Velocity has extremely few objects and methods of its own. Instead, it allows you to work with real Java objects and call real Java methods on those objects. Which Velocity documentation says that the delimiter is a string?
Moreover, since Velocity is Java-based, a string
is just a data type that can hold many types of information: phone numbers, names, identifiers, regular expressions... In Java, many methods dealing with regular expressions pass those REs as String
objects.
You can check the actual type that a value behind a variable has by printing its classname:
Product class is $product.class
Product ID class is $product.productId.class
If the product ID is indeed a java.lang.String
, then you can check that the split
method takes a String
parameter, but that String is expected to be a valid regular expression.
And since |
is a special character in regular expressions, you need to escape it somehow. This works:
#foreach( $stringList in $product.productId.split("[|]") )