本文整理汇总了C++中ProjectionScan::setTXContext方法的典型用法代码示例。如果您正苦于以下问题：C++ ProjectionScan::setTXContext方法的具体用法？C++ ProjectionScan::setTXContext怎么用？C++ ProjectionScan::setTXContext使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ProjectionScan的用法示例。
在下文中一共展示了ProjectionScan::setTXContext方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1:
TEST_F(TransactionTests, read_own_writes) {
auto writeCtx = hyrise::tx::TransactionManager::getInstance().buildContext();
auto& mod = hyrise::tx::TransactionManager::getInstance()[writeCtx.tid];
ASSERT_EQ(0u, mod.inserted.size());
size_t before = linxxxs->size();
// Add One read all
InsertScan is;
is.setTXContext(writeCtx);
is.addInput(linxxxs);
is.setInputData(one_row);
is.execute();
ASSERT_EQ(1u, mod.inserted.size());
ASSERT_EQ(1u, mod.inserted[linxxxs].size());
ProjectionScan ps;
ps.addField(0);
ps.setTXContext(writeCtx);
ps.addInput(is.getResultTable());
ps.execute();
ValidatePositions vp;
vp.setTXContext(writeCtx);
vp.addInput(ps.getResultTable());
vp.execute();
auto r1 = vp.getResultTable();
ASSERT_EQ(before + 1, r1->size());
}示例2: getNumberOfCoresOnSystem
TEST_F(TransactionTests, parallel_writer) {
// first insert a lot in parallel
const size_t thread_count = getNumberOfCoresOnSystem();
const size_t inserts_per_thread = 1000;
std::vector<std::thread> threads;
for (size_t i = 0; i < thread_count; ++i) {
threads.push_back(std::thread(parallel_writer_thread_function, linxxxs, one_row, inserts_per_thread));
}
for (auto& thread : threads) {
thread.join();
}
// read all inserted rows and check if correct
auto readCtx = tx::TransactionManager::getInstance().buildContext();
// std::cout << "read context. cid: " << readCtx.cid << ". lastCid: " << readCtx.lastCid << ". tid: " << readCtx.tid
// << std::endl;
ProjectionScan ps;
ps.addInput(linxxxs);
ps.setTXContext(readCtx);
ps.addField(0);
ps.addField(1);
ps.execute();
ValidatePositions vp;
vp.setTXContext(readCtx);
vp.addInput(ps.getResultTable());
vp.execute();
auto res = vp.getResultTable();
auto size = res->size();
long sum = 0;
for (size_t i = 0; i < size; ++i) {
sum += res->getValue<hyrise_int_t>(0, i);
}
ASSERT_EQ(sum, (thread_count * inserts_per_thread * 99) + 8 + 6 + 400 + 200);
}