Say something about preservation of document properties when p:with-input/@select is used

[gimsieke]

As I commented here a bit off-topic, if a pipeline author uses p:with-input/@select, the input document’s content-type, serialization and maybe base-uri properties might not be preservable even if the step says it will preserve all document properties.

Consider this:

<p:identity name="text">
  <p:with-input port="source">
    <p:inline>&lt;doc/></p:inline>
  </p:with-input>
</p:identity>
<!-- → Text document -->
<p:identity name="parse">
  <p:with-input port="source" select="parse-xml-fragment(/)">
</p:identity>
<!-- → XML document -->

Likewise, p:identity can turn an XML document into a text document using an appropriate p:with-input/@select.

This is not limited to p:identity. So I don’t think we can say for any step that it will preserve all document properties under all circumstances.

Should we say something about it in the steps spec introduction, after the bullet list below “Some aspects of documents are generally unchanged by steps:”?

[xml-project]

👍

[ndw]

Consensus: we need to clarify content-type, base-uri, serialization, etc.

[ndw]

Closed by #142