Subject: Re: [xsl] What does the phrase "duplicates removed" mean precisely? From: andrew welch <andrew.j.welch@xxxxxxxxx> Date: Wed, 1 Feb 2006 10:01:47 +0000 |
On 2/1/06, Jay Bryant <jay@xxxxxxxxxxxx> wrote: > Hi, Mark, > > <SomeTag>This is the text</SomeTag> > > wouldn't be a duplicate, as it is a single element. > > Now, if I had a structure like this: > > <root> > <SomeTag>This is the text</SomeTag> > <SomeTag>This is the text</SomeTag> > </root> > > I'd have a duplicate. Hi Jay, In this instance "duplicates" is being referred to in the sense of a Set - a Set will by definition never contain two of the same item. In your example the nodes have the same element name and value, but they are different nodes - generate-id() will produce a different value for each. If you selected the same nodes twice eg select="/root/SomeTag|/root/SomeTag" then the assembled Set will still only contain the same nodes as if you had selected them once eg select="/root/SomeTag" or 100 times - the duplicates (or nodes with the same generate-id()) never get added (or are removed depending on your perspective). cheers andrew
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