Module datarush.matching

Package com.pervasive.datarush.matching.block

Provides operators for generating possible candidate pairs. Generally, these do not need to be used directly, but are instead used by the higher-level operators in com.pervasive.datarush.matching

Class Summary

Class	Description
BlockCartesian	Block the input data by creating a cartesian product of the data.
BlockRecords	Block records into groups of like records based on a set of key fields and generate record pairs from these groups.
BlockSelf	Block records from a single source into groups of like records based on a set of key fields and generate record pairs from these groups.
GroupPairsSortedRows	Finds key groupings within the input key fields and, for each key group, generates all pairwise combinations of distinct rows in that group.
LargeGroupDetector	An operator that issues warnings if a dataflow contains an unusually large number of distinct key values.