Method createFormat

src/jrd/Routine.cpp:58–110

Create a Format based on an IMessageMetadata.

// Create a Format based on an IMessageMetadata.
Format* Routine::createFormat(MemoryPool& pool, IMessageMetadata* params, bool addEof)
{
	FbLocalStatus status;

	unsigned count = params->getCount(&status);
	status.check();

	Format* format = Format::newFormat(pool, count * 2 + (addEof ? 1 : 0));
	unsigned runOffset = 0;

	dsc* desc = format->fmt_desc.begin();

	for (unsigned i = 0; i < count; ++i)
	{
		unsigned descOffset, nullOffset, descDtype, descLength;

		unsigned type = params->getType(&status, i);
		status.check();
		unsigned len = params->getLength(&status, i);
		status.check();
		runOffset = fb_utils::sqlTypeToDsc(runOffset, type, len, &descDtype, &descLength,
			&descOffset, &nullOffset);

		desc->clear();
		desc->dsc_dtype = descDtype;
		desc->dsc_length = descLength;
		desc->dsc_scale = params->getScale(&status, i);
		status.check();
		desc->dsc_sub_type = params->getSubType(&status, i);
		status.check();
		desc->setTextType(params->getCharSet(&status, i));
		status.check();
		desc->dsc_address = (UCHAR*)(IPTR) descOffset;
		desc->dsc_flags = (params->isNullable(&status, i) ? DSC_nullable : 0);
		status.check();

		++desc;
		desc->makeShort(0, (SSHORT*)(IPTR) nullOffset);

		++desc;
	}

	if (addEof)
	{
		// Next item is aligned on USHORT, so as the previous one.
		desc->makeShort(0, (SSHORT*)(IPTR) runOffset);
		runOffset += sizeof(USHORT);
	}

	format->fmt_length = runOffset;

	return format;
}

void Routine::setStatement(Statement* value)
{