MVEL

Projects with filters (WHERE clause)

Details

  • Type: Improvement Improvement
  • Status: Closed Closed
  • Priority: Major Major
  • Resolution: Fixed
  • Affects Version/s: 1.3.0
  • Fix Version/s: 2.0
  • Component/s: Core, Parser
  • Labels:
    None
  • Number of attachments :
    0

Description

Projections are nice, but I really need them to filter as well (like Python's generator comprehensions). The syntax would probably be something like "(foo.bar in baz if foo.passesFilter)". (Python uses "if"; "where" might also make sense for the SQL-inclined.)

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Mike Brock added a comment -

I think this is really a powerful idea, and I'm definitely going to begin researching it's inclusion into 2.0.

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Mike Brock added a comment - I think this is really a powerful idea, and I'm definitely going to begin researching it's inclusion into 2.0.
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Luke Maurer added a comment -

Oops - heh, I meant to type "projections", not "projects", in the summary. Ah well

Looking forward to 2.0 - seems like Drools stands to benefit a good deal!

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Luke Maurer added a comment - Oops - heh, I meant to type "projections", not "projects", in the summary. Ah well Looking forward to 2.0 - seems like Drools stands to benefit a good deal!
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Mike Brock added a comment -

fixed for beta2. example syntax: (toUpperCase() in ['zero', 'zen', 'bar', 'foo'] if ($ == 'bar'))

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Mike Brock added a comment - fixed for beta2. example syntax: (toUpperCase() in ['zero', 'zen', 'bar', 'foo'] if ($ == 'bar'))

People

  • Assignee:
    Mike Brock
    Reporter:
    Luke Maurer
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    Updated:
    Resolved: