// file : pgsql/truncation/driver.cxx // copyright : Copyright (c) 2009-2015 Code Synthesis Tools CC // license : GNU GPL v2; see accompanying LICENSE file // Test insufficient buffer/truncation handling. // #include <memory> // std::auto_ptr #include <cassert> #include <iostream> #include <odb/pgsql/database.hxx> #include <odb/pgsql/transaction.hxx> #include <common/common.hxx> #include "test.hxx" #include "test-odb.hxx" using namespace std; namespace pgsql = odb::pgsql; using namespace pgsql; int main (int argc, char* argv[]) { // The default pre-allocated buffer is 512 bytes long. // string long_str (640, 'c'); // This will get the buffer to 1024 string longer_str (1025, 'b'); try { // Test basic operations. // { auto_ptr<database> db (create_specific_database<database> (argc, argv)); // Run persist/load so that the initial bindings are established // (version == 0). // { object1 o (1); o.str_ = "test string"; transaction t (db->begin ()); db->persist (o); db->load (1, o); t.commit (); } { object2 o (2); o.str_ = "test string"; transaction t (db->begin ()); db->persist (o); db->load (2, o); t.commit (); } // Store/load the long string which should trigger buffer growth. // { object1 o (3); o.str_ = long_str; transaction t (db->begin ()); db->persist (o); t.commit (); } { transaction t (db->begin ()); auto_ptr<object2> o (db->load<object2> (3)); assert (o->str_ == long_str); t.commit (); } // Store/load longer string. // { object1 o (3); o.str_ = longer_str; transaction t (db->begin ()); db->update (o); t.commit (); } { transaction t (db->begin ()); auto_ptr<object2> o (db->load<object2> (3)); assert (o->str_ == longer_str); t.commit (); } } // Test query. // { typedef pgsql::query<object1> query; typedef odb::result<object1> result; auto_ptr<database> db (create_specific_database<database> (argc, argv)); // Run persist/query so that the initial bindings are established // (version == 0). // { object1 o (20); o.str_ = "test string"; transaction t (db->begin ()); db->persist (o); o.id_++; db->persist (o); o.id_++; db->persist (o); result r (db->query<object1> (query::id == 20)); assert (r.begin ()->id_ == 20); t.commit (); } // Test buffer growth with cached result. // { object1 o; transaction t (db->begin ()); result r (db->query<object1> (query::id >= 20)); result::iterator i (r.begin ()); o.id_ = i->id_; o.str_ = long_str; // This forces buffer growth in the middle of result iteration. // db->update (o); ++i; assert (i->str_ == "test string"); o.id_ = i->id_; o.str_ = longer_str; db->update (o); ++i; assert (i->str_ == "test string"); t.commit (); } } } catch (const odb::exception& e) { cerr << e.what () << endl; return 1; } }