void DeleteTranslator::InitializeQueryState() {
CodeGen &codegen = GetCodeGen();
const planner::DeletePlan &plan = GetPlanAs<planner::DeletePlan>();
// Get the table pointer
storage::DataTable *table = plan.GetTable();
llvm::Value *table_ptr = codegen.Call(
StorageManagerProxy::GetTableWithOid,
{GetStorageManagerPtr(), codegen.Const32(table->GetDatabaseOid()),
codegen.Const32(table->GetOid())});
// Call Deleter.Init(txn, table)
llvm::Value *deleter = LoadStatePtr(deleter_state_id_);
codegen.Call(DeleterProxy::Init,
{deleter, table_ptr, GetExecutorContextPtr()});
}
// Produce!
void TableScanTranslator::Produce() const {
auto &codegen = GetCodeGen();
auto &table = GetTable();
LOG_TRACE("TableScan on [%u] starting to produce tuples ...", table.GetOid());
// Get the table instance from the database
llvm::Value *storage_manager_ptr = GetStorageManagerPtr();
llvm::Value *db_oid = codegen.Const32(table.GetDatabaseOid());
llvm::Value *table_oid = codegen.Const32(table.GetOid());
llvm::Value *table_ptr =
codegen.Call(StorageManagerProxy::GetTableWithOid,
{storage_manager_ptr, db_oid, table_oid});
// The selection vector for the scan
auto *raw_vec = codegen.AllocateBuffer(
codegen.Int32Type(), Vector::kDefaultVectorSize, "scanSelVector");
Vector sel_vec{raw_vec, Vector::kDefaultVectorSize, codegen.Int32Type()};
auto predicate = const_cast<expression::AbstractExpression *>(
GetScanPlan().GetPredicate());
llvm::Value *predicate_ptr = codegen->CreateIntToPtr(
codegen.Const64((int64_t)predicate),
AbstractExpressionProxy::GetType(codegen)->getPointerTo());
size_t num_preds = 0;
auto *zone_map_manager = storage::ZoneMapManager::GetInstance();
if (predicate != nullptr && zone_map_manager->ZoneMapTableExists()) {
if (predicate->IsZoneMappable()) {
num_preds = predicate->GetNumberofParsedPredicates();
}
}
ScanConsumer scan_consumer{*this, sel_vec};
table_.GenerateScan(codegen, table_ptr, sel_vec.GetCapacity(), scan_consumer,
predicate_ptr, num_preds);
LOG_TRACE("TableScan on [%u] finished producing tuples ...", table.GetOid());
}
