jython functions can use the @outputSchema decorator, but only if in the out
script that is imported, we should add a builting module pigdecorators.py so
that developers can import and use them in lib scripts
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Key: PIG-1943
URL: https://issues.apache.org/jira/browse/PIG-1943
Project: Pig
Issue Type: Improvement
Components: impl
Affects Versions: 0.8.0, 0.9.0
Reporter: Woody Anderson
Assignee: Woody Anderson
Priority: Minor
Fix For: 0.9.0
if you have pig udf functions in a pig script, and want to re-use it (i.g.
import from another script) the decorators must be defined. They will not be,
due to scoping rules, so the decorators should be available via a standard
importable module that ships with the jython framework (as we already define
the decorators as part of initializing the interpreter).
this simply involves adding an appropriately named: pigdecorators.py to the
classpath, so a dev can do:
{quote}
from pigdecorators import *
@outputSchema("w:chararray")
def word():
return 'word'
{quote}
this can be done currently in the primary script, but when
https://issues.apache.org/jira/browse/PIG-1824 is completed, that script would
not properly import when used within another script in the future.
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