Examples with PlanNodeIdAllocator com.facebook.presto.sql.planner.PlanNodeIdAllocator used on opensource projects

Example 6 with PlanNodeIdAllocator

use of com.facebook.presto.sql.planner.PlanNodeIdAllocator in project presto by prestodb.

the class IterativeOptimizer method optimize.

@Override
public PlanNode optimize(PlanNode plan, Session session, Map<Symbol, Type> types, SymbolAllocator symbolAllocator, PlanNodeIdAllocator idAllocator) {
    if (!SystemSessionProperties.isNewOptimizerEnabled(session)) {
        for (PlanOptimizer optimizer : legacyRules) {
            plan = optimizer.optimize(plan, session, symbolAllocator.getTypes(), symbolAllocator, idAllocator);
        }
        return plan;
    }
    Memo memo = new Memo(idAllocator, plan);
    Lookup lookup = node -> {
        if (node instanceof GroupReference) {
            return memo.getNode(((GroupReference) node).getGroupId());
        }
        return node;
    };
    Duration timeout = SystemSessionProperties.getOptimizerTimeout(session);
    exploreGroup(memo.getRootGroup(), new Context(memo, lookup, idAllocator, symbolAllocator, System.nanoTime(), timeout.toMillis()));
    return memo.extract();
}