org.apache.wiki.auth.acl
Class AclImpl

java.lang.Object
  org.apache.wiki.auth.acl.AclImpl

All Implemented Interfaces:

Serializable, Acl

public class AclImpl
extends Object
implements Acl, Serializable

JSPWiki implementation of an Access Control List.

Since:

2.3

See Also:

Serialized Form

Constructor Summary

AclImpl()
Constructs a new AclImpl instance.

Method Summary

boolean	addEntry(AclEntry entry) Adds an ACL entry to this ACL.
Enumeration<AclEntry>	entries() Returns an enumeration of the entries in this ACL.
Principal[]	findPrincipals(Permission permission) Returns all Principal objects assigned a given Permission in the access control list.
AclEntry	getEntry(Principal principal) Returns an AclEntry for a supplied Principal, or null if the Principal does not have a matching AclEntry.
boolean	isEmpty() Returns true, if this Acl is empty.
boolean	removeEntry(AclEntry entry) Removes an ACL entry from this ACL.
String	toString() Returns a string representation of the contents of this Acl.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

AclImpl

public AclImpl()

Constructs a new AclImpl instance.

Method Detail

findPrincipals

public Principal[] findPrincipals(Permission permission)

Returns all Principal objects assigned a given Permission in the access control list. The Principals returned are those that have been granted either the supplied permission, or a permission implied by the supplied permission. Principals are not "expanded" if they are a role or group.

Specified by:

findPrincipals in interface Acl

Parameters:

permission - the permission to search for

Returns:

an array of Principals possessing the permission

addEntry

public boolean addEntry(AclEntry entry)

Adds an ACL entry to this ACL. An entry associates a principal (e.g., an individual or a group) with a set of permissions. Each principal can have at most one positive ACL entry, specifying permissions to be granted to the principal. If there is already an ACL entry already in the ACL, false is returned.

Specified by:

addEntry in interface Acl

Parameters:

entry - - the ACL entry to be added to this ACL

Returns:

true on success, false if an entry of the same type (positive or negative) for the same principal is already present in this ACL

removeEntry

public boolean removeEntry(AclEntry entry)

Removes an ACL entry from this ACL.

Specified by:

removeEntry in interface Acl

Parameters:

entry - the ACL entry to be removed from this ACL

Returns:

true on success, false if the entry is not part of this ACL

entries

public Enumeration<AclEntry> entries()

Returns an enumeration of the entries in this ACL. Each element in the enumeration is of type AclEntry.

Specified by:

entries in interface Acl

Returns:

an enumeration of the entries in this ACL.

getEntry

public AclEntry getEntry(Principal principal)

Returns an AclEntry for a supplied Principal, or null if the Principal does not have a matching AclEntry.

Specified by:

getEntry in interface Acl

Parameters:

principal - the principal to search for

Returns:

the AclEntry associated with the principal, or null

toString

public String toString()

Returns a string representation of the contents of this Acl.

Specified by:

toString in interface Acl

Overrides:

toString in class Object

Returns:

the string representation

isEmpty

public boolean isEmpty()

Returns true, if this Acl is empty.

Specified by:

isEmpty in interface Acl

Returns:

the result

Since:

2.4.68