Groovy Documentation

## groovy.transform
[Java] Annotation Type TupleConstructor

    java.lang.Object
      groovy.transform.TupleConstructor

    @Retention(RetentionPolicy.RUNTIME)
    @Target({ElementType.TYPE})
    @GroovyASTTransformationClass("org.codehaus.groovy.transform.TupleConstructorASTTransformation")
    public @interface TupleConstructor

Class annotation used to assist in the creation of tuple constructors in classes.

It allows you to write classes in this shortened form:

     @TupleConstructor class Customer {
         String first, last
         int age
         Date since
         Collection favItems
     }
     def c1 = new Customer(first:'Tom', last:'Jones', age:21, since:new Date(), favItems:['Books', 'Games'])
     def c2 = new Customer('Tom', 'Jones', 21, new Date(), ['Books', 'Games'])
     def c3 = new Customer('Tom', 'Jones')

The `@TupleConstructor` annotation instructs the compiler to execute an AST transformation which adds the necessary constructor method to your class.

A tuple constructor is created with a parameter for each property (and optionally field and super properties). A default value is provided (using Java's default values) for all parameters in the constructor. Groovy's normal conventions then allows any number of parameters to be left off the end of the parameter list including all of the parameters - giving a no-arg constructor which can be used with the map-style naming conventions.

The order of parameters is given by the properties of any super classes with most super first (if `includeSuperProperties` is set) followed by the properties of the class followed by the by the fields of the class (if `includeFields` is set). Within each grouping the order is as attributes appear within the respective class.

Limitations: currently not designed to support inner classes.

Authors:
  Paul King

Since:
  1.8.0

Optional Element Summary
`boolean` | `callSuper` Should super properties be called within a call to the parent constructor.
`java.lang.String[]` | `excludes` List of field and/or property names to exclude from the constructor.
`boolean` | `force` By default, this annotation becomes a no-op if you provide your own constructor.
`boolean` | `includeFields` Include fields in the constructor.
`boolean` | `includeProperties` Include properties in the constructor.
`boolean` | `includeSuperFields` Include fields from super classes in the constructor.
`boolean` | `includeSuperProperties` Include properties from super classes in the constructor.
`java.lang.String[]` | `includes` List of field and/or property names to include within the constructor.

Method Summary

Methods inherited from class java.lang.Object
java.lang.Object#wait(long), java.lang.Object#wait(long, int), java.lang.Object#wait(), java.lang.Object#equals(java.lang.Object), java.lang.Object#toString(), java.lang.Object#hashCode(), java.lang.Object#getClass(), java.lang.Object#notify(), java.lang.Object#notifyAll()

Element Detail

### callSuper

    public boolean callSuper

  Should super properties be called within a call to the parent constructor. rather than set as properties @default false

### excludes

    public java.lang.String[] excludes

  List of field and/or property names to exclude from the constructor. Must not be used if 'includes' is used. For convenience, a String with comma separated names can be used in addition to an array (using Groovy's literal list notation) of String values. @default {}

### force

    public boolean force

  By default, this annotation becomes a no-op if you provide your own constructor. By setting `force=true` then the tuple constructor(s) will be added regardless of whether existing constructors exist. It is up to you to avoid creating duplicate constructors. @default false

### includeFields

    public boolean includeFields

  Include fields in the constructor. @default false

### includeProperties

    public boolean includeProperties

  Include properties in the constructor. @default true

### includeSuperFields

    public boolean includeSuperFields

  Include fields from super classes in the constructor. @default false

### includeSuperProperties

    public boolean includeSuperProperties

  Include properties from super classes in the constructor. @default false

### includes

    public java.lang.String[] includes

  List of field and/or property names to include within the constructor. Must not be used if 'excludes' is used. For convenience, a String with comma separated names can be used in addition to an array (using Groovy's literal list notation) of String values. @default {}

Groovy Documentation