Package org.apache.wayang.basic.mapping

Class Summary

Class	Description
GlobalReduceMapping	This mapping detects combinations of the GroupByOperator and ReduceOperator and merges them into a single ReduceByOperator.
Mappings	Register for the components provided in the basic plugin.
MaterializedGroupByMapping	This mapping translates the GroupByOperator into the MaterializedGroupByOperator.
PageRankMapping	This Mapping translates a PageRankOperator into a Subplan of basic Operators.
PageRankMapping.RankInitializer	Creates intial page ranks.
ReduceByMapping	This mapping detects combinations of the GroupByOperator and ReduceOperator and merges them into a single ReduceByOperator.
RepeatMapping	This Mapping translates a RepeatOperator into a Subplan with the LoopOperator.