Grails 如何创建包含对象属性的类的实例

我有以下课程：

class Team{
    String name
    boolean club
}

class Result{
    int goals1
    int goals2
}


class SingleMatch {
    Team team1
    Team team2
    Date startDate
    Result firstHalfResult
    Result secondHalfResult
    Result extraTimeResult
    Result penaltyResult
}

我试图在BootStrap.groovy中实例化这些类。但是我不知道如何实例化SingleMatch类

Team _team1 = new Team(name: "Fiorentina",club: true) 
Team _team2 = new Team(name:"Juventus",club: true)

Result a = new Result(goals1: 1, goals2: 0) 
Result b = new Result(goals1: 0, goals2: 2) 
Result c = new Result(goals1: 1, goals2: 0) 
Result d = new Result(goals1: 5, goals2: 4)

SingleMatch match1 = new SingleMatch(team1: _team1, team2: _team2, startDate: new Date(), firstHalfResult: a, secondHalfResult: b, extraTimeResult: c, penaltyResult: d)

这是正确的方法吗？

先尝试保存

Team _team1 = new Team(name: "Fiorentina",club: true) 
Team _team2 = new Team(name:"Juventus",club: true)
_team1.save()

_team2 .save()


Result a = new Result(goals1: 1, goals2: 0) 
Result b = new Result(goals1: 0, goals2: 2) 
Result c = new Result(goals1: 1, goals2: 0) 
Result d = new Result(goals1: 5, goals2: 4)
a.save()

b.save()

c.save()

d.save()

SingleMatch match1 = new SingleMatch(team1: _team1, team2: _team2, startDate: new Date(), firstHalfResult: a, secondHalfResult: b, extraTimeResult: c, penaltyResult: d)

match1.save();

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您尝试过的是否不起作用？可能会出现错误，因为尚未保存团队和结果对象。如果您保存了团队和结果对象，那么您应该没事了。也就是说，我可能会以不同的方式对数据建模，但每次只会出现一个问题。：）谢谢Gregg，这很有效！您将如何对数据建模？：）