mondrian.calc.impl
Class BetterExpCompiler

java.lang.Object
  mondrian.calc.impl.AbstractExpCompiler
      mondrian.calc.impl.BetterExpCompiler

All Implemented Interfaces:

ExpCompiler

public class BetterExpCompiler
extends AbstractExpCompiler

Enhanced expression compiler. It can generate code to convert between scalar types.

Since:

Sep 29, 2005

Author:

jhyde

Nested Class Summary

Nested classes/interfaces inherited from interface mondrian.calc.ExpCompiler

ExpCompiler.Factory

Constructor Summary

BetterExpCompiler(Evaluator evaluator, Validator validator)

BetterExpCompiler(Evaluator evaluator, Validator validator, List<ResultStyle> resultStyles)

Method Summary

DoubleCalc	compileDouble(Exp exp) Compiles an expression which yields a double result.
ListCalc	compileList(Exp exp, boolean mutable) Compiles an expression which yields List result.
TupleCalc	compileTuple(Exp exp) Compiles an expression which yields a tuple result.

Methods inherited from class mondrian.calc.impl.AbstractExpCompiler

compile, compileAs, compileBoolean, compileDateTime, compileDimension, compileHierarchy, compileInteger, compileIter, compileLevel, compileList, compileMember, compileScalar, compileString, getAcceptableResultStyles, getEvaluator, getValidator, registerParameter

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BetterExpCompiler

public BetterExpCompiler(Evaluator evaluator,
                         Validator validator)

BetterExpCompiler

public BetterExpCompiler(Evaluator evaluator,
                         Validator validator,
                         List<ResultStyle> resultStyles)

Method Detail

compileDouble

public DoubleCalc compileDouble(Exp exp)

Description copied from interface: ExpCompiler

Compiles an expression which yields a double result.

Specified by:

compileDouble in interface ExpCompiler

Overrides:

compileDouble in class AbstractExpCompiler

Parameters:

exp - Expression

Returns:

Calculator which yields a double

compileTuple

public TupleCalc compileTuple(Exp exp)

Description copied from interface: ExpCompiler

Compiles an expression which yields a tuple result.

Specified by:

compileTuple in interface ExpCompiler

Overrides:

compileTuple in class AbstractExpCompiler

Parameters:

exp - Expression

Returns:

Calculator which yields a tuple

compileList

public ListCalc compileList(Exp exp,
                            boolean mutable)

Description copied from interface: ExpCompiler

Compiles an expression which yields List result.

Such an expression is generally a list of Member objects or a list of tuples (each represented by a Member array).

See ExpCompiler.compileList(mondrian.olap.Exp).

Specified by:

compileList in interface ExpCompiler

Overrides:

compileList in class AbstractExpCompiler

Parameters:

exp - Expression

mutable - Whether resulting list is mutable