config.h

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//
// Created by Nico Schäfer on 3/22/17.
//
 
#ifndef JODA_CONFIG_H
 
#define JODA_CONFIG_H
 
#define JSON_CONTAINER_DEFAULT_SIZE (50 * 1024 * 1024)  // 50MB
#define JSON_STORAGE_DEFAULT_THREADS \
  std::max(1u, std::thread::hardware_concurrency() - 1)
 
#include <istream>
#include <string>
 
class config {
 public:
  // Indices
  static bool queryCache;
 
  // Bloom
  static bool bloom_enabled;
  static uint bloom_count;  // How many elements roughly do we expect to insert?
  static double
      bloom_prob;  // Maximum tolerable false positive probability? (0,1)
 
  // Directories
  static std::string home;
  static std::string tmpdir;
 
  // Storage
  static bool storeJson;
  static unsigned long long maxmemory;
  enum EvictionStrategies {
    NO_EVICTION,
    LARGEST,
    LRU,
    FIFO,
    DEPENDENCIES,
    EXPLORER
  };
  static EvictionStrategies evictionStrategy;  // Which eviction strategy to use
 
  // Benchmark
  static bool benchmark;
  static std::string benchfile;
 
  // Containers
  static size_t JSONContainerSize;
  static double chunk_size;
  static double text_binary_mod;
 
  // Multithreading
  static size_t storageRetrievalThreads;
  static size_t parsingThreads;
  static size_t readingThreads;
 
  // Parsing
  static size_t read_bulk_size;
  static std::string read_reader;
  static size_t parse_bulk_size;
 
  // Similarity
  static size_t
      sim_min_cont_size;  // Minimum container size (smaller will be merged)
  static double
      sim_min_similarity;  // Minimum similarity required to merge documents
  enum Sim_Measures { NO_SIMILARITY, PATH_JACCARD, ATTRIBUTE_JACCARD };
 
  static Sim_Measures sim_measure;  // Which similarity measure to use
  static bool sim_merge_on_parse;
 
  // History
  static std::string history_file;
  static bool persistent_history;
  static int history_size;
 
  // CLI
  static bool disable_interactive_CLI;
 
  // View
  static bool enable_views;
  static bool enable_views_vo;
};
 
inline std::istream& operator>>(std::istream& in, config::Sim_Measures& unit) {
  std::string token;
  in >> token;
  if (token == "NO_SIMILARITY")
    unit = config::NO_SIMILARITY;
  else if (token == "PATH_JACCARD")
    unit = config::PATH_JACCARD;
  else if (token == "ATTRIBUTE_JACCARD")
    unit = config::ATTRIBUTE_JACCARD;
  else
    in.setstate(std::ios_base::failbit);
  return in;
}
 
inline std::istream& operator>>(std::istream& in,
                                config::EvictionStrategies& eviction) {
  std::string token;
  in >> token;
  if (token == "NO_EVICTION")
    eviction = config::NO_EVICTION;
  else if (token == "LARGEST")
    eviction = config::LARGEST;
  else if (token == "LRU")
    eviction = config::LRU;
  else if (token == "FIFO")
    eviction = config::FIFO;
  else if (token == "DEPENDENCIES")
    eviction = config::DEPENDENCIES;
  else if (token == "EXPLORER")
    eviction = config::EXPLORER;
  else
    in.setstate(std::ios_base::failbit);
  return in;
}
 
#endif  // JODA_CONFIG_H