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Contents
module Martyr
module Runtime
module FactFillerStrategies
# Instead of every fact object figuring out itself how to extract fact values from the raw data,
# we calculate a memoized set of strategies in advance.
def fact_levels_filler_hash
return @fact_levels_filler_hash if @fact_levels_filler_hash
hash = {}
supported_level_definitions.each do |level_definition|
level_id = level_definition.id
if has_association_with_level?(level_id)
level_association = association_from_id(level_id)
if level_association.degenerate?
filler = DegenerateLevelAssociationFillerStrategy.new(level_association)
else
filler = QueryLevelAssociationFillerStrategy.new(level_association)
end
else
filler = UnassociatedLevelFillerStrategy.new(level_definition)
end
hash[level_id] = filler
end
@fact_levels_filler_hash = hash
end
class DegenerateLevelAssociationFillerStrategy
def initialize(level_association)
@fact_alias = level_association.fact_alias
end
def value(fact)
fact.raw.fetch(@fact_alias)
end
end
class QueryLevelAssociationFillerStrategy
def initialize(level_association)
@level_association = level_association
end
def value(fact)
fact_key_value = fact.raw.fetch(@level_association.fact_alias)
FutureFactValue.new(fact, @level_association.level_definition, key_supported: true, fact_key_value: fact_key_value)
end
end
class UnassociatedLevelFillerStrategy
def initialize(level_definition)
@level_definition = level_definition
end
def value(fact)
FutureFactValue.new(fact, @level_definition, key_supported: false)
end
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems