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  • w

    witty-crayon-22786

    04/29/2016, 10:41 PM
    which results in Nodes/TaskNodes being created
  • b

    billowy-beach-68498

    04/29/2016, 10:41 PM
    so available tasks are registered at the beginning, right? when scheduler is created?
  • w

    witty-crayon-22786

    04/29/2016, 10:41 PM
    yep
  • w

    witty-crayon-22786

    04/29/2016, 10:42 PM
    actually, let me pause and clarify something
  • b

    billowy-beach-68498

    04/29/2016, 10:42 PM
    you said we create a node at the root,
  • b

    billowy-beach-68498

    04/29/2016, 10:42 PM
    ok?
  • w

    witty-crayon-22786

    04/29/2016, 10:42 PM
    the question is actually:
  • w

    witty-crayon-22786

    04/29/2016, 10:42 PM
    "does the Subject's type already match the Product type we're looking for? oh! it is! let's just use it"
  • w

    witty-crayon-22786

    04/29/2016, 10:43 PM
    that's an important link between Subjects and Products
  • w

    witty-crayon-22786

    04/29/2016, 10:43 PM
    you're trying to compute a particular Product type for a particular Subject
  • w

    witty-crayon-22786

    04/29/2016, 10:43 PM
    if the Subject is a instance of the Product already, then there is no conversion needed
  • w

    witty-crayon-22786

    04/29/2016, 10:44 PM
    so yea, that's what i was clarifying.
  • b

    billowy-beach-68498

    04/29/2016, 10:44 PM
    wait, subject can change types?
  • b

    billowy-beach-68498

    04/29/2016, 10:45 PM
    I thought we try to extract some products out of subject and then convert product all the way till we reach the wanted type?
  • b

    billowy-beach-68498

    04/29/2016, 10:45 PM
    isn’t that what select is doing?
  • b

    billowy-beach-68498

    04/29/2016, 10:45 PM
    select a product from a subject?
  • b

    billowy-beach-68498

    04/29/2016, 10:48 PM
    nvm, I see what you are saying
  • b

    billowy-beach-68498

    04/29/2016, 10:49 PM
    so what is the definition of subject after all? I feel like for every node, subject is the original input?
  • w

    witty-crayon-22786

    04/29/2016, 10:53 PM
    @billowy-beach-68498: DependenciesNode, ProjectionNode select a Product for some other Subject
  • w

    witty-crayon-22786

    04/29/2016, 10:54 PM
    each node has a single Subject
  • w

    witty-crayon-22786

    04/29/2016, 10:54 PM
    but a DependenciesNode is going to have dependencies on nodes for a bunch of other Subjects
  • w

    witty-crayon-22786

    04/29/2016, 10:55 PM
  • w

    witty-crayon-22786

    04/29/2016, 10:55 PM
    at "One very important thing to keep in mind..."
  • b

    billowy-beach-68498

    04/29/2016, 10:57 PM
    when I read that I was hoping to see something like “subject is …”
  • w

    witty-crayon-22786

    04/29/2016, 10:58 PM
    anything can be a subject
  • b

    billowy-beach-68498

    04/29/2016, 10:58 PM
    I think I understand selectDependencies part
  • w

    witty-crayon-22786

    04/29/2016, 10:58 PM
    "for any Subject for which we can compute a 'Files' object, we can also compute a StringType"
  • w

    witty-crayon-22786

    04/29/2016, 10:58 PM
    what is the Subject there? well, anything for which we can compute a Files object.
  • w

    witty-crayon-22786

    04/29/2016, 10:59 PM
    (i agree this needs clarification)
  • w

    witty-crayon-22786

    04/29/2016, 10:59 PM
    (just not sure how to explain)
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