init push

2021-05-31 22:56:52 +08:00
commit cea7de1475
7020 changed files with 5689869 additions and 0 deletions
--- a/src/sql/engine/set/ob_append.cpp
+++ b/src/sql/engine/set/ob_append.cpp
@ -0,0 +1,123 @@
+/**
+ * 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/set/ob_append.h"
+#include "common/object/ob_object.h"
+#include "sql/engine/expr/ob_expr_operator.h"
+
+namespace oceanbase {
+using namespace common;
+namespace sql {
+
+class ObAppend::ObAppendCtx : public ObPhyOperatorCtx {
+  public:
+  explicit ObAppendCtx(ObExecContext& ctx) : ObPhyOperatorCtx(ctx), current_child_op_idx_(0)
+  {}
+  ~ObAppendCtx()
+  {}
+  virtual void destroy()
+  {
+    ObPhyOperatorCtx::destroy_base();
+  }
+
+  public:
+  int64_t current_child_op_idx_;
+};
+
+ObAppend::ObAppend(common::ObIAllocator& alloc) : ObMultiChildrenPhyOperator(alloc)
+{}
+
+ObAppend::~ObAppend()
+{}
+
+void ObAppend::reset()
+{
+  ObMultiChildrenPhyOperator::reset();
+}
+
+void ObAppend::reuse()
+{
+  ObMultiChildrenPhyOperator::reuse();
+}
+
+int ObAppend::inner_get_next_row(ObExecContext& ctx, const ObNewRow*& row) const
+{
+  int ret = OB_SUCCESS;
+  ObAppendCtx* append_ctx = NULL;
+  if (OB_ISNULL(append_ctx = GET_PHY_OPERATOR_CTX(ObAppendCtx, ctx, get_id()))) {
+    ret = OB_ERR_NULL_VALUE;
+  } else if (append_ctx->current_child_op_idx_ >= child_num_ || append_ctx->current_child_op_idx_ < 0) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("unexpected error. current child op idx is out of range", K(ret), K(append_ctx->current_child_op_idx_));
+  } else if (OB_ISNULL(child_array_[append_ctx->current_child_op_idx_])) {
+    ret = OB_NOT_INIT;
+    LOG_WARN("child_op_ is null");
+  } else if (child_array_[append_ctx->current_child_op_idx_]->is_dml_operator()) {
+    ret = OB_ITER_END;
+  } else {
+    ret = child_array_[append_ctx->current_child_op_idx_]->get_next_row(ctx, row);
+    if (OB_SUCCESS != ret && OB_ITER_END != ret) {
+      LOG_WARN("fail to get next row", K(ret));
+    }
+  }
+  return ret;
+}
+
+int ObAppend::get_next_row(ObExecContext& ctx, const ObNewRow*& row) const
+{
+  int ret = OB_SUCCESS;
+  ObAppendCtx* append_ctx = NULL;
+  if (OB_ISNULL(append_ctx = GET_PHY_OPERATOR_CTX(ObAppendCtx, ctx, get_id()))) {
+    ret = OB_ERR_NULL_VALUE;
+  } else {
+    while (true) {
+      ret = inner_get_next_row(ctx, row);
+      if (OB_SUCC(ret)) {
+        break;
+      } else if (OB_ITER_END == ret) {
+        if (append_ctx->current_child_op_idx_ < child_num_ - 1) {
+          ++append_ctx->current_child_op_idx_;
+          // go on iterating
+        } else {
+          // iterate ended. really.
+          break;
+        }
+      } else {
+        LOG_WARN("inner get next row failed", K(ret));
+        break;
+      }
+    }
+  }
+  return ret;
+}
+
+int ObAppend::init_op_ctx(ObExecContext& ctx) const
+{
+  ObPhyOperatorCtx* op_ctx = NULL;
+  UNUSED(op_ctx);
+  return CREATE_PHY_OPERATOR_CTX(ObAppendCtx, ctx, get_id(), get_type(), op_ctx);
+}
+
+int ObAppend::inner_open(ObExecContext& ctx) const
+{
+  int ret = OB_SUCCESS;
+  if (OB_FAIL(init_op_ctx(ctx))) {
+    LOG_WARN("init operator context failed", K(ret), K_(id));
+  } else if (OB_FAIL(handle_op_ctx(ctx))) {
+    LOG_WARN("handle op ctx failed", K(ret));
+  }
+  return ret;
+}
+
+}  // namespace sql
+}  // namespace oceanbase