Package mondrian.rolap

Class RolapResult.RolapResultEvaluatorRoot

java.lang.Object

mondrian.rolap.RolapResult.RolapResultEvaluatorRoot

Enclosing class:

RolapResult

protected static class RolapResult.RolapResultEvaluatorRoot
extends Object

Extension to RolapEvaluatorRoot which is capable of evaluating sets and named sets.

A given set is only evaluated once each time a query is executed; the result is added to the namedSetEvaluators cache on first execution and re-used.

Named sets are always evaluated in the context of the slicer.

Field Summary

Fields

Modifier and Type	Field	Description
Execution	execution

Constructor Summary

Constructors

Constructor	Description
RolapResultEvaluatorRoot(RolapResult result)

Method Summary

Modifier and Type	Method	Description
void	clearResultCache(boolean clearValidResult)	Clears the expression result cache.
protected Evaluator.NamedSetEvaluator	evaluateNamedSet(NamedSet namedSet, boolean create)	Evaluates a named set.
protected Evaluator.SetEvaluator	evaluateSet(Exp exp, boolean create)	Evaluates a named set represented by an expression.
Object	getCacheResult(Object key)	Gets result from cache.
Object	getParameterValue(ParameterSlot slot)	Returns the value of a parameter, evaluating its default expression if necessary.
Date	getQueryStartTime()	Get query start time.
void	putCacheResult(Object key, Object result, boolean isValidResult)	Puts result in cache.

Methods inherited from class java.lang.Object

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

Field Detail

execution

public final Execution execution

Constructor Detail

RolapResultEvaluatorRoot

public RolapResultEvaluatorRoot(RolapResult result)

Method Detail

evaluateNamedSet

protected Evaluator.NamedSetEvaluator evaluateNamedSet(NamedSet namedSet,
                                                       boolean create)

Evaluates a named set.

The default implementation throws UnsupportedOperationException.

Parameters:

namedSet - Named set

create - Whether to create named set evaluator if not found

evaluateSet

protected Evaluator.SetEvaluator evaluateSet(Exp exp,
                                             boolean create)

Evaluates a named set represented by an expression.

The default implementation throws UnsupportedOperationException.

Parameters:

exp - Expression

create - Whether to create named set evaluator if not found

getParameterValue

public Object getParameterValue(ParameterSlot slot)

Returns the value of a parameter, evaluating its default expression if necessary.

The default implementation throws UnsupportedOperationException.

putCacheResult

public final void putCacheResult(Object key,
                                 Object result,
                                 boolean isValidResult)

Puts result in cache.

Parameters:

key - key

result - value to be cached

isValidResult - indicate if this result is valid

getCacheResult

public final Object getCacheResult(Object key)

Gets result from cache.

Parameters:

key - cache key

Returns:

cached expression

clearResultCache

public final void clearResultCache(boolean clearValidResult)

Clears the expression result cache.

Parameters:

clearValidResult - whether to clear valid expression results

getQueryStartTime

public Date getQueryStartTime()

Get query start time.

Returns:

the query start time