14.18. Components

Components can be used similarly to the simple value types that are used in HQL queries. They can appear in the select clause as follows:

select p.name from Person p

select p.name from Person p

Copy to Clipboard

Toggle word wrap

select p.name.first from Person p

select p.name.first from Person p

Copy to Clipboard

Toggle word wrap

where the Person's name property is a component. Components can also be used in the where clause:

from Person p where p.name = :name

from Person p where p.name = :name

Copy to Clipboard

Toggle word wrap

from Person p where p.name.first = :firstName

from Person p where p.name.first = :firstName

Copy to Clipboard

Toggle word wrap

Components can also be used in the order by clause:

from Person p order by p.name

from Person p order by p.name

Copy to Clipboard

Toggle word wrap

from Person p order by p.name.first

from Person p order by p.name.first

Copy to Clipboard

Toggle word wrap

Another common use of components is detailed in the "Row Value Constrictor Syntax" section.

Voltar ao topo