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#ifndef DB_TYPES_H
#define DB_TYPES_H
#include <visibility.h>
#include <cstdlib>
#include <vector>
namespace DB {
/// Wrapper class for reference an existing block of binary data.
class DLL_PUBLIC Blob {
public:
/// Construct a default blob pointing to no data.
Blob() = default;
/// Construct a reference using C-style pointer and length.
Blob(const void * data, size_t len);
/// Construct a reference using C++ template pointer to an object.
template<typename T>
explicit Blob(const T * t) :
data(t),
len(sizeof(T))
{
}
/// Construct a reference using C++ vector pointer to a collection of objects.
template<typename T>
explicit Blob(const std::vector<T> & v) :
data(&v.front()),
len(sizeof(T) * v.size())
{
}
/// Byte-wise equality operation.
bool operator==(const DB::Blob b) const;
/// The beginning of the binary data.
const void * data { nullptr };
/// The length of the binary data.
size_t len { 0 };
};
}
#endif
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