RFR: 8169772: [JAXP] XALAN: Transformation of DOM with null valued text node causes NPE

[Joe Wang]

Looks fine.

License header: in general, don't change / add Year if there's no 
material change, removing the legacy $Id field in EmptySerializer.java 
for example, does not constitute a change to the code, so just keep the 
original year (see below).

      The initial years for the classes:
             EmptySerializer.java 2012
             SerializerBase.java 2012
ToSAXHandler.java none (meaning if you make changes to this class, just 
add 2016)
             ToStream.java 2006
             ToUnknownStream.java 2007
             XSLOutputAttributes.java none (so keep the original "DO NOT 
REMOVE OR ALTER!" block)

Thanks,
Joe

On 11/16/16, 6:22 AM, Langer, Christoph wrote:
> Hi,
>
> please review another XALAN fix.
>
> The Serializer should be able to handle text nodes with null input. There has already been some discussion here: http://mail.openjdk.java.net/pipermail/core-libs-dev/2016-November/044567.html
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8169772
> Webrev: http://cr.openjdk.java.net/~clanger/webrevs/8169772.0/
>
> The actual fix is in ToUnknownStream.java, method "public void characters(String chars) throws SAXException". I don't know if one should even directly return after chars being null or of size() 0. The rest of this change is cleanups and a test case.
>
> Thanks for reviewing.
>
> Best regards
> Christoph
>