Improve dynamic invokers to deal with no-arg methods and array parameters
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Key: PIG-1551
URL: https://issues.apache.org/jira/browse/PIG-1551
Project: Pig
Issue Type: Improvement
Reporter: Dmitriy V. Ryaboy
PIG-1354 introduced a set of UDFs that can be used to dynamically wrap simple
Java methods in a UDF, so that users don't need to create trivial wrappers if
they are ok sacrificing some speed.
This issue is to extend the set of methods that can be wrapped this way to
include methods that do not take any arguments, and methods that take arrays of
{int,long,float,double,string} as arguments.
Arrays are expected to be represented by bags in Pig. Notably, this allows
users to wrap statistical functions in o.a.commons.math.stat.StatUtils .
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