mondrian.olap.fun
Class CoalesceEmptyFunDef

java.lang.Object
  org.eigenbase.xom.XMLUtil
      org.eigenbase.xom.XOMUtil
          mondrian.olap.Util
              mondrian.olap.fun.FunUtil
                  mondrian.olap.fun.FunDefBase
                      mondrian.olap.fun.CoalesceEmptyFunDef

All Implemented Interfaces:

FunDef

public class CoalesceEmptyFunDef
extends FunDefBase

Definition of the CoalesceEmpty MDX function.

It evaluates each of the arguments to the function, returning the first such argument that does not return a null value.

Version:

$Id: //open/mondrian-release/3.0/src/main/mondrian/olap/fun/CoalesceEmptyFunDef.java#2 $

Author:

gjohnson

Nested Class Summary

Nested classes/interfaces inherited from class mondrian.olap.fun.FunUtil

FunUtil.SetWrapper

Nested classes/interfaces inherited from class mondrian.olap.Util

Util.ErrorCellValue, Util.PropertyList

Field Summary

(package private) static ResolverBase

Resolver

Fields inherited from class mondrian.olap.fun.FunDefBase

flags, parameterCategories, returnCategory, signature

Fields inherited from class mondrian.olap.fun.FunUtil

BooleanNull, DoubleEmpty, DoubleNull, emptyStringArray, IntegerNull, NullMember

Fields inherited from class mondrian.olap.Util

EmptyValue, JdbcVersion, nl, nullValue, PreJdk15, Retrowoven

Constructor Summary

CoalesceEmptyFunDef(ResolverBase resolverBase, int type, int[] types)

Method Summary

Calc	compileCall(ResolvedFunCall call, ExpCompiler compiler) Converts a call to this function into executable objects.

Methods inherited from class mondrian.olap.fun.FunDefBase

castType, createCall, getDescription, getName, getParameterCategories, getResultType, getReturnCategory, getSignature, getSyntax, unparse, validateArg

Methods inherited from class mondrian.olap.fun.FunUtil

addMembers, addMembers, addUnique, ancestor, appendTuple, avg, checkCompatible, checkFlag, checkIterListResultStyles, checkListResultStyles, compareHierarchically, compareSiblingMembers, compareValues, compareValues, compareValues, correlation, count, cousin, covariance, createDummyFunDef, decodeCategory, decodeParameterCategories, decodeReturnCategory, decodeSyntacticType, dimensionMembers, equalTuple, evaluateMembers, evaluateMembers, evaluateSet, evaluateSet, evaluateTuples, getLiteralArg, getLiteralArg, getNonEmptyLevelMembers, getNonEmptyMemberChildren, hierarchize, hierarchyMembers, isAncestorOf, isMemberType, levelMembers, makeNullMember, makeNullTuple, max, memberRange, min, newEvalException, newEvalException, percentile, periodsToDate, quartile, removeCalculatedMembers, resolveFunArgs, searchValuesDesc, sign, sortMembers, sortTuples, sortValuesDesc, stdev, sum, sumDouble, sumDouble, toPercent, tupleContainsNullMember, var

Methods inherited from class mondrian.olap.Util

addDatabaseTime, addLevelCalculatedMembers, assertPostcondition, assertPostcondition, assertPrecondition, assertPrecondition, assertTrue, assertTrue, badValue, camelToUpper, caseSensitiveCompareName, cast, cast, commaList, compareKey, compareName, convertStackToString, createExpr, createRandom, createSimpleValidator, createUdf, dbTimeMillis, deprecated, enumSetAllOf, enumSetNoneOf, enumSetOf, equal, equalName, equals, equals, getAnnotation, getErrorMessage, getErrorMessage, getFirstDescendantOnLevel, getMemberOrdinalInParent, hash, hash, hashArray, implode, isEmpty, isNull, isSorted, isValidProperty, lookup, lookup, lookup, lookup, lookupCompound, lookupCompound, lookupHierarchyLevel, lookupHierarchyRootMember, lookupHierarchyRootMember, lookupProperty, makeBigDecimalFromDouble, makeFqName, makeFqName, makeFqName, maskVersion, mdxEncodeString, needToImplement, newError, newError, newInternal, newInternal, nonDbTimeMillis, normalizeName, parseCommaList, parseConnectString, parseIdentifier, printMemory, printMemory, quoteForMdx, quoteMdxIdentifier, quoteMdxIdentifier, quoteMdxIdentifier, quoteMdxIdentifier, quotePattern, readFully, readURL, readURL, readURL, readURL, replace, replace, replaceProperties, singleQuoteString, singleQuoteString, toMap, toURL, unexpected, union, union, uniquify, unparse, unparse, wildcardToRegexp

Methods inherited from class org.eigenbase.xom.XOMUtil

addAll, addAll, addChild, addChild, addChildren, addElement, concatenate, createDefaultParser, discard, discard, discard, discard, discard, discard, discard, discard, discard, getFirstInstance, toList, toVector, wrapperToXml

Methods inherited from class org.eigenbase.xom.XMLUtil

getFirstTagName, printAtt, printAtt, printAtt, printAtt, printPCDATA, printPCDATA, printPCDATA, quoteAtt, quoteAtt, quoteAtt, quoteAtt, quotePCDATA, stringEncodeXML, stringHasXMLSpecials

Methods inherited from class java.lang.Object

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

Field Detail

Resolver

static final ResolverBase Resolver

Constructor Detail

CoalesceEmptyFunDef

public CoalesceEmptyFunDef(ResolverBase resolverBase,
                           int type,
                           int[] types)

Method Detail

compileCall

public Calc compileCall(ResolvedFunCall call,
                        ExpCompiler compiler)

Description copied from interface: FunDef

Converts a call to this function into executable objects.

The result must implement the appropriate interface for the result type. For example, a function which returns an integer must return an object which implements IntegerCalc.

Specified by:

compileCall in interface FunDef

Overrides:

compileCall in class FunDefBase