<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="uri:xsl">
<xsl:template match="/">
<HTML><BODY><TABLE>
<xsl:for-each select="order/item">
<TR>
<TD><xsl:value-of select="name"></TD>
<TD><xsl:value-of select="price"></TD>
</TR>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
Figure 4 XSL Pattern Syntax
|
Character
|
Description
|
|
/
|
Child operator: selects immediate children of the left-side collection. When this path operator appears at the start of the pattern, it indicates that children should be selected from the root node.
|
|
//
|
Recursive descent: searches for the specified element at any depth. When this path appears at the start of the pattern, it indicates recursive descent from the root node.
|
|
.
|
Indicates the current context.
|
|
*
|
Wildcard: selects all elements regardless of the element name.
|
|
@
|
Attribute: prefix for an attribute name.
|
|
:
|
Namespace separator: separates the namespace prefix from the element or attribute name.
|
|
!
|
Applies the specified method to the reference node.
|
|
( )
|
Groups operations to explicitly establish precedence.
|
|
[ ]
|
Applies a filter pattern.
|
|
[ ]
|
Subscript operator: used for indexing within a collection.
|
Figure 5 XSL Pattern Examples
|
Pattern
|
Description
|
|
order/item/price
|
Identifies price elements within item elements within order elements within the current context.
|
|
order/*/price
|
Identifies price elements that are grandchildren of order elements within the current context.
|
|
order//price
|
Identifies price elements that exist anywhere within an order element within the current context.
|
|
//item/price
|
Identifies price elements within item elements that exist anywhere within the document.
|
|
.//price
|
Identifies price elements that exist anywhere within the current context.
|
Figure 6 Collection Methods
|
Method
|
Description
|
|
ancestor
|
Finds the nearest ancestor matching the pattern. It returns either a single element result or null.
|
|
attribute
|
Returns the collection of all attribute nodes. If the optional text parameter is provided, it returns only attributes matching that particular name.
|
|
comment
|
Returns the collection of comment nodes.
|
|
element
|
Returns the collection of all element nodes. If the optional text parameter is provided, it returns only element children matching that particular name.
|
|
node
|
Returns the collection of all nonattribute nodes.
|
|
pi
|
Returns the collection of processor instruction nodes for the particular document.
|
|
textnode
|
Returns the collection of text nodes for the particular document.
|
Figure 7 Information Methods
|
Method
|
Description
|
|
date
|
Casts values to date format
|
|
end
|
Returns true for the last element in a collection
|
|
index
|
Returns the index number of the node within the parent
|
|
nodeName
|
Specifies the tag name of the node, including the namespace prefix
|
|
nodeType
|
Returns a number to indicate the type of the node
|
|
text
|
Specifies the text contained within the element
|
|
value
|
Returns a type cast version of the value of an element
|
Figure 8 Expression Operators
|
Operator
|
Shortcut
|
Description
|
|
$and$
|
&&
|
Logical-and
|
|
$or$
|
||
|
Logical-or
|
|
$not$
|
|
Negation
|
|
$eq$
|
=
|
Equality
|
|
$ieq$
|
|
Case-insensitive equality
|
|
$ne$
|
!=
|
Not equal
|
|
$ine$
|
|
Case-insensitive inequality
|
|
$lt$
|
<
|
Less than
|
|
$ilt$
|
|
Case-insensitive less than
|
|
$le$
|
<=
|
Less than or equal
|
|
$ile$
|
|
Case-insensitive less than or equal
|
|
$gt$
|
>
|
Greater than
|
|
$igt$
|
|
Case-insensitive greater than
|
|
$ge$
|
>=
|
Greater than or equal
|
|
$ige$
|
|
Case-insensitive greater than or equal
|
|
$all$
|
|
Set operation; returns TRUE if the condition is true for all items in the collection
|
|
$any$
|
|
Set operation; returns TRUE if the condition is true for any item in the collection
|
Figure 9 DHTML Query Page
<!-- 1999, Aaron Skonnard, http://www.skonnard.com
Written for Microsoft Internet Developer, Inside Knowledge -->
<HTML>
<HEAD>
<META NAME="GENERATOR" Content="Microsoft FrontPage 4.0">
<LINK rel="stylesheet" type="text/css" href="main.css">
<TITLE>Pattern Matching Syntax Tool</TITLE>
<SCRIPT ID=clientEventHandlersJS LANGUAGE=javascript>
<!--
function btnSelectNodes_onclick() {
var strResult = "";
nl = xmlSource.SelectNodes(pattern.value);
for (i=0; i<nl.length; i++) {
n = nl.item(i);
strResult += n.xml + "\r\n\r\n";
}
divResults.innerText = strResult;
}
function btnSingleNode_onclick() {
var strResult = "";
n = xmlSource.SelectSingleNode(pattern.value);
strResult = n.xml;
divResults.innerText = strResult;
}
function btnLoad_onclick() {
xmlSource.src = form1.file.value;
form1.action = form1.file.value;
}
//-->
</SCRIPT>
</HEAD>
<BODY>
<!-- XML Data Islands -->
<XML id=xmlSource src =
orders.xml></XML>
<H1>Pattern Syntax Demo</H1>
<TABLE width="100%" height="100%">
<TR>
<TD valign=top width="40%">
<h3>XML Source:</h3>
<IFRAME id=xmlFrame name=xmlFrame class=sourcexml
src="orders.xml" width=400 height="80%">
</IFRAME><br>
<br>
<FORM action="" method=get id=form1 name=form1 target=xmlFrame>
<INPUT id=file name=file size=30 >
<INPUT type="submit" value="Load"
id=btnLoad name=btnLoad LANGUAGE=javascript onclick=
"return btnLoad_onclick()">
</FORM>
<br>
</TD>
<TD valign=top align=left>
<h3>Enter Pattern String:</h3><TEXTAREA cols=40 id=pattern name=pattern rows=3>
</TEXTAREA><br>
<INPUT type="button" value="SelectNodes"
id=btnSelectNodes name=btnSelectNodes LANGUAGE=javascript
onclick="return btnSelectNodes_onclick()">
<INPUT type="button" value="SelectSingleNode"
id=btnSingleNode name=btnSingleNode LANGUAGE=javascript
onclick="return btnSingleNode_onclick()">
<h3>Result Collection:</h3>
<DIV class=results id=divResults></DIV>
</TD>
</TR>
</TABLE>
</BODY>
</HTML>