QueryExtendableInterface
interface QueryExtendableInterface
Interface for extendable query objects.
"Extenders" follow the "Decorator" OOP design pattern. That is, they wrap and "decorate" another object. In our case, they implement the same interface as select queries and wrap a select query, to which they delegate almost all operations. Subclasses of this class may implement additional methods or override existing methods as appropriate. Extenders may also wrap other extender objects, allowing for arbitrarily complex "enhanced" queries.
Hierarchy
- interface \QueryExtendableInterface
Expanded class hierarchy of QueryExtendableInterface
All classes that implement QueryExtendableInterface
Related topics
File
- includes/database/select.inc, line 20
Members
| Name | Modifiers | Type | Description |
|---|---|---|---|
| QueryExtendableInterface::extend | public | function | Enhance this object by wrapping it in an extender object. |
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https://api.drupal.org/api/drupal/includes!database!select.inc/interface/QueryExtendableInterface/7.x
