org.grouplens.grapht.reflect

Interface InjectionPoint

All Superinterfaces:

Serializable

All Known Implementing Classes:

ConstructorParameterInjectionPoint, FieldInjectionPoint, NoArgumentInjectionPoint, SetterInjectionPoint, SimpleInjectionPoint

public interface InjectionPoint
extends Serializable

InjectionPoint represents a point of injection for an instantiable type. Examples include a constructor parameter, a setter method, or a field.

Author:

GroupLens Research

Method Summary

Modifier and Type	Method and Description
<A extends Annotation> A	getAttribute(Class<A> atype) Return the attribute of type A that is applied to the injection point.
Collection<Annotation>	getAttributes()
Class<?>	getErasedType()
Member	getMember() Return the Member that produced this injection point.
Annotation	getQualifier() Return the qualifier annotation added to the injection point.
Type	getType() Return the type required to satisfy the injection point.
boolean	isNullable()

Method Detail

getType

Type getType()

Return the type required to satisfy the injection point.

Returns:

The type of the injection point

getErasedType

Class<?> getErasedType()

Returns:

Return the erased type of getType()

getQualifier

@Nullable
Annotation getQualifier()

Return the qualifier annotation added to the injection point. The returned annotation's type will have been annotated with Qualifier. If the injection point is not qualified, this will return null.

Returns:

Any qualifier applied to the injection point

getAttribute

@Nullable
<A extends Annotation> A getAttribute(Class<A> atype)

Return the attribute of type A that is applied to the injection point. If the injection point does not have an attribute of type A, then null is returned.

Parameters:

atype - Attribute annotation type. It must be annotated with Attribute.

Returns:

The instance of A applied to the injection point, or null

Throws:

NullPointerException - if atype is null

getAttributes

@Nonnull
Collection<Annotation> getAttributes()

Returns:

Immutable collection of attribute annotations (does not include the qualifier)

getMember

@Nullable
Member getMember()

Return the Member that produced this injection point. Synthetic injection points can have a null member.

Returns:

The Member that produces this injection point

isNullable

boolean isNullable()

Returns:

True if this injection point accepts null values