Tue, 17 Oct 2023 11:56:12 -0700, /David Karr/:
[...]
cvc-complex-type.3.2.2: Attribute 'combine.self' is not allowed to
appear in element 'configuration'.
I, along with multiple other people, assumed that this indicates a bug in
m2e, because it clearly works in the command-line build. However, it was
pointed out that m2e is actually USING the defined schema defined in the
boilerplate of a pom.xml, instead of ignoring it, and if you open up that
schema, it clearly shows the lack of an "attribute" element in the
"configuration" complex-type.
So, clearly mvn is using that attribute, but I'm guessing it's not doing
any schema validation, or builds using that attribute would fail.
I'm not familiar with this attribute but looking at
<https://maven.apache.org/xsd/maven-4.0.0.xsd>:
You can control how child POMs inherit configuration from parent POMs by
adding <code>combine.children</code> or <code>combine.self</code>
attributes to the children of the configuration element...
If I'm reading this correctly, it says the attribute could/should be
added to the children of the <configuration> element, and not on that
element itself. Then I don't know why it works in the command-line run.
I guess others would provide more detail.
--
Stanimir
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