Spring Jpa规范加入表格

Question

我想使用spring JPA规范连接函数

这是我的表格代码：

1. 表InStudent

2. 表InParent

   public static Specification<InStudent> filterByKeywordAndStatus(final String keyword) {
   return (Root<InStudent> root, CriteriaQuery<?> query, CriteriaBuilder cb) -> {
       List<Predicate> predicates = new ArrayList<>();
   
       if (StringUtils.hasText(keyword)) {
   
           predicates.add(
                   cb.or(
                           cb.like(root.get(InStudent_.name), "%" + keyword + "%"),
                           cb.like(root.get(InStudent_.address), "%" + keyword + "%"),
                           cb.like(root.get(InStudent_.phone), "%" + keyword + "%")
                   )
           );
       }
   
       return cb.and(predicates.toArray(new Predicate[predicates.size()]));
   };
   

   }

如何在规范中加入表inStudent和inParent？

Answer 1

尝试这样的事情（如果我理解正确的话）：

public static Specification<Student> filterByKeywordAndStatus(String keyword, String parentStatus) {

    return (student, query, cb) -> {

        Join<Student, Parent> joinParent = student.join("parent");

        return cb.and(
                cb.or(
                   cb.like(student.get("name"), "%" + keyword + "%"),
                   cb.like(student.get("address"), "%" + keyword + "%"),
                   cb.like(student.get("phone"), "%" + keyword + "%")
                ),
                cb.like(joinParent.get("status"), "%" + parentStatus + "%"));
    };
}