Function MAKE_field

src/dsql/make.cpp:377–423

MAKE_field @brief Make up a field node. @param context @param field @param indices **/

 **/
FieldNode* MAKE_field(dsql_ctx* context, dsql_fld* field, ValueListNode* indices)
{
	DEV_BLKCHK(context, dsql_type_ctx);
	DEV_BLKCHK(field, dsql_type_fld);

	thread_db* const tdbb = JRD_get_thread_data();
	FieldNode* const node = FB_NEW_POOL(*tdbb->getDefaultPool()) FieldNode(
		*tdbb->getDefaultPool(), context, field, indices);

	dsc desc;

	if (field->dimensions)
	{
		if (indices)
			DsqlDescMaker::fromElement(&desc, field);
		else
		{
			desc = node->getDsqlDesc();
			desc.dsc_dtype = dtype_array;
			desc.dsc_length = sizeof(ISC_QUAD);
			desc.dsc_scale = static_cast<SCHAR>(field->scale);
			desc.dsc_sub_type = field->subType;
		}

		node->setDsqlDesc(desc);
	}
	else
	{
		if (indices)
		{
			ERRD_post(Arg::Gds(isc_sqlerr) << Arg::Num(-607) <<
					  Arg::Gds(isc_dsql_only_can_subscript_array) << Arg::Str(field->fld_name));
		}

		DsqlDescMaker::fromField(&desc, field);
		node->setDsqlDesc(desc);
	}

	if ((field->flags & FLD_nullable) || (context->ctx_flags & CTX_outer_join))
	{
		desc = node->getDsqlDesc();
		desc.dsc_flags |= DSC_nullable;
		node->setDsqlDesc(desc);
	}

	return node;
}


/**