cpp/src/gandiva/function_registry_datetime.cc

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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.

#include "gandiva/function_registry_datetime.h"

#include "gandiva/function_registry_common.h"

namespace gandiva {

#define DATE_EXTRACTION_TRUNCATION_FNS(INNER, name)                              \
  DATE_TYPES(INNER, name##Millennium, {}), DATE_TYPES(INNER, name##Century, {}), \
      DATE_TYPES(INNER, name##Decade, {}), DATE_TYPES(INNER, name##Year, {}),    \
      DATE_TYPES(INNER, name##Quarter, {}), DATE_TYPES(INNER, name##Month, {}),  \
      DATE_TYPES(INNER, name##Week, {}), DATE_TYPES(INNER, name##Day, {}),       \
      DATE_TYPES(INNER, name##Hour, {}), DATE_TYPES(INNER, name##Minute, {}),    \
      DATE_TYPES(INNER, name##Second, {})

#define TIME_EXTRACTION_FNS(name)                              \
  TIME_TYPES(EXTRACT_SAFE_NULL_IF_NULL, name##Hour, {}),       \
      TIME_TYPES(EXTRACT_SAFE_NULL_IF_NULL, name##Minute, {}), \
      TIME_TYPES(EXTRACT_SAFE_NULL_IF_NULL, name##Second, {})

std::vector<NativeFunction> GetDateTimeFunctionRegistry() {
  static std::vector<NativeFunction> date_time_fn_registry_ = {
      DATE_EXTRACTION_TRUNCATION_FNS(EXTRACT_SAFE_NULL_IF_NULL, extract),
      DATE_EXTRACTION_TRUNCATION_FNS(TRUNCATE_SAFE_NULL_IF_NULL, date_trunc_),

      DATE_TYPES(EXTRACT_SAFE_NULL_IF_NULL, extractDoy, {}),
      DATE_TYPES(EXTRACT_SAFE_NULL_IF_NULL, extractDow, {}),
      DATE_TYPES(EXTRACT_SAFE_NULL_IF_NULL, extractEpoch, {}),

      TIME_EXTRACTION_FNS(extract),

      NativeFunction("castDATE", {}, DataTypeVector{utf8()}, date64(), kResultNullIfNull,
                     "castDATE_utf8",
                     NativeFunction::kNeedsContext | NativeFunction::kCanReturnErrors),

      NativeFunction("castTIMESTAMP", {}, DataTypeVector{utf8()}, timestamp(),
                     kResultNullIfNull, "castTIMESTAMP_utf8",
                     NativeFunction::kNeedsContext | NativeFunction::kCanReturnErrors),

      NativeFunction("castVARCHAR", {}, DataTypeVector{timestamp(), int64()}, utf8(),
                     kResultNullIfNull, "castVARCHAR_timestamp_int64",
                     NativeFunction::kNeedsContext),

      NativeFunction("to_date", {}, DataTypeVector{utf8(), utf8()}, date64(),
                     kResultNullInternal, "gdv_fn_to_date_utf8_utf8",
                     NativeFunction::kNeedsContext |
                         NativeFunction::kNeedsFunctionHolder |
                         NativeFunction::kCanReturnErrors),

      NativeFunction("to_date", {}, DataTypeVector{utf8(), utf8(), int32()}, date64(),
                     kResultNullInternal, "gdv_fn_to_date_utf8_utf8_int32",
                     NativeFunction::kNeedsContext |
                         NativeFunction::kNeedsFunctionHolder |
                         NativeFunction::kCanReturnErrors),
      NativeFunction("castTIMESTAMP", {}, DataTypeVector{date64()}, timestamp(),
                     kResultNullIfNull, "castTIMESTAMP_date64"),

      NativeFunction("castTIMESTAMP", {}, DataTypeVector{int64()}, timestamp(),
                     kResultNullIfNull, "castTIMESTAMP_int64"),

      NativeFunction("castDATE", {"to_date"}, DataTypeVector{timestamp()}, date64(),
                     kResultNullIfNull, "castDATE_timestamp"),

      NativeFunction("castBIGINT", {}, DataTypeVector{day_time_interval()}, int64(),
                     kResultNullIfNull, "castBIGINT_daytimeinterval"),

      NativeFunction("extractDay", {}, DataTypeVector{day_time_interval()}, int64(),
                     kResultNullIfNull, "extractDay_daytimeinterval"),
  };

  return date_time_fn_registry_;
}

}  // namespace gandiva