Subject: Re: [xsl] Newbie question, commenting out an element From: "Douglas Wade" <douglaswade@xxxxxxxxx> Date: Sun, 21 Dec 2008 10:39:50 -0800 |
Thank you ... I had thought of using perl. In fact the transformation script is a perl script that first converts from SGML to XML and then changes graphic names and bunch of other strings. The problem for me with perl is that I have to do more work to handle items, like elements starting on one line and finishing on another. I wanted to move from my serial and string based approach to XSL thinkin' I could get my skills more current and do more with less effort. D On Sat, Dec 20, 2008 at 11:05 PM, Deborah Pickett <debbiep-list-xsl@xxxxxxxxxx> wrote: > Hi Douglas, > > Douglas Wade wrote: >> <applic><assert></assert></ >> applic> >> to >> <!-- <applic><assert></assert></applic> --> > > The reason this isn't working for you is that XSLT doesn't produce > serialized XML (at least, not directly). It produces a result tree > (think of something like a DOM tree), which is serialized to XML by > another agent*. In other words, XSLT works on elements and nodes, not > tags and text. > > It's not allowed for an XML result tree to have comment nodes (made with > <xsl:comment>) with child nodes other than text. If you try something like > > <xsl:comment><xsl:element name="foo"/></xsl:comment> > > you will get an error reminding you of this. > > That said, there are a couple of ways you can do this. One is to not > use XSLT at all, and treat this as a text-substitution problem to be > done in a general text-processing language like Perl. The other is to > use an XPath extension function such as saxon:serialize(), which can > turn an XML result tree into a string that represents the tree, which > you can then stick into your output with <xsl:value-of>. > > Whichever way you go, you will need to ensure that the comment never > contains the sequence of characters "--", which is forbidden in XML > comments to prevent the possibility of comments nesting. > > * That agent is usually your XSLT processor, after it has finished > processing the stylesheet, but XSLT processors don't have to do this.
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