Function explainStep

src/QueryPlan/QueryPlan.cpp:368–401

static void explainStep(const IQueryPlanStep & step, JSONBuilder::JSONMap & map, const QueryPlan::ExplainPlanOptions & options)
{
    map.add("Node Type", step.getName());

    if (options.description)
    {
        const auto & description = step.getStepDescription();
        if (!description.empty())
            map.add("Description", description);
    }

    if (options.header && step.hasOutputStream())
    {
        auto header_array = std::make_unique<JSONBuilder::JSONArray>();

        for (const auto & output_column : step.getOutputStream().header)
        {
            auto column_map = std::make_unique<JSONBuilder::JSONMap>();
            column_map->add("Name", output_column.name);
            if (output_column.type)
                column_map->add("Type", output_column.type->getName());

            header_array->add(std::move(column_map));
        }

        map.add("Header", std::move(header_array));
    }

    if (options.actions)
        step.describeActions(map);

    if (options.indexes)
        step.describeIndexes(map);
}

JSONBuilder::ItemPtr QueryPlan::explainPlan(const ExplainPlanOptions & options)
{