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PHP Класс lithium\data\source\Result

Just a forward-only cursor is required, not necessarily a rolling cursor. Not all data sources can support rolling cursors, that's why forward-only cursors have been chosen here as the least common denominator for the abstraction. Rolling cursors cannot be emulated from an underlying forward-only cursor in a (memory) efficient way. Result does not try to and will deliberately not keep already yielded results in an internal cache. To allow full (back and forth) iteration over the yielded results, a wrapping class (i.e. Collection) may keep such a cache while draining the Result from outside. Because of these characteristics an instance of Result may be used only once. After draining the result it cannot be rewinded or reset. This is similar to the behavior of the NoRewindIterator, where rewind calls have no effect. The first result will be eager loaded from the cursor, as it is expected the result will be used at least once. The class also provides a mechanism which buffers results when peeking for next ones. The buffered results will then be used when continuing to iterate over the result object. Показать файл Открыть проект Примеры использования класса

Защищенные свойства (Protected)

Свойство	Тип	Описание
$_autoConfig	array	Autoconfig.
$_buffer	array	Buffer results of query before returning / iterating. Allows consumers to 'peek' at results.
$_current	mixed	Contains the current element of the result set.
$_iterator	integer	The current position of the iterator.
$_key	integer | null	Key of the current result.
$_resource	object | resource | null	The bound resource.
$_valid	boolean	Indicates whether the current position is valid or not.

Открытые методы

Метод	Описание
__destruct ( ) : void	Destructor.
close ( ) : void	Close the resource.
current ( ) : array	Contains the current result.
key ( ) : integer | null	Returns the current key position on the result.
next ( ) : mixed	Fetches the next element from the resource.
peek ( ) : mixed	Peeks at the next element in the resource without advancing Result's cursor.
resource ( ) : object | resource	Returns the used resource.
rewind ( ) : void	Noop to fulfill the Iterator interface. Result is forward-only.
valid ( ) : boolean	Checks if current position is valid.

Защищенные методы

Метод	Описание
_fetch ( ) : array | boolean | null	Fetches the next result from the resource.
_init ( ) : void	Initializer. Eager loads the first result.

Описание методов

Описание свойств