c++/src/Options.hh

/**
 * 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.
 */

#ifndef ORC_OPTIONS_HH
#define ORC_OPTIONS_HH

#include "orc/Int128.hh"
#include "orc/OrcFile.hh"
#include "orc/Reader.hh"

#include <limits>

namespace orc {

  enum ColumnSelection {
    ColumnSelection_NONE = 0,
    ColumnSelection_NAMES = 1,
    ColumnSelection_FIELD_IDS = 2,
    ColumnSelection_TYPE_IDS = 3,
  };

/**
 * ReaderOptions Implementation
 */
  struct ReaderOptionsPrivate {
    uint64_t tailLocation;
    std::ostream* errorStream;
    MemoryPool* memoryPool;
    std::string serializedTail;

    ReaderOptionsPrivate() {
      tailLocation = std::numeric_limits<uint64_t>::max();
      errorStream = &std::cerr;
      memoryPool = getDefaultPool();
    }
  };

  ReaderOptions::ReaderOptions():
    privateBits(std::unique_ptr<ReaderOptionsPrivate>
                (new ReaderOptionsPrivate())) {
    // PASS
  }

  ReaderOptions::ReaderOptions(const ReaderOptions& rhs):
    privateBits(std::unique_ptr<ReaderOptionsPrivate>
                (new ReaderOptionsPrivate(*(rhs.privateBits.get())))) {
    // PASS
  }

  ReaderOptions::ReaderOptions(ReaderOptions& rhs) {
    // swap privateBits with rhs
    privateBits.swap(rhs.privateBits);
  }

  ReaderOptions& ReaderOptions::operator=(const ReaderOptions& rhs) {
    if (this != &rhs) {
      privateBits.reset(new ReaderOptionsPrivate(*(rhs.privateBits.get())));
    }
    return *this;
  }

  ReaderOptions::~ReaderOptions() {
    // PASS
  }

  ReaderOptions& ReaderOptions::setMemoryPool(MemoryPool& pool) {
    privateBits->memoryPool = &pool;
    return *this;
  }

  MemoryPool* ReaderOptions::getMemoryPool() const{
    return privateBits->memoryPool;
  }

  ReaderOptions& ReaderOptions::setTailLocation(uint64_t offset) {
    privateBits->tailLocation = offset;
    return *this;
  }

  uint64_t ReaderOptions::getTailLocation() const {
    return privateBits->tailLocation;
  }

  ReaderOptions& ReaderOptions::setSerializedFileTail(const std::string& value
                                                      ) {
    privateBits->serializedTail = value;
    return *this;
  }

  std::string ReaderOptions::getSerializedFileTail() const {
    return privateBits->serializedTail;
  }

  ReaderOptions& ReaderOptions::setErrorStream(std::ostream& stream) {
    privateBits->errorStream = &stream;
    return *this;
  }

  std::ostream* ReaderOptions::getErrorStream() const {
    return privateBits->errorStream;
  }

/**
 * RowReaderOptions Implementation
 */

  struct RowReaderOptionsPrivate {
    ColumnSelection selection;
    std::list<uint64_t> includedColumnIndexes;
    std::list<std::string> includedColumnNames;
    uint64_t dataStart;
    uint64_t dataLength;
    bool throwOnHive11DecimalOverflow;
    int32_t forcedScaleOnHive11Decimal;
    bool enableLazyDecoding;

    RowReaderOptionsPrivate() {
      selection = ColumnSelection_NONE;
      dataStart = 0;
      dataLength = std::numeric_limits<uint64_t>::max();
      throwOnHive11DecimalOverflow = true;
      forcedScaleOnHive11Decimal = 6;
      enableLazyDecoding = false;
    }
  };

  RowReaderOptions::RowReaderOptions():
    privateBits(std::unique_ptr<RowReaderOptionsPrivate>
                (new RowReaderOptionsPrivate())) {
    // PASS
  }

  RowReaderOptions::RowReaderOptions(const RowReaderOptions& rhs):
    privateBits(std::unique_ptr<RowReaderOptionsPrivate>
                (new RowReaderOptionsPrivate(*(rhs.privateBits.get())))) {
    // PASS
  }

  RowReaderOptions::RowReaderOptions(RowReaderOptions& rhs) {
    // swap privateBits with rhs
    privateBits.swap(rhs.privateBits);
  }

  RowReaderOptions& RowReaderOptions::operator=(const RowReaderOptions& rhs) {
    if (this != &rhs) {
      privateBits.reset(new RowReaderOptionsPrivate(*(rhs.privateBits.get())));
    }
    return *this;
  }

  RowReaderOptions::~RowReaderOptions() {
    // PASS
  }

  RowReaderOptions& RowReaderOptions::include(const std::list<uint64_t>& include) {
    privateBits->selection = ColumnSelection_FIELD_IDS;
    privateBits->includedColumnIndexes.assign(include.begin(), include.end());
    privateBits->includedColumnNames.clear();
    return *this;
  }

  RowReaderOptions& RowReaderOptions::include(const std::list<std::string>& include) {
    privateBits->selection = ColumnSelection_NAMES;
    privateBits->includedColumnNames.assign(include.begin(), include.end());
    privateBits->includedColumnIndexes.clear();
    return *this;
  }

  RowReaderOptions& RowReaderOptions::includeTypes(const std::list<uint64_t>& types) {
    privateBits->selection = ColumnSelection_TYPE_IDS;
    privateBits->includedColumnIndexes.assign(types.begin(), types.end());
    privateBits->includedColumnNames.clear();
    return *this;
  }

  RowReaderOptions& RowReaderOptions::range(uint64_t offset, uint64_t length) {
    privateBits->dataStart = offset;
    privateBits->dataLength = length;
    return *this;
  }

  bool RowReaderOptions::getIndexesSet() const {
    return privateBits->selection == ColumnSelection_FIELD_IDS;
  }

  bool RowReaderOptions::getTypeIdsSet() const {
    return privateBits->selection == ColumnSelection_TYPE_IDS;
  }

  const std::list<uint64_t>& RowReaderOptions::getInclude() const {
    return privateBits->includedColumnIndexes;
  }

  bool RowReaderOptions::getNamesSet() const {
    return privateBits->selection == ColumnSelection_NAMES;
  }

  const std::list<std::string>& RowReaderOptions::getIncludeNames() const {
    return privateBits->includedColumnNames;
  }

  uint64_t RowReaderOptions::getOffset() const {
    return privateBits->dataStart;
  }

  uint64_t RowReaderOptions::getLength() const {
    return privateBits->dataLength;
  }

  RowReaderOptions& RowReaderOptions::throwOnHive11DecimalOverflow(bool shouldThrow){
    privateBits->throwOnHive11DecimalOverflow = shouldThrow;
    return *this;
  }

  bool RowReaderOptions::getThrowOnHive11DecimalOverflow() const {
    return privateBits->throwOnHive11DecimalOverflow;
  }

  RowReaderOptions& RowReaderOptions::forcedScaleOnHive11Decimal(int32_t forcedScale
                                                           ) {
    privateBits->forcedScaleOnHive11Decimal = forcedScale;
    return *this;
  }

  int32_t RowReaderOptions::getForcedScaleOnHive11Decimal() const {
    return privateBits->forcedScaleOnHive11Decimal;
  }

  bool RowReaderOptions::getEnableLazyDecoding() const {
    return privateBits->enableLazyDecoding;
  }

  RowReaderOptions& RowReaderOptions::setEnableLazyDecoding(bool enable) {
    privateBits->enableLazyDecoding = enable;
    return *this;
  }
}

#endif