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#include "pq-binarycolumn.h"
#include "column.h"
#include "dbTypes.h"
#include "pq-column.h"
#include <bit>
#include <cstdint>
#include <endian.h>
#include <error.h>
#include <server/catalog/pg_type_d.h>
PQ::BinaryColumn::BinaryColumn(const PQ::SelectBase * select, unsigned int field) : PQ::Column(select, field) { }
template<std::integral T>
inline T
PQ::BinaryColumn::valueAs() const
{
T outValue {};
std::memcpy(&outValue, value(), sizeof(T));
if constexpr (std::endian::native != std::endian::big && sizeof(T) > 1) {
return std::byteswap(outValue);
}
return outValue;
}
void
PQ::BinaryColumn::apply(DB::HandleField & handler) const
{
if (isNull()) {
handler.null();
return;
}
switch (oid) {
case CHAROID:
case VARCHAROID:
case TEXTOID:
case XMLOID:
handler.string({value(), length()});
break;
case BOOLOID:
handler.boolean(valueAs<bool>());
break;
case INT2OID:
handler.integer(valueAs<int16_t>());
break;
case INT4OID:
handler.integer(valueAs<int32_t>());
break;
case INT8OID:
handler.integer(valueAs<int64_t>());
break;
case BYTEAOID:
handler.blob(DB::Blob(value(), length()));
break;
default:
throw DB::ColumnTypeNotSupported();
}
}
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