在Groovy中分配对象属性的速记方式？

Question

我创建一个使用这个惯例Groovy对象...

Item item1 = new Item(name: "foo", weight: "150") 

...有操纵性对象的速记惯例？这样的事情...

item1(name: "hello", weight: "175") //this does not work, btw ;-) 

...而不是...

item1.name = "hello" 
item1.weight = "175" 

Answer 1

你有with方法，as described by the great Mr Haki

item1.with{ 
    name = "hello" 
    weight = "175" 
} 

Answer 2

是的，你可以像下面这样做：

item1.metaClass.setProperties(item1, [name: "hello", weight: "175"]) 

Answer 3

我更喜欢item1.with如果我有混凝土变量发生变化

item1.with { 
    name = "lalal" 
    weight = 86 
    high = 100 
} 

我更喜欢InvokerHelper.setProperties当我有特性的图（可以是任何大小）

@ToString 
class Item{ 
    def name 
    def weight 
} 
Item item1 = new Item(name: "foo", weight: "150") 

println "before: $item1" 
use(InvokerHelper) { 
    item1.setProperties weight: 22, name: "abc" 
} 
println "after : $item1" 

输出：

before: Item(foo, 150) 
after : Item(abc, 22)