update delete index_scan exec

chagelo · Jan 16, 2024 · b9361b9 · b9361b9
1 parent 4a721ee
commit b9361b9
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Showing 4 changed files with 47 additions and 13 deletions.
diff --git a/src/execution/delete_executor.cpp b/src/execution/delete_executor.cpp
@@ -10,18 +10,57 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include <cstdint>
 #include <memory>
 
+#include "common/config.h"
 #include "execution/executors/delete_executor.h"
+#include "storage/table/tuple.h"
+#include "type/type_id.h"
+#include "type/value.h"
 
 namespace bustub {
 
 DeleteExecutor::DeleteExecutor(ExecutorContext *exec_ctx, const DeletePlanNode *plan,
                                std::unique_ptr<AbstractExecutor> &&child_executor)
-    : AbstractExecutor(exec_ctx) {}
+    : AbstractExecutor(exec_ctx), plan_(plan), child_executor_(child_executor.release()) {}
 
-void DeleteExecutor::Init() { throw NotImplementedException("DeleteExecutor is not implemented"); }
+void DeleteExecutor::Init() {
+  child_executor_->Init();
+  table_info_ = exec_ctx_->GetCatalog()->GetTable(plan_->TableOid());
+  index_info_ = exec_ctx_->GetCatalog()->GetTableIndexes(table_info_->name_);
+}
 
-auto DeleteExecutor::Next([[maybe_unused]] Tuple *tuple, RID *rid) -> bool { return false; }
+auto DeleteExecutor::Next(Tuple *tuple, RID *rid) -> bool {
+  if (is_ok_) {
+    return false;
+  }
+
+  if (table_info_->schema_.GetColumnCount() != child_executor_->GetOutputSchema().GetColumnCount()) {
+    return false;
+  }
+
+  auto count = 0;
+  while (child_executor_->Next(tuple, rid)) {
+    if (rid->GetPageId() == INVALID_PAGE_ID) {
+      continue;
+    }
+
+    auto tuple_meta = table_info_->table_->GetTupleMeta(*rid);
+    tuple_meta.is_deleted_ = true;
+    table_info_->table_->UpdateTupleMeta(tuple_meta, *rid);
+
+    for (auto &index : index_info_) {
+      auto delete_key = tuple->KeyFromTuple(table_info_->schema_, index->key_schema_, index->index_->GetKeyAttrs());
+      index->index_->DeleteEntry(delete_key, *rid, nullptr);
+    }
+
+    count++;
+  }
+  is_ok_ = true;
+  auto shema = GetOutputSchema();
+  *tuple = Tuple{std::vector<Value>{{TypeId::INTEGER, count}}, &shema};
+  return true;
+}
 
 }  // namespace bustub
diff --git a/src/execution/index_scan_executor.cpp b/src/execution/index_scan_executor.cpp
@@ -25,10 +25,7 @@ IndexScanExecutor::IndexScanExecutor(ExecutorContext *exec_ctx, const IndexScanP
 void IndexScanExecutor::Init() {}
 
 auto IndexScanExecutor::Next(Tuple *tuple, RID *rid) -> bool {
-  std::cout << index_info_->key_size_ << " " << index_info_->index_oid_ << " " << plan_->OutputSchema().ToString() << " " << std::endl;
-  std::cout << index_info_->key_schema_.ToString() << std::endl;
-
-  for (; !iter_.IsEnd(); ) {
+  for (; !iter_.IsEnd();) {
     *rid = (*iter_).second;
     ++iter_;
     auto [tuple_meta, tmp_tuple] = table_info_->table_->GetTuple(*rid);

diff --git a/src/include/execution/executors/delete_executor.h b/src/include/execution/executors/delete_executor.h
@@ -16,6 +16,7 @@
 #include <utility>
 #include <vector>
 
+#include "catalog/catalog.h"
 #include "execution/executor_context.h"
 #include "execution/executors/abstract_executor.h"
 #include "execution/plans/delete_plan.h"
@@ -60,5 +61,8 @@ class DeleteExecutor : public AbstractExecutor {
   const DeletePlanNode *plan_;
   /** The child executor from which RIDs for deleted tuples are pulled */
   std::unique_ptr<AbstractExecutor> child_executor_;
+  TableInfo *table_info_;
+  std::vector<IndexInfo *> index_info_;
+  bool is_ok_{false};
 };
 }  // namespace bustub
diff --git a/test/sql/p3.07-simple-agg.slt b/test/sql/p3.07-simple-agg.slt
@@ -1,11 +1,5 @@
 # 4 pts
 
-# How many TAs are there in 2023 Spring?
-query
-select count(*) from __mock_table_tas_2023;
-----
-9
-
 # The real test process begins...
 
 # Create a table