覆盖grails域类中的getter和setter以获取关系

本文介绍了覆盖grails域类中的getter和setter以获取关系的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 限时删除！！ 如何重写getter和setter作为grails领域类中的一对多关系的字段？我知道如何覆盖作为单个对象的字段的getters和setter，但我对Collections有问题。这是我的情况： 我有Entity域类，它有很多标题。现在我想重写标题的getter以获得只有标志isActive等于true的标题。我试过类似的东西，但它不起作用： class实体{ static hasMany = [标题：标题] 公共设置<标题> getTitles（）{ if（titles == null） return null return titles.findAll {r - > r.isActive == true} } public void setTitles（Set< Title> s）{ titles = s } } 类标题{布尔isActive 静态belongsTo = [实体：实体] 静态映射= { isActive列： 'is_active' isActive type：'yes_no'} } 解决方案需要参考 Set< Title> title 。 class实体{ Set< Title> title static hasMany = [ titles：Title ] public Set< Title> getTitles（）{ if（titles == null） return null; return titles.findAll {r - > r.isActive == true} } public void setTitles（Set< Title> s）{ titles = s } } How to override getter and setter for field being a relation one-to-many in grails domain class? I know how to override getters and setters for fields being an single Object, but I have problem with Collections. Here is my case:I have Entity domain class, which has many titles. Now I would like to override getter for titles to get only titles with flag isActive equals true. I've tried something like that but it's not working:class Entity { static hasMany = [ titles: Title ] public Set<Title> getTitles() { if(titles == null) return null return titles.findAll { r -> r.isActive == true } } public void setTitles(Set<Title> s) { titles = s }}class Title { Boolean isActive static belongsTo = [entity:Entity] static mapping = { isActive column: 'is_active' isActive type: 'yes_no' }}Thank You for your help. 解决方案 Need the reference Set<Title> titles.class Entity { Set<Title> titles static hasMany = [ titles: Title ] public Set<Title> getTitles() { if(titles == null) return null; return titles.findAll { r -> r.isActive == true } } public void setTitles(Set<Title> s) { titles = s }} 这篇关于覆盖grails域类中的getter和setter以获取关系的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 1403页，肝出来的..