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For example you could use the groovy function to create an Predicate in a Message Filter or as an Expression for a Recipient List

Customizing Groovy Shell

Sometimes you may need to use custom GroovyShell instance in your Groovy expressions. To provide custom GroovyShell, add implementation of the org.apache.camel.language.groovy.GroovyShellFactory SPI interface to your Camel registry. For example after adding the following bean to your Spring context...

public class CustomGroovyShellFactory implements GroovyShellFactory {
 
  GroovyShell createGroovyShell(Exchange exchange) {
    ImportCustomizer importCustomizer = new ImportCustomizer()
    importCustomizer.addStaticStars 'com.example.Utils'
    CompilerConfiguration configuration = new CompilerConfiguration()
    configuration.addCompilationCustomizers(importCustomizer)
    return new GroovyShell(configuration)
  }


}

...Camel will use your custom GroovyShell instance (containing your custom static imports), instead of the default one.

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")

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