Package groovy.lang

Annotation Type Grapes

@Retention(SOURCE) public @interface Grapes
Sometimes we will need more than one grab per class, but we can only add one annotation type per annotatable node. This class allows for multiple grabs to be added.

For example: 

 @Grapes([@Grab(module='m1'), @Grab(module='m2')])
 class AnnotatedClass { ... }

You can override an implicit transitive dependency by providing an explicit one. E.g. htmlunit 2.6 normally uses xerces 2.9.1 but you can get 2.9.0 as follows: 

 @Grapes([
     @Grab('net.sourceforge.htmlunit:htmlunit:2.6'),
     @Grab('xerces#xercesImpl;2.9.0')
 ])
Obviously, only do this if you understand the consequences.

You can also remove transitive dependencies altogether (provided you know you don't need them) using @GrabExclude. For example, here is how we would not grab the logkit and avalon-framework transitive dependencies for Apache POI: 

 @Grapes([
   @Grab("org.apache.poi#poi;3.5-beta6"),
   @GrabExclude("logkit:logkit"),
   @GrabExclude("avalon-framework#avalon-framework")
 ])
 import org.apache.poi.hssf.util.CellReference
 assert new CellReference(0, 0, false, false).formatAsString() == 'A1'
 assert new CellReference(1, 3).formatAsString() == '$D$2'
It is also sometimes also useful to use @GrabConfig to further adjust how dependencies are grabbed. See @GrabConfig for further information.

  • Required Element Summary

    Required Elements
    Modifier and Type
    Required Element
    Description
    Grab[]
    value
     

  • Optional Element Summary

    Optional Elements
    Modifier and Type
    Optional Element
    Description
    boolean
    initClass
    This will be pushed into the child grab annotations if the value is not set in the child annotation already.

  • Element Details

    • value

      Grab[] value

    • initClass

      boolean initClass
      This will be pushed into the child grab annotations if the value is not set in the child annotation already.

      This results in an effective change in the default value, which each @Grab can still override

      Default:
      true