Function IDX_modify

src/jrd/idx.cpp:1254–1355

void IDX_modify(thread_db* tdbb,
				record_param* org_rpb,
				record_param* new_rpb,
				jrd_tra* transaction)
{
/**************************************
 *
 *	I D X _ m o d i f y
 *
 **************************************
 *
 * Functional description
 *	Update the various indices after a MODIFY operation.  If a duplicate
 *	index is violated, return the index number.  If successful, return
 *	-1.
 *
 **************************************/
	SET_TDBB(tdbb);

	index_desc idx;
	idx.idx_id = idx_invalid;

	index_insertion insertion;
	insertion.iib_relation = org_rpb->rpb_relation;
	insertion.iib_number = org_rpb->rpb_number;
	insertion.iib_descriptor = &idx;
	insertion.iib_transaction = transaction;
	insertion.iib_btr_level = 0;

	RelationPages* relPages = org_rpb->rpb_relation->getPages(tdbb);
	WIN window(relPages->rel_pg_space_id, -1);

	new_rpb->rpb_runtime_flags &= ~RPB_uk_updated;

	while (BTR_next_index(tdbb, org_rpb->rpb_relation, transaction, &idx, &window))
	{
		IndexErrorContext context(new_rpb->rpb_relation, &idx);
		idx_e error_code = idx_e_ok;

		{
			IndexCondition condition(tdbb, &idx);
			const auto checkResult = condition.check(new_rpb->rpb_record, &error_code);

			if (error_code)
			{
				CCH_RELEASE(tdbb, &window);
				context.raise(tdbb, error_code, new_rpb->rpb_record);
			}

			fb_assert(checkResult.isAssigned());
			if (!checkResult.value)
				continue;
		}

		AutoIndexExpression expression;
		IndexKey newKey(tdbb, new_rpb->rpb_relation, &idx, expression), orgKey(newKey);

		if ( (error_code = newKey.compose(new_rpb->rpb_record)) )