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/*
* Copyright (c) 2021, Jan de Visser <jan@de-visser.net>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Vector.h>
#include <LibSQL/Serializer.h>
#include <LibSQL/Type.h>
namespace SQL {
struct TupleElementDescriptor {
String schema { "" };
String table { "" };
String name { "" };
SQLType type { SQLType::Text };
Order order { Order::Ascending };
bool operator==(TupleElementDescriptor const&) const = default;
void serialize(Serializer& serializer) const
{
serializer.serialize(name);
serializer.serialize<u8>((u8)type);
serializer.serialize<u8>((u8)order);
}
void deserialize(Serializer& serializer)
{
name = serializer.deserialize<String>();
type = (SQLType)serializer.deserialize<u8>();
order = (Order)serializer.deserialize<u8>();
}
size_t length() const
{
return (sizeof(u32) + name.length()) + 2 * sizeof(u8);
}
String to_string() const
{
return String::formatted(" name: {} type: {} order: {}", name, SQLType_name(type), Order_name(order));
}
};
class TupleDescriptor
: public Vector<TupleElementDescriptor>
, public RefCounted<TupleDescriptor> {
public:
TupleDescriptor() = default;
~TupleDescriptor() = default;
[[nodiscard]] int compare_ignoring_names(TupleDescriptor const& other) const
{
if (size() != other.size())
return (int)size() - (int)other.size();
for (auto ix = 0u; ix < size(); ++ix) {
auto elem = (*this)[ix];
auto other_elem = other[ix];
if ((elem.type != other_elem.type) || (elem.order != other_elem.order)) {
return 1;
}
}
return 0;
}
void serialize(Serializer& serializer) const
{
serializer.serialize<u32>(size());
for (auto& element : *this) {
serializer.serialize<TupleElementDescriptor>(element);
}
}
void deserialize(Serializer& serializer)
{
auto sz = serializer.deserialize<u32>();
for (auto ix = 0u; ix < sz; ix++) {
append(serializer.deserialize<TupleElementDescriptor>());
}
}
size_t length() const
{
size_t len = sizeof(u32);
for (auto& element : *this) {
len += element.length();
}
return len;
}
String to_string() const
{
Vector<String> elements;
for (auto& element : *this) {
elements.append(element.to_string());
}
return String::formatted("[\n{}\n]", String::join("\n", elements));
}
using Vector<TupleElementDescriptor>::operator==;
};
}
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