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/expr/ob_expr_bit_length.cpp
+++ b/src/sql/engine/expr/ob_expr_bit_length.cpp
@ -0,0 +1,115 @@
+/**
+ * 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_bit_length.h"
+
+#include <string.h>
+#include "lib/oblog/ob_log.h"
+#include "share/object/ob_obj_cast.h"
+#include "sql/parser/ob_item_type.h"
+#include "sql/session/ob_sql_session_info.h"
+#include "sql/engine/expr/ob_expr_util.h"
+
+namespace oceanbase {
+using namespace common;
+namespace sql {
+
+ObExprBitLength::ObExprBitLength(ObIAllocator& alloc)
+    : ObFuncExprOperator(alloc, T_FUN_SYS_BIT_LENGTH, N_BIT_LENGTH, 1, NOT_ROW_DIMENSION)
+{}
+
+ObExprBitLength::~ObExprBitLength()
+{}
+
+int ObExprBitLength::calc_result_type1(ObExprResType& type, ObExprResType& text, ObExprTypeCtx& type_ctx) const
+{
+  int ret = OB_SUCCESS;
+  const ObSQLSessionInfo* session = type_ctx.get_session();
+  if (OB_ISNULL(session)) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("session is NULL", K(ret));
+  } else {
+    type.set_int();
+    type.set_scale(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObIntType].scale_);
+    type.set_precision(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObIntType].precision_);
+    text.set_calc_type(common::ObVarcharType);
+    OX(ObExprOperator::calc_result_flag1(type, text));
+  }
+  return ret;
+}
+
+int ObExprBitLength::calc_result1(ObObj& result, const ObObj& text, ObExprCtx& expr_ctx) const
+{
+  UNUSED(expr_ctx);
+  int ret = OB_SUCCESS;
+  ObObjTypeClass type_class = ob_obj_type_class(text.get_type());
+  if (!ob_is_castable_type_class(type_class)) {
+    result.set_null();
+  } else {
+    TYPE_CHECK(text, ObVarcharType);
+    ObString m_text = text.get_string();
+    result.set_int(static_cast<int64_t>(m_text.length() * 8));
+  }
+  return ret;
+}
+
+int ObExprBitLength::cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const
+{
+  UNUSED(op_cg_ctx);
+  UNUSED(raw_expr);
+  int ret = OB_SUCCESS;
+  if (rt_expr.arg_cnt_ != 1) {
+    ret = OB_INVALID_ARGUMENT;
+    LOG_WARN("bit length expr should have one param", K(ret), K(rt_expr.arg_cnt_));
+  } else if (OB_ISNULL(rt_expr.args_) || OB_ISNULL(rt_expr.args_[0])) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("children of bit length expr is null", K(ret), K(rt_expr.args_));
+  } else {
+    ObObjType text_type = rt_expr.args_[0]->datum_meta_.type_;
+    ObObjTypeClass type_class = ob_obj_type_class(text_type);
+
+    if (!ob_is_castable_type_class(type_class)) {
+      rt_expr.eval_func_ = ObExprBitLength::calc_null;
+    } else {
+      CK(ObVarcharType == text_type);
+      rt_expr.eval_func_ = ObExprBitLength::calc_bit_length;
+    }
+  }
+  return ret;
+}
+
+int ObExprBitLength::calc_null(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum)
+{
+  UNUSED(expr);
+  UNUSED(ctx);
+  expr_datum.set_null();
+  return OB_SUCCESS;
+}
+
+int ObExprBitLength::calc_bit_length(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum)
+{
+  int ret = OB_SUCCESS;
+  ObDatum* text_datum = NULL;
+  if (OB_FAIL(expr.args_[0]->eval(ctx, text_datum))) {
+    LOG_WARN("eval param value failed", K(ret));
+  } else if (text_datum->is_null()) {
+    expr_datum.set_null();
+  } else {
+    expr_datum.set_int(static_cast<int64_t>(text_datum->len_ * 8));
+  }
+  return ret;
+}
+
+}  // namespace sql
+}  // namespace oceanbase