Package saffron.rel.java

Interface Summary

Terminator

A Terminator is a relational expression which cannot be fetched from, but which is the root node in the tree of Rels implemented by an Implementor.

Class Summary

ExistsConverter	An ExistsConverter converts a relational expression node (Rel) to CallingConvention.EXISTS_ORDINAL calling convention: an expression which yields true if the relation returns at least one row.
ForTerminator	Converts a Rel of CallingConvention.JAVA into a Java for-loop.
JavaAggregate	JavaAggregate implements the Aggregate relational operator by generating code.
JavaDistinct	JavaDistinct implements Distinct inline.
JavaExists	JavaExists implements Distinct inline for the special case that the input relation has zero columns.
JavaFilter	JavaFilter implements Filter in code.
JavaNestedLoopJoin	JavaNestedLoopJoin implements Join using the nested-loop algorithm, with output as code.
JavaOneRow	JavaOneRow implements OneRow inline.
JavaProject	JavaProject implements the Project relational expression as Java code.
JavaTableAccess
JavaUnionAll	JavaUnionAll implements a Union inline, without eliminating duplicates.
SingleTerminator	A SingleTerminator is an abstract base for Terminators with one input.