RE: [xsl] Predicates question


I know logical expressions but I had no clue how to combine them.

So thanks for showing me how to combine them in xslt. 

 

Roelof

 

 

 

 

 

---------------------------------------- > Date: Sat, 17 Dec 2011 19:11:58 
+0100 > From: wolfgang(_dot_)laun(_at_)gmail(_dot_)com > To: 
xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com > Subject: Re: [xsl] 
Predicates question > > An XPath expression may contain predicates that filter 
the set of > nodes returned by that XPath. Now, a filter for "book" is written 
as a > bracketed expression > > select="/bookstore/book[ ...predicate 
expression goes here... ]" > > Within the brackets, you are in a certain 
context: the one established > by the XPath expression up to the opening '['. 
And filtering > predicates should deal with book elements, referring to their 
position > within the store, or by investigating book elements such as title or

price. > > If you want a combination of restrictions of book positions,

you'll > have to write a more complex predicate (= logical expression). If you

are familiar with logical expressions in any programming language it >

shouldn't come as a surprise that you can combine any term with > another using 
the logical operators "and" and "or". > > select="/bookstore/book[position() > 
1 and position() < 3 ]" > > Common sense would make you think that filters can 
be applied one > after the other as well. So you should try > > 
select="/bookstore/book[position() > 1][position() < 3 ]" > > If the result 
surprises you, ask yourself: what passes through the > first filter? > > Also, 
try > > select="/bookstore/book[position() > 1][position() < 3 ]" > > > A term 
such as > /bookstore[position() > 1 ] > doesn*t make sense at all. Since 
/bookstore is the one and only root > element, there won't be another one at 
any position greater than one. > > -W > > > On 17 December 2011 17:08, Roelof 
Wobben wrote: > > > > I found that already. > > > > Im now trying to solve this 
one : > > > > > > > > > > > > > > > > > > > > > > > > > >

But I see now this message : > > > > > > >

Invalid XPath expression > > Unexpected

end of statement > > 
select="/bookstore/book[position() < 5 and 
/bookstore[position() > 1 ]" > > > > > > >

So i try to find the books between the 1

and 5 position of the list. > > > > > > > > 
Roelof > > > > > > > > > > > > > > > > > >

---------------------------------------- > 
Date: Sat, 17 Dec 2011 09:24:14 -0500 > 
From: voldrani(_at_)gmail(_dot_)com > To: 
xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
 > Subject: Re: [xsl] Predicates question >

You have a couple of other syntax errors,

too. You forgot to close > your "". Try 
this: > > 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
 method="xml" version="1.0" 
encoding="UTF-8" indent="yes"/> > 
select="/bookstore/book[position()<3]" /> >

select="title"/> > > > > On Sat, Dec

17, 2011 at 8:58 AM, Wolfgang Laun wrote: >

A basic requirement for writing XML

(and XSLT is XML) is to represent > > all 
'<' that are part of the data (element or 
attribute or other) as > > < > > > > 
Another characters in the same category is 
'&', which must be written > > as &. when 
it is a data character (and not part of a 
character > > reference that begins with 
'&'). > > > > (You may also find '>' 
written as >.) > > > > There's also a 
construct known as CDATA section, which is 
a general > > "escape" mechanism for 
element data. See /bookstore/book[2] for >

details ;-) > > > > -W > > > > On 17

December 2011 14:39, Roelof Wobben wrote: >

I have this small xml file

: > > > > > > > > > > > > > > > > > > > > >

Harry Potter > > > 29.99 > > > > > >

Learning XML > > > 39.95 > > >

And now

I want to show only a few books. > > > > >

According to this page :

http://www.w3schools.com/xpath/xpath_syntax.asp
 I can use this xslt : > > > > > > > > > >

But if I try

this on xmlspy I get this message : > > > >

Character '<' is

grammatically unexpected > > > Reason: one 
of the following is expected (see below) >

'"' > > > '&' > > > '&#' > > > '&#x' > 
[^<&"] > > > Details > > > XML

production: Production 'AttValue' not 
satisfied > > > > > > > > > > > > What part 
did I misunderstood. > > > > > > > > > > >

Roelof > > > > > > > > >

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