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Posted to issues@commons.apache.org by "Steven Paligo (JIRA)" <ji...@apache.org> on 2018/03/16 05:03:00 UTC

[jira] [Created] (CONFIGURATION-691) ExprLookup only works for expressions that evaluate to strings

Steven Paligo created CONFIGURATION-691:
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             Summary: ExprLookup only works for expressions that evaluate to strings
                 Key: CONFIGURATION-691
                 URL: https://issues.apache.org/jira/browse/CONFIGURATION-691
             Project: Commons Configuration
          Issue Type: Improvement
          Components: Interpolation
    Affects Versions: 2.2
            Reporter: Steven Paligo


ExprLookup only works when the expression evaluates to a string. The doLookup(...) method casts the result to a string, which triggers a ClassCastException when it isn't.

This is unnecessary. The Lookup interface allows for any object to be returned. Also, non-string expressions are entirely useful.



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