transform_util.h

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/*
 * 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.
 */
 
#pragma once
 
 
#include <cstdint>
#include <string>
 
#include "iceberg/iceberg_export.h"
#include "iceberg/result.h"
 
namespace iceberg::internal {
 
inline Status ValidateBucketTransformParameter(int32_t num_buckets) {
  if (num_buckets <= 0) {
    return InvalidArgument("Number of buckets must be positive, got {}", num_buckets);
  }
  return {};
}
 
inline Status ValidateTruncateTransformParameter(int32_t width) {
  if (width <= 0) {
    return InvalidArgument("Width must be positive, got {}", width);
  }
  return {};
}
 
}  // namespace iceberg::internal
 
namespace iceberg {
 
class ICEBERG_EXPORT TransformUtil {
 public:
  static std::string HumanYear(int32_t year);
 
  static std::string HumanMonth(int32_t month);
 
  static std::string HumanDay(int32_t day_ordinal);
 
  static std::string HumanHour(int32_t hour_ordinal);
 
  static std::string HumanTime(int64_t micros_from_midnight);
 
  static std::string HumanTimestamp(int64_t timestamp_micros);
 
  static std::string HumanTimestampNs(int64_t timestamp_nanos);
 
  static std::string HumanTimestampWithZone(int64_t timestamp_micros);
 
  static std::string HumanTimestampNsWithZone(int64_t timestamp_nanos);
};
 
}  // namespace iceberg