Package mondrian.olap.fun

Class ResultStyleCompiler.MultiCalc

java.lang.Object

mondrian.olap.fun.ResultStyleCompiler.MultiCalc

All Implemented Interfaces:

Calc

Enclosing class:

ResultStyleCompiler

static class ResultStyleCompiler.MultiCalc
extends Object
implements Calc

Calc with three child Calcs, one for ITERABLE, LIST and MUTABLE_LIST, which are evaluated during the normal evaluation process.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) Calc	calcIter
(package private) Calc	calcList
(package private) Calc	calcMList
(package private) int	cnt
(package private) static int	counter
(package private) int	lineNumber
(package private) boolean	onlyMutableList

Constructor Summary

Constructors

Constructor	Description
MultiCalc(Calc calcIter, Calc calcList, Calc calcMList, boolean onlyMutableList)

Method Summary

Modifier and Type	Method	Description
void	accept(CalcWriter calcWriter)	Prints this expression, by accepting a visiting CalcWriter.
protected boolean	compare(Object v1, Object v2)
boolean	dependsOn(Hierarchy hierarchy)	Returns whether this expression depends upon a given hierarchy.
Object	evaluate(Evaluator evaluator)	Evaluates this expression.
protected boolean	finalEval()	Returns whether this is a final evaluation; the one that takes place after the while-loop in the RolapResult constructor.
ResultStyle	getResultStyle()	Returns style in which the result of evaluating this expression is returned.
Type	getType()	Returns the type of this expression.
boolean	isWrapperFor(Class<?> iface)
protected void	print(Member[] ma)
<T> T	unwrap(Class<T> iface)

Methods inherited from class java.lang.Object

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

Field Detail

counter

static int counter

calcIter

final Calc calcIter

calcList

final Calc calcList

calcMList

final Calc calcMList

onlyMutableList

final boolean onlyMutableList

lineNumber

int lineNumber

cnt

int cnt

Constructor Detail

MultiCalc

MultiCalc(Calc calcIter,
          Calc calcList,
          Calc calcMList,
          boolean onlyMutableList)

Method Detail

isWrapperFor

public boolean isWrapperFor(Class<?> iface)

Specified by:

isWrapperFor in interface Calc

unwrap

public <T> T unwrap(Class<T> iface)

Specified by:

unwrap in interface Calc

finalEval

protected boolean finalEval()

Returns whether this is a final evaluation; the one that takes place after the while-loop in the RolapResult constructor.

Returns:

true if this is a final evaluation

evaluate

public Object evaluate(Evaluator evaluator)

Description copied from interface: Calc

Evaluates this expression.

Specified by:

evaluate in interface Calc

Parameters:

evaluator - Provides dimensional context in which to evaluate this expression

Returns:

Result of expression evaluation

dependsOn

public boolean dependsOn(Hierarchy hierarchy)

Description copied from interface: Calc

Returns whether this expression depends upon a given hierarchy.

If it does not depend on the hierarchy, then re-evaluating the expression with a different member of this context must produce the same answer.

Some examples:

• The expression

  [Measures].[Unit Sales]

  depends on all dimensions except [Measures].
• The boolean expression

  ([Measures].[Unit Sales], [Time].[1997]) > 1000

  depends on all hierarchies except [Measures] and [Time].
• The list expression

  Filter([Store].[USA].Children, [Measures].[Unit Sales] < 50)

  depends upon all hierarchies except [Store] and [Measures]. How so? Normally the scalar expression would depend upon all hierarchies except [Measures], but the Filter function sets the [Store] context before evaluating the scalar expression, so it is not inherited from the surrounding context.

Specified by:

dependsOn in interface Calc

Parameters:

hierarchy - Hierarchy

Returns:

Whether this expression's result depends upon the current member of the hierarchy

getType

public Type getType()

Description copied from interface: Calc

Returns the type of this expression.

Specified by:

getType in interface Calc

accept

public void accept(CalcWriter calcWriter)

Description copied from interface: Calc

Prints this expression, by accepting a visiting CalcWriter.

Specified by:

accept in interface Calc

Parameters:

calcWriter - Writer

getResultStyle

public ResultStyle getResultStyle()

Description copied from interface: Calc

Returns style in which the result of evaluating this expression is returned.

One application of this method is for the compiler to figure out whether the compiled expression is returning a mutable list. If a mutable list is required, the compiler can create a mutable copy.

Specified by:

getResultStyle in interface Calc

See Also:

ExpCompiler.compileList(mondrian.olap.Exp, boolean)

compare

protected boolean compare(Object v1,
                          Object v2)

print

protected void print(Member[] ma)