Aleksandr Chesnokov created IGNITE-28818:
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Summary: Fix IDTO code generation on JDK 21
Key: IGNITE-28818
URL: https://issues.apache.org/jira/browse/IGNITE-28818
Project: Ignite
Issue Type: Bug
Reporter: Aleksandr Chesnokov
Assignee: Aleksandr Chesnokov
IDTO serializer generation fails on JDK 21 for DTO fields where JetBrains
nullability annotations are applied to collection types, for example:
{noformat}
@NotNull Collection<ResolvedAddresses>
@Nullable List<List<TransactionsHashRecord>>{noformat}
On JDK 17, TypeMirror.toString() renders these types as:
{noformat}
@org.jetbrains.annotations.NotNull java.util.Collection<...>
@org.jetbrains.annotations.Nullable java.util.List<...>{noformat}
On JDK 21, javac renders them as:
{noformat}
[email protected] Collection<...>
[email protected] List<...>{noformat}
IDTOSerializerGenerator parsed TypeMirror.toString() to derive the class FQN.
With the JDK 21 format, the parser returned short names such as Collection/List
instead of java.util.Collection/java.util.List. This caused collection
implementation lookup to return null and the processor failed with:
{noformat}
Cannot invoke "String.lastIndexOf(int)" because "fqn" is null{noformat}
The failed processor run also produced invalid generated imports such as
import String, import Exception and import IdleVerifyResult, causing
compilation errors.
Use the annotation processing model API for declared types instead of parsing
TypeMirror.toString()
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