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src/sql/optimizer/ob_log_append.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_OPT
+#include "ob_log_append.h"
+
+using namespace oceanbase;
+using namespace sql;
+using namespace oceanbase::common;
+using namespace oceanbase::sql::log_op_def;
+
+ObLogAppend::ObLogAppend(ObLogPlan& plan) : ObLogicalOperator(plan)
+{
+  sub_plan_num_ = 0;
+  for (int64_t i = 0; i < OB_SQL_MAX_CHILD_OPERATOR_NUM; ++i) {
+    sub_plan_[i] = NULL;
+  }
+  type_ = log_op_def::LOG_APPEND;
+}
+
+int ObLogAppend::add_sub_plan(ObLogPlan* sub_plan)
+{
+  int ret = OB_SUCCESS;
+  if (OB_ISNULL(sub_plan)) {
+    ret = OB_INVALID_ARGUMENT;
+    LOG_WARN("sub plan is null", K(sub_plan), K(ret));
+  } else if (OB_UNLIKELY(sub_plan_num_ >= OB_SQL_MAX_CHILD_OPERATOR_NUM)) {
+    ret = OB_SIZE_OVERFLOW;
+    LOG_WARN("size overflow. too many sub plans", K(sub_plan_num_), K(ret));
+  } else {
+    sub_plan_[sub_plan_num_] = sub_plan;
+    ++sub_plan_num_;
+  }
+  return ret;
+}
+
+int ObLogAppend::copy_without_child(ObLogicalOperator*& out)
+{
+  int ret = OB_SUCCESS;
+  out = NULL;
+  ObLogicalOperator* op = NULL;
+  ObLogAppend* append = NULL;
+  if (OB_FAIL(clone(op))) {
+    LOG_WARN("failed to clone ObLogAppend op", K(ret));
+  } else if (OB_ISNULL(append = static_cast<ObLogAppend*>(op))) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("failed to cast ObLogicalOperator to ObLogAppend", K(ret));
+  } else {
+    append->sub_plan_num_ = sub_plan_num_;
+    for (int64_t i = 0; i < sub_plan_num_; ++i) {
+      append->sub_plan_[i] = sub_plan_[i];
+    }
+    out = append;
+  }
+  return ret;
+}