You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
70 lines
1.5 KiB
70 lines
1.5 KiB
#include "leveldb/db.h"
|
|
#include <iostream>
|
|
|
|
using namespace std;
|
|
using namespace leveldb;
|
|
|
|
int test1() {
|
|
DB* db = nullptr;
|
|
Options op;
|
|
op.create_if_missing = true;
|
|
Status status = DB::Open(op, "testdb1", &db);
|
|
assert(status.ok());
|
|
db->Put(WriteOptions(), "001", "leveldb");
|
|
string s;
|
|
db->Get(ReadOptions(), "001", &s);
|
|
cout<<s<<endl;
|
|
cout << s.size() << endl;
|
|
|
|
db->Put(WriteOptions(), "002", "world");
|
|
string s1;
|
|
db->Delete(WriteOptions(), "002"); // sc: {0, 33}
|
|
db->Get(ReadOptions(), "002", &s1);
|
|
cout << s1.size() << endl;
|
|
cout<<s1<<endl;
|
|
|
|
delete db;
|
|
return 0;
|
|
}
|
|
|
|
|
|
int test2() {
|
|
DB* db = nullptr;
|
|
Options op;
|
|
op.create_if_missing = true;
|
|
Status status = DB::Open(op, "testdb2", &db);
|
|
assert(status.ok());
|
|
|
|
const std::string value_prefix = "value_";
|
|
const size_t loop_times = 1000;
|
|
for (auto i = 0; i < loop_times; i++) {
|
|
auto key = std::to_string(i);
|
|
auto value = value_prefix + key;
|
|
db->Put(WriteOptions(), key, value);
|
|
string s;
|
|
db->Get(ReadOptions(), key, &s);
|
|
cout << s << " | " << s.size() << endl;
|
|
|
|
}
|
|
|
|
cout << endl << "all put are done" << endl << endl;
|
|
|
|
for (auto i = 0; i < loop_times; i++) {
|
|
auto key = std::to_string(i);
|
|
auto value = value_prefix + key;
|
|
|
|
// db->Put(WriteOptions(), key, value+"_");
|
|
string s1;
|
|
db->Delete(WriteOptions(), key); // sc: {0, 33}
|
|
db->Get(ReadOptions(), key, &s1);
|
|
cout << s1 << " | " << s1.size() << " | " << i << endl;
|
|
}
|
|
|
|
delete db;
|
|
return 0;
|
|
}
|
|
|
|
|
|
int main() {
|
|
test2();
|
|
}
|