Package com.facebook.presto.sql.planner.plan

Examples of com.facebook.presto.sql.planner.plan.WindowNode

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            if (context != null && canOptimizeWindowFunction(node, context)) {
                int limit = extractLimitOptional(node, context.getExpression()).get();
                if (node.getPartitionBy().isEmpty()) {
                    WindowContext windowContext = new WindowContext(Optional.of(node), new LongLiteral(String.valueOf(limit)));
                    PlanNode rewrittenSource = planRewriter.rewrite(node.getSource(), windowContext);
                    return new WindowNode(idAllocator.getNextId(),
                            rewrittenSource,
                            node.getPartitionBy(),
                            node.getOrderBy(),
                            node.getOrderings(),
                            node.getWindowFunctions(),
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        @Override
        public PlanNode rewriteTableScan(TableScanNode node, WindowContext context, PlanRewriter<WindowContext> planRewriter)
        {
            if (context != null && context.getExpression() instanceof LongLiteral && context.getWindowNode().isPresent()) {
                PlanNode rewrittenNode = planRewriter.rewrite(node, null);
                WindowNode windowNode = context.getWindowNode().get();
                if (windowNode.getOrderBy().isEmpty()) {
                    return new LimitNode(idAllocator.getNextId(), rewrittenNode, ((LongLiteral) context.getExpression()).getValue());
                }
                return new TopNNode(
                        idAllocator.getNextId(),
                        rewrittenNode,
                        ((LongLiteral) context.getExpression()).getValue(),
                        windowNode.getOrderBy(),
                        windowNode.getOrderings(),
                        false);
            }
            return planRewriter.defaultRewrite(node, null);
        }
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            ImmutableMap.Builder<Symbol, SortOrder> orderings = ImmutableMap.builder();
            for (Map.Entry<Symbol, SortOrder> entry : node.getOrderings().entrySet()) {
                orderings.put(canonicalize(entry.getKey()), entry.getValue());
            }

            return new WindowNode(node.getId(), source, canonicalize(node.getPartitionBy()), canonicalize(node.getOrderBy()), orderings.build(), functionCalls.build(), functionInfos.build());
        }
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                }
            }

            PlanNode source = planRewriter.rewrite(node.getSource(), expectedInputs.build());

            return new WindowNode(node.getId(), source, node.getPartitionBy(), node.getOrderBy(), node.getOrderings(), functionCalls.build(), functions.build());
        }
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                    current = createFixedDistributionPlan(source)
                            .addChild(current.build());
                }
            }

            current.setRoot(new WindowNode(node.getId(), current.getRoot(), node.getPartitionBy(), node.getOrderBy(), node.getOrderings(), node.getWindowFunctions(), node.getSignatures()));

            return current;
        }
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            List<Symbol> sourceSymbols = subPlan.getRoot().getOutputSymbols();

            // create window node
            subPlan = new PlanBuilder(outputTranslations,
                    new WindowNode(idAllocator.getNextId(), subPlan.getRoot(), partitionBySymbols.build(), orderBySymbols.build(), orderings, assignments.build(), signatures),
                    subPlan.getSampleWeight());

            if (needCoercion) {
                subPlan = explicitCoercionSymbols(subPlan, sourceSymbols, ImmutableList.of(windowFunction));
            }
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            ImmutableMap.Builder<Symbol, SortOrder> orderings = ImmutableMap.builder();
            for (Map.Entry<Symbol, SortOrder> entry : node.getOrderings().entrySet()) {
                orderings.put(canonicalize(entry.getKey()), entry.getValue());
            }

            return new WindowNode(node.getId(), source, canonicalize(node.getPartitionBy()), canonicalize(node.getOrderBy()), orderings.build(), functionCalls.build(), functionInfos.build());
        }
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    @Test
    public void testWindow()
            throws Exception
    {
        PlanNode node = new WindowNode(newId(),
                filter(baseTableScan,
                        and(
                                equals(AE, BE),
                                equals(BE, CE),
                                lessThan(CE, number(10)))),
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                    current = createFixedDistributionPlan(source)
                            .addChild(current.build());
                }
            }

            current.setRoot(new WindowNode(node.getId(), current.getRoot(), node.getPartitionBy(), node.getOrderBy(), node.getOrderings(), node.getWindowFunctions(), node.getSignatures()));

            return current;
        }
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            List<Symbol> sourceSymbols = subPlan.getRoot().getOutputSymbols();

            // create window node
            subPlan = new PlanBuilder(outputTranslations,
                    new WindowNode(idAllocator.getNextId(), subPlan.getRoot(), partitionBySymbols.build(), orderBySymbols.build(), orderings, assignments.build(), signatures));

            if (needCoercion) {
                subPlan = explicitCoercionSymbols(subPlan, sourceSymbols, ImmutableList.of(windowFunction));
            }
        }
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Related Classes of com.facebook.presto.sql.planner.plan.WindowNode

  • com.facebook.presto.sql.planner.DistributedLogicalPlanner$Visitor
  • com.facebook.presto.sql.planner.optimizations.PruneUnreferencedOutputs$Rewriter
  • com.facebook.presto.sql.planner.optimizations.UnaliasSymbolReferences$Rewriter
  • com.facebook.presto.sql.planner.optimizations.WindowFilterPushDown$Rewriter
  • com.facebook.presto.sql.planner.QueryPlanner
  • com.facebook.presto.sql.planner.TestEffectivePredicateExtractor
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