mondrian.rolap
Class RolapEvaluator.RolapEvaluatorRoot

java.lang.Object
  mondrian.rolap.RolapEvaluator.RolapEvaluatorRoot

Direct Known Subclasses:

RolapResult.RolapResultEvaluatorRoot

Enclosing class:

RolapEvaluator

protected static class RolapEvaluator.RolapEvaluatorRoot
extends Object

Field Summary

(package private) Map<List<Object>,Calc>	compiledExps
(package private) RolapConnection	connection
(package private) RolapCube	cube
(package private) SqlQuery.Dialect	currentDialect
(package private) Map<Object,Object>	expResultCache
(package private) SchemaReader	schemaReader
(package private) Map<Object,Object>	tmpExpResultCache

Constructor Summary

RolapEvaluator.RolapEvaluatorRoot(Query query)

Method Summary

void	clearResultCache(boolean clearValidResult) Clears the expression result cache.
protected Object	evaluateNamedSet(String name, Exp exp) Evaluates a named set.
Object	getCacheResult(Object key) Gets result from cache.
(package private) Calc	getCompiled(Exp exp, boolean scalar, ResultStyle resultStyle) Implements a cheap-and-cheerful mapping from expressions to compiled expressions.
Object	getParameterValue(ParameterSlot slot) Returns the value of a parameter, evaluating its default expression if necessary.
Date	getQueryStartTime() Get query start time.
protected void	init(Evaluator evaluator) First evaluator calls this method on construction.
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

expResultCache

final Map<Object,Object> expResultCache

tmpExpResultCache

final Map<Object,Object> tmpExpResultCache

cube

final RolapCube cube

connection

final RolapConnection connection

schemaReader

final SchemaReader schemaReader

compiledExps

final Map<List<Object>,Calc> compiledExps

currentDialect

final SqlQuery.Dialect currentDialect

Constructor Detail

RolapEvaluator.RolapEvaluatorRoot

public RolapEvaluator.RolapEvaluatorRoot(Query query)

Method Detail

getCompiled

final Calc getCompiled(Exp exp,
                       boolean scalar,
                       ResultStyle resultStyle)

Implements a cheap-and-cheerful mapping from expressions to compiled expressions.

TODO: Save compiled expressions somewhere better.

Parameters:

exp - Expression

scalar - Whether expression is scalar

resultStyle - Preferred result style; if null, use query's default result style; ignored if expression is scalar

Returns:

compiled expression

evaluateNamedSet

protected Object evaluateNamedSet(String name,
                                  Exp exp)

Evaluates a named set.

The default implementation throws UnsupportedOperationException.

init

protected void init(Evaluator evaluator)

First evaluator calls this method on construction.

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