[jbossseam-issues] [JBoss JIRA] Updated: (JBSEAM-4078) Jar locking during of component initialization on Windows

[Andrey Lomakin (JIRA)]

     [ https://jira.jboss.org/jira/browse/JBSEAM-4078?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrey Lomakin updated JBSEAM-4078:
-----------------------------------

    Environment: Windows XP, Java(TM) SE Runtime Environment (build 1.6.0_13-b03), GlassFish v3 Prelude (build b28c)  (was: Windows 2000, Java(TM) SE Runtime Environment (build 1.6.0_13-b03), GlassFish v3 Prelude (build b28c))


> Jar locking during of component initialization on Windows
> ---------------------------------------------------------
>
>                 Key: JBSEAM-4078
>                 URL: https://jira.jboss.org/jira/browse/JBSEAM-4078
>             Project: Seam
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.1.1.GA
>         Environment: Windows XP, Java(TM) SE Runtime Environment (build 1.6.0_13-b03), GlassFish v3 Prelude (build b28c)
>            Reporter: Andrey Lomakin
>
> JARs that contain components.xml are locked till server shutdown and can not be removed after application undeploy on Windows.
> As I understand following snippet of code in method  org.jboss.seam.init.Initialization#initComponentsFromXmlDocuments:
>                InputStream stream = url.openStream();
>                log.debug("reading " + url);
>                try {
>                    installComponentsFromXmlElements(XML.getRootElement(stream), replacements);
>                } finally {
>                    Resources.closeStream(stream);
>                }
> should be replaced by 
>               URLConnection connection = url.openConnection();
>               connection.setUseCaches(false);
>               InputStream stream =  connection.getInputStream();
>              // and so on...
> If cashes are switched off file is opened but never closed.
> Returned instance of InputStream interface is sun.net.www.protocol.jar.JarURLConnection,JarURLInputStream that closes opened jar file
> only if cashes are not used. 
> class JarURLInputStream extends java.io.FilterInputStream {
>   103           JarURLInputStream (InputStream src) {
>   104               super (src);
>   105           }
>   106           public void close () throws IOException {
>   107               try {
>   108                   super.close();
>   109               } finally {
>   110                   if (!getUseCaches()) {
>   111                       jarFile.close();
>   112                   }
>   113               }
>   114           }
>   115       }
> http://www.docjar.com/html/api/sun/net/www/protocol/jar/JarURLConnection.java.html

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