DO NOT REPLY [Bug 16502] New: - [configuration][patch] Enhancement: multiple interpolation

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=16502

[configuration][patch] Enhancement: multiple interpolation

           Summary: [configuration][patch] Enhancement: multiple
                    interpolation
           Product: Commons
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Enhancement
          Priority: Other
         Component: Sandbox
        AssignedTo: commons-dev@jakarta.apache.org
        ReportedBy: shapira@mpi.com


As posted by Jeff Barrett [JBarrett@sawyermedia.com]
Here's my original message w/ a more informative subject line and patches split 
up into different files, zipped up.

=======================================================
I don't have much experience sending patches, so please let me know if I could 
have sent this in a better way.

This patch does two things: 
1) fixes configuration so it builds w/ maven
2) adds support for multiple levels of interpolation

1)a) maven.xml had a bad variable reference that caused test.properties to be 
copied to the wrong place which caused TestClassPropertiesConfiguration to fail
1)b) project.xml had a bad unit test excludes that didn't exclude an abstract 
TestCase class

2)a) BaseConfiguration.java now supports multiple levels of interpolation.  for 
example:
base.prop = /base
first.prop = ${base.prop}/first
second.prop = ${first.prop}/second

second.prop now interpolates "/base/first/second" whereas before it 
interpolated to "${base.prop}/first/second".

Checks are also in place to catch the case of looping references, e.g.
prop.a=${prop.b}
prop.b=${prop.a}

2)b) TestBaseConfiguration.java has tests to check for proper behavior
2)c) BasePropertiesConfiguration.java now has class javadocs that note support 
for interpolation

+jeff

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