org.springframework.security.acls.domain
Class AbstractPermission

java.lang.Object
  extended by org.springframework.security.acls.domain.AbstractPermission
All Implemented Interfaces:
Serializable, Permission
Direct Known Subclasses:
BasePermission, CumulativePermission

public abstract class AbstractPermission
extends Object
implements Permission

Provides an abstract superclass for Permission implementations.

Since:
2.0.3
Author:
Ben Alex
See Also:
Serialized Form

Field Summary
protected  char code
           
protected  int mask
           
 
Fields inherited from interface org.springframework.security.acls.model.Permission
RESERVED_OFF, RESERVED_ON, THIRTY_TWO_RESERVED_OFF
 
Constructor Summary
protected AbstractPermission(int mask)
          Sets the permission mask and uses the '*' character to represent active bits when represented as a bit pattern string.
protected AbstractPermission(int mask, char code)
          Sets the permission mask and uses the specified character for active bits.
 
Method Summary
 boolean equals(Object arg0)
           
 int getMask()
          Returns the bits that represents the permission.
 String getPattern()
          Returns a 32-character long bit pattern String representing this permission.
 int hashCode()
           
 String toString()
           
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Field Detail

code

protected char code

mask

protected int mask
Constructor Detail

AbstractPermission

protected AbstractPermission(int mask)
Sets the permission mask and uses the '*' character to represent active bits when represented as a bit pattern string.

Parameters:
mask - the integer bit mask for the permission

AbstractPermission

protected AbstractPermission(int mask,
                             char code)
Sets the permission mask and uses the specified character for active bits.

Parameters:
mask - the integer bit mask for the permission
code - the character to print for each active bit in the mask (see Permission.getPattern())
Method Detail

equals

public final boolean equals(Object arg0)
Overrides:
equals in class Object

getMask

public final int getMask()
Description copied from interface: Permission
Returns the bits that represents the permission.

Specified by:
getMask in interface Permission
Returns:
the bits that represent the permission

getPattern

public String getPattern()
Description copied from interface: Permission
Returns a 32-character long bit pattern String representing this permission.

Implementations are free to format the pattern as they see fit, although under no circumstances may Permission.RESERVED_OFF or Permission.RESERVED_ON be used within the pattern. An exemption is in the case of Permission.RESERVED_OFF which is used to denote a bit that is off (clear). Implementations may also elect to use Permission.RESERVED_ON internally for computation purposes, although this method may not return any String containing Permission.RESERVED_ON.

The returned String must be 32 characters in length.

This method is only used for user interface and logging purposes. It is not used in any permission calculations. Therefore, duplication of characters within the output is permitted.

Specified by:
getPattern in interface Permission
Returns:
a 32-character bit pattern

toString

public final String toString()
Overrides:
toString in class Object

hashCode

public final int hashCode()
Overrides:
hashCode in class Object


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