MethodHandleTransformer
public class DefaultInternalObjectFilter extends Object implements MethodHandleTransformer
DynamicLinkerFactory.setInternalObjectsFilter(MethodHandleTransformer)
that delegates to a pair of filtering method handles. It takes a method handle of Object(Object)
type for filtering parameter values and another one of the same type for filtering return values. It applies them as parameter and return value filters on method handles passed to its transform(MethodHandle)
method, on those parameters and return values that are declared to have type Object
. Also handles method handles that support variable
arity calls
with a last Object[]
parameter. You can broadly think of the parameter filter as being a wrapping method for exposing internal runtime objects wrapped into an adapter with some public interface, and the return value filter as being its inverse unwrapping method.Constructor | Description |
---|---|
DefaultInternalObjectFilter |
Creates a new filter. |
Modifier and Type | Method | Description |
---|---|---|
MethodHandle |
transform |
Transforms a method handle. |
public DefaultInternalObjectFilter(MethodHandle parameterFilter, MethodHandle returnFilter)
parameterFilter
- the filter for method parameters. Must be of type Object(Object)
, or null
.returnFilter
- the filter for return values. Must be of type Object(Object)
, or null
.IllegalArgumentException
- if one or both filters are not of the expected type.public MethodHandle transform(MethodHandle target)
MethodHandleTransformer
transform
in interface MethodHandleTransformer
target
- the method handle being transformed.
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https://docs.oracle.com/en/java/javase/21/docs/api/jdk.dynalink/jdk/dynalink/linker/support/DefaultInternalObjectFilter.html