Method planSingleQuery

src/planner/plan/plan_single_query.cpp:13–27

Note: we cannot append ResultCollector for plans enumerated for single query before there could be a UNION on top which requires further flatten. So we delay ResultCollector appending to enumerate regular query level.

// be a UNION on top which requires further flatten. So we delay ResultCollector appending to
// enumerate regular query level.
LogicalPlan Planner::planSingleQuery(const NormalizedSingleQuery& singleQuery) {
    auto propertyCollector = PropertyCollector();
    propertyCollector.visitSingleQuery(singleQuery);
    auto properties = propertyCollector.getProperties();
    for (auto& expr : propertyCollector.getProperties()) {
        auto& property = expr->constCast<PropertyExpression>();
        propertyExprCollection.addProperties(property.getVariableName(), expr);
    }
    context.resetState();
    auto plan = LogicalPlan();
    for (auto i = 0u; i < singleQuery.getNumQueryParts(); ++i) {
        planQueryPart(*singleQuery.getQueryPart(i), plan);
    }
    return plan;
}

void Planner::planQueryPart(const NormalizedQueryPart& queryPart, LogicalPlan& plan) {
    // plan read