commons-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Daniel Bergholm (JIRA)" <>
Subject [jira] [Commented] (VFS-426) HTTP URL query string not part of cache key
Date Fri, 29 Jun 2012 21:27:44 GMT


Daniel Bergholm commented on VFS-426:

My workaround is to use a FileSystemManager with a NullFilesCache (Spring bean declaration):
{code:xml}<bean id="fileSystemManager" class="org.apache.commons.vfs2.impl.StandardFileSystemManager"
init-method="init" destroy-method="close">
        <property name="filesCache">
            <bean class="org.apache.commons.vfs2.cache.NullFilesCache"/>
Of course this workaround might not be good enough in cases where the performance hit of not
using a cache is a problem. 

I think a fix for this bug would be to use {{org.apache.commons.vfs2.provider.AbstractFileName#createURI}}
(which is then overriden in this case by {{org.apache.commons.vfs2.provider.URLFileName#createURI()}})
when creating the key in {{org.apache.commons.vfs2.provider.AbstractFileName#getKey()}}, since
the key is then used in {{org.apache.commons.vfs2.provider.AbstractFileName#equals(Object
o)}} and {{org.apache.commons.vfs2.provider.AbstractFileName#hashCode()}}, which are then
used in cache implementations (such as HashMaps)
> HTTP URL query string not part of cache key
> -------------------------------------------
>                 Key: VFS-426
>                 URL:
>             Project: Commons VFS
>          Issue Type: Bug
>    Affects Versions: 2.0
>            Reporter: Daniel Bergholm
> I am using commons-vfs amongst other things to download http files. When resolving different
URLs where only the query string differs, the default cache returns the wrong URL sometimes
(returning a previously accessed URL where only the query string differs).
> I think this is because the key property of URLFileName does not include the query string.
The {code:java}createURI(){code} method of URLFileName does include it, but when constructing
the key the {code:java}createURI(boolean useAbsolutePath, boolean usePassword){code} method
of AbstractFileName is used. This method only includes the path. 

This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:!default.jspa
For more information on JIRA, see:


View raw message