patch 4.0

src/sql/optimizer/ob_log_stat_collector.cpp

@@ -0,0 +1,56 @@
+/**
+ * Copyright (c) 2021 OceanBase
+ * OceanBase CE is licensed under Mulan PubL v2.
+ * You can use this software according to the terms and conditions of the Mulan PubL v2.
+ * You may obtain a copy of Mulan PubL v2 at:
+ *          http://license.coscl.org.cn/MulanPubL-2.0
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PubL v2 for more details.
+ */
+
+#define USING_LOG_PREFIX SQL_OPT
+
+#include "sql/optimizer/ob_log_stat_collector.h"
+
+using namespace oceanbase::sql;
+using namespace oceanbase::common;
+
+
+const char *ObLogStatCollector::get_name() const
+{
+  static const char *name[1] =
+  {
+    "STATISTICS COLLECTOR",
+  };
+  return name[0];
+}
+
+int ObLogStatCollector::set_sort_keys(const common::ObIArray<OrderItem> &order_keys)
+{
+  int ret = OB_SUCCESS;
+  if (OB_FAIL(sort_keys_.assign(order_keys))) {
+    LOG_WARN("failed to set sort keys", K(ret));
+  } else { /* do nothing */ }
+  return ret;
+}
+
+int ObLogStatCollector::get_op_exprs(ObIArray<ObRawExpr*> &all_exprs)
+{
+  int ret = OB_SUCCESS;
+  for (int64_t i = 0; OB_SUCC(ret) && i < sort_keys_.count(); i++) {
+    if (OB_ISNULL(sort_keys_.at(i).expr_)) {
+      ret = OB_ERR_UNEXPECTED;
+      LOG_WARN("get unexpected null", K(ret));
+    } else if (OB_FAIL(all_exprs.push_back(sort_keys_.at(i).expr_))) {
+      LOG_WARN("failed to push back exprs", K(ret));
+    } else { /*do nothing*/ }
+  }
+  if (OB_SUCC(ret)) {
+    if (OB_FAIL(ObLogicalOperator::get_op_exprs(all_exprs))) {
+      LOG_WARN("failed to get op exprs", K(ret));
+    } else { /*do nothing*/ }
+  }
+  return ret;
+}