Class SharedClassPermission

  • All Implemented Interfaces:
    Serializable, Guard

    public class SharedClassPermission
    extends BasicPermission
    SharedClassPermission provides security permission to govern ClassLoader access to the shared class cache.

    Usage: To grant permission to a ClassLoader, add permission in the java.policy file. For example,

      com.ibm.oti.shared.SharedClassPermission "classloaders.myClassLoader", "read,write";
    Possible actions are:
    • "read" allows a ClassLoader to load classes from the shared cache
    • "write" allows a ClassLoader to add classes to the shared cache
    See Also:
    Serialized Form
    • Constructor Detail

      • SharedClassPermission

        public SharedClassPermission​(ClassLoader loader,
                                     String actions)
        Constructs a new instance of this class.
        Parameters:
        loader - ClassLoader the ClassLoader requiring the permission
        actions - String the actions which are applicable to it
      • SharedClassPermission

        public SharedClassPermission​(String classLoaderClassName,
                                     String actions)
        Constructs a new instance of this class.
        Parameters:
        classLoaderClassName - String the name of the ClassLoader class requiring the permission
        actions - String the actions which are applicable to it
    • Method Detail

      • equals

        public boolean equals​(Object o)
        Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.

        In this case, the receiver must be for the same property as the argument, and must have the same actions.

        Overrides:
        equals in class BasicPermission
        Parameters:
        o - the object to compare with this object
        Returns:
        boolean true if the object is the same as this object, false if it is different from this object
        See Also:
        hashCode()
      • hashCode

        public int hashCode()
        Answers the integer hash code for the receiver.

        Any two objects which answer true when passed to equals must answer the same value for this method.

        Overrides:
        hashCode in class BasicPermission
        Returns:
        the receiver's hash code
        See Also:
        equals(java.lang.Object)
      • getActions

        public String getActions()
        Answers the actions associated with the receiver.

        The result will be either "read", "write", or "read,write".

        Overrides:
        getActions in class BasicPermission
        Returns:
        String the actions associated with the receiver
      • implies

        public boolean implies​(Permission permission)
        Indicates whether the argument permission is implied by the receiver.
        Overrides:
        implies in class BasicPermission
        Parameters:
        permission - Permission the permission to check
        Returns:
        boolean true if the argument permission is implied by the receiver, and false if it is not