mondrian.rolap
Class RolapProfilingEvaluator

java.lang.Object
  mondrian.rolap.RolapEvaluator
      mondrian.rolap.RolapProfilingEvaluator

All Implemented Interfaces:

Evaluator

public class RolapProfilingEvaluator
extends RolapEvaluator

Evaluator that collects profiling information as it evaluates expressions.

TODO: Cleanup tasks as part of explain/profiling project:

1. Obsolete AbstractCalc.calcs member, AbstractCalc.getCalcs(), and Calc[] constructor parameter to many Calc subclasses. Store the tree structure (children of a calc, parent of a calc) in RolapEvaluatorRoot.compiledExps.

Rationale: Children calcs are used in about 50 places, but mostly for dependency-checking (e.g. AbstractCalc.anyDepends(mondrian.calc.Calc[], mondrian.olap.Hierarchy)). A few places uses the calcs array but should use more strongly typed members. e.g. FilterFunDef.MutableMemberIterCalc should have data members 'MemberListCalc listCalc' and 'BooleanCalc conditionCalc'.

2. Split Query into parse tree, plan, statement. Fits better into the createStatement - prepare - execute JDBC lifecycle. Currently Query has aspects of all of these, and some other state is held in RolapResult (computed in the constructor, unfortunately) and RolapEvaluatorRoot. This cleanup may not be essential for the explain/profiling task but should happen soon afterwards.

Since:

October, 2010

Author:

jhyde

Nested Class Summary

(package private) static class

RolapProfilingEvaluator.ProfilingEvaluatorCompiler Expression compiler which introduces dependency testing.

Nested classes/interfaces inherited from interface mondrian.olap.Evaluator

Evaluator.NamedSetEvaluator

Field Summary

Fields inherited from class mondrian.rolap.RolapEvaluator

aggregationLists, cellReader, root

Constructor Summary

RolapProfilingEvaluator(RolapEvaluatorRoot root)
Creates a profiling evaluator.

Method Summary

protected RolapEvaluator

_push(List<List<Member>> aggregationList) Creates a clone of the current validator.

Methods inherited from class mondrian.rolap.RolapEvaluator

addCalculation, clearExpResultCache, create, currentIsEmpty, equals, evaluateCurrent, format, format, getActiveNativeExpansions, getAggregationLists, getCachedResult, getConnectionLocale, getContext, getContext, getCube, getDepth, getDialect, getExpanding, getFormatString, getIterationLength, getLogger, getMeasureCube, getMembers, getMissCount, getNamedSetEvaluator, getNonAllMembers, getParameterValue, getParent, getPreviousContext, getProperty, getQuery, getQueryStartTime, getSchemaReader, getSlicerMembers, getTiming, hashCode, isEvalAxes, isNonEmpty, mightReturnNullForUnrelatedDimension, nativeEnabled, needToReturnNullForUnrelatedDimension, newEvalException, push, push, push, push, push, pushAggregation, removeCalculation, restore, savepoint, setCellReader, setContext, setContext, setContext, setContext, setContext, setContext, setEvalAxes, setExpanding, setIterationLength, setNativeEnabled, setNonEmpty, setSlicerContext, shouldIgnoreUnrelatedDimensions

Methods inherited from class java.lang.Object

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

Constructor Detail

RolapProfilingEvaluator

RolapProfilingEvaluator(RolapEvaluatorRoot root)

Creates a profiling evaluator.

Parameters:

root - Shared context between this evaluator and its children

Method Detail

_push

protected RolapEvaluator _push(List<List<Member>> aggregationList)

Description copied from class: RolapEvaluator

Creates a clone of the current validator.

Overrides:

_push in class RolapEvaluator

Parameters:

aggregationList - List of tuples to add to aggregation context, or null