A list of operators on nodes to be used with the XPath expression:
| Index | Operator | Description |
|---|---|---|
| 1) | / | It is used to select node under a specific node. |
| 2) | // | It is used to select node from root node. |
| 3) | [...] | It is used to check node value. |
| 4) | | | It is used for union of two node sets. |
A list of functions on nodes to be used with the XPath expression:
| Index | Function | Description |
|---|---|---|
| 1) | node() | It is used to select all kinds of nodes. |
| 2) | processing-instruction() | It is used to select nodes which are processing instruction. |
| 3) | text() | It is used to select a text node. |
| 4) | name() | It is used to provide the name of the node. |
| 5) | position() | It is used to provide the position of the node. |
| 6) | last() | It is used to select the last node relative to current node; |
| 7) | comment() | It is used to select nodes which are comments. |
Let's take an example to create a table of <employee> element with their details, by iterating over each employee. It calculates the position of the student node then displays details of the employee with serial number.
Employee.xml:
<?xml version = "1.0"?>
<?xml-stylesheet type = "text/xsl" href = "employee.xsl"?>
<class>
<employee id = "001">
<firstname>Abhiram</firstname>
<lastname>Kushwaha</lastname>
<nickname>Manoj</nickname>
<salary>15000</salary>
</employee>
<employee id = "002">
<firstname>Akash</firstname>
<lastname>Singh</lastname>
<nickname>Bunty</nickname>
<salary>25000</salary>
</employee>
<employee id = "003">
<firstname>Brijesh</firstname>
<lastname>Kaushik</lastname>
<nickname>Ballu</nickname>
<salary>20000</salary>
</employee>
<employee id = "004">
<firstname>Zoya</firstname>
<lastname>Mansoori</lastname>
<nickname>Sonam</nickname>
<salary>30000</salary>
</employee>
</class>Employee.xsl:
<?xml version = "1.0" encoding = "UTF-8"?>
<xsl:stylesheet version = "1.0"
xmlns:xsl = "http://www.w3.org/1999/XSL/Transform">
<xsl:template match = "/">
<html>
<body>
<h2>Employee</h2>
<table border = "1">
<tr bgcolor = "pink">
<th>Serial No</th>
<th>ID</th>
<th>First Name</th>
<th>Last Name</th>
<th>Nick Name</th>
<th>Salary</th>
</tr>
<xsl:for-each select = "class/employee">
<tr>
<td><xsl:value-of select = "position()"/></td>
<td><xsl:value-of select = "@id"/></td>
<td><xsl:value-of select = "firstname"/></td>
<td><xsl:value-of select = "lastname"/></td>
<td><xsl:value-of select = "nickname"/></td>
<td><xsl:value-of select = "salary"/></td>
</tr>
</xsl:for-each>
</table>
</body>
</html>
</xsl:template>
</xsl:stylesheet>Output:
