The specification is not clear on whether hierarchical library names are supported or not #740
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Section 2.6.1.3 specifies the rules for valid resource identifiers. The only
constraint placed on the characters that may occur in identifiers is "Every
character in a resource identifier must be a valid character suitable for use in
a string passed to the constructor of java.io.File that takes a single String
argument."
This makes it appear as if hierarchical library names in resources, such as
components/util/login.xhtml
might be valid.
This actually works in Mojarra. You can define a composite component in
resources/components/util/login.xhtml and define a namespace
xmlns:util="http://java.sun.com/jsf/composite/components/util"
But apparently, this generality was not envisioned for 2.0, and a backing
component with the fully qualified class name
components.util.login
will not be associated with the composite component, as is specified by the API
docs for Application#createComponent. "Create a fully qualified Java class name
by removing any file extension from resource-name and let fqcn be library-name +
"." + resource-name".
When fixing this, it would be good also to address other potential issues in
2.6.1.3.
util". Both in Windows and Unix/Linux, '
' is
"a valid character suitable for use in a string passed to the constructor of
java.io.File that takes a single String argument." But the resulting
java.io.File is a very different thing in each case. As a result, a WAR file may
deploy on one OS and not another.
Even worse, "c:util" could mean a drive letter in Windows.
It seems wise to restrict oneself to some subset of characters that is likely to
OS-independent results when passed to java.io.File(String). Perhaps an XML
NameChar (http://www.w3.org/TR/REC-xml/#NT-NameChar) excepting the colon.
Is this version 2.1 of de/login.xhtml or is it the German version of
2_1/login.xhtml? Without specifying that a library name may not be an
underscore-separated sequence of nonnegative integers, either one is a valid
interpretation.
Similarly, consider "de/header.css" in the table on p. 2-24. How is one to know
that this isn't in the library with name "de"?
Potential resolution:
Specify in 2.6.1.3 that
a libraryName or resourceName contains only XML NameChar, but not a colon
a libraryName or resourceName does not match the regex [0-9]([0-9])* or
[A-Za-z] {2}([A-Za-z]{2}
(_[A-Za-z]+)*)?
Environment
Operating System: All
Platform: All
Affected Versions
[2.0]
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