Package net.sf.saffron.oj.rel

Defines Java code-generating implementations for abstract relational expressions.

See:
Description

Interface Summary

JavaRel	A relational expression of the Java calling convention.
TerminatorRel	A TerminatorRel is a relational expression which cannot be fetched from, but which is the root node in the tree of SaffronRels implemented by an RelImplementor.

Class Summary

BuiltinAggregation	BuiltinAggregation is a basic aggregator for which special code is generated.
BuiltinAggregation.Count	Count is an aggregator which returns the number of rows which have gone into it.
BuiltinAggregation.MinMax	MinMax implements the "min" and "max" aggregator functions, returning the returns the smallest/largest of the values which go into it.
BuiltinAggregation.Sum	Sum is an aggregator which returns the sum of the values which go into it.
ExpressionReaderRel	An ExpressionReaderRel is a relational expression node which evaluates an expression and returns the results as a relation.
ForTerminatorRel	Converts a SaffronRel of CallingConvention.JAVA into a Java for-loop.
IterCalcRel	IterCalcRel is an iterator implementation of a combination of ProjectRel above an optional FilterRel.
IterConcatenateRel	IterConcatenateRel concatenates several iterators.
IterOneRowRel	IterOneRowRel is an iterator implementation of OneRowRel and FilterRel.
JavaAggregateRel	JavaAggregateRel implements the AggregateRel relational operator by generating code.
JavaDistinctRel	JavaDistinctRel implements DistinctRel inline.
JavaExistsRel	JavaExistsRel implements DistinctRel inline for the special case that the input relation has zero columns.
JavaFilterRel	Implements the FilterRel relational expression in Java code.
JavaNestedLoopJoinRel	Implements the JoinRel relational expression using the nested-loop algorithm, with output as Java code.
JavaOneRowRel	JavaOneRowRel implements OneRowRel inline.
JavaProjectRel	Implements the ProjectRel relational expression as Java code.
JavaTableAccessRel	Implements the TableAccessRel relational expression in Java code.
JavaUnionAllRel	JavaUnionAllRel implements a UnionRel inline, without eliminating duplicates.
SingleTerminatorRel	A SingleTerminatorRel is an abstract base for Terminators with one input.

Package net.sf.saffron.oj.rel Description

Defines Java code-generating implementations for abstract relational expressions.

Revision	$Id: //open/saffron/src/net/sf/saffron/oj/rel/package.html#1 $
Copyright	(C) Copyright 2003-2003 Disruptive Technologies, Inc.
Author	Julian Hyde