[CONFIGURATION-692] Preserve ConversionException cause

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.2
• Fix Version/s: 2.3
• Component/s: Type conversion
• Assignee: Unassigned
• Reporter: Lars W
• Created: 22/Mar/18 17:10
• Updated: 08/Aug/18 20:28
• Resolved: 24/Mar/18 19:58

Description

When improving the error message of the ConversionException thrown by the ConversionHandler in AbstractConfiguration.java:1768 the cause is lost.

If for example a string is converted into a URL the MalformedURLException, that contains the actual reason for the failed conversion, is gone.

A possible fix for that could be to attach the cause to the new ConversionException:

AbstractConfiguration.java:1768:

throw new ConversionException(
        String.format(
                "Key '%s' cannot be converted to class %s. Value is: '%s'.",
                key, cls.getName(), String.valueOf(value)), cex.getCause());