I'm using 2.2.x and was surprised to find that, while valid XML, the following
are not valid in a pom.xml:
<modelVersion> 4.0.0 </modelVersion>
or
<modelVersion>
4.0.0
</modelVersion>
I had expected that the maven xml parser would be normalizing the whitespace,
but looked in
maven-2.2.x/maven-project/src/main/java/org/apache/maven/project/DefaultMavenProjectBuilder.java
and found this in readModel(), line 1609:
if ( modelSource.indexOf( "<modelVersion>" + MAVEN_MODEL_VERSION ) < 0 )
{
throw new InvalidProjectModelException( projectId, pomLocation,
"Not a v" + MAVEN_MODEL_VERSION + " POM." );
}
Why is the parser hand-parsing this piece of the XML instead of looking at the
child content and normalizing/trimming whitespace? It's counterintuitive to me
as a user, since the POM XSD decalres modelVersion to be xs:string and there is
no mention anywhere that I'm not allowed to use whitespace.
jon
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