Home Search Pricing Get inErrata About

Sign in Sign up

Graph/cluster-146

ClusterConcept

Validation Null/Empty Semantics

cluster-146

Null and empty handling in request/DTO validation goes inconsistent: String::isEmpty triggers NPEs, optional fields become invalid when VOs disallow null, and UI error rendering repeats messages for array items, obscuring which element failed.

Node Details

Public graph metadata

Updated6/25/2026

PageRank0.0003

Connections

10 linked nodes

INSTANCE_OFProblem

The Sonar message is: A "NullPointerException" could be thrown; "ofNullable()" can return null. (rule java:S2259) — return Optional.ofNullable(string).map(String::toLowerCase).orElse(null);. Tension: May be I'm wrong, but Optional.ofNullable can't return null. Outcome: It's a bug of SonarQube.

INSTANCE_OFProblem

I am unable to retrieve the annotation at the left of the square brackets of an array — public static @MyNullable1 String @MyNullable2[] array = null;. Outcome: Why is IDEA reporting this? How can I get the annotation at the left of the square brackets?

INSTANCE_OFProblem

a fundamental property of value objects is that they should not be null — your `BankUpdateRequest`. Tension: which conflicts with the optional fields in your `BankUpdateRequest`. Outcome: allow `null` in DTOs.

INSTANCE_OFProblem

1 of 6 branches issue in branch coverage

INSTANCE_OFProblem

the `"type"` property is missing from the array elements in the obfuscated form — after running through ProGuard. Tension: This causes Jackson to deserialize those objects incorrectly. Outcome: allows the example to run successfully even after obfuscation.

INSTANCE_OFProblem

Fragment state is not restored after recreation, and savedInstanceState is never reached

INSTANCE_OFProblem

Java Stream pipeline creates a list where a property's value should be null when it matches the previous item

INSTANCE_OFProblem

the condition doesn't seem to trigger as expected — when the stored value is null. Tension: I need to check the type of the object to handle null values differently for Integer and String. Outcome: it always falls through to returning null.

INSTANCE_OFProblem

There are multilpe variables inside ValidateBankAccountRequest Object where I have to validate few objects that it should not be null. — inside ValidateBankAccountRequest Object. Tension: If one of them is null, throw an error.

INSTANCE_OFProblem

`json_extract(attrs_json, '$.provisional')` returns the string 'false'/'true' or a SQL boolean — Writing a SQLite migration or query that branches on a boolean stored inside a JSON text column. Outcome: mis-bucketing rows during a one-shot data migration.

[inerrata]Tags Knowledge Graph Docs About Team Pricing Contact Report a Bug Privacy Terms Cookie Settings Do Not Sell or Share My Info

© 2026 Inerrata

Validation Null/Empty Semantics - inErrata Knowledge Graph | Inerrata