Subject: Re: [xsl] When *not* to use XLST... From: Lars Huttar <lars_huttar@xxxxxxx> Date: Thu, 23 Apr 2009 15:41:27 -0500 |
On 4/23/2009 1:50 PM, Shawn Milochik wrote: > A final note which may help clarify what I'm asking for: The two most > challenging problems I've had so far were how to get the value of an > attribute of a parent node in the XSLT section that processes the > child, <xsl:value-of select="../@attrname" /> > and how to check to see whether any of the child nodes had a > specific value in a named attribute when processing the parent node. <xsl:if test="*[@attrname = 'specificValue']">... > Both are trivial to do with a class in a programming language by just > accessing a property or method. To be fair they're trivial in XSLT as > well, but the syntax to do takes a long time to discover by Google > searches. Ken Holman pointed out that this is not an ideal way to learn any language. But I would concede that XSLT is more difficult than most to learn incrementally. This is because it is more radically different from your garden-variety scripting language. It's a powerful language, but it relies on some substantial non-obvious foundational concepts. For that reason, you really do have to put some time into learning the language, not just googling examples. I think every language has a curve such that at some point you reach the place where you save more time by learning the core concepts well than by searching or asking for just-in-this-case help. For XSLT that point comes earlier. It's just a lot harder to tweak an XSLT program and get the result that you expect, when you don't know the fundamentals. When I learned XSLT, it was with Jeni Tennison's book, Beginning XSLT (1st ed.) I would now recommend the new edition. After reading attentively the first several chapters of that, you will have a solid grasp of the concepts, and you will be embarrassed at how easy the above problems have become. As someone else said, reading this list will help you learn the FAQ's as well. Lars
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