Method makeTrigger

src/jrd/ExtEngineManager.cpp:1607–1703

void ExtEngineManager::makeTrigger(thread_db* tdbb, CompilerScratch* csb, Jrd::Trigger* trg,
	const MetaName& engine, const string& entryPoint, const string& body,
	unsigned type)
{
	string entryPointTrimmed = entryPoint;
	entryPointTrimmed.trim();

	EngineAttachmentInfo* attInfo = getEngineAttachment(tdbb, engine);
	const MetaString& userName = trg->ssDefiner.specified && trg->ssDefiner.value ? trg->owner.c_str() : "";
	ContextManager<IExternalTrigger> ctxManager(tdbb, attInfo, attInfo->adminCharSet,
		CallerName(obj_trigger, trg->name, userName));

	MemoryPool& pool = *tdbb->getAttachment()->att_pool;

	AutoPtr<RoutineMetadata> metadata(FB_NEW_POOL(pool) RoutineMetadata(pool));
	metadata->name = trg->name;
	metadata->entryPoint = entryPointTrimmed;
	metadata->body = body;
	metadata->triggerType = type;

	jrd_rel* relation = trg->relation;

	if (relation)
	{
		metadata->triggerTable = relation->rel_name;

		MsgMetadata* fieldsMsg = FB_NEW MsgMetadata;
		metadata->triggerFields = fieldsMsg;

		Format* relFormat = relation->rel_current_format;

		for (FB_SIZE_T i = 0; i < relation->rel_fields->count(); ++i)
		{
			jrd_fld* field = (*relation->rel_fields)[i];
			if (field)
			{
				dsc d(relFormat->fmt_desc[i]);
				fieldsMsg->addItem(field->fld_name, !field->fld_not_null, d);
			}
		}
	}

	FbLocalStatus status;

	RefPtr<IMetadataBuilder> fieldsBuilder(REF_NO_INCR, relation ?
		metadata->triggerFields->getBuilder(&status) : NULL);
	if (relation)
	{
		status.check();
	}

	IExternalTrigger* externalTrigger;

	{	// scope
		EngineCheckout cout(tdbb, FB_FUNCTION, checkoutType(attInfo->engine));

		FbLocalStatus status;
		externalTrigger = attInfo->engine->makeTrigger(&status, attInfo->context, metadata,