Package org.eigenbase.oj.rex

Defines OpenJava code-generating implementations for abstract row expressions.

See:
Description

Interface Summary

OJAggImplementor	Translates a call to an Aggregation into OpenJava code.
OJRexImplementor	OJRexImplementor translates a call to a particular operator to OpenJava code.
OJRexImplementorTable	OJRexImplementorTable contains, for each operator, an implementor which can convert a call to that operator into OpenJava code.

Class Summary

AggToOJTranslator	Converts aggregate expressions in logical format (AggregateCall) into OpenJava code.
OJRexBinaryExpressionImplementor	OJRexBinaryExpressionImplementor implements OJRexImplementor for row expressions which can be translated to instances of OpenJava BinaryExpression.
OJRexCastImplementor	OJRexCastImplementor implements OJRexImplementor for the CAST operator.
OJRexIgnoredCallImplementor	OJRexIgnoredCallImplementor implements OJRexImplementor by completely ignoring a call and returning its one and only operand.
OJRexImplementorTableImpl	OJRexImplementorTableImpl is a default implementation of OJRexImplementorTable, containing implementors for standard operators, functions, and aggregates.
OJRexImplementorTableImpl.OJBasicAggImplementor
OJRexImplementorTableImpl.OJCountAggImplementor
OJRexImplementorTableImpl.OJMinMaxAggImplementor
OJRexImplementorTableImpl.OJSumAggImplementor	Sum is an aggregator which returns the sum of the values which go into it.
OJRexUnaryExpressionImplementor	OJRexUnaryExpressionImplementor implements OJRexImplementor for row expressions which can be translated to instances of OpenJava UnaryExpression.
RexToOJTranslator	Converts expressions in logical format (RexNode) into OpenJava code.
RexToOJTranslator.WhichInputResult	Result of call to RexToOJTranslator.whichInput(int, org.eigenbase.rel.RelNode), contains the input relational expression, its index, and the index of the field within that relational expression.

Package org.eigenbase.oj.rex Description

Defines OpenJava code-generating implementations for abstract row expressions.

Revision	$Id: //open/dev/farrago/src/org/eigenbase/oj/rex/package.html#5 $
Copyright	Copyright (C) 2004-2009 SQLstream, Inc.	Portions Copyright (C) 2004-2009 John V. Sichi
Author	John V. Sichi/td>