To use different expression and predicates in your IDE you need to perform a static import of the builder class for the language(s) you wish to use.

Language(s)

Builder class to import

Scripting Languages such as BeanShell, JavaScript, Groovy, PHP, Python and Ruby

org.apache.camel.builder.script.ScriptBuilder

SQL

org.apache.camel.builder.josql.SqlBuilder

XPath

org.apache.camel.builder.xml.XPathBuilder

XQuery

org.apache.camel.builder.saxon.XQueryBuilder