void TupleValueExpression::PerformBinding(
const std::vector<const planner::BindingContext *> &binding_contexts) {
const auto &context = binding_contexts[GetTupleId()];
ai_ = context->Find(GetColumnId());
PELOTON_ASSERT(ai_ != nullptr);
LOG_TRACE("TVE Column ID %u.%u binds to AI %p (%s)", GetTupleId(),
GetColumnId(), ai_, ai_->name.c_str());
}
void OperatorToPlanTransformer::Visit(const PhysicalProject *) {
auto project_prop = requirements_->GetPropertyOfType(PropertyType::PROJECT)
->As<PropertyProjection>();
(void)project_prop;
size_t project_list_size = project_prop->GetProjectionListSize();
// expressions to evaluate
TargetList tl = TargetList();
// columns which can be returned directly
DirectMapList dml = DirectMapList();
// schema of the projections output
std::vector<catalog::Column> columns;
for (size_t project_idx = 0; project_idx < project_list_size; project_idx++) {
auto expr = project_prop->GetProjection(project_idx);
std::string column_name;
// if the root of the expression is a column value we can
// just do a direct mapping
if (expr->GetExpressionType() == ExpressionType::VALUE_TUPLE) {
auto tup_expr = (expression::TupleValueExpression *)expr;
column_name = tup_expr->GetColumnName();
dml.push_back(
DirectMap(project_idx, std::make_pair(0, tup_expr->GetColumnId())));
}
// otherwise we need to evaluat the expression
else {
column_name = "expr" + std::to_string(project_idx);
tl.push_back(Target(project_idx, expr->Copy()));
}
columns.push_back(catalog::Column(
expr->GetValueType(), type::Type::GetTypeSize(expr->GetValueType()),
column_name));
}
// build the projection plan node and insert aboce the scan
std::unique_ptr<planner::ProjectInfo> proj_info(
new planner::ProjectInfo(std::move(tl), std::move(dml)));
std::shared_ptr<catalog::Schema> schema_ptr(new catalog::Schema(columns));
std::unique_ptr<planner::AbstractPlan> project_plan(
new planner::ProjectionPlan(std::move(proj_info), schema_ptr));
output_plan_ = std::move(project_plan);
}
// -------------------------------------------------------------------------------- //
void guPLSoListBox::SetTracksOrder( const int order )
{
if( !m_DisableSorting )
{
if( m_TracksOrder != order )
{
m_TracksOrder = order;
if( order == wxNOT_FOUND )
m_TracksOrderDesc = false;
}
else if( order != wxNOT_FOUND )
{
m_TracksOrderDesc = !m_TracksOrderDesc;
if( !m_TracksOrderDesc )
{
m_TracksOrder = wxNOT_FOUND;
m_TracksOrderDesc = false;
}
}
int ColId = m_TracksOrder;
// Create the Columns
int CurColId;
int Index;
int Count = m_ColumnNames.Count();
for( Index = 0; Index < Count; Index++ )
{
CurColId = GetColumnId( Index );
SetColumnLabel( Index,
m_ColumnNames[ CurColId ] + ( ( ColId == CurColId ) ? ( m_TracksOrderDesc ? wxT( " ▼" ) : wxT( " ▲" ) ) : wxEmptyString ) );
}
ReloadItems();
}
}
bool HashExecutor::DExecute() {
LOG_INFO("Hash Executor");
if (done_ == false) {
const planner::HashPlan &node = GetPlanNode<planner::HashPlan>();
// First, get all the input logical tiles
while (children_[0]->Execute()) {
child_tiles_.emplace_back(children_[0]->GetOutput());
}
if (child_tiles_.size() == 0) {
LOG_TRACE("Hash Executor : false -- no child tiles ");
return false;
}
/* *
* HashKeys is a vector of TupleValue expr
* from which we construct a vector of column ids that represent the
* attributes of the underlying table.
* The hash table is built on top of these hash key attributes
* */
auto &hashkeys = node.GetHashKeys();
// Construct a logical tile
for (auto &hashkey : hashkeys) {
assert(hashkey->GetExpressionType() == EXPRESSION_TYPE_VALUE_TUPLE);
auto tuple_value =
reinterpret_cast<const expression::TupleValueExpression *>(
hashkey.get());
column_ids_.push_back(tuple_value->GetColumnId());
}
// Construct the hash table by going over each child logical tile and
// hashing
for (size_t child_tile_itr = 0; child_tile_itr < child_tiles_.size();
child_tile_itr++) {
auto tile = child_tiles_[child_tile_itr].get();
// Go over all tuples in the logical tile
for (oid_t tuple_id : *tile) {
// Key : container tuple with a subset of tuple attributes
// Value : < child_tile offset, tuple offset >
hash_table_[HashMapType::key_type(tile, tuple_id, &column_ids_)].insert(
std::make_pair(child_tile_itr, tuple_id));
}
}
done_ = true;
}
// Return logical tiles one at a time
while (result_itr < child_tiles_.size()) {
if (child_tiles_[result_itr]->GetTupleCount() == 0) {
result_itr++;
continue;
} else {
SetOutput(child_tiles_[result_itr++].release());
LOG_TRACE("Hash Executor : true -- return tile one at a time ");
return true;
}
}
LOG_TRACE("Hash Executor : false -- done ");
return false;
}