Method reallocate

src/QueryPlan/PlanSymbolReallocator.cpp:45–59

}

PlanNodeAndMappings PlanSymbolReallocator::reallocate(const PlanNodePtr & plan, ContextMutablePtr & context)
{
    Names origin_outputs = plan->getOutputNames();

    SymbolReallocatorVisitor visitor{
        context, [&](auto & mapping) { return SymbolMapper::symbolReallocator(mapping, *context->getSymbolAllocator()); }};
    Void c;
    auto [plan_node, mappings] = VisitorUtil::accept(plan, visitor, c);
    auto symbol_mapper = SymbolMapper::symbolMapper(mappings);

    NameToNameMap output_symbol_mappings;
    for (const auto & output : origin_outputs)
        output_symbol_mappings.emplace(output, symbol_mapper.map(output));
    return {plan_node, output_symbol_mappings};
}

bool PlanSymbolReallocator::isOverlapping(const DataStream & lho, const DataStream & rho)
{