diff options
author | Devian <devianleong@gmail.com> | 2021-04-22 17:03:46 +0800 |
---|---|---|
committer | Devian <devianleong@gmail.com> | 2021-04-22 17:03:46 +0800 |
commit | 745cf2431a71d0e6c5f08f8605839279b2f7496e (patch) | |
tree | 11e4c7a19ac9f9efc1bb253b29b1fa488c34238e /vendor/doctrine/collections/docs/en/lazy-collections.rst |
Initiate commit
Diffstat (limited to 'vendor/doctrine/collections/docs/en/lazy-collections.rst')
-rw-r--r-- | vendor/doctrine/collections/docs/en/lazy-collections.rst | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/vendor/doctrine/collections/docs/en/lazy-collections.rst b/vendor/doctrine/collections/docs/en/lazy-collections.rst new file mode 100644 index 0000000..b9cafb6 --- /dev/null +++ b/vendor/doctrine/collections/docs/en/lazy-collections.rst @@ -0,0 +1,26 @@ +Lazy Collections +================ + +To create a lazy collection you can extend the +``Doctrine\Common\Collections\AbstractLazyCollection`` class +and define the ``doInitialize`` method. Here is an example where +we lazily query the database for a collection of user records: + +.. code-block:: php + use Doctrine\DBAL\Connection; + + class UsersLazyCollection extends AbstractLazyCollection + { + /** @var Connection */ + private $connection; + + public function __construct(Connection $connection) + { + $this->connection = $connection; + } + + protected function doInitialize() : void + { + $this->collection = $this->connection->fetchAll('SELECT * FROM users'); + } + } |