Search by null from query string parameters

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Joshua Chan

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Apr 20, 2016, 4:20:48 AM4/20/16

to Querydsl

I have a controller method for searching like so

@RequestMapping(method = RequestMethod.GET) 
public Page<MyEntity> find(@QuerydslPredicate(root = MyEntity.class) Predicate predicate, 
    Pageable pageable) { 
  return this.myEntityRepository.findAll(predicate, pageable); 
}

It works great. I can issue a GET request with various query string parameters, and it filters accordingly, but now I want to search by null. I tried doing something like /myentity?myParam1=&, but the predicate argument is always null.

How can I search where specific fields are null?

I also posted this on SO.

timowest

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Apr 20, 2016, 1:38:05 PM4/20/16

to Querydsl

Hi.

This seems to be Spring Data related. Could you post this question on their support forum? I don't know how to fix it.