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From Suresh Thalamati <suresh.thalam...@gmail.com>
Subject Re: [jira] Commented: (DERBY-304) If by mistake you give he location for the db backup as the db itself , then windows created directories recursively until windows crashes!
Date Thu, 02 Feb 2006 18:29:26 GMT
Hi Rajesh,

I tried getCanonicalFile() on Windows xp , it does not resolve 
symbolic/hard links.

Does the comparision u mentioned works on Linux if there are hard links ?

Quick scan at the java doc for  getCanonicalFile()/getCanonicalPath():
"This typically involves removing redundant names such as "." and ".." 
from the pathname, resolving symbolic links (on UNIX platforms), and 
converting drive letters to a standard case (on Microsoft Windows 
platforms)."


Thanks
-suresht.


Rajesh Kartha (JIRA) wrote:
>     [ http://issues.apache.org/jira/browse/DERBY-304?page=comments#action_12364919 ]

> 
> Rajesh Kartha commented on DERBY-304:
> -------------------------------------
> 
> The (file.getCanonicalFile()) gives you the actual path for symbolic links. I am wondering
 if that could be used to compare the
> backup  location and the actual database to be the same.  
> 
> Something like:
> 
> f.getCanonicalFile().equals(f1.getCanonicalFile())
> 
> This will return true is'f1' is a symbolic link to 'f'. I know for sure this works on
Linux.
> 
> 
> -Rajesh
> 
> 
> 
> 
>>If by mistake you give he location for the db backup as the db itself , then windows
created directories recursively until windows crashes!
>>-------------------------------------------------------------------------------------------------------------------------------------------
>>
>>         Key: DERBY-304
>>         URL: http://issues.apache.org/jira/browse/DERBY-304
>>     Project: Derby
>>        Type: Bug
>>  Components: Store
>>    Versions: 10.1.1.0
>> Environment: With JDK 142 on Windows XP
>>    Reporter: Manjula Kutty
>>    Priority: Minor
> 
> 
>>If by mistake you give he location for the db backup as the db itself , then windows
created directories recursively until it crashes! 
>>Repro:
>>			CallableStatement cs = conn.prepareCall("CALL SYSCS_UTIL.SYSCS_BACKUP_DATABASE_AND_ENABLE_LOG_ARCHIVE_MODE(?,
?)");
>>			cs.setString(1, "c:/maildb");
>>			cs.setInt(2, 1);
>>			cs.execute();
>>			cs.close();
>>result:
>>C:\maildb\maildb\maildb\maildb\maildb\maildb\maildb\maildb\maildb\maildb\maildb\maildb\maildb\maildb\.....................
Until windows can not show the path!!!
> 
> 


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