How to print an empty list?

[GuilhermeCamposo]

I'm using JSLT 0.1.11 with Apache Camel and this is my spec:

{
  "account" : $exchange.properties.account,
  "lineItems": $exchange.properties.line-items,
  "opportunity": $exchange.properties.trigger
}

lineItems, for example, can be an empty list but when that happens the field is omitted from the result. Am I missing something?

[GuilhermeCamposo]

https://github.com/schibsted/jslt/blob/master/core/src/main/java/com/schibsted/spt/data/jslt/impl/ObjectExpression.java#L90

I can see here that empty lists([]) are filtered

[larsga]

When you set up JSLT processing you can change the filter that's used to get exactly the behaviour that you want. In Apache Camel this is the objectFilter config option, although I'm not sure exactly how you can set it.

[GuilhermeCamposo]

Thanks. I will look for those instructions in the Apache Camel community.