Used to address and select some needed nodes in XSLT
Link
Nodes
element
attribute
text
namespace
processing-instruction
comment
main document node
Selecting Nodes
/ Matches the document node
node() any node
text() Matches text nodes
<xsl:template match=" text()"> #text() matches text nodes
<xsl:value-of select="."/>
</xsl:template>
name of an element matches that element
. current node
.. parent node
* Matches any element
@ matches attributes
@* any attribute
castMember/character: direct child
description//character: character nested to any level of description
Predicates
[index or attribute] /bookstore/book[1] evaluates to the first matched node with that criteria
last()
position()<3 index of the matched elements in the parent's contents must be less than three
book[@lang] book elements that have a lang attribute
book[price>35.00]/title title elements that are children of book elements that have a price element with a value greater than 35
| or
TAG XPATH="//div[@id='panel_A_1']/*[position()=2] " EXTRACT=TXT 2nd child
Shortcut Keywords
The shortcut selects:
shortcutKey::node[predicate]
AxisName |
Result |
self |
current node |
parent |
parent of the current node |
ancestor |
all ancestors (parent, grandparent, etc.) of the current node |
ancestor-or-self |
all ancestors of the current node or the current node itself |
attribute |
all attributes of the current node |
child |
all children of the current node |
descendant |
all descendants (children, grandchildren, etc.) of the current node |
descendant-or-self |
all descendants of the current node
or the current node itself |
following |
everything in the document after the closing tag of the current node |
following-sibling |
all siblings after the current node |
namespace |
all namespace nodes of the current node |
preceding |
everything in the document that is before the start tag of the current node |
preceding-sibling |
all siblings before the current node |
Example |
Result |
child::book |
Selects all book nodes that are children of the current node |
attribute::lang |
Selects the lang attribute of the current node |
child::* |
Selects all children of the current node |
attribute::* |
Selects all attributes of the current node |
child::text() |
Selects all text child nodes of the current node |
child::node() |
Selects all child nodes of the current node |
descendant::book |
Selects all book descendants of the current node |
ancestor::book |
Selects all book ancestors of the current node |
ancestor-or-self::book |
Selects all book ancestors of the current node - and the current as well if it is a book node |
child::*/child::price |
Selects all price grandchildren of the current node |
Operator |
Description |
Example |
Return value |
| |
Computes two node-sets |
//book | //cd |
Returns a node-set with all book and cd elements |
+ |
Addition |
6 + 4 |
10 |
- |
Subtraction |
6 - 4 |
2 |
* |
Multiplication |
6 * 4
|
24 |
div |
Division |
8 div 4 |
2 |
= |
Equal |
price=9.80 |
true if price is 9.80
false if price is 9.90 |
!= |
Not equal |
price!=9.80 |
true if price is 9.90
false if price is 9.80 |
< |
Less than |
price<9.80 |
true if price is 9.00
false if price is 9.80 |
<= |
Less than or equal to |
price<=9.80 |
true if price is 9.00
false if price is 9.90 |
> |
Greater than |
price>9.80 |
true if price is 9.90
false if price is 9.80 |
>= |
Greater than or equal to |
price>=9.80 |
true if price is 9.90
false if price is 9.70 |
or |
or |
price=9.80 or price=9.70 |
true if price is 9.80
false if price is 9.50 |
and |
and |
price>9.00 and price<9.90 |
true if price is 9.80
false if price is 8.50 |
mod |
Modulus (division remainder) |
5 mod 2 |
1 |
|