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