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Standard converters throws NPE when calling canConvert() with 'null' type #116

dariusz-michura opened this issue May 22, 2018 · 1 comment


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commented May 22, 2018

I had to implement my own ConverterLookup which iterates over standard set of converters plus some dedicated ones. I noticed that some of standard converters throws NPE when calling canConvert() with 'null' type. IMHO they should just return 'false' in that case.

Problematic converters:

  • com.thoughtworks.xstream.converters.SingleValueConverterWrapper
  • com.thoughtworks.xstream.converters.basic.CharConverter
  • com.thoughtworks.xstream.converters.collections.BitSetConverter
  • com.thoughtworks.xstream.converters.collections.ArrayConverter
  • com.thoughtworks.xstream.converters.collections.CharArrayConverter
  • com.thoughtworks.xstream.converters.collections.CollectionConverter
  • com.thoughtworks.xstream.converters.collections.MapConverter
  • com.thoughtworks.xstream.converters.collections.TreeMapConverter
  • com.thoughtworks.xstream.converters.collections.TreeSetConverter
  • com.thoughtworks.xstream.converters.extended.EncodedByteArrayConverter
  • com.thoughtworks.xstream.converters.extended.DynamicProxyConverter
  • com.thoughtworks.xstream.converters.extended.JavaMethodConverter
  • com.thoughtworks.xstream.converters.extended.JavaFieldConverter
  • com.thoughtworks.xstream.converters.extended.FontConverter
  • com.thoughtworks.xstream.converters.extended.ColorConverter
  • com.thoughtworks.xstream.converters.extended.LookAndFeelConverter
  • com.thoughtworks.xstream.converters.extended.GregorianCalendarConverter
  • com.thoughtworks.xstream.converters.extended.SubjectConverter
  • com.thoughtworks.xstream.converters.extended.ThrowableConverter
  • com.thoughtworks.xstream.converters.extended.RegexPatternConverter
  • com.thoughtworks.xstream.converters.enums.EnumConverter
  • com.thoughtworks.xstream.converters.enums.EnumSetConverter
@joehni joehni self-assigned this Jun 7, 2018
@joehni joehni added the improvement label Jun 7, 2018
@joehni joehni added this to the 1.4.x milestone Jun 7, 2018

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commented Jun 7, 2018

Traditionally the converters never checked for null. However, it does not harm and I added these checks now. There have been more converters though.

@joehni joehni closed this in 55c707a Jun 7, 2018
joehni added a commit that referenced this issue Jun 7, 2018
@joehni joehni modified the milestones: 1.4.x, 1.4.11 Oct 22, 2018
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