com.ibm.oti.shared

Class SharedClassPermission

java.lang.Object

java.security.Permission

java.security.BasicPermission

com.ibm.oti.shared.SharedClassPermission

All Implemented Interfaces:

java.io.Serializable, java.security.Guard

public class SharedClassPermission
extends java.security.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";

"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 Summary

Constructors

Constructor and Description
SharedClassPermission(java.lang.ClassLoader loader, java.lang.String actions) Constructs a new instance of this class.
SharedClassPermission(java.lang.String classLoaderClassName, java.lang.String actions) Constructs a new instance of this class.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o) Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
java.lang.String	getActions() Answers the actions associated with the receiver.
int	hashCode() Answers an integer hash code for the receiver.
boolean	implies(java.security.Permission permission) Indicates whether the argument permission is implied by the receiver.
java.security.PermissionCollection	newPermissionCollection() Answers a new PermissionCollection for holding permissions of this class.

Methods inherited from class java.security.Permission

checkGuard, getName, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SharedClassPermission

public SharedClassPermission(java.lang.ClassLoader loader,
                             java.lang.String actions)

Constructs a new instance of this class.

Parameters:

loader - java.lang.ClassLoader. The ClassLoader requiring the permission.

actions - java.lang.String. The actions which are applicable to it.

SharedClassPermission

public SharedClassPermission(java.lang.String classLoaderClassName,
                             java.lang.String actions)

Constructs a new instance of this class.

Parameters:

classLoaderClassName - java.lang.String. The className of the ClassLoader requiring the permission.

actions - java.lang.String. The actions which are applicable to it.

Method Detail

equals

public boolean equals(java.lang.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 java.security.BasicPermission

Parameters:

o - The object to compare with this object

Returns:

true If the object is the same as this object false If it is different from this object

See Also:

hashCode()

newPermissionCollection

public java.security.PermissionCollection newPermissionCollection()

Answers a new PermissionCollection for holding permissions of this class. Answer null if any permission collection can be used.

Overrides:

newPermissionCollection in class java.security.BasicPermission

Returns:

A new PermissionCollection or null

See Also:

PermissionCollection

hashCode

public int hashCode()

Answers an 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 java.security.BasicPermission

Returns:

The receiver's hash

See Also:

equals(java.lang.Object)

getActions

public java.lang.String getActions()

Answers the actions associated with the receiver. The result will be either "read", "write", or "read,write".

Overrides:

getActions in class java.security.BasicPermission

Returns:

String. The actions associated with the receiver.

implies

public boolean implies(java.security.Permission permission)

Indicates whether the argument permission is implied by the receiver.

Overrides:

implies in class java.security.BasicPermission

Parameters:

permission - java.security.Permission. The permission to check

Returns:

boolean true if the argument permission is implied by the receiver, and false if it is not.