@Retention(value=RUNTIME) @Target(value={TYPE,METHOD,FIELD}) @Documented public @interface Order
@Order defines the sort order for an annotated component.
The value() is optional and represents an order value as defined in the
Ordered interface. Lower values have higher priority. The default value is
Ordered.LOWEST_PRECEDENCE, indicating lowest priority (losing to any other
specified order value).
NOTE: Since Spring 4.0, annotation-based ordering is supported for many
kinds of components in Spring, even for collection injection where the order values
of the target components are taken into account (either from their target class or
from their @Bean method). While such order values may influence priorities
at injection points, please be aware that they do not influence singleton startup
order which is an orthogonal concern determined by dependency relationships and
@DependsOn declarations (influencing a runtime-determined dependency graph).
Since Spring 4.1, the standard Priority annotation
can be used as a drop-in replacement for this annotation in ordering scenarios.
Note that @Priority may have additional semantics when a single element
has to be picked (see AnnotationAwareOrderComparator.getPriority(java.lang.Object)).
Alternatively, order values may also be determined on a per-instance basis
through the Ordered interface, allowing for configuration-determined
instance values instead of hard-coded values attached to a particular class.
Consult the javadoc for OrderComparator for details on the sort semantics for non-ordered objects.
Ordered,
AnnotationAwareOrderComparator,
OrderUtils,
Priority| Modifier and Type | Optional Element and Description |
|---|---|
int |
value
The order value.
|
public abstract int value
Default is Ordered.LOWEST_PRECEDENCE.
Ordered.getOrder()