Working with Both xsl:if and xsl:choose in XSLT - Other scenarios
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In all of the previous examples, we worked with several conditions based on the data. But "xsl:if" is not meant only for conditions. It can also be used to test whether or not there exist any nodes/sub-nodes/leaves etc. under the current node.
For example, the following displays a message if the current "context" has any child elements named "dept no."
<xsl:if test="Deptno">
Got at least one Deptno as child element.
</xsl:if>
And not only that, you can also count the number of child elements using the following code fragment:
<xsl:if test="count(Deptno) = 1">
Got only one Deptno as child element
</xsl:if>
Similarly, if you wanted to work with attribute values rather than text, you can provide attribute names preceded with "@". The following code shows an example:
<xsl:if test="@Sal < '2000')">
Salary is less than 2000 is "1667".
</xsl:if>
In all the above cases, I simply mentioned "xsl:if." The same points apply to "xsl:choose."
I hope you enjoyed the article and any comments, suggestions, feedback, bugs, errors, enhancements etc. are highly appreciated at http://jagchat.spaces.live.com
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