Question

I need to test whether the predicate object matches the exchange for various expression languages. I need to know what exchange value I need to set in exchange to validate the predicate.

public void test() { 
   String expression="//orders/value>10"'; 
   CamelContext context = new DefaultCamelContext(); 
   Predicate predicate=new JXpathExpression(expression,boolean.class); 
   Exchange exchange = new DefaultExchange(context); 
   Message in = exchange.getIn(); 
   in.setBody(""); // how i need to set the message in exchange in order to evaluate it against predicate 
   exchange.setIn(in); 
   boolean check=predicate.matches(exchange); 
} 

For JXPath the predicate object contains JXpath[//orders/value>10] when I print it using predicate.toString().

How do I set the exchange so that this expression can be validated?

Answer 1

JXPath works on java objects. So you have to set a suitable object in the message body.
If the object you set there has o.getOrders().getValue() and returns a numeric value > 10 then the predicate should evaluate to true.