RetailCRM-Mirror/doctrine2
1
0
Fork 0
mirror of synced 2025-01-29 19:41:45 +03:00
Code Issues Projects Releases Wiki Activity

Merge pull request #69 from keymaster/patch-1

Browse Source 
Clarify the performance warning.
This commit is contained in:
Guilherme Blanco 2011-12-21 06:56:17 -08:00
commit d23b3bb056
1 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
en/reference/inheritance-mapping.rst
View File

@ -140,10 +140,10 @@ relationships involving types that employ this mapping strategy are
very performant.
There is a general performance consideration with Single Table
Inheritance: If you use a STI entity as a many-to-one or one-to-one
entity you should never use one of the classes at the upper levels
of the inheritance hierachy as "targetEntity", only those that have
no subclasses. Otherwise Doctrine *CANNOT* create proxy instances
Inheritance: If the target-entity of a many-to-one or one-to-one
association is an STI entity, it is preferable for performance reasons that it
be a leaf entity in the inheritance heirarchy, (ie. have no subclasses).
Otherwise Doctrine *CANNOT* create proxy instances
of this entity and will *ALWAYS* load the entity eagerly.
SQL Schema considerations
@ -243,10 +243,10 @@ themselves on access of any subtype fields, so accessing fields of
subtypes after such a query is not safe.
There is a general performance consideration with Class Table
Inheritance: If you use a CTI entity as a many-to-one or one-to-one
entity you should never use one of the classes at the upper levels
of the inheritance hierachy as "targetEntity", only those that have
no subclasses. Otherwise Doctrine *CANNOT* create proxy instances
Inheritance: If the target-entity of a many-to-one or one-to-one
association is a CTI entity, it is preferable for performance reasons that it
be a leaf entity in the inheritance heirarchy, (ie. have no subclasses).
Otherwise Doctrine *CANNOT* create proxy instances
of this entity and will *ALWAYS* load the entity eagerly.
SQL Schema considerations