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mirror of synced 2024-12-14 15:16:04 +03:00

Merge branch 'master' of github.com:doctrine/orm-documentation

This commit is contained in:
Benjamin Eberlei 2011-08-06 19:13:01 +02:00
commit 60ed7769cd
6 changed files with 41 additions and 32 deletions

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@ -34,7 +34,7 @@ will even detect this match correctly when using SchemaTool update commands.
<?php
$conn = $em->getConnection();
$conn->getDatabasePlatform()->registerDoctrineTypeMapping('enum', 'varchar');
$conn->getDatabasePlatform()->registerDoctrineTypeMapping('enum', 'string');
In this case you have to ensure that each varchar field that is an enum in the
database only gets passed the allowed values. You can easily enforce this in your

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@ -401,7 +401,6 @@ Optional attributes:
- **nullable**: Determine if the related entity is required, or if
null is an allowed state for the relation. Defaults to true.
- **onDelete**: Cascade Action (Database-level)
- **onUpdate**: Cascade Action (Database-level)
- **columnDefinition**: DDL SQL snippet that starts after the column
name and specifies the complete (non-portable!) column definition.
This attribute allows to make use of advanced RMDBS features. Using

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@ -570,7 +570,9 @@ postUpdate, postRemove, postPersist
The three post events are called inside ``EntityManager#flush()``.
Changes in here are not relevant to the persistence in the
database, but you can use this events to
database, but you can use these events to alter non-persistable items,
like non-mapped fields, logging or even associated classes that are
directly mapped by Doctrine.
postLoad
~~~~~~~~

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@ -240,10 +240,10 @@ To simplify some of these efforts, we introduce what we call as
The Expr class
^^^^^^^^^^^^^^
To workaround most of the issues that ``add()`` method may cause,
To workaround some of the issues that ``add()`` method may cause,
Doctrine created a class that can be considered as a helper for
building queries. This class is called ``Expr``, which provides a
set of useful static methods to help building queries:
building expressions. This class is called ``Expr``, which provides a
set of useful methods to help build expressions:
.. code-block:: php
@ -251,13 +251,13 @@ set of useful static methods to help building queries:
// $qb instanceof QueryBuilder
// example8: QueryBuilder port of: "SELECT u FROM User u WHERE u.id = ? OR u.nickname LIKE ? ORDER BY u.surname DESC" using Expr class
$qb->add('select', $qb->expr()->select('u'))
->add('from', $qb->expr()->from('User', 'u'))
->add('where', $qb->expr()->orx(
$qb->add('select', new Expr\Select(array('u')))
->add('from', new Expr\From('User', 'u'))
->add('where', $qb->expr()->orX(
$qb->expr()->eq('u.id', '?1'),
$qb->expr()->like('u.nickname', '?2')
))
->add('orderBy', $qb->expr()->orderBy('u.surname', 'ASC'));
->add('orderBy', new Expr\OrderBy('u.name', 'ASC'));
Although it still sounds complex, the ability to programmatically
create conditions are the main feature of ``Expr``. Here it is a
@ -270,11 +270,11 @@ complete list of supported helper methods available:
{
/** Conditional objects **/
// Example - $qb->expr()->andx($cond1 [, $condN])->add(...)->...
public function andx($x = null); // Returns Expr\Andx instance
// Example - $qb->expr()->andX($cond1 [, $condN])->add(...)->...
public function andX($x = null); // Returns Expr\AndX instance
// Example - $qb->expr()->orx($cond1 [, $condN])->add(...)->...
public function orx($x = null); // Returns Expr\Orx instance
// Example - $qb->expr()->orX($cond1 [, $condN])->add(...)->...
public function orX($x = null); // Returns Expr\OrX instance
/** Comparison objects **/
@ -296,6 +296,12 @@ complete list of supported helper methods available:
// Example - $qb->expr()->gte('u.id', '?1') => u.id >= ?1
public function gte($x, $y); // Returns Expr\Comparison instance
// Example - $qb->expr()->isNull('u.id') => u.id IS NULL
public function isNull($x); // Returns string
// Example - $qb->expr()->isNotNull('u.id') => u.id IS NOT NULL
public function isNotNull($x); // Returns string
/** Arithmetic objects **/
@ -425,7 +431,7 @@ suggested standard way to build queries:
// example8: QueryBuilder port of: "SELECT u FROM User u WHERE u.id = ?1 OR u.nickname LIKE ?2 ORDER BY u.surname DESC" using QueryBuilder helper methods
$qb->select(array('u')) // string 'u' is converted to array internally
->from('User', 'u')
->where($qb->expr()->orx(
->where($qb->expr()->orX(
$qb->expr()->eq('u.id', '?1'),
$qb->expr()->like('u.nickname', '?2')
))
@ -469,11 +475,11 @@ Here is a complete list of helper methods available in
// NOTE: ->where() overrides all previously set conditions
//
// Example - $qb->where('u.firstName = ?1', $qb->expr()->eq('u.surname', '?2'))
// Example - $qb->where($qb->expr()->andx($qb->expr()->eq('u.firstName', '?1'), $qb->expr()->eq('u.surname', '?2')))
// Example - $qb->where($qb->expr()->andX($qb->expr()->eq('u.firstName', '?1'), $qb->expr()->eq('u.surname', '?2')))
// Example - $qb->where('u.firstName = ?1 AND u.surname = ?2')
public function where($where);
// Example - $qb->andWhere($qb->expr()->orx($qb->expr()->lte('u.age', 40), 'u.numChild = 0'))
// Example - $qb->andWhere($qb->expr()->orX($qb->expr()->lte('u.age', 40), 'u.numChild = 0'))
public function andWhere($where);
// Example - $qb->orWhere($qb->expr()->between('u.id', 1, 10));

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@ -246,8 +246,8 @@ the database permanently.
Notice how both sides of the bidirectional association are always
updated. Unidirectional associations are consequently simpler to
handle. Also note that if you type-hint your methods, i.e.
``setAddress(Address $address)``, then PHP does only allows null
handle. Also note that if you use type-hinting in your methods, i.e.
``setAddress(Address $address)``, PHP will only allow null
values if ``null`` is set as default value. Otherwise
setAddress(null) will fail for removing the association. If you
insist on type-hinting a typical way to deal with this is to
@ -279,8 +279,9 @@ entities that have been re-added to the collection.
Say you clear a collection of tags by calling
``$post->getTags()->clear();`` and then call
``$post->getTags()->add($tag)``. This will not recognize tag being
already added before and issue two database calls.
``$post->getTags()->add($tag)``. This will not recognize the tag having
already been added previously and will consequently issue two separate database
calls.
Association Management Methods
------------------------------
@ -380,9 +381,9 @@ as your preferences.
Synchronizing Bidirectional Collections
---------------------------------------
In the case of Many-To-Many associations you as the developer are
responsible to keep the collections on the owning and inverse side
up in sync, when you apply changes to them. Doctrine can only
In the case of Many-To-Many associations you as the developer have the
responsibility of keeping the collections on the owning and inverse side
in sync when you apply changes to them. Doctrine can only
guarantee a consistent state for the hydration, not for your client
code.
@ -468,7 +469,7 @@ code would fail if you removed the call to
cascade the persist operation to all nested entities that are new
as well.
More complicated is the deletion of all a users comments when he is
More complicated is the deletion of all of a user's comments when he is
removed from the system:
.. code-block:: php
@ -590,7 +591,7 @@ and StandingData:
}
}
Now two examples what happens when you remove the references:
Now two examples of what happens when you remove the references:
.. code-block:: php
@ -602,7 +603,8 @@ Now two examples what happens when you remove the references:
$em->flush();
In this case you have only changed the ``Contact`` entity but you removed
the references for standing data and one address reference. When flush is called
not only are the references removed but both the old standing data and the one
address entity are also deleted from the database.
In this case you have not only changed the ``Contact`` entity itself but
you have also removed the references for standing data and as well as one
address reference. When flush is called not only are the references removed
but both the old standing data and the one address entity are also deleted
from the database.

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@ -126,8 +126,8 @@ or collections of all the relations that haven't been explicitly
retrieved from the database yet.
To be able to use lazyload with collections, simple PHP arrays have
to be replaced by a generic collection interface Doctrine which
tries to act as array as much as possible using ArrayAccess,
to be replaced by a generic collection interface for Doctrine which
tries to act as as much like an array as possible by using ArrayAccess,
IteratorAggregate and Countable interfaces. The class is the most
simple implementation of this interface.