The Velocity if element is used to put forth a conditional test in Velocity. See the Apache Velocity If - ElseIf section for details
Conditions:
|
Equals Number |
== |
eq |
#if( $foo == 42 ) |
|
Equals String |
== |
eq |
#if( $foo == "bar" ) |
|
Object Equivalence |
== |
eq |
#if( $foo == $bar ) |
|
Not Equals |
!= |
ne |
#if( $foo != $bar ) |
|
Greater Than |
> |
gt |
#if( $foo > 42 ) |
|
Less Than |
< |
lt |
#if( $foo < 42 ) |
|
Greater Than or Equal To |
>= |
ge |
#if( $foo >= 42 ) |
|
Less Than or Equal To |
<= |
le |
#if( $foo <= 42 ) |
|
Boolean NOT |
! |
not |
#if( !$foo ) |
The code below will only output the title and artist elements of the CDs that has a price that is higher than 10.
<h2>My CD Collection</h2>
<table style="border: 3px solid #450084">
<tr style="background:#ccc999">
<th style="text-align:left">Title</th>
<th style="text-align:left">Artist</th>
</tr>
#set($cds = $_XPathTool.selectNodes($contentRoot, '//catalog/cd'))
#foreach($cd in $cds) ##LOOP
#set ($artist = $cd.getChild('artist').value)
#set ($title = $cd.getChild('title').value)
#set ($pricetext = $cd.getChild('price').value)
#set ($price = $_MathTool.toDouble($pricetext) )
#if( $price > 10 )
<tr>
<td>$title</td>
<td>$artist - $pricetext</td>
</tr>
#end ##IF
#end ##LOOP
</table>
My CD Collection
| Title | Artist |
|---|---|
| Empire Burlesque | Bob Dylan - 10.90 |
| Still got the blues | Gary Moore - 10.20 |
| One night only | Bee Gees - 10.90 |
| Romanza | Andrea Bocelli - 10.80 |
| Black angel | Savage Rose - 10.90 |
| 1999 Grammy Nominees | Many - 10.20 |
