[jbossseam-issues] [JBoss JIRA] Created: (JBSEAM-624) Interpolator class does not handle null argument arrays and arrays with only one argument

[Frank Ulbricht (JIRA)]

Interpolator class does not handle null argument arrays and arrays with only one argument
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                 Key: JBSEAM-624
                 URL: http://jira.jboss.com/jira/browse/JBSEAM-624
             Project: JBoss Seam
          Issue Type: Bug
            Reporter: Frank Ulbricht


In method Interpolator.interpolate(String, Object...) are two possible bugs:

1. If the params arrays is null the method throws a NullPointerException. The array originally comes from the method FacesMessages.addFromResourceBundle(String, Object...). If the method is called without arguments, like addFromResourceBundle("some_key") then Java will automatically create an array with length zero and everything works fine. But if the application get this array from somewhere else, and it is null, the problem begins.

2. If there is only one element in the array the params will not be formatted to the message at all. This is because of the line: 

if ( params.length>1 && string.indexOf('{')>=0 ) ...

should be:

if ( params.length>0 && string.indexOf('{')>=0 ) ...

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