mirror of https://gitee.com/bigwinds/arangodb
277 lines
9.6 KiB
C++
277 lines
9.6 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2018 ArangoDB GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Heiko Kernbach
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////////////////////////////////////////////////////////////////////////////////
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#include "BlockFetcherHelper.h"
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#include "catch.hpp"
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#include "Aql/AqlItemBlock.h"
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#include "Aql/AqlItemBlockShell.h"
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#include "Aql/ExecutorInfos.h"
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#include "Aql/InputAqlItemRow.h"
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#include "Aql/LimitExecutor.h"
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#include "Aql/ResourceUsage.h"
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#include "Aql/SingleRowFetcher.h"
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#include <velocypack/Builder.h>
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#include <velocypack/velocypack-aliases.h>
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using namespace arangodb;
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using namespace arangodb::aql;
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namespace arangodb {
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namespace tests {
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namespace aql {
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SCENARIO("LimitExecutor", "[AQL][EXECUTOR][LIMITEXECUTOR]") {
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ExecutionState state;
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ResourceMonitor monitor;
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AqlItemBlockManager itemBlockManager(&monitor);
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auto block = std::make_unique<AqlItemBlock>(&monitor, 1000, 1);
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auto outputRegisters = std::make_shared<const std::unordered_set<RegisterId>>(
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std::initializer_list<RegisterId>{});
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auto registersToKeep = std::make_shared<const std::unordered_set<RegisterId>>(
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std::initializer_list<RegisterId>{0});
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auto blockShell =
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std::make_shared<AqlItemBlockShell>(itemBlockManager, std::move(block));
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// Special parameters:
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// 4th offset
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// 5th limit
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// 6th fullCount
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// 7th queryDepth
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GIVEN("there are no rows upstream") {
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LimitExecutorInfos infos(1, 1, {}, {0}, 0, 1, true);
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VPackBuilder input;
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WHEN("the producer does not wait") {
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SingleRowFetcherHelper<false> fetcher(input.steal(), false);
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LimitExecutor testee(fetcher, infos);
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LimitStats stats{};
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THEN("the executor should return DONE with nullptr") {
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OutputAqlItemRow result{std::move(blockShell), outputRegisters,
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registersToKeep, infos.registersToClear()};
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std::tie(state, stats) = testee.produceRow(result);
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REQUIRE(state == ExecutionState::DONE);
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REQUIRE(!result.produced());
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REQUIRE(stats.getFullCount() == 0);
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}
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}
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WHEN("the producer waits") {
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SingleRowFetcherHelper<false> fetcher(input.steal(), true);
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LimitExecutor testee(fetcher, infos);
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LimitStats stats{};
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THEN("the executor should first return WAIT") {
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OutputAqlItemRow result{std::move(blockShell), outputRegisters,
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registersToKeep, infos.registersToClear()};
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std::tie(state, stats) = testee.produceRow(result);
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REQUIRE(state == ExecutionState::WAITING);
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REQUIRE(!result.produced());
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REQUIRE(stats.getFullCount() == 0);
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AND_THEN("the executor should return DONE") {
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std::tie(state, stats) = testee.produceRow(result);
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REQUIRE(state == ExecutionState::DONE);
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REQUIRE(!result.produced());
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REQUIRE(stats.getFullCount() == 0);
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}
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}
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}
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}
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GIVEN("there are rows in the upstream, no filter or offset defined") {
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WHEN("the producer does not wait: limit 1, offset 0, fullcount false") {
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auto input = VPackParser::fromJson("[ [1], [2], [3], [4] ]");
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LimitExecutorInfos infos(1, 1, {}, {0}, 0, 1, false);
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SingleRowFetcherHelper<false> fetcher(input->steal(), false);
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LimitExecutor testee(fetcher, infos);
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LimitStats stats{};
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THEN("the executor should return one row") {
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OutputAqlItemRow row{std::move(blockShell), outputRegisters,
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registersToKeep, infos.registersToClear()};
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std::tie(state, stats) = testee.produceRow(row);
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REQUIRE(row.produced());
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row.advanceRow();
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AND_THEN("The output should stay stable") {
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std::tie(state, stats) = testee.produceRow(row);
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REQUIRE(state == ExecutionState::DONE);
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REQUIRE(!row.produced());
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}
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}
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}
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WHEN("the producer does not wait: limit 1, offset 0, fullcount true") {
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auto input = VPackParser::fromJson("[ [1], [2], [3], [4] ]");
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LimitExecutorInfos infos(1, 1, {}, {0}, 0, 1, true);
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SingleRowFetcherHelper<false> fetcher(input->steal(), false);
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LimitExecutor testee(fetcher, infos);
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LimitStats stats{};
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THEN("the executor should return one row") {
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OutputAqlItemRow row{std::move(blockShell), outputRegisters,
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registersToKeep, infos.registersToClear()};
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std::tie(state, stats) = testee.produceRow(row);
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REQUIRE(state == ExecutionState::HASMORE);
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REQUIRE(row.produced());
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row.advanceRow();
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AND_THEN("The output should stay stable") {
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std::tie(state, stats) = testee.produceRow(row);
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REQUIRE(!row.produced());
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REQUIRE(state == ExecutionState::DONE);
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REQUIRE(stats.getFullCount() == 3);
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}
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auto block = row.stealBlock();
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AqlValue value = block->getValue(0, 0);
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REQUIRE(value.isNumber());
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REQUIRE(value.toInt64() == 1);
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}
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}
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WHEN("the producer does not wait: limit 1, offset 1, fullcount true") {
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auto input = VPackParser::fromJson("[ [1], [2], [3], [4] ]");
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LimitExecutorInfos infos(1, 1, {}, {0}, 1, 1, true);
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SingleRowFetcherHelper<false> fetcher(input->steal(), false);
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LimitExecutor testee(fetcher, infos);
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LimitStats stats{};
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THEN("the executor should return one row") {
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OutputAqlItemRow row{std::move(blockShell), outputRegisters,
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registersToKeep, infos.registersToClear()};
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std::tie(state, stats) = testee.produceRow(row);
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REQUIRE(state == ExecutionState::HASMORE);
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REQUIRE(row.produced());
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row.advanceRow();
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AND_THEN("The output should stay stable") {
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std::tie(state, stats) = testee.produceRow(row);
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REQUIRE(!row.produced());
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REQUIRE(state == ExecutionState::DONE);
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REQUIRE(stats.getFullCount() == 2);
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}
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auto block = row.stealBlock();
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AqlValue value = block->getValue(0, 0);
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REQUIRE(value.isNumber());
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REQUIRE(value.toInt64() == 2);
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}
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}
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WHEN("the producer does wait: limit 1, offset 0, fullcount false") {
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auto input = VPackParser::fromJson("[ [1], [2], [3], [4] ]");
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LimitExecutorInfos infos(1, 1, {}, {0}, 0, 1, false);
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SingleRowFetcherHelper<false> fetcher(input->steal(), true);
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LimitExecutor testee(fetcher, infos);
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LimitStats stats{};
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THEN("the executor should return one row") {
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OutputAqlItemRow row{std::move(blockShell), outputRegisters,
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registersToKeep, infos.registersToClear()};
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std::tie(state, stats) = testee.produceRow(row);
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REQUIRE(state == ExecutionState::WAITING);
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REQUIRE(!row.produced());
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std::tie(state, stats) = testee.produceRow(row);
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REQUIRE(state == ExecutionState::DONE);
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REQUIRE(row.produced());
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row.advanceRow();
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AND_THEN("The output should stay stable") {
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std::tie(state, stats) = testee.produceRow(row);
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REQUIRE(state == ExecutionState::DONE);
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REQUIRE(!row.produced());
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}
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auto block = row.stealBlock();
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AqlValue value = block->getValue(0, 0);
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REQUIRE(value.isNumber());
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REQUIRE(value.toInt64() == 1);
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}
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}
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WHEN("the producer does wait: limit 1, offset 0, fullcount true") {
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auto input = VPackParser::fromJson("[ [1], [2], [3], [4] ]");
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LimitExecutorInfos infos(1, 1, {}, {0}, 0, 1, true);
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SingleRowFetcherHelper<false> fetcher(input->steal(), true);
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LimitExecutor testee(fetcher, infos);
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LimitStats stats{};
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THEN("the executor should return one row") {
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OutputAqlItemRow row{std::move(blockShell), outputRegisters,
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registersToKeep, infos.registersToClear()};
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std::tie(state, stats) = testee.produceRow(row);
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REQUIRE(state == ExecutionState::WAITING);
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REQUIRE(!row.produced());
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std::tie(state, stats) = testee.produceRow(row);
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REQUIRE(state == ExecutionState::HASMORE);
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REQUIRE(row.produced());
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row.advanceRow();
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std::tie(state, stats) = testee.produceRow(row);
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REQUIRE(state == ExecutionState::WAITING);
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REQUIRE(!row.produced());
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std::tie(state, stats) = testee.produceRow(row);
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REQUIRE(state == ExecutionState::WAITING);
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REQUIRE(!row.produced());
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std::tie(state, stats) = testee.produceRow(row);
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REQUIRE(state == ExecutionState::WAITING);
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REQUIRE(!row.produced());
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AND_THEN("The output should stay stable") {
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std::tie(state, stats) = testee.produceRow(row);
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REQUIRE(state == ExecutionState::DONE);
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REQUIRE(stats.getFullCount() == 1);
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REQUIRE(!row.produced());
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}
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auto block = row.stealBlock();
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AqlValue value = block->getValue(0, 0);
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REQUIRE(value.isNumber());
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REQUIRE(value.toInt64() == 1);
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}
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}
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}
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}
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} // namespace aql
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} // namespace tests
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} // namespace arangodb
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