Function main

examples/cpp_api/query_condition_sparse.cc:227–292

}

int main() {
  // Create the context.
  Context ctx;
  VFS vfs(ctx);
  if (vfs.is_dir(array_name))
    vfs.remove_dir(array_name);

  // Create and write data to the array.
  create_array(ctx);
  write_array(ctx);

  // Printing the entire array.
  std::cout << "Printing the entire array...\n";
  read_array_with_qc(ctx, std::nullopt);
  std::cout << "\n";

  // Execute a read query with query condition `a = null`.
  std::cout << "Running read query with query condition `a = null`...\n";
  QueryCondition qc(ctx);
  qc.init("a", nullptr, 0, TILEDB_EQ);
  read_array_with_qc(ctx, qc);
  std::cout << "\n";

  // Execute a read query with query condition `b < "eve"`.
  std::cout << "Running read query with query condition `b < \"eve\"`...\n";
  QueryCondition qc1(ctx);
  qc1.init("b", "eve", TILEDB_LT);
  read_array_with_qc(ctx, qc1);
  std::cout << "\n";

  // Execute a read query with query condition `c >= 1`.
  std::cout << "Running read query with query condition `c >= 1`...\n";
  QueryCondition qc2(ctx);
  int val = 1;
  qc2.init("c", &val, sizeof(int), TILEDB_GE);
  read_array_with_qc(ctx, qc2);
  std::cout << "\n";

  // Execute a read query with query condition `3.0f <= d AND d <= 4.0f`.
  std::cout << "Running read query with query condition `3.0f <= d AND d <= "
               "4.0f`...\n";
  QueryCondition qc3(ctx);
  float arr[] = {3.0f, 4.0f};
  qc3.init("d", &arr[0], sizeof(float), TILEDB_GE);
  QueryCondition qc4(ctx);
  qc4.init("d", &arr[1], sizeof(float), TILEDB_LE);
  QueryCondition qc5 = qc3.combine(qc4, TILEDB_AND);
  read_array_with_qc(ctx, qc5);
  std::cout << "\n";

  // Execute a read query with query condition `3.0f <= d AND d <= 4.0f AND a !=
  // null AND b < \"eve\"`.
  std::cout << "Running read query with query condition `3.0f <= d AND d <= "
               "4.0f AND a != null AND b < \"eve\"`...\n";
  QueryCondition qc6(ctx);
  qc6.init("a", nullptr, 0, TILEDB_NE);
  qc = qc5.combine(qc6, TILEDB_AND);
  qc = qc.combine(qc1, TILEDB_AND);