Groovy
Camel supports Groovy among other Scripting Languages to allow an Expression or Predicate to be used in the DSL or Xml Configuration.
To use a Groovy expression use the following Java code
import static org.apache.camel.builder.script.ScriptBuilder.*; ... ... groovy("someGroovyExpression") ...
For example you could use the groovy function to create an Predicate in a Message Filter or as an Expression for a Recipient List
Example
// lets route if a line item is over $100 from("queue:foo").filter(groovy("request.lineItems.any { i -> i.value > 100 }")).to("queue:bar")