kvdb example

kvdb_example.cpp

#include "kvdb.h"
#include <cstring>

typedef struct TestStr {
	int id = 0;
}TestStr;

int main() {
	std::string fileName = "d://test_storage.dat";
  
	// create empty storage file
	std::unordered_map<int, TestStr> test;
	kvdb::KvFile<int, TestStr>::create(fileName, test);

	// open storage file
	kvdb::KvFile<int, TestStr> testDb;
	if (testDb.open(fileName)) {
		// save structure
		testDb.put(3, TestStr());

		// load structure
		int key = 3;
		std::shared_ptr<TestStr> tmp = testDb[key];
		if (tmp == nullptr) {
			printf("key %d -> not found", key);
		} else {
			printf("key %d -> %d", key, tmp->id);
		}
    
	} else {
		printf("Unable to open file\n");
	}
  
	return 0;
}