[PIG-1943] 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

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 0.8.0, 0.9.0
• Component/s: impl
• Labels: pig python schema udf
• Assignee: Woody Anderson
• Reporter: Woody Anderson
• Created: 29/Mar/11 18:46
• Updated: 03/May/11 19:34

Description

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:

from pigdecorators import *
@outputSchema("w:chararray")
def word():
return 'word'

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.