Class UnixNumericGroupPrincipal

java.lang.Object

com.sun.security.auth.UnixNumericGroupPrincipal

All Implemented Interfaces:

Serializable, Principal

public class UnixNumericGroupPrincipal
extends Object
implements Principal, Serializable

This class implements the Principal interface and represents a user's Unix group identification number (GID).

Principals such as this UnixNumericGroupPrincipal may be associated with a particular Subject to augment that Subject with an additional identity. Refer to the Subject class for more information on how to achieve this. Authorization decisions can then be based upon the Principals associated with a Subject.

Since:

1.4

See Also:

• Principal
• Subject
• Serialized Form

Constructor Summary

Constructors

Constructor	Description
UnixNumericGroupPrincipal(long name, boolean primaryGroup)	Create a UnixNumericGroupPrincipal using a long representation of the user's group identification number (GID).
UnixNumericGroupPrincipal(String name, boolean primaryGroup)	Create a UnixNumericGroupPrincipal using a String representation of the user's group identification number (GID).

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)	Compares the specified Object with this UnixNumericGroupPrincipal for equality.
String	getName()	Return the user's group identification number (GID) for this UnixNumericGroupPrincipal.
int	hashCode()	Return a hash code for this UnixNumericGroupPrincipal.
boolean	isPrimaryGroup()	Return whether this group identification number (GID) represents the primary group to which this user belongs.
long	longValue()	Return the user's group identification number (GID) for this UnixNumericGroupPrincipal as a long.
String	toString()	Return a string representation of this UnixNumericGroupPrincipal.

Methods declared in class Object

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

Modifier and Type	Method	Description
protected Object	clone()	Creates and returns a copy of this object.
protected void	finalize()	Deprecated, for removal: This API element is subject to removal in a future version. Finalization is deprecated and subject to removal in a future release.
final Class<?>	getClass()	Returns the runtime class of this Object.
final void	notify()	Wakes up a single thread that is waiting on this object's monitor.
final void	notifyAll()	Wakes up all threads that are waiting on this object's monitor.
final void	wait()	Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
final void	wait(long timeoutMillis)	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
final void	wait(long timeoutMillis, int nanos)	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

Methods declared in interface Principal

implies

Modifier and Type	Method	Description
default boolean	implies(Subject subject)	Returns true if the specified subject is implied by this Principal.

Constructor Details

UnixNumericGroupPrincipal

public UnixNumericGroupPrincipal(String name,
 boolean primaryGroup)

Create a UnixNumericGroupPrincipal using a String representation of the user's group identification number (GID).

Parameters:

name - the user's group identification number (GID) for this user.

primaryGroup - true if the specified GID represents the primary group to which this user belongs.

Throws:

NullPointerException - if the name is null.

UnixNumericGroupPrincipal

public UnixNumericGroupPrincipal(long name,
 boolean primaryGroup)

Create a UnixNumericGroupPrincipal using a long representation of the user's group identification number (GID).

Parameters:

name - the user's group identification number (GID) for this user represented as a long.

primaryGroup - true if the specified GID represents the primary group to which this user belongs.

Method Details

getName

public String getName()

Return the user's group identification number (GID) for this UnixNumericGroupPrincipal.

Specified by:

getName in interface Principal

Returns:

the user's group identification number (GID) for this UnixNumericGroupPrincipal

longValue

public long longValue()

Return the user's group identification number (GID) for this UnixNumericGroupPrincipal as a long.

Returns:

the user's group identification number (GID) for this UnixNumericGroupPrincipal as a long.

isPrimaryGroup

public boolean isPrimaryGroup()

Return whether this group identification number (GID) represents the primary group to which this user belongs.

Returns:

true if this group identification number (GID) represents the primary group to which this user belongs, or false otherwise.

toString

public String toString()

Return a string representation of this UnixNumericGroupPrincipal.

Specified by:

toString in interface Principal

Overrides:

toString in class Object

Returns:

a string representation of this UnixNumericGroupPrincipal.

equals

public boolean equals(Object o)

Compares the specified Object with this UnixNumericGroupPrincipal for equality. Returns true if the given object is also a UnixNumericGroupPrincipal and the two UnixNumericGroupPrincipals have the same group identification number (GID).

Specified by:

equals in interface Principal

Overrides:

equals in class Object

Parameters:

o - Object to be compared for equality with this UnixNumericGroupPrincipal.

Returns:

true if the specified Object is equal to this UnixNumericGroupPrincipal.

See Also:

• Object.hashCode()
• HashMap

hashCode

public int hashCode()

Return a hash code for this UnixNumericGroupPrincipal.

Specified by:

hashCode in interface Principal

Overrides:

hashCode in class Object

Returns:

a hash code for this UnixNumericGroupPrincipal.

See Also:

• Object.equals(java.lang.Object)
• System.identityHashCode(Object)