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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 37854] - Too strict Extension-List analysis
Date Wed, 21 Dec 2005 10:03:48 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=37854





------- Additional Comments From pgrange@cvf.fr  2005-12-21 11:03 -------
The servlet spec v.2.3 p. 63 just makes a reference to the manifest spec 
specifying that the web container must reject the app and display an 
informative message if it can not satisfy a dependency. 
 
On the other hand, the manifest spec 
(http://java.sun.com/j2se/1.3/docs/guide/extensions/versioning.html) specifies 
the behavior of the Java plugin. Since the servlet specification makes a direct 
reference to this manifest specification, I think we can consider that this 
behavior also applies to web containers. It specifies that : 
 
<extension>-Specification-Version 
<extension>-Implementation-Version 
<extension>-Implementation-Vendor-Id 
 
are all *OPTIONAL* in a manifest that indicate a dependency to <extension>. 
Moreover, still in manifest specification : 
 
"If the applet's manifest doesn't contain one or more of the optional 
attributes, the plug-in will accept any value of the corresponding attribute in 
the optional package's manifest." 
 
I suppose that "any value" also include no value. 
 
Hope it helps. 

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