@Documented @Retention(RetentionPolicy.SOURCE) @Target({ElementType.LOCAL_VARIABLE}) @GroovyASTTransformationClass("org.codehaus.groovy.transform.FieldASTTransformation") public @interface Field
Variable annotation used for changing the scope of a variable within a script from being within the run method of the script to being at the class level for the script.
The annotated variable will become a private field of the script class. The type of the field will be the same as the type of the variable. Example usage:
import groovy.transform.Field
@Field List awe = [1, 2, 3]
def awesum() { awe.sum() }
assert awesum() == 6
In this example, without the annotation, variable awe would be
a local script variable (technically speaking it will be a local variable within
the run method of the script class). Such a local variable would
not be visible inside the awesum method. With the annotation,
awe becomes a private List field in the script class and is
visible within the awesum method.