javax.management
Class MBeanPermission
- Guard, Serializable
Represents the permissions required to perform
operations using the
MBeanServer. As with
all
Permission objects, an
instance of this class either represents a permission
already held or one that is required to access a
particular service. In the case of
MBeanPermissions,
implication checks are made using an instance of this class
when a user requests an operation from the server, and a
SecurityManager is in place.
An
MBeanPermission consists of four elements,
which all have to match for the permission to be implied.
These are as follows:
- The action. For a required permission,
this is a single value. For a permission held by the user,
this is a list of comma-separated actions (with spaces allowed),
or
* (representing all actions). getActions()
returns this value. - The class name. For a required permission,
this is the class name of the bean being accessed, if any. If
a bean isn't involved in this action, the value is
null.
For a permission held by the user, it has one of three values:
- The empty string, implying any class.
*, also implying any class.- A class name pattern, which may specify a single class
(e.g.
java.lang.Object) or a series of classes
using the wildcard character * (e.g.
javax.swing.*.)
The member. For a required permission,
this is the member of the bean being accessed (an attribute
or operation), if any. If a member of the bean isn't involved
in this action, the value is null.
For a permission held by the user, it has one of three values:
- The empty string, implying any member.
*, also implying any member.- The name of a member.
The object name. For a required permission,
this is the ObjectName of the bean being accessed, if
any. If a bean isn't involved in this action, the value is
null. The name may not be a pattern.
For a permission held by the user, it may be the empty
string (allowing everything) or an ObjectName
pattern.
getName() returns the latter three of these as a
single string:
className#member[objectName]
where
"" is disallowed, as, although any of
the elements may be omitted, not all of them should be
left out simultaneously.
"-" is used to
represent
null. When this occurs in a
required permission, anything may match it. When this
forms part of a permission held by the user, it only
matches another
null value.
The list of valid actions is as follows:
- addNotificationListener
- getAttribute
- getClassLoader
- getClassLoaderFor
- getClassLoaderRepository
- getDomains
- getMBeanInfo
- getObjectInstance
- instantiate
- invoke
- isInstanceOf
- queryMBeans
- queryNames
- registerMBean
- removeNotificationListener
- setAttribute
- unregisterMBean
boolean | equals(Object obj)- Returns true if the given object is also an
MBeanPermission
with the same name and actions.
|
String | getActions()- Returns the list of actions in alphabetical order.
|
int | hashCode()- Returns the hashcode of the permission as the sum
of the hashcodes of the name and actions.
|
boolean | implies(Permission p)-
Returns true if this permission implies the supplied permission.
|
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
MBeanPermission
public MBeanPermission(String name,
String actions) Constructs a new
MBeanPermission with the specified name
and actions. The name is of the form
className#member[objectName],
where each element is optional, but a completely empty or
null
name is disallowed. Actions are specified as a comma-separated list
and may also not be empty or
null.
name - the name of the permission.actions - the actions associated with this permission.
MBeanPermission
public MBeanPermission(String className,
String member,
ObjectName name,
String actions) Constructs a new
MBeanPermission with the specified class name,
member, object name and actions. The name of the permission is created
using the form
className#member[objectName],
where each element is optional, but an empty or
null
name is disallowed. Actions are specified as a comma-separated list
and may also not be empty or
null.
className - the name of the class to which this permission applies,
or either null or "-" for a
value which may be implied by any class name, but not
imply any class name itself.member - the member of the class to which this permission applies,
or either null or "-" for a
value which may be implied by any member, but not
imply any member itself.actions - the actions associated with this permission.
hashCode
public int hashCode()
Returns the hashcode of the permission as the sum
of the hashcodes of the name and actions.
- hashCode in interface Permission
- the hashcode of the permission.
implies
public boolean implies(Permission p)
Returns true if this permission implies the supplied permission.
This happens if the following holds:
- The supplied permission is an
MBeanPermission - The supplied permission has either a
null classname
or its classname matches the classname of this permission. A
classname of "*" for this permission always matches
the classname of the supplied permission. Generally, '*'
acts as a wildcard, so ".*" matches '.'
followed by anything. - The supplied permission has either a
null member
or its member matches the member of this permission. A member of
"*" for this permission always matches the member
of the supplied permission. - The supplied permission has either a
null object name
or its object name matches the object name of this permission. If the
object name of this permission is a pattern, ObjectName.apply(ObjectName)
may be used as well. - The supplied permission's actions are a subset of the actions
of this permission. If the
queryMBeans action is presented,
the queryNames action is implied.
- implies in interface Permission
p - the permission to check that this permission implies.
- true if this permission implies
p.
MBeanPermission.java -- Permissions controlling server access.
Copyright (C) 2006 Free Software Foundation, Inc.
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