C++ Result::getLongLong方法代码示例

void test_a_db_with_a_connection_with_tables::can_update_integer_attribute_bound_value()
{
	// insert new object
	DB::Statement statement = connection->prepare(
				"insert into object default values");
	CPPUNIT_ASSERT(statement.isValid());
	CPPUNIT_ASSERT(connection->execute(statement));
	long long object_id = connection->lastInsertRowId();
	CPPUNIT_ASSERT(object_id != 0);

	// insert integer attribute
	statement = connection->prepare(
				"insert into attribute_integer (value,type,object_id) values (%lld,%d,%lld)",
				1111,
				1235,
				object_id);
	CPPUNIT_ASSERT(statement.isValid());
	CPPUNIT_ASSERT(connection->execute(statement));

	// prepare update integer attribute statement
	statement = connection->prepare(
				"update attribute_integer set value=? where type=%d and object_id=%lld",
				1235,
				object_id);
	CPPUNIT_ASSERT(statement.isValid());

	// bind long long value to the parameter an update the record
	CPPUNIT_ASSERT(DB::Bindings(statement).bindInt64(1,2222));
	CPPUNIT_ASSERT(connection->execute(statement));

	// Retrieve the value from the record
	DB::Statement retrieveStmt = connection->prepare(
				"select value from attribute_integer as t where t.type=%d and t.object_id=%lld",
				1235,
				object_id);
	CPPUNIT_ASSERT(retrieveStmt.isValid());
	DB::Result result = connection->perform(retrieveStmt);
	CPPUNIT_ASSERT_EQUAL(result.getLongLong(1), (long long)2222);

	// verify that binding to a parameter before resetting the statement will fail.
	DB::LogErrorHandler eh = DB::setLogErrorHandler(dummy_print);
	DB::Bindings bindings(statement);
	CPPUNIT_ASSERT(!bindings.bindInt(1,3333));
	DB::setLogErrorHandler(eh);

	// reset statement and bind another value to the statement
	CPPUNIT_ASSERT(bindings.reset());
	CPPUNIT_ASSERT(bindings.bindInt(1,3333));

	// perform the update statement again with the newly bound value
	CPPUNIT_ASSERT(connection->execute(statement));

	// reset the retrieve statement and perform it again to get the latest value of the integer attribute
	CPPUNIT_ASSERT(retrieveStmt.reset());
	result = connection->perform(retrieveStmt);
	CPPUNIT_ASSERT(result.isValid());
	CPPUNIT_ASSERT_EQUAL(result.getLongLong(1), (long long)3333);
}

bool DBObject::find(long long objectId)
{
	MutexLocker lock(_mutex);

	if (_connection == NULL)
	{
		ERROR_MSG("Object is not connected to the database.");
		return false;
	}

	if (objectId == 0) {
		ERROR_MSG("Invalid object_id 0 passed to find");
		return false;
	}

	// find the object in the database for the given object_id
	DB::Statement statement = _connection->prepare(
				"select id from object where id=%lld",
				objectId);
	if (!statement.isValid()) {
		ERROR_MSG("Preparing object selection statement failed");
		return false;
	}

	DB::Result result = _connection->perform(statement);
	if (result.getLongLong(1) != objectId) {
		ERROR_MSG("Failed to find object with id %lld",objectId);
		return false;
	}

	_objectId = objectId;
	return true;
}

void test_a_db_with_a_connection_with_tables::can_update_text_attribute_bound_value()
{
	can_insert_records();

	// query all objects
	DB::Statement statement = connection->prepare("select id from object");
	CPPUNIT_ASSERT(statement.isValid());
	DB::Result result = connection->perform(statement);
	CPPUNIT_ASSERT(result.isValid());

	long long object_id = result.getLongLong(1); // field indices start at 1

	statement = connection->prepare(
				"update attribute_text set value=? where type=%d and object_id=%lld",
				1234,
				object_id);
	CPPUNIT_ASSERT(statement.isValid());

	std::string msg("testing quote ' and accents é.");

	CPPUNIT_ASSERT(DB::Bindings(statement).bindText(1,msg.c_str(),msg.size(),NULL));
	CPPUNIT_ASSERT(connection->execute(statement));

	statement = connection->prepare(
				"select value from attribute_text as t where t.type=%d and t.object_id=%lld",
				1234,
				object_id);
	result = connection->perform(statement);
	CPPUNIT_ASSERT_EQUAL(std::string(result.getString(1)), msg);
}

void test_a_db_with_a_connection_with_tables::can_update_text_attribute()
{
	can_insert_records();

	// query all objects
	DB::Statement statement = connection->prepare("select id from object");
	CPPUNIT_ASSERT(statement.isValid());
	DB::Result result = connection->perform(statement);
	CPPUNIT_ASSERT(result.isValid());

	long long object_id = result.getLongLong(1); // field indices start at 1

	statement = connection->prepare(
				"update attribute_text set value='test test test' where type=%d and object_id=%lld",
				1234,
				object_id);
	CPPUNIT_ASSERT(statement.isValid());
	CPPUNIT_ASSERT(connection->execute(statement));
}

void test_a_db_with_a_connection_with_tables::can_cascade_delete_objects_and_attributes()
{
	can_insert_records();

	DB::Statement statement = connection->prepare("select id from object");
	DB::Result result = connection->perform(statement);
	CPPUNIT_ASSERT(result.isValid());

	long long object_id = result.getLongLong(1);

	statement = connection->prepare("delete from object where id=%lld",object_id);
	CPPUNIT_ASSERT(connection->execute(statement));

	statement = connection->prepare("select * from attribute_text where object_id=%lld",object_id);
	result = connection->perform(statement);

	// Check cascade delete was successful.
	CPPUNIT_ASSERT(!result.isValid());
}