pub(crate) struct QuantifierConstraintValidator;
Expand description

A Validator that checks the following quantifier constraints:

  • Get and Values boxes cannot have input quantifiers.
  • TableFunction boxes can only have subquery input quantifiers.
  • Union, Except and Intersect boxes can only have input quantifiers of type Foreach.
  • A Grouping box must have a single input quantifier of type Foreach ranging over the contents of a Select box.
  • A Grouping box must have a single ranging quantifier of type Foreach that has a Select box as its parent.
  • A Select box must have one or more input quantifiers of arbitrary type (except PreservedForeach).
  • An OuterJoin box must have one or two input quantifiers of type PreservedForeach.
  • An OuterJoin box must have at most one input quantifier of type Foreach.
  • An OuterJoin box must have exactly two input quantifiers of type Foreach or PreservedForeach.

Trait Implementations§

Returns the “default value” for a type. Read more
Perform the validation logic of this Validator instance against the given query graph model. Read more

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