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/*************************************************************************************************
* Example for basic usage of the polymorphic database
*
* Copyright 2020 Google LLC
* Licensed 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
* https://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 "tkrzw_dbm_poly.h"
// Main routine.
int main(int argc, char** argv) {
// All symbols of Tkrzw are under the namespace "tkrzw".
using namespace tkrzw;
// Creates the database manager.
PolyDBM dbm;
// Opens a new database.
const std::map<std::string, std::string> open_params = {
{"update_mode", "UPDATE_APPENDING"},
{"max_page_size", "1000"}, {"max_branches", "128"},
{"key_comparator", "DecimalKeyComparator"},
};
dbm.OpenAdvanced("casket.tkt", true, File::OPEN_TRUNCATE, open_params).OrDie();
// Stores records.
dbm.Set("1", "one").OrDie();
dbm.Set("2", "two").OrDie();
dbm.Set("3", "three").OrDie();
// Rebuild the database.
const std::map<std::string, std::string> rebuild_params = {
{"update_mode", "UPDATE_IN_PLACE"},
{"max_page_size", "4080"}, {"max_branches", "256"},
};
dbm.RebuildAdvanced(rebuild_params).OrDie();
// Retrieves records.
std::cout << dbm.GetSimple("1", "*") << std::endl;
std::cout << dbm.GetSimple("2", "*") << std::endl;
std::cout << dbm.GetSimple("3", "*") << std::endl;
std::cout << dbm.GetSimple("4", "*") << std::endl;
// Closes the database.
dbm.Close().OrDie();
return 0;
}
// END OF FILE
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