Meeseeks

v0.11.0

Meeseeks v0.11.0 Meeseeks.Accumulator behaviour View Source

Accumulator structs package some means of storing nodes selected during the selection process along with a method for checking if the selection should be terminated early and a method for returning the stored nodes.

Users will not typically need to define, or even know about, accumulators, but for users trying to do things like return selected nodes as Document nodes (or even tuple-tree nodes) instead of as Results, a custom accumulator will provide the solution.

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Types

t()

Functions

add(accumulator, document, id)

Provided a document and a node id, returns an updated accumulator

complete?(accumulator)

Checks if an accumulator has reached an arbitrary state of completion and no longer wishes to be added to

return(accumulator)

Returns the values accumulated by the accumulator

Callbacks

add(accumulator, document, id)

Invoked to add a selected node to the accumulator

complete?(accumulator)

Invoked to determine if the accumulator is satisfied

return(accumulator)

Invoked to return the accumulation

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t() View Source 
t() :: struct()

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add(accumulator, document, id) View Source 
add(t(), Meeseeks.Document.t(), Meeseeks.Document.node_id()) :: t()

Provided a document and a node id, returns an updated accumulator.

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complete?(accumulator) View Source 
complete?(t()) :: boolean()

Checks if an accumulator has reached an arbitrary state of completion and no longer wishes to be added to.

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return(accumulator) View Source 
return(t()) :: any()

Returns the values accumulated by the accumulator.

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add(accumulator, document, id) View Source 
add(
  accumulator :: t(),
  document :: Meeseeks.Document.t(),
  id :: Meeseeks.Document.node_id()
) :: t()

Invoked to add a selected node to the accumulator.

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complete?(accumulator) View Source 
complete?(accumulator :: t()) :: boolean()

Invoked to determine if the accumulator is satisfied.

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return(accumulator) View Source 
return(accumulator :: t()) :: any()

Invoked to return the accumulation.