[CONFIGURATION-561] Configuration.getList signature incorrect and incompatible change

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Duplicate
• Affects Version/s: 1.8, 1.9
• Labels: easyfix newbie

Environment

Linux 3.12.2, Oracle JDK 7u40

• Assignee: Unassigned
• Reporter: Konstantin Gribov
• Created: 10/Dec/13 17:11
• Updated: 10/Dec/13 17:25
• Resolved: 10/Dec/13 17:25

Description

In commons-configuration 1.7 Configuration.getList had signature:

public List getList(String key, List defaultValue)

But it was changed in 1.8 to:

public List<Object> getList(String key, List<Object> defaultValue)

So something like this:

Configuration conf = ...; // some configuration
List<String> defaults = ...; // some default value

List<Object> value = conf.getList("id", defaults);

will fail at compile-time.

To fix this signature should change to

public List<Object> getList(String key, List<? extends Object> defaultValue)

in Configuration and all its implementations.

Issue Links

• is cloned by: CONFIGURATION-558 Configuration no longer accepts List<String> as default for getList()