Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

support nested property filters

See original GitHub issue

Problem: If there is a class say Person

class Person {
   string name;
   int age;
   Address address;

   .. getters and setters

How do we dynamically filter specific nested properties: name, address.state, address.zipcode reusing the same object mapper/writer.

One way is to follow the Spring integration to use property filter However, nested property filters are not supported. This is because of the way Jackson integration works. This is a very common use case to get only the fields clients are interested in runtime.

There are a few implementations already available that are slow because they lookup the jgen root context to build the nested path every time a property is checked if it can be filtered. These implementations also won’t work without explicitly adding JsonFilter annotation on all classes that will be filtered:

The following won’t work without @JsonFilter(“antPathFilter”) on all classes

objectMapper.addMixIn(Object.class, AntPathFilterMixin.class);
filter = new SimpleFilterProvider()
                    new AntPathPropertyFilter("nestedObj", "nestedObj.nestedProperty")

One work around is to explicitly set the same @JsonFilter(“antPathFilter”) on all classes that are nested, which did not make any sense to me. What if I wanted to support multiple filters at the same time tomorrow?

I also ended up writing my own implementation that is fast and that uses SimplePropertyFilter per class built on the nested properties.

The problem really is the way Jackson APIs requests a filter for current property without any context on the current class owning that property.

Issue Analytics

  • State:closed
  • Created 8 years ago
  • Comments:5 (1 by maintainers)

github_iconTop GitHub Comments

manojkr001commented, Aug 22, 2020

It has been a long time since this above question has raised. Any update on support of nested object property filters using Jackson @JsonFilter. @cowtowncoder

Read more comments on GitHub >

github_iconTop Results From Across the Web

support nested property filters · Issue #1040 - GitHub
How do we dynamically filter specific nested properties: name, address.state, address.zipcode reusing the same object mapper/writer.
Read more >
NestedFilters - Amazon SageMaker - AWS Documentation
A list of nested Filter objects. A resource must satisfy the conditions of all filters to be included in the results returned from...
Read more >
Filter nested Object property uisng @JsonFilter - Stack Overflow
I want to filter the properties of Employee and its nested object Address ... update on the support of nested object properties by...
Read more >
filtering collection of nested property - DevExpress Support
Hi, I have a situation where I want to filter collection of objects which contain again collection of other objects.
Read more >
nested-object-filter - npm
This package allows you to filter nested javascript object regardless how nested the object is. You specify an array of nested arrays to ......
Read more >

github_iconTop Related Medium Post

No results found

github_iconTop Related StackOverflow Question

No results found

github_iconTroubleshoot Live Code

Lightrun enables developers to add logs, metrics and snapshots to live code - no restarts or redeploys required.
Start Free

github_iconTop Related Reddit Thread

No results found

github_iconTop Related Hackernoon Post

No results found

github_iconTop Related Tweet

No results found

github_iconTop Related Post

No results found

github_iconTop Related Hashnode Post

No results found