Method pass1Store

src/dsql/StmtNodes.cpp:7891–8002

Process a source for a store statement. This can get a little tricky if the relation is a view.

// Process a source for a store statement. This can get a little tricky if the relation is a view.
bool StoreNode::pass1Store(thread_db* tdbb, CompilerScratch* csb, StoreNode* node)
{
	// If updateable views with triggers are involved, there may be a recursive call to be ignored.

	if (node->subStore)
		return false;

	auto relSource = nodeAs<RelationSourceNode>(node->target);

	if (!relSource)	// Is this a LocalTableSourceNode?
	{
		const StreamType stream = node->target->getStream();
		const auto tail = &csb->csb_rpt[stream];
		tail->csb_flags |= csb_store;

		// Apply validation constraints.
		makeValidation(tdbb, csb, stream, node->validations);

		return false;
	}

	jrd_rel* parent = NULL;
	jrd_rel* view = NULL;
	StreamType parentStream;

	// To support nested views, loop until we hit a table or a view with user-defined triggers
	// (which means no update).

	for (;;)
	{
		const StreamType stream = node->target->getStream();

		CompilerScratch::csb_repeat* const tail = &csb->csb_rpt[stream];
		tail->csb_flags |= csb_store;

		jrd_rel* const relation = tail->csb_relation;
		view = relation->rel_view_rse ? relation : view;

		if (!parent)
		{
			parent = tail->csb_view;
			parentStream = tail->csb_view_stream;
		}

		postTriggerAccess(csb, relation, ExternalAccess::exa_insert, view);

		RefPtr<TrigVector> trigger(relation->rel_pre_store ?
			relation->rel_pre_store : relation->rel_post_store);

		// Check out insert. If this is an insert thru a view, verify the view by checking for read
		// access on the base table. If field-level select privileges are implemented, this needs
		// to be enhanced.

		SecurityClass::flags_t priv = SCL_insert;

		if (parent)
			priv |= SCL_select;