Class DefaultInternalObjectFilter

java.lang.Object
jdk.dynalink.linker.support.DefaultInternalObjectFilter
All Implemented Interfaces:
MethodHandleTransformer
public class DefaultInternalObjectFilter extends Object implements MethodHandleTransformer
Default implementation for a 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.
Since:
9

  • Constructor Summary

    Constructors
    Constructor
    Description
    DefaultInternalObjectFilter(MethodHandle parameterFilter, MethodHandle returnFilter)
    Creates a new filter.

  • Method Summary

    Modifier and Type
    Method
    Description
    MethodHandle
    transform(MethodHandle target)
    Transforms a method handle.

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Creates and returns a copy of this object.
    boolean
    equals(Object obj)
    Indicates whether some other object is "equal to" this one.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    Finalization is deprecated and subject to removal in a future release.
    final Class<?>
    getClass()
    Returns the runtime class of this Object.
    int
    hashCode()
    Returns a hash code value for this object.
    final void
    notify()
    Wakes up a single thread that is waiting on this object's monitor.
    final void
    notifyAll()
    Wakes up all threads that are waiting on this object's monitor.
    String
    toString()
    Returns a string representation of the object.
    final void
    wait()
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
    final void
    wait(long timeoutMillis)
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
    final void
    wait(long timeoutMillis, int nanos)
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

  • Constructor Details

    • DefaultInternalObjectFilter

      public DefaultInternalObjectFilter(MethodHandle parameterFilter, MethodHandle returnFilter)
      Creates a new filter.
      Parameters:
      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.
      Throws:
      IllegalArgumentException - if one or both filters are not of the expected type.

  • Method Details