net.bytebuddy.implementation.bind.annotation

Annotation Type FieldValue

@Documented
 @Retention(value=RUNTIME)
 @Target(value=PARAMETER)
public @interface FieldValue

Assigns the value of a field of the instrumented type to the annotated parameter. For a binding to be valid, the instrumented type must be able to access a field of the given name. Also, the parameter's type must be assignable to the given field. For attempting a type casting, the RuntimeType annotation can be applied to the parameter.

Setting value() is optional. If the value is not set, the field value attempts to bind a setter's or getter's field if the intercepted method is an accessor method. Otherwise, the binding renders the target method to be an illegal candidate for binding.

Important: Don't confuse this annotation with Advice.FieldValue annotation. This annotation should be used only in combination with method delegation (MethodDelegation.to(...)). For Advice ASM visitor use alternative annotation from net.bytebuddy.asm.Advice package.

See Also:

MethodDelegation, TargetMethodAnnotationDrivenBinder, RuntimeType

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
Class<?>	declaringType Defines the type on which the field is declared.
String	value The name of the field to be accessed.

Element Detail

value

public abstract String value

The name of the field to be accessed.

Returns:

The name of the field.

Default:

""

declaringType

public abstract Class<?> declaringType

Defines the type on which the field is declared. If this value is not set, the most specific type's field is read, if two fields with the same name exist in the same type hierarchy.

Returns:

The type that declares the accessed field.

Default:

void.class