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src/sql/engine/expr/ob_expr_stmt_id.cpp

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+/**
+ * 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_ENG
+
+#include "sql/engine/expr/ob_expr_stmt_id.h"
+#include "share/ob_i_sql_expression.h"
+#include "sql/engine/ob_physical_plan_ctx.h"
+
+namespace oceanbase {
+namespace sql {
+ObExprStmtId::ObExprStmtId(common::ObIAllocator& alloc)
+    : ObFuncExprOperator(alloc, T_FUN_SYS_STMT_ID, "stmt_id", 0, NOT_ROW_DIMENSION)
+{}
+
+int ObExprStmtId::calc_result_type0(ObExprResType& type, ObExprTypeCtx& type_ctx) const
+{
+  UNUSED(type_ctx);
+  type.set_int();
+  return OB_SUCCESS;
+}
+
+int ObExprStmtId::calc_result0(ObObj& result, ObExprCtx& expr_ctx) const
+{
+  int ret = OB_SUCCESS;
+  ObPhysicalPlanCtx* plan_ctx = expr_ctx.phy_plan_ctx_;
+  if (OB_ISNULL(plan_ctx)) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("plan_ctx is null");
+  } else {
+    result.set_int(plan_ctx->get_cur_stmt_id());
+  }
+  return ret;
+}
+}  // namespace sql
+}  // namespace oceanbase