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_usec_to_time.cpp
+++ b/src/sql/engine/expr/ob_expr_usec_to_time.cpp
@ -0,0 +1,121 @@
+/**
+ * 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_usec_to_time.h"
+#include "lib/ob_name_def.h"
+#include "sql/session/ob_sql_session_info.h"
+#include "sql/engine/ob_exec_context.h"
+#include "lib/timezone/ob_time_convert.h"
+
+namespace oceanbase {
+using namespace common;
+namespace sql {
+
+ObExprUsecToTime::ObExprUsecToTime(ObIAllocator& alloc)
+    : ObFuncExprOperator(alloc, T_FUN_SYS_USEC_TO_TIME, N_USEC_TO_TIME, 1, NOT_ROW_DIMENSION)
+{}
+
+ObExprUsecToTime::~ObExprUsecToTime()
+{}
+
+int ObExprUsecToTime::calc_result_type1(ObExprResType& type, ObExprResType& usec, common::ObExprTypeCtx& type_ctx) const
+{
+  UNUSED(type_ctx);
+  int ret = common::OB_SUCCESS;
+  if (OB_UNLIKELY(common::ObIntTC == type.get_type_class() && common::ObNullType != usec.get_type())) {
+    ret = common::OB_INVALID_ARGUMENT_FOR_USEC_TO_TIME;
+
+  } else {
+    type.set_timestamp();
+    type.set_scale(common::MAX_SCALE_FOR_TEMPORAL);
+    // set calc type
+    usec.set_calc_type(ObIntType);
+  }
+  return ret;
+}
+
+int ObExprUsecToTime::calc_result1(ObObj& result, const ObObj& usec, ObExprCtx& expr_ctx) const
+{
+  int ret = OB_SUCCESS;
+  if (OB_UNLIKELY(usec.is_null())) {
+    result.set_null();
+  } else {
+    TYPE_CHECK(usec, ObIntType);
+    int64_t value = usec.get_int();
+    int32_t offset = 0;
+    const ObTimeZoneInfo* tz_info = get_timezone_info(expr_ctx.my_session_);
+    if (NULL != tz_info && ObTimeConverter::ZERO_DATETIME != value) {
+      if (OB_FAIL(tz_info->get_timezone_offset(USEC_TO_SEC(value), offset))) {
+        LOG_WARN("failed to get offset between utc and local", K(ret));
+      } else {
+        value += SEC_TO_USEC(offset);
+      }
+    }
+    if (OB_SUCC(ret)) {
+      if (!ObTimeConverter::is_valid_datetime(value)) {
+        ret = OB_DATETIME_FUNCTION_OVERFLOW;
+        value -= SEC_TO_USEC(offset);
+        LOG_WARN("datetime overflow", K(ret), K(value));
+      } else {
+        value -= SEC_TO_USEC(offset);
+        result.set_timestamp(value);
+      }
+    }
+  }
+  return ret;
+}
+
+int calc_usec_to_time_expr(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res_datum)
+{
+  int ret = OB_SUCCESS;
+  ObDatum* usec_datum = NULL;
+  if (OB_FAIL(expr.args_[0]->eval(ctx, usec_datum))) {
+    LOG_WARN("eval arg failed", K(ret));
+  } else if (usec_datum->is_null()) {
+    res_datum.set_null();
+  } else {
+    int64_t value = usec_datum->get_int();
+    int32_t offset = 0;
+    const ObTimeZoneInfo* tz_info = get_timezone_info(ctx.exec_ctx_.get_my_session());
+    if (NULL != tz_info && ObTimeConverter::ZERO_DATETIME != value) {
+      if (OB_FAIL(tz_info->get_timezone_offset(USEC_TO_SEC(value), offset))) {
+        LOG_WARN("failed to get offset between utc and local", K(ret));
+      } else {
+        value += SEC_TO_USEC(offset);
+      }
+    }
+    if (OB_SUCC(ret)) {
+      if (!ObTimeConverter::is_valid_datetime(value)) {
+        ret = OB_DATETIME_FUNCTION_OVERFLOW;
+        value -= SEC_TO_USEC(offset);
+        LOG_WARN("datetime overflow", K(ret), K(value));
+      } else {
+        value -= SEC_TO_USEC(offset);
+        res_datum.set_int(value);
+      }
+    }
+  }
+  return ret;
+}
+
+int ObExprUsecToTime::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_usec_to_time_expr;
+  return ret;
+}
+}  // namespace sql
+}  // namespace oceanbase