Github user stain commented on a diff in the pull request:
https://github.com/apache/commons-rdf/pull/27#discussion_r100208441
--- Diff: api/src/main/java/org/apache/commons/rdf/api/RDFSyntax.java ---
@@ -178,17 +206,62 @@ private RDFSyntax(final String name, final String
mediaType, final String fileEx
* The <code>fileExtension</code> is compared in lower case, therefore
it
* might not be equal to the {@link RDFSyntax#fileExtension} of the
returned
* RDFSyntax.
+ * <p>
+ * The list of syntaxes supported is at least those returned by
+ * {@link #w3cSyntaxes()}.
*
* @param fileExtension
* The fileExtension to match, starting with <code>.</code>
* @return If {@link Optional#isPresent()}, the {@link RDFSyntax}
which has
- * a matching {@link RDFSyntax#fileExtension}, otherwise
+ * a matching {@link RDFSyntax#fileExtension()}, otherwise
* {@link Optional#empty()} indicating that no matching file
* extension was found.
*/
public static Optional<RDFSyntax> byFileExtension(final String
fileExtension) {
- final String ext = fileExtension.toLowerCase(Locale.ENGLISH);
- return Arrays.stream(RDFSyntax.values()).filter(t ->
t.fileExtension.equals(ext)).findAny();
+ final String ext = fileExtension.toLowerCase(Locale.ROOT);
+ return w3cSyntaxes().stream().filter(t ->
t.fileExtension().equals(ext))
+ .findAny();
+ }
+
+ /**
+ * Return the RDFSyntax with the specified {@link #name()}.
+ * <p>
+ * The list of syntaxes supported is at least those returned by
--- End diff --
Changed to
> This method support all syntaxes returned by {@link #w3cSyntaxes()}
There is no good way from a static class method to allow user extension; at
least without having a discovery mechanism (classpath sensitive) or mutable
setters/registrations (initialization sensitive) - I would argue it is out of
scope for this particular method to support that, as Commons RDF only target
RDF 1.1.
If you want we could change these lookup method to take a variable/optional
list of `Iterable<RDFSyntax>` as parameters?
(The parser/writer methods would with this PR support `RDFSyntax` from
"elsewhere" - e.g. we could return supported syntaxes from each `RDF` instance)
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