StackOverflowError when converting nested Lists [SPR-7289]

[spring-projects-issues]

Oliver Becker opened SPR-7289 and commented

The following simple unit test demonstrates the problem:

ConversionService service = ConversionServiceFactory.createDefaultConversionService();
List<List<String>> list = Collections.singletonList(Collections.singletonList("Foo"));
Assert.assertNotNull(service.convert(list, String.class));

Most probably the problem stems from the changed method in TypeDescriptor

public synchronized TypeDescriptor getElementTypeDescriptor() {
if (this.elementType == null) {
this.elementType = forElementType(resolveElementType());
}
return this.elementType;
}

and the fact that forElementType returns this in this case.

---

Affects: 3.0.3

Issue Links:

• TypeDescriptor.forElementType() is broken for nested collections [SPR-7562] #12219 TypeDescriptor.forElementType() is broken for nested collections ("is duplicated by")

Referenced from: commits 27b0403

[spring-projects-issues]

Juergen Hoeller commented

Fixed for 3.0.4 - will be available in tonight's 3.0.4 snapshot. Please give it an early try and let us know whether it works for you (again)!

Juergen