标签：new ios write rom create schema ret sql creat
| #include <iostream> | |
| #include <odb/database.hxx> | |
| #include <odb/transaction.hxx> | |
| #include <odb/schema-catalog.hxx> | |
| #include <odb/sqlite/database.hxx> | |
| #include "person.hpp" | |
| #include "person-odb.hxx" | |
| using namespace std; | |
| using namespace odb::core; | |
| void create_person_table(shared_ptr<odb::sqlite::database> db) | |
| { | |
| unsigned long john_id, jane_id, joe_id; | |
| // Create a few persistent person objects. | |
| // | |
| person john ("John", "Doe", 33); | |
| person jane ("Jane", "Doe", 32); | |
| person joe ("Joe", "Dirt", 30); | |
| { | |
| transaction t (db->begin()); | |
| // Make objects persistent and save their ids for later use. | |
| // | |
| john_id = db->persist (john); | |
| jane_id = db->persist (jane); | |
| joe_id = db->persist (joe); | |
| t.commit (); | |
| } | |
| } | |
| void query_person(shared_ptr<odb::sqlite::database> db) | |
| { | |
| typedef odb::query<person> query; | |
| transaction t (db->begin()); | |
| auto r (db->query<person>(query::age > 30)); | |
| for (auto i:r){ | |
| cout << "Hello, " << i.first() << "!" << endl; | |
| } | |
| t.commit (); | |
| } | |
| shared_ptr<odb::sqlite::database> open_database(string name, bool create=false) | |
| { | |
| int flags = SQLITE_OPEN_READWRITE; | |
| if (create) flags |= SQLITE_OPEN_CREATE; | |
| shared_ptr<odb::sqlite::database> db(new odb::sqlite::database(name, flags) ); | |
| transaction t (db->begin()); | |
| if (create){ | |
| odb::schema_catalog::create_schema(*db); | |
| } | |
| t.commit (); | |
| return db; | |
| } | |
| shared_ptr<odb::sqlite::database> open_create_database(string name) | |
| { | |
| std::shared_ptr<odb::sqlite::database> db; | |
| try{ | |
| db = open_database(name); | |
| }catch (const odb::exception& e){ | |
| db = open_database(name,true); | |
| } | |
| return db; | |
| } | |
| int main (int argc, char* argv[]) | |
| { | |
| try{ | |
| auto db = open_create_database("test.db"); | |
| create_person_table(db); | |
| query_person(db); | |
| } | |
| catch (const odb::exception& e){ | |
| cerr << e.what () << endl; | |
| return 1; | |
| } | |
| return 0; | |
| } |
from:https://github.com/joseprous/odb-sqlite-test/blob/master/driver.cpp
标签：new ios write rom create schema ret sql creat
原文地址：http://www.cnblogs.com/lidabo/p/7286426.html
