[jira] [Created] (FLINK-13915) Add class for DocWordSplitCount.

[Shang Yuanchun (Jira)]

Xu Yang created FLINK-13915:
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             Summary: Add  class  for  DocWordSplitCount.
                 Key: FLINK-13915
                 URL: https://issues.apache.org/jira/browse/FLINK-13915
             Project: Flink
          Issue Type: Sub-task
          Components: Library / Machine Learning
            Reporter: Xu Yang


DocWordSplitCount  is  TableFunction  to  split  the  document  and  return  word  count.
 * Add  DocWordSplitCount  for  the  operation  of  the  DocWordSplitCount.
 * Add  DocWordSplitCountTest  for  the  test  example.



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