string valueToString(IAttachment* attachment, ITransaction* transaction,
MessageImpl& message, Offset<void*>& field)
{
if (message.isNull(field))
return "";
void* p = message[field];
switch (field.getType())
{
//// TODO: scale for SQL_SHORT, SQL_LONG and SQL_INT64
case SQL_SHORT:
return lexical_cast<string>(*static_cast<ISC_SHORT*>(p));
case SQL_LONG:
return lexical_cast<string>(*static_cast<ISC_LONG*>(p));
case SQL_INT64:
return lexical_cast<string>(*static_cast<ISC_INT64*>(p));
case SQL_FLOAT:
return lexical_cast<string>(*static_cast<float*>(p));
case SQL_DOUBLE:
return lexical_cast<string>(*static_cast<double*>(p));
case SQL_BLOB:
{
IStatus* status = master->getStatus();
IBlob* blob = attachment->openBlob(status, transaction,
static_cast<ISC_QUAD*>(p), 0, NULL);
BOOST_VERIFY(status->isSuccess());
string str;
char blobBuffer[1024];
unsigned blobLen;
while ((blobLen = blob->getSegment(status, sizeof(blobBuffer), blobBuffer)) != 0)
str.append(blobBuffer, blobLen);
blob->close(status);
BOOST_VERIFY(status->isSuccess());
status->dispose();
return str;
}
case SQL_TEXT:
case SQL_VARYING:
return string(static_cast<char*>(p) + sizeof(ISC_USHORT),
*static_cast<ISC_USHORT*>(p));
default:
BOOST_VERIFY(false);
return "";
}
}
void getEngineVersion(Firebird::IAttachment* attachment, unsigned* major, unsigned* minor,
unsigned* revision)
{
static const UCHAR ITEMS[] = {isc_info_firebird_version};
UCHAR buffer[512];
IStatus* status = master->getStatus();
attachment->getInfo(status, sizeof(ITEMS), ITEMS, sizeof(buffer), buffer);
BOOST_VERIFY(status->isSuccess());
if (buffer[0] == isc_info_firebird_version)
{
const UCHAR* p = buffer + 5;
if (major)
*major = p[4] - '0';
if (minor)
*minor = p[6] - '0';
if (revision)
*revision = p[8] - '0';
}
else
{
if (major)
*major = 0;
if (minor)
*minor = 0;
if (revision)
*revision = 0;
}
status->dispose();
}