Subject: [xsl] XSLT Streaming: What is the rationale for the rule that a child can be processed only once? From: "Costello, Roger L." <costello@xxxxxxxxx> Date: Sun, 27 Oct 2013 09:30:48 +0000 |
Hi Folks, XSLT streaming has this rule: XSLT code cannot process a child element more than once. I seek to understand the rationale for this rule. I think the rationale is this: Imagine a child element that contains a lot of stuff and has a very deep subtree. The first time the child is referenced, the XSLT processor moves forward in the XML, through the deep subtree. If the child is allowed to be referenced again, the XSLT processor would need to "back up" in the XML, potentially a long ways. In streaming we want to keep moving forward, without any backing up. Is that correct? Is that the rationale for not allowing a child to be processed more than once? /Roger
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