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////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2018 ArangoDB GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Tobias Goedderz
/// @author Michael Hackstein
/// @author Heiko Kernbach
/// @author Jan Christoph Uhde
////////////////////////////////////////////////////////////////////////////////
#include "RowFetcherHelper.h"
#include "catch.hpp"
#include "fakeit.hpp"
#include "Aql/AqlItemBlock.h"
#include "Aql/Collection.h"
#include "Aql/DistinctCollectExecutor.h"
#include "Aql/ExecutionBlockImpl.h"
#include "Aql/ExecutionEngine.h"
#include "Aql/ExecutorInfos.h"
#include "Aql/OutputAqlItemRow.h"
#include "Aql/SingleRowFetcher.h"
#include "Transaction/Context.h"
#include "Transaction/Methods.h"
#include "tests/Mocks/Servers.h"
#include <velocypack/Builder.h>
#include <velocypack/velocypack-aliases.h>
#include <functional>
using namespace arangodb;
using namespace arangodb::aql;
namespace arangodb {
namespace tests {
namespace aql {
SCENARIO("DistinctCollectExecutor",
"[AQL][EXECUTOR][DISTINCTCOLLECTEXECUTOR]") {
ExecutionState state;
ResourceMonitor monitor;
AqlItemBlockManager itemBlockManager{&monitor};
GIVEN("there are no rows upstream") {
mocks::MockAqlServer server{};
std::unique_ptr<arangodb::aql::Query> fakedQuery = server.createFakeQuery();
arangodb::transaction::Methods* trx = fakedQuery->trx();
std::unordered_set<RegisterId> const regToClear;
std::unordered_set<RegisterId> const regToKeep;
std::vector<std::pair<RegisterId, RegisterId>> groupRegisters;
groupRegisters.emplace_back(std::make_pair<RegisterId, RegisterId>(1, 2));
std::unordered_set<RegisterId> readableInputRegisters;
std::unordered_set<RegisterId> writeableOutputRegisters;
DistinctCollectExecutorInfos infos(2 /*nrIn*/, 2 /*nrOut*/, regToClear,
regToKeep, std::move(readableInputRegisters),
std::move(writeableOutputRegisters),
std::move(groupRegisters), trx);
SharedAqlItemBlockPtr block{new AqlItemBlock(itemBlockManager, 1000, 2)};
VPackBuilder input;
NoStats stats{};
WHEN("the producer does not wait") {
SingleRowFetcherHelper<false> fetcher(input.steal(), false);
DistinctCollectExecutor testee(fetcher, infos);
THEN("the executor should return DONE") {
OutputAqlItemRow result(std::move(block), infos.getOutputRegisters(),
infos.registersToKeep(), infos.registersToClear());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::DONE);
REQUIRE(!result.produced());
}
}
WHEN("the producer waits") {
SingleRowFetcherHelper<false> fetcher(input.steal(), true);
DistinctCollectExecutor testee(fetcher, infos);
THEN("the executor should first return WAIT") {
OutputAqlItemRow result(std::move(block), infos.getOutputRegisters(),
infos.registersToKeep(), infos.registersToClear());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::WAITING);
REQUIRE(!result.produced());
AND_THEN("the executor should return DONE") {
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::DONE);
REQUIRE(!result.produced());
}
}
}
}
GIVEN("there are rows in the upstream - no distinct values") {
mocks::MockAqlServer server{};
std::unique_ptr<arangodb::aql::Query> fakedQuery = server.createFakeQuery();
arangodb::transaction::Methods* trx = fakedQuery->trx();
std::unordered_set<RegisterId> regToClear;
std::unordered_set<RegisterId> regToKeep;
std::vector<std::pair<RegisterId, RegisterId>> groupRegisters;
groupRegisters.emplace_back(std::make_pair<RegisterId, RegisterId>(1, 0));
std::unordered_set<RegisterId> readableInputRegisters;
readableInputRegisters.insert(0);
std::unordered_set<RegisterId> writeableOutputRegisters;
writeableOutputRegisters.insert(1);
RegisterId nrOutputRegister = 2;
DistinctCollectExecutorInfos infos(1 /*nrInputReg*/,
nrOutputRegister /*nrOutputReg*/, regToClear,
regToKeep, std::move(readableInputRegisters),
std::move(writeableOutputRegisters),
std::move(groupRegisters), trx);
SharedAqlItemBlockPtr block{new AqlItemBlock(itemBlockManager, 1000, nrOutputRegister)};
NoStats stats{};
WHEN("the producer does not wait") {
auto input = VPackParser::fromJson("[ [1], [2] ]");
SingleRowFetcherHelper<false> fetcher(input->steal(), false);
DistinctCollectExecutor testee(fetcher, infos);
THEN("the executor should return DONE") {
OutputAqlItemRow result(std::move(block), infos.getOutputRegisters(),
infos.registersToKeep(), infos.registersToClear());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::HASMORE);
REQUIRE(result.produced());
result.advanceRow();
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::DONE);
REQUIRE(result.produced());
result.advanceRow();
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::DONE);
REQUIRE(!result.produced());
auto block = result.stealBlock();
AqlValue x = block->getValue(0, 1);
REQUIRE(x.isNumber());
REQUIRE(x.toInt64() == 1);
AqlValue z = block->getValue(1, 1);
REQUIRE(z.isNumber());
REQUIRE(z.toInt64() == 2);
}
}
WHEN("the producer does wait") {
auto input = VPackParser::fromJson("[ [1], [2] ]");
SingleRowFetcherHelper<false> fetcher(input->steal(), true);
DistinctCollectExecutor testee(fetcher, infos);
THEN("the executor should return WAIT first") {
OutputAqlItemRow result(std::move(block), infos.getOutputRegisters(),
infos.registersToKeep(), infos.registersToClear());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::WAITING);
REQUIRE(!result.produced());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::HASMORE);
REQUIRE(result.produced());
result.advanceRow();
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::WAITING);
REQUIRE(!result.produced());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::DONE);
REQUIRE(result.produced());
result.advanceRow();
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::DONE);
REQUIRE(!result.produced());
auto block = result.stealBlock();
AqlValue x = block->getValue(0, 1);
REQUIRE(x.isNumber());
REQUIRE(x.toInt64() == 1);
AqlValue z = block->getValue(1, 1);
REQUIRE(z.isNumber());
REQUIRE(z.toInt64() == 2);
}
}
}
GIVEN("there are rows in the upstream - with distinct values") {
mocks::MockAqlServer server{};
std::unique_ptr<arangodb::aql::Query> fakedQuery = server.createFakeQuery();
arangodb::transaction::Methods* trx = fakedQuery->trx();
std::unordered_set<RegisterId> regToClear;
std::unordered_set<RegisterId> regToKeep;
std::vector<std::pair<RegisterId, RegisterId>> groupRegisters;
groupRegisters.emplace_back(std::make_pair<RegisterId, RegisterId>(1, 0));
std::unordered_set<RegisterId> readableInputRegisters;
readableInputRegisters.insert(0);
std::unordered_set<RegisterId> writeableOutputRegisters;
writeableOutputRegisters.insert(1);
RegisterId nrOutputRegister = 2;
DistinctCollectExecutorInfos infos(1 /*nrInputReg*/,
nrOutputRegister /*nrOutputReg*/, regToClear,
regToKeep, std::move(readableInputRegisters),
std::move(writeableOutputRegisters),
std::move(groupRegisters), trx);
SharedAqlItemBlockPtr block{new AqlItemBlock(itemBlockManager, 1000, nrOutputRegister)};
NoStats stats{};
WHEN("the producer does not wait") {
auto input = VPackParser::fromJson("[ [1], [2], [3], [1], [2] ]");
SingleRowFetcherHelper<false> fetcher(input->steal(), false);
DistinctCollectExecutor testee(fetcher, infos);
THEN("the executor should return DONE") {
OutputAqlItemRow result(std::move(block), infos.getOutputRegisters(),
infos.registersToKeep(), infos.registersToClear());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::HASMORE);
REQUIRE(result.produced());
result.advanceRow();
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::HASMORE);
REQUIRE(result.produced());
result.advanceRow();
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::HASMORE);
REQUIRE(result.produced());
result.advanceRow();
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::HASMORE);
REQUIRE(!result.produced());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::DONE);
REQUIRE(!result.produced());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::DONE);
REQUIRE(!result.produced());
auto block = result.stealBlock();
AqlValue x = block->getValue(0, 1);
REQUIRE(x.isNumber());
REQUIRE(x.toInt64() == 1);
AqlValue z = block->getValue(1, 1);
REQUIRE(z.isNumber());
REQUIRE(z.toInt64() == 2);
AqlValue y = block->getValue(2, 1);
REQUIRE(y.isNumber());
REQUIRE(y.toInt64() == 3);
}
}
WHEN("the producer does wait") {
auto input = VPackParser::fromJson("[ [1], [2], [3], [1], [2] ]");
SingleRowFetcherHelper<false> fetcher(input->steal(), true);
DistinctCollectExecutor testee(fetcher, infos);
THEN("the executor should return DONE") {
OutputAqlItemRow result(std::move(block), infos.getOutputRegisters(),
infos.registersToKeep(), infos.registersToClear());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::WAITING);
REQUIRE(!result.produced());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::HASMORE);
REQUIRE(result.produced());
result.advanceRow();
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::WAITING);
REQUIRE(!result.produced());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::HASMORE);
REQUIRE(result.produced());
result.advanceRow();
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::WAITING);
REQUIRE(!result.produced());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::HASMORE);
REQUIRE(result.produced());
result.advanceRow();
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::WAITING);
REQUIRE(!result.produced());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::HASMORE);
REQUIRE(!result.produced());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::WAITING);
REQUIRE(!result.produced());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::DONE);
REQUIRE(!result.produced());
std::tie(state, stats) = testee.produceRows(result);
REQUIRE(state == ExecutionState::DONE);
REQUIRE(!result.produced());
auto block = result.stealBlock();
AqlValue x = block->getValue(0, 1);
REQUIRE(x.isNumber());
REQUIRE(x.toInt64() == 1);
AqlValue z = block->getValue(1, 1);
REQUIRE(z.isNumber());
REQUIRE(z.toInt64() == 2);
AqlValue y = block->getValue(2, 1);
REQUIRE(y.isNumber());
REQUIRE(y.toInt64() == 3);
}
}
}
}
} // namespace aql
} // namespace tests
} // namespace arangodb
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