Examples with Debugger com.apple.foundationdb.record.query.plan.temp.debug.Debugger used on opensource projects

Example 1 with Debugger

use of com.apple.foundationdb.record.query.plan.temp.debug.Debugger in project fdb-record-layer by FoundationDB.

the class PlannerGraphProperty method evaluateAtRef.

@Nonnull
@Override
public PlannerGraph evaluateAtRef(@Nonnull final ExpressionRef<? extends RelationalExpression> ref, @Nonnull List<PlannerGraph> memberResults) {
    if (memberResults.isEmpty()) {
        // should not happen -- but we don't want to bail
        return PlannerGraph.builder(new PlannerGraph.ExpressionRefHeadNode(ref)).build();
    }
    if (removePlansIfPossible()) {
        final List<PlannerGraph> filteredMemberResults = memberResults.stream().filter(graph -> graph.getRoot() instanceof PlannerGraph.WithExpression).filter(graph -> {
            final RelationalExpression expression = ((PlannerGraph.WithExpression) graph.getRoot()).getExpression();
            return !(expression instanceof RecordQueryPlan);
        }).collect(Collectors.toList());
        // if we filtered down to empty it is better to just show the physical plan, otherwise try to avoid it
        if (!filteredMemberResults.isEmpty()) {
            memberResults = filteredMemberResults;
        }
    } else if (removeLogicalExpressions()) {
        final List<PlannerGraph> filteredMemberResults = memberResults.stream().filter(graph -> graph.getRoot() instanceof PlannerGraph.WithExpression).filter(graph -> ((PlannerGraph.WithExpression) graph.getRoot()).getExpression() instanceof RecordQueryPlan).collect(Collectors.toList());
        // if we filtered down to empty it is better to just show the physical plan, otherwise try to avoid it
        if (!filteredMemberResults.isEmpty()) {
            memberResults = filteredMemberResults;
        }
    }
    if (renderSingleGroups() || memberResults.size() > 1) {
        final Node head = new PlannerGraph.ExpressionRefHeadNode(ref);
        final PlannerGraph.InternalPlannerGraphBuilder plannerGraphBuilder = PlannerGraph.builder(head);
        final List<PlannerGraph> memberGraphs = memberResults.stream().map(childGraph -> {
            final Node root = childGraph.getRoot();
            final Optional<String> debugNameOptional = Debugger.mapDebugger(debugger -> {
                if (root instanceof PlannerGraph.WithExpression) {
                    final PlannerGraph.WithExpression withExpression = (PlannerGraph.WithExpression) root;
                    @Nullable final RelationalExpression expression = withExpression.getExpression();
                    return expression == null ? null : debugger.nameForObject(expression);
                }
                return null;
            });
            final Node member = debugNameOptional.map(PlannerGraph.ExpressionRefMemberNode::new).orElse(new PlannerGraph.ExpressionRefMemberNode());
            return PlannerGraph.builder(member).addGraph(childGraph).addEdge(root, member, new PlannerGraph.GroupExpressionRefEdge()).build();
        }).collect(Collectors.toList());
        memberGraphs.forEach(memberGraph -> {
            plannerGraphBuilder.addGraph(memberGraph);
            plannerGraphBuilder.addEdge(memberGraph.getRoot(), head, new PlannerGraph.GroupExpressionRefInternalEdge());
        });
        return plannerGraphBuilder.build();
    } else {
        // !renderSingleGroups && memberResults.size() == 1
        return Iterables.getOnlyElement(memberResults);
    }
}