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public abstract class BasicPermission extends Permission implements Serializable
The BasicPermission class extends the Permission class, and can be used as the base class for permissions that want to follow the same naming convention as BasicPermission.
The name for a BasicPermission is the name of the given permission (for example, "exit", "setFactory", "print.queueJob", etc). The naming convention follows the hierarchical property naming convention. An asterisk may appear by itself, or if immediately preceded by a "." may appear at the end of the name, to signify a wildcard match. For example, "*" and "java.*" are valid, while "*java", "a*b", and "java*" are not valid.
The action string (inherited from Permission) is unused. Thus, BasicPermission is commonly used as the base class for "named" permissions (ones that contain a name but no actions list; you either have the named permission or you don't.) Subclasses may implement actions on top of BasicPermission, if desired.
Constructor Summary | |
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BasicPermission(String name) Creates a new BasicPermission with the specified name. |
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BasicPermission(String name, String actions) Creates a new BasicPermission object with the specified name. |
Method Summary | |
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boolean |
Checks two BasicPermission objects for equality. |
String |
Returns the canonical string representation of the actions, which currently is the empty string "", since there are no actions for a BasicPermission. |
int |
hashCode() Returns the hash code value for this object. |
boolean |
Checks if the specified permission is "implied" by this object. |
PermissionCollection |
Returns a new PermissionCollection object for storing BasicPermission objects. |
Methods inherited from class java.security.Permission |
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checkGuard, equals, getActions, getName, hashCode, implies, newPermissionCollection, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public BasicPermission(String name)
name
- the name of the BasicPermission.public BasicPermission(String name, String actions)
name
- the name of the BasicPermission.actions
- ignored.Method Detail |
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public boolean equals(Object obj)
equals
in class Permission
obj
- the object we are testing for equality with this object.public String getActions()
getActions
in class Permission
public int hashCode()
getName().hashCode()
, where getName
is
from the Permission superclass.
hashCode
in class Permission
public boolean implies(Permission p)
More specifically, this method returns true if:
implies
in class Permission
p
- the permission to check against.public PermissionCollection newPermissionCollection()
A BasicPermissionCollection stores a collection of BasicPermission permissions.
BasicPermission objects must be stored in a manner that allows them
to be inserted in any order, but that also enables the
PermissionCollection implies
method
to be implemented in an efficient (and consistent) manner.
newPermissionCollection
in class Permission
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