- From: "G. Ken Holman" <gkholman@C...>
- To: Roger L Costello <costello@m...>,"xml-dev@l..." <xml-dev@l...>
- Date: Fri, 11 Feb 2022 10:31:28 -0500
Well, there is no need to confuse everyone else.
The specification is quite clear. When you ask for the value of a
sequence of text nodes, they are concatenated without marking any
original boundaries. When you ask for the value of a sequence of
strings, they are joined separated by a single space, and there are
no marks of any original boundaries. The spec is clear that text
nodes are treated differently than strings.
What is confusing about that?
As for how many text nodes there are, a "leaf element" is not
equivalent to a "leaf node". The element can be made up of text,
comments, and processing instructions as children, depending on the
syntax you use to mark up that element.
What is confusing about that?
In all of your exclamations, you haven't stated how what you see is
in any way contrary to what the specifications or training material
tell you to expect.
Why muddy the waters?
. . . . . Ken
At 2022-02-11 15:12 +0000, Roger L Costello wrote:
Hi Folks,
Okay, I'm confused.
I thought that a leaf element can have either zero or one text node.
Apparently a leaf element can have 0, 1, 2, 3, 4, 5, 6, ... text nodes!
For example, how many text nodes does this leaf element have?
<Test>abc<!-- blah -->def</Test>
Answer: It has two text nodes:
text()[1] and text()[2]
How do I know this? Well, I executed this XPath:
Test/text()[1]
which resulted in this output:
abc
and this XPath:
Test/text()[2]
resulted in this output:
def
To confirm that there are indeed two text nodes within the <Test>
element, I used XPath to count the number of text nodes:
count(Test/text())
That produced this output:
2
In fact, the text node containing "def" *follows* the text node
containing "abc", as this XPath shows:
Test/text()[1]/following::text()
That gave this output:
def
Interesting!
But the really interesting thing is that if I create an XPath to
answer this question: What is the text in the <Test> element?
Test/text()
Shockingly, I get this output:
abcdef
Huh???
The previous tests determined that there are two separate text
nodes, so how can there now be only one text node?
I am confused.
/Roger
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