[LANG-917] Exception when combining custom and choice format in ExtendedMessageFormat

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.5, 2.6
• Fix Version/s: 3.2
• Component/s: lang.text.*
• Labels: patch
• Assignee: Unassigned
• Reporter: Arne Burmeister
• Created: 17/Sep/13 07:32
• Updated: 24/Oct/13 20:54
• Resolved: 24/Oct/13 20:54

Description

When using a custom format registered and a choice format with an inner format is used in the same message format, an IndexOutOfBoundsException occurs in the custructor of ExtendedMessageFormat:

new ExtendedMessageFormat("Hi {0,test,any}, got {1,choice,0#none|1#one|1<{1,number}}", Collections.singletonMap("test", new TestFormatFactory()));

java.lang.IndexOutOfBoundsException: Index: 2, Size: 2
	at java.util.ArrayList.rangeCheck(ArrayList.java:604)
	at java.util.ArrayList.get(ArrayList.java:382)
	at org.apache.commons.lang.text.ExtendedMessageFormat.insertFormats(ExtendedMessageFormat.java:364)
	at org.apache.commons.lang.text.ExtendedMessageFormat.applyPattern(ExtendedMessageFormat.java:192)
	at org.apache.commons.lang.text.ExtendedMessageFormat.<init>(ExtendedMessageFormat.java:127)

The problem occurs at the start of {1,number}.

As a workaround i registered the TestFormatFactory also for "choice" and then returning new ChoiceFormat(arguments), but that is not the idea.

I also checked the change logs, but there seems no change on this problem. I have not tester, but I think the bug still is present in the current release.