Package org.springframework.nativex.hint

Annotation Type TypeHint

@Repeatable(TypeHints.class)
@Retention(RUNTIME)
public @interface TypeHint

Configure reflection or *.class resources access on specified types. Class references via the types() member are the preferred form of use but sometimes due to accessibility restrictions the type names may need to be specified in the typeNames() member. See access() for inferred type of access and how to customize it with AccessBits. It can be important to limit it to only what is necessary for an optimal compiled image size.

Author:

Andy Clement, Sebastien Deleuze

See Also:

Manual configuration of reflection use in native images

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element	Description
TypeAccess[]	access	Defined the scope of the reflection entries or resource access to be configured.
FieldHint[]	fields	Specific fields information, useful to reduce the footprint impact of the generated configuration or to specify unsafe access.
MethodHint[]	methods	Specific method information for reflective invocation and metadata query, useful to reduce the footprint impact of the generated configuration.
MethodHint[]	queriedMethods	Specific method information for reflective metadata query, useful to reduce the footprint impact of the generated configuration.
String[]	typeNames	Alternative way to specify class references, should be used when type visibility prevents using Class references, or for nested types which should be specified using a $ separator (for example com.example.Foo$Bar).
Class<?>[]	types	Preferred (because typesafe) way to specify class references.

Element Detail

types

Class<?>[] types

Preferred (because typesafe) way to specify class references.

Returns:

the types

Default:

{}

typeNames

String[] typeNames

Alternative way to specify class references, should be used when type visibility prevents using Class references, or for nested types which should be specified using a $ separator (for example com.example.Foo$Bar).

Returns:

the type names

Default:

{}

access

TypeAccess[] access

Defined the scope of the reflection entries or resource access to be configured. Autodetected when not set, see TypeAccess.AUTO_DETECT related documentation.

Use empty array ({code {}}) for class access only (to allow for example Class.forName(String)) with non-constant argument (with constant argument no need it is inlined at compile time).

Returns:

the type accesses

Default:

{org.springframework.nativex.hint.TypeAccess.AUTO_DETECT}

methods

MethodHint[] methods

Specific method information for reflective invocation and metadata query, useful to reduce the footprint impact of the generated configuration.

Returns:

the methods information

Default:

{}

queriedMethods

MethodHint[] queriedMethods

Specific method information for reflective metadata query, useful to reduce the footprint impact of the generated configuration.

Returns:

the methods information

Default:

{}

fields

FieldHint[] fields

Specific fields information, useful to reduce the footprint impact of the generated configuration or to specify unsafe access.

Returns:

the fields information

Default:

{}