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source: tos.lib.TinyDB.ExprEvalC.nc

Component: ExprEvalC

Expression evaluator that allows for more complicated select and aggregate expressions. For example "select avg(s.temp * 2) from sensors as s where s.temp / 5 > 25 group by s.light >> 2" Author: Kyle Stanek Designed by Kyle Stanek and Sam Madden Created on July 15, 2002 at 3:52 PM

Provided Interfaces

ExprEval

Variables

short evaluateSimpleExpr(short a, short op, short b)

Function Index

command short ExprEval.evaluate (Expr *e, short fieldValue)
command short ExprEval.evaluateGroupBy (AggregateExpression a, short grpByFieldValue)
short evaluateSimpleExpr(short a, short op, short b)