[CONFIGURATION-55] [configuration] Interpolation with multivalued keys returns nested strings instead of flattend string and interpolate doesn't work with all getters

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.1

Environment

Operating System: other
Platform: Other

• Bugzilla Id: 36819
• Assignee: Unassigned
• Reporter: Michael Echerer
• Created: 27/Sep/05 05:26
• Updated: 16/May/06 12:09
• Resolved: 16/May/06 12:09

Description

I tried these properties with Configuration 1.1 stable (a
PropertiesConfiguration in a CompositeConfiguration, but that shouldn't matter)

z=1,2,3,${x},7,8
x=4,${y}
y=5,6

If queried using getStringArray("z") etc. this results in:
e.g. something like

String[] z = config.getStringArray("z");
for (int i = 0; i < z.length; i++) {
System.out.println(z[i].toString());
}

1
2
3
[4, [5, 6]]
7
8

Note brackets and nesting!
I guess it would be better to flatten such multivalued keys without
brackets,commas and spaces e.g. the result should look like (note: this is
already formated a bit)
x = 4,5,6
y = 5,6
z = 1,2,3,4,5,6,7,8

Also note that commons-configuration-src-20050926.zip nightly build behaves
different, here the result was (also preformated):

x = [4, 5]
y = [5, 6]
z = [1, 2, 3, 4, 7, 8]

Looks as if only the first value is taken when interpolating...

—

Besides interpolate should get called for each getter.
a = ${b}
b = 5

One would expect config.getInt("a") == 5 instead of throwing an exception
because ${b} is no valid int. Of course, you can workaround by using
.getString("a") and converting manually, but this defeats the added value of all
different getters.