IBM Version 5 manual Adding the error case, Example 11-6 Customer.XSL firstname template

HTML

XSL Servlet

Customer

Result XSL

doPost

XMLToSQL

HTML

normal case

XSLT

Processor

error case

XML Data

-Firstname -Lastname -email

-membership

doGet

Customer XSL

Figure 11-7 The doPost method

Adding the error case

In the error case, we need to set back the data that was originally posted from the browser. Unless this functions, all user typed information has been cleared when the error occurred. To bring back the data to the browser, we need to modify the template. The original value attribute of the input tag is blank. To set back with the value that was previously typed (the XML data contains that data), use variable {$fname} in the value attribute. To set this variable, use xsl:variable tag and use the value of the current position. You need this modification to all fields.

Example 11-6 Customer.XSL firstname template

<xsl:template match="firstname"> <xsl:variable name="fname"> <xsl:value-of select="."/>

</xsl:variable>

<tr> <td>Firstname: </td>

<td><input name="firstname" type="text" size="20" maxlength="40" value="{$fname}"/></td>

</tr>

Chapter 11. Light weight XML-based Enterprise Application 269