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/// \file store/exceptions.hpp
/// Exception types raised by the store module.

#if !defined(STORE_EXCEPTIONS_HPP)
#define STORE_EXCEPTIONS_HPP

#include <stdexcept>

namespace store {


/// Base exception for store errors.
class error : public std::runtime_error {
public:
    explicit error(const std::string&);
    virtual ~error(void) throw();
};


/// The data in the database is inconsistent.
class integrity_error : public error {
public:
    explicit integrity_error(const std::string&);
    virtual ~integrity_error(void) throw();
};


/// The database schema is old and needs a migration.
class old_schema_error : public error {
    /// Version in the database that caused this error.
    int _old_version;

public:
    explicit old_schema_error(const int);
    virtual ~old_schema_error(void) throw();

    int old_version(void) const;
};


}  // namespace store


#endif  // !defined(STORE_EXCEPTIONS_HPP)