| /** |
| * Copyright 2011-2015 Quickstep Technologies LLC. |
| * Copyright 2015 Pivotal Software, Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| **/ |
| |
| #ifndef QUICKSTEP_TYPES_DATETIME_TYPE_HPP_ |
| #define QUICKSTEP_TYPES_DATETIME_TYPE_HPP_ |
| |
| #include <cstddef> |
| #include <cstdio> |
| #include <string> |
| |
| #include "types/DatetimeLit.hpp" |
| #include "types/Type.hpp" |
| #include "types/TypeID.hpp" |
| #include "utility/Macros.hpp" |
| |
| namespace quickstep { |
| |
| class TypedValue; |
| |
| /** \addtogroup Types |
| * @{ |
| */ |
| |
| /** |
| * @brief A type representing the datetime. |
| **/ |
| class DatetimeType : public Type { |
| public: |
| typedef DatetimeLit cpptype; |
| |
| static const TypeID kStaticTypeID = kDatetime; |
| |
| /** |
| * @brief Get a reference to the non-nullable singleton instance of this |
| * Type. |
| * |
| * @return A reference to the non-nullable singleton instance of this Type. |
| **/ |
| static const DatetimeType& InstanceNonNullable() { |
| static DatetimeType instance(false); |
| return instance; |
| } |
| |
| /** |
| * @brief Get a reference to the nullable singleton instance of this Type. |
| * |
| * @return A reference to the nullable singleton instance of this Type. |
| **/ |
| static const DatetimeType& InstanceNullable() { |
| static DatetimeType instance(true); |
| return instance; |
| } |
| |
| /** |
| * @brief Get a reference to a singleton instance of this Type. |
| * |
| * @param nullable Whether to get the nullable version of this Type. |
| * @return A reference to the desired singleton instance of this Type. |
| **/ |
| static const DatetimeType& Instance(const bool nullable) { |
| if (nullable) { |
| return InstanceNullable(); |
| } else { |
| return InstanceNonNullable(); |
| } |
| } |
| |
| const Type& getNullableVersion() const override { |
| return InstanceNullable(); |
| } |
| |
| const Type& getNonNullableVersion() const override { |
| return InstanceNonNullable(); |
| } |
| |
| std::size_t estimateAverageByteLength() const override { |
| return sizeof(DatetimeLit); |
| } |
| |
| bool isCoercibleFrom(const Type &original_type) const override; |
| |
| bool isSafelyCoercibleFrom(const Type &original_type) const override; |
| |
| int getPrintWidth() const override { |
| return DatetimeLit::kIsoChars; |
| } |
| |
| std::string printValueToString(const TypedValue &value) const override; |
| |
| void printValueToFile(const TypedValue &value, |
| FILE *file, |
| const int padding = 0) const override; |
| |
| /** |
| * @note value_string is expected to be in (possibly extended) ISO-8601 |
| * format. Extended ISO-8601 format is one of the following: |
| * "YYYY-MM-DD", "YYYY-MM-DDThh:mm:ss", or |
| * "YYYY-MM-DDThh:mm:ss.uuuuuu". YYYY is an integer year (in extended |
| * format, this may be more than 4 digits and include an optional |
| * sign prefix +/-). MM is a 2-digit month in the range 01-12. DD is |
| * a 2-digit day of month in the appropriate range for the month (i.e. |
| * 28 days for February in non-leap years, 29 days for February in |
| * leap years, 30 days for April, June, September, and November, and |
| * 31 days for all other months). T is the separator character between |
| * the date and time portions of the string (strict ISO-8601 requires |
| * that the character be 'T', but we also allow lower-case 't' and a |
| * single blank space ' '). hh is a 2-digit hour in the range 00-23. |
| * mm is a 2-digit minute in the range 00-59. ss is a 2-digit second |
| * in the range 00-59. uuuuuu is a fractional subsecond part of up to |
| * six digits (i.e. microsecond resolution). Note that parsing will |
| * fail if there are any "extra" characters at the end of the string |
| * after a parsable ISO-8601 date/time. |
| **/ |
| bool parseValueFromString(const std::string &value_string, |
| TypedValue *value) const override; |
| |
| private: |
| explicit DatetimeType(const bool nullable) |
| : Type(Type::kOther, kDatetime, nullable, sizeof(DatetimeLit), sizeof(DatetimeLit)) { |
| } |
| |
| DISALLOW_COPY_AND_ASSIGN(DatetimeType); |
| }; |
| |
| /** @} */ |
| |
| } // namespace quickstep |
| |
| #endif // QUICKSTEP_TYPES_DATETIME_TYPE_HPP_ |