Class SecureLookupSupplier

java.lang.Object
jdk.dynalink.SecureLookupSupplier
Direct Known Subclasses:
CallSiteDescriptor
public class SecureLookupSupplier extends Object
Encapsulates a MethodHandles.Lookup object.
API Note:
SecureLookupSupplier provided a way in older JDK releases to guard access to a MethodHandles.Lookup object when running with a security manager set.
Since:
9

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final String
    GET_LOOKUP_PERMISSION_NAME
    The name of a runtime permission required to successfully invoke the getLookup() method.

  • Constructor Summary

    Constructors
    Constructor
    Description
    SecureLookupSupplier(MethodHandles.Lookup lookup)
    Creates a new secure lookup supplier for the given lookup.

  • Method Summary

    Modifier and Type
    Method
    Description
    final MethodHandles.Lookup
    getLookup()
    Returns the lookup secured by this SecureLookupSupplier.
    protected final MethodHandles.Lookup
    getLookupPrivileged()
    Returns the lookup secured by this SecureLookupSupplier.

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Field Details

    • GET_LOOKUP_PERMISSION_NAME

      public static final String GET_LOOKUP_PERMISSION_NAME
      The name of a runtime permission required to successfully invoke the getLookup() method.
      See Also:

  • Constructor Details

    • SecureLookupSupplier

      public SecureLookupSupplier(MethodHandles.Lookup lookup)
      Creates a new secure lookup supplier for the given lookup.
      Parameters:
      lookup - the lookup to secure. Can not be null.
      Throws:
      NullPointerException - if null is passed.

  • Method Details

    • getLookup

      public final MethodHandles.Lookup getLookup()
      Returns the lookup secured by this SecureLookupSupplier.
      Returns:
      the lookup secured by this SecureLookupSupplier.

    • getLookupPrivileged

      protected final MethodHandles.Lookup getLookupPrivileged()
      Returns the lookup secured by this SecureLookupSupplier.
      Returns:
      same as returned value of getLookup().