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#pragma once
#include <akonadi2common_export.h>
#include <string>
#include <functional>
#include <QString>
class AKONADI2COMMON_EXPORT Storage {
public:
enum AccessMode { ReadOnly, ReadWrite };
class Error
{
public:
Error(const std::string &s, int c, const std::string &m)
: store(s), message(m), code(c) {}
std::string store;
std::string message;
int code;
};
Storage(const QString &storageRoot, const QString &name, AccessMode mode = ReadOnly);
~Storage();
bool isInTransaction() const;
bool startTransaction(AccessMode mode = ReadWrite);
bool commitTransaction();
void abortTransaction();
//TODO: row removal
//TODO: cursor based read
//TODO: query?
bool write(const char *key, size_t keySize, const char *value, size_t valueSize);
bool write(const std::string &sKey, const std::string &sValue);
void read(const std::string &sKey,
const std::function<bool(const std::string &value)> &resultHandler);
void read(const std::string &sKey,
const std::function<bool(const std::string &value)> &resultHandler,
const std::function<void(const Storage::Error &error)> &errorHandler);
void read(const std::string &sKey, const std::function<bool(void *ptr, int size)> &resultHandler);
void read(const std::string &sKey,
const std::function<bool(void *ptr, int size)> & resultHandler,
const std::function<void(const Storage::Error &error)> &errorHandler);
void scan(const std::string &sKey, const std::function<bool(void *keyPtr, int keySize, void *valuePtr, int valueSize)> &resultHandler);
void scan(const char *keyData, uint keySize,
const std::function<bool(void *keyPtr, int keySize, void *ptr, int size)> &resultHandler,
const std::function<void(const Storage::Error &error)> &errorHandler);
static std::function<void(const Storage::Error &error)> basicErrorHandler();
qint64 diskUsage() const;
void removeFromDisk() const;
private:
class Private;
Private * const d;
};
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