close(const Arguments& args);
// Internal fields
ROCKSDB_NAMESPACE::Options options_;
ROCKSDB_NAMESPACE::Status status_;
ROCKSDB_NAMESPACE::DB* db_;
std::unordered_map<std::string, ROCKSDB_NAMESPACE::ColumnFamilyHandle*>
columnFamilies_;
};
#endif
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