RFR(JDK 13/java.xml) 8220818: Validator does not find missing match for keyref error

[Lance Andersen]

Hi Joe, 

the change looks OK as does the test.

> On May 1, 2019, at 12:46 PM, Joe Wang <huizhe.wang at oracle.com> wrote:
> 
> Please review a fix for a regression introduced during JDK 9 development. The issue was that a patch ported to the JDK added a counter to count the number of values found in the XML document, and then compared with the constraint's field count. The problem was that the counter would get updated as the validator parsed through the XML document. When the XML contains multiple elements, the counter reflected the last one. If the last one didn't have the problem field, then errors in previous elements wouldn't get reported. The fix is to add a field to indicate whether the field exists in any of the elements.
> 
> All tests and the new test that covers both cases in the original patch and that reported in the JBS passed.
> 
> JBS: https://bugs.openjdk.java.net/browse/JDK-8220818
> webrevs: http://cr.openjdk.java.net/~joehw/jdk13/8220818/webrev/
> 
> Thanks,
> Joe

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 <http://oracle.com/us/design/oracle-email-sig-198324.gif>Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037
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