Package mondrian.rolap

Class RolapEvaluatorRoot

java.lang.Object

mondrian.rolap.RolapEvaluatorRoot

Direct Known Subclasses:

RolapResult.RolapResultEvaluatorRoot

class RolapEvaluatorRoot
extends Object

Context at the root of a tree of evaluators.

Contains the context that does not change as evaluation context is pushed/popped.

Since:

Nov 11, 2008

Author:

jhyde

Field Summary

Fields

Modifier and Type	Field	Description
(package private) Set<Exp>	activeNativeExpansions
(package private) Map<mondrian.rolap.RolapEvaluatorRoot.CompiledExpKey,Calc>	compiledExps
(package private) RolapConnection	connection
(package private) RolapCube	cube
(package private) Dialect	currentDialect
(package private) RolapMember[]	defaultMembers	Default members of each hierarchy, from the schema reader's perspective.
Execution	execution
(package private) Map<Object,Object>	expResultCache
(package private) int	nonAllPositionCount
(package private) int[]	nonAllPositions
(package private) Query	query
(package private) int	recursionCheckCommandCount	The size of the command stack at which we will next check for recursion.
(package private) SchemaReader	schemaReader
(package private) SolveOrderMode	solveOrderMode
(package private) Statement	statement
(package private) Map<Object,Object>	tmpExpResultCache

Constructor Summary

Constructors

Constructor	Description
RolapEvaluatorRoot(Execution execution)
RolapEvaluatorRoot(Statement statement)	Deprecated.

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.
(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.
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<mondrian.rolap.RolapEvaluatorRoot.CompiledExpKey,Calc> compiledExps

statement

final Statement statement

query

final Query query

currentDialect

final Dialect currentDialect

defaultMembers

final RolapMember[] defaultMembers

Default members of each hierarchy, from the schema reader's perspective. Finding the default member is moderately expensive, but happens very often.

nonAllPositions

final int[] nonAllPositions

nonAllPositionCount

int nonAllPositionCount

solveOrderMode

final SolveOrderMode solveOrderMode

activeNativeExpansions

final Set<Exp> activeNativeExpansions

recursionCheckCommandCount

int recursionCheckCommandCount

The size of the command stack at which we will next check for recursion.

execution

public final Execution execution

Constructor Detail

RolapEvaluatorRoot

public RolapEvaluatorRoot(Statement statement)

Deprecated.

Creates a RolapEvaluatorRoot.

Parameters:

statement - statement

RolapEvaluatorRoot

public RolapEvaluatorRoot(Execution execution)

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 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