Module mz_transform::attribute

Derived attributes framework and definitions.

Re-exports

• pub use cardinality::Cardinality;

Modules

• cardinality
  Definition and helper structs for the Cardinality attribute.

Structs

• Arity
  Compute the column types of each subtree of a MirRelationExpr from the bottom-up.
• AttributeStore
  A store of attribute derivation algorithms.
• ColumnNames
  Compute the column types of each subtree of a MirRelationExpr from the bottom-up.
• DerivedAttributes
  Derives an attribute and any attribute it depends on.
• DerivedAttributesBuilder
  A builder for DerivedAttributes instances. Builds an DerivedAttributes
• Env
  A map that keeps the computed A values for all LocalId bindings in the current environment.
• NonNegative
  Traverses a MirRelationExpr tree and figures out whether for subtree the sum of all diffs up to a specific time for any record can be a negative value.
• RelationType
  Compute the column types of each subtree of a MirRelationExpr from the bottom-up.
• SubtreeSize
  Compute the number of MirRelationExpr in each subtree in a bottom-up manner.
• UniqueKeys
  Compute the unique keys of each subtree of a MirRelationExpr from the bottom-up.

Traits

• Attribute
  A common interface to be implemented by all derived attributes.
• AttributeContainer
  An API for manipulating the of type A an enclosing store.

Functions

• annotate_plan
  Produce an AnnotatedPlan wrapping the given MirRelationExpr along with Attributes derived from the given context configuration.