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Java Source Code / Java Documentation » GIS » deegree » org.deegree.security.drm 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.deegree.security.drm.SecurityAccessManager

SecurityAccessManager
public class SecurityAccessManager (Code)
This singleton manages access to the data stored in an associated SecurityRegistry -instance.

In order to use methods that read from the registry, a SecurityAccess instance has to be acquired first:

Example Code:

 SecurityAccess access = SecurityAccessManager.getInstance();
 ReadToken accessToken = access.acquireReadToken();
 Role role = access.getRoleById( accessToken, 1 );
 

If write access is needed as well, one has to acquire the exclusive SecurityTransaction. This is only possible if the User has the "write"-privilege.

Example Code:

 SecurityAccess access = SecurityAccess.getInstance ();
 SecurityTransaction lock = access.acquireSecurityTransaction (user);
 access.registerUser (lock, "TESTUSER");
 ...
 access.commitTransaction (lock);
 // after committing changes are made persistent
 

author:
   Markus Schneider
author:
   last edited by: $Author:wanhoff$
version:
   $Revision: 10606 $, $Date:26.03.2007$




Method Summary
public  voidabortTransaction(SecurityTransaction lock)
     Aborts the current transaction and undoes all changes made to the Registry.
public  SecurityAccessacquireAccess(User user)
     Tries to acquire a SecurityAccess -instance.
public  SecurityTransactionacquireTransaction(User user)
     Tries to acquire the SecurityTransaction for the given User.
public  voidcommitTransaction(SecurityTransaction transaction)
     Ends the current transaction and commits all changes to the Registry.
public static synchronized  SecurityAccessManagergetInstance()
     Returns the only instance of this class.
public  UsergetUserByName(String name)
     This method is only to be used to get an initial User object.
public static synchronized  voidinitialize(String registryClassName, Properties registryProperties, long timeout)
     Initializes the SecurityAccessManager -singleton with the given Registry -instance.
public static  booleanisInitialized()
    
 voidverify(SecurityTransaction transaction)
     Verifies that the submitted Transaction is valid.



Method Detail
abortTransaction
public void abortTransaction(SecurityTransaction lock) throws GeneralSecurityException(Code)
Aborts the current transaction and undoes all changes made to the Registry.
Parameters:
  lock -
throws:
  GeneralSecurityException -



acquireAccess
public SecurityAccess acquireAccess(User user) throws GeneralSecurityException, UnauthorizedException(Code)
Tries to acquire a SecurityAccess -instance.
Parameters:
  user - the instance
throws:
  GeneralSecurityException -
throws:
  UnauthorizedException -



acquireTransaction
public SecurityTransaction acquireTransaction(User user) throws GeneralSecurityException, UnauthorizedException(Code)
Tries to acquire the SecurityTransaction for the given User. Only possibly for User s that have the "modify"-privilege.

NOTE: The implementation checks if the currentTransaction timed out BEFORE it checks if the user is allowed to write to the registry at all. This is because some JDBC-drivers (at least the JDBC-ODBC- bridge together with Microsoft Access (tm)) have been observed to return strange results sometimes when there's a transaction still going on (so that the privileges of the user cannot be retrieved reliably from the registry).
Parameters:
  user - the transaction
throws:
  GeneralSecurityException -
throws:
  UnauthorizedException -




commitTransaction
public void commitTransaction(SecurityTransaction transaction) throws GeneralSecurityException(Code)
Ends the current transaction and commits all changes to the Registry.
Parameters:
  transaction -
throws:
  GeneralSecurityException -



getInstance
public static synchronized SecurityAccessManager getInstance() throws GeneralSecurityException(Code)
Returns the only instance of this class. the only instance of this class.
throws:
  GeneralSecurityException -



getUserByName
public User getUserByName(String name) throws GeneralSecurityException(Code)
This method is only to be used to get an initial User object. (Otherwise one would need a User to perform a User lookup.)
Parameters:
  name - the user
throws:
  GeneralSecurityException -



initialize
public static synchronized void initialize(String registryClassName, Properties registryProperties, long timeout) throws GeneralSecurityException(Code)
Initializes the SecurityAccessManager -singleton with the given Registry -instance.
Parameters:
  registryClassName -
Parameters:
  registryProperties -
Parameters:
  timeout -
throws:
  GeneralSecurityException -



isInitialized
public static boolean isInitialized()(Code)
true if there is an instance



verify
void verify(SecurityTransaction transaction) throws ReadWriteLockInvalidException(Code)
Verifies that the submitted Transaction is valid. There are two ways for it to become invalid:
  • it is too old (and timed out)
  • it ended (has been aborted / committed)

Parameters:
  transaction -
throws:
  ReadWriteLockInvalidException -
throws:
  GeneralSecurityException - if transaction is invalid



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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