[jira] Closed: (DIRSERVER-256) SchemaService modifies attibute while checking for removal of last attribute value

["Emmanuel Lecharny (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DIRSERVER-256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Emmanuel Lecharny closed DIRSERVER-256.
---------------------------------------


Closing all issues created in 2005 and before which are marked resolved

> SchemaService modifies attibute while checking for removal of last attribute value
> ----------------------------------------------------------------------------------
>
>                 Key: DIRSERVER-256
>                 URL: https://issues.apache.org/jira/browse/DIRSERVER-256
>             Project: Directory ApacheDS
>          Issue Type: Bug
>    Affects Versions: pre-1.0
>            Reporter: Claus Turkalj
>         Assigned To: Alex Karasulu
>             Fix For: 1.0-RC1
>
>
> The SchemaService is modifying an attribute although it is not the last interceptor in the interceptor chain. If one of the interceptors invoked after the SchemaService throws an exception, the modification has already been commited.
> The modification happens while the SchemaService checks if a DirContext.REMOVE_ATTRIBUTE operation removes the last value of an attribute:
>     private boolean isCompleteRemoval( Attribute change, Attributes entry ) throws NamingException
>     {
>         // if change size is 0 then all values are deleted then we're screwed
>         if ( change.size() == 0 )
>         {
>             return true;
>         }
>         // can't do math to figure our if all values are removed since some
>         // values in the modify request may not be in the entry.  we need to
>         // remove the values from a cloned version of the attribute and see
>         // if nothing is left.
>         Attribute changedEntryAttr = entry.get( change.getID() );
>         for ( int jj = 0; jj < change.size(); jj++ )
>         {
>             changedEntryAttr.remove( change.get( jj ) );
>         }
>         return changedEntryAttr.size() == 0;
>     }
> Changing the line
>         Attribute changedEntryAttr = entry.get( change.getID() );
> to
>         Attribute changedEntryAttr = entry.get( change.getID() ).clone();
> seems to fix the problem.

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