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_lengthb.cpp
+++ b/src/sql/engine/expr/ob_expr_lengthb.cpp
@ -0,0 +1,130 @@
+/**
+ * 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_lengthb.h"
+#include "sql/engine/expr/ob_expr_util.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/engine/expr/ob_expr_promotion_util.h"
+#include "sql/session/ob_sql_session_info.h"
+
+namespace oceanbase {
+using namespace common;
+namespace sql {
+
+ObExprLengthb::ObExprLengthb(ObIAllocator& alloc)
+    : ObFuncExprOperator(alloc, T_FUN_SYS_LENGTHB, N_LENGTHB, 1, NOT_ROW_DIMENSION)
+{}
+
+ObExprLengthb::~ObExprLengthb()
+{}
+
+int ObExprLengthb::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 {
+    const ObAccuracy& acc = ObAccuracy::DDL_DEFAULT_ACCURACY2[common::ORACLE_MODE][common::ObNumberType];
+    type.set_number();
+    type.set_scale(acc.get_scale());
+    type.set_precision(acc.get_precision());
+    if (!text.is_string_type()) {
+      text.set_calc_type(ObVarcharType);
+      text.set_calc_collation_type(session->get_nls_collation());
+      text.set_calc_collation_level(CS_LEVEL_IMPLICIT);
+    }
+    if (session->use_static_typing_engine() && text.get_calc_meta().is_text()) {
+      ret = OB_CLOB_ONLY_SUPPORT_WITH_MULTIBYTE_FUN;
+      LOG_WARN("CLOB or NCLOB in multibyte character set not supported", K(text), K(ret));
+      LOG_USER_ERROR(OB_CLOB_ONLY_SUPPORT_WITH_MULTIBYTE_FUN);
+    }
+    OX(ObExprOperator::calc_result_flag1(type, text));
+  }
+
+  return ret;
+}
+
+int ObExprLengthb::calc(ObObj& result, const ObObj& text, ObExprCtx& expr_ctx)
+{
+  int ret = OB_SUCCESS;
+  ObObjTypeClass type_class = ob_obj_type_class(text.get_type());
+  if (text.is_text()) {
+    ret = OB_CLOB_ONLY_SUPPORT_WITH_MULTIBYTE_FUN;
+    LOG_WARN("CLOB or NCLOB in multibyte character set not supported", K(text), K(ret));
+    LOG_USER_ERROR(OB_CLOB_ONLY_SUPPORT_WITH_MULTIBYTE_FUN);
+    result.set_null();
+  } else if (!ob_is_castable_type_class(type_class)) {
+    result.set_null();
+  } else {
+    ObString m_text = text.get_string();
+    number::ObNumber num;
+    if (OB_FAIL(num.from(static_cast<int64_t>(m_text.length()), *(expr_ctx.calc_buf_)))) {
+      LOG_WARN("copy number fail", K(ret));
+    } else {
+      result.set_number(num);
+    }
+  }
+  UNUSED(expr_ctx);
+  return ret;
+}
+
+int ObExprLengthb::calc_result1(ObObj& result, const ObObj& text, ObExprCtx& expr_ctx) const
+{
+  int ret = OB_SUCCESS;
+  ret = calc(result, text, expr_ctx);
+  return ret;
+}
+
+int ObExprLengthb::calc_lengthb_expr(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res_datum)
+{
+  int ret = OB_SUCCESS;
+  if (OB_UNLIKELY(1 != expr.arg_cnt_)) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("unexpected arg cnt", K(ret), K(expr.arg_cnt_));
+  } else {
+    ObDatum* arg0 = NULL;
+    ObObjTypeClass type_class = ob_obj_type_class(expr.args_[0]->datum_meta_.type_);
+    if (OB_FAIL(expr.eval_param_value(ctx, arg0))) {
+      LOG_WARN("eval_param_value failed", K(ret));
+    } else if (arg0->is_null() || !ob_is_castable_type_class(type_class)) {
+      res_datum.set_null();
+    } else {
+      number::ObNumber num;
+      ObNumStackOnceAlloc tmp_alloc;
+      if (OB_FAIL(num.from(static_cast<int64_t>(arg0->len_), tmp_alloc))) {
+        LOG_WARN("copy number fail", K(ret));
+      } else {
+        res_datum.set_number(num);
+      }
+    }
+  }
+  return ret;
+}
+
+int ObExprLengthb::cg_expr(ObExprCGCtx& expr_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const
+{
+  int ret = OB_SUCCESS;
+  UNUSED(expr_cg_ctx);
+  UNUSED(raw_expr);
+  rt_expr.eval_func_ = calc_lengthb_expr;
+  return ret;
+}
+
+}  // namespace sql
+}  // namespace oceanbase