oracle.olapi.syntax
Class QDRExpression

java.lang.Object
  oracle.olapi.syntax.SyntaxObject
      oracle.olapi.syntax.DataObject
          oracle.olapi.syntax.Expression
              oracle.olapi.syntax.TypedExpression
                  oracle.olapi.syntax.QDRExpression

All Implemented Interfaces:

FunctionArgument

public final class QDRExpression
extends TypedExpression

A TypedExpression that represents a qualified data reference (QDR). A QDR specifies single members of a set of dimensions and limits an expression to the data specified by those members. Each dimension member is specified by a Qualifier. A QDRExpression is similar to a SQL Model clause.

Constructor Summary

QDRExpression(TypedExpression base, java.util.List<Qualifier> qualifiers)
Creates a QDRExpression with the specified base expression and dimension member qualifiers.

QDRExpression(TypedExpression base, Qualifier[] qualifiers)
Creates a QDRExpression with the specified base expression and dimension member qualifiers.

Method Summary

TypedExpression	getBaseExpression() Gets the base expression of this QDRExpression.
Qualifier[]	getQualifiers() Gets the qualifiers of this QDRExpression.
boolean	isCompositeObject() Indicates whether this QDRExpression contains other SyntaxObject objects.
java.lang.Object	visit(SyntaxObjectVisitor visitor, java.lang.Object context) Calls the visitQDRExpression method of the SyntaxObjectVisitor and passes that method this QDRExpression and an Object.

Methods inherited from class oracle.olapi.syntax.TypedExpression

abs, acos, addMonths, addMonths, ascii, asciiStr, asin, atan, atan2, between, binToNum, bitAnd, cast, ceil, charToROWID, chr, chr, coalesce, compose, concat, concat, convert, convert, cos, cosh, currentDate, currentTime, dbTimeZone, decode, decompose, deref, div, div, div, div, div, dump, eq, eq, eq, eq, eq, exp, extractDay, extractHour, extractMinute, extractMonth, extractSecond, extractTimeZoneAbbr, extractTimeZoneHour, extractTimeZoneMinute, extractTimeZoneRegion, extractYear, floor, fromTZ, ge, ge, ge, ge, ge, getDataType, greatest, gt, gt, gt, gt, gt, hexToRAW, in, initcap, instr, instr2, instr4, instrB, instrC, isInfinite, isNAN, isNotNull, isNull, lastDay, le, le, le, le, le, least, length, length2, length4, lengthB, lengthC, like, like, like2, like4, likeC, ln, localTimestamp, log, lower, lpad, lt, lt, lt, lt, lt, ltrim, minus, minus, minus, minus, minus, minus, mod, monthsBetween, nanvl, ne, ne, ne, ne, ne, newTime, nextDay, nlsCharsetDeclLen, nlsCharsetID, nlsCharsetName, nlsInitcap, nlsLower, nlsSort, nlsUpper, notIn, nullIf, numToDSInterval, numToYMInterval, nvl, nvl2, oraHash, plus, plus, plus, plus, plus, power, rawToHex, rawToNHex, regexpInstr, regexpReplace, regexpSubstr, remainder, replace, round, rowIDToChar, rowIDToNChar, rpad, rtrim, scnToTimestamp, sessionTimeZone, sign, sin, sinh, soundex, sqrt, substr, substr2, substr4, substrB, substrC, sysContext, sysDate, sysExtractUTC, sysGUID, sysTimestamp, sysTypeID, tan, tanh, times, times, times, times, times, timestampToSCN, toBinaryDouble, toBinaryFloat, toChar, toChar, toCLOB, toDate, toDate, toDSInterval, toLOB, toMultiByte, toNChar, toNChar, toNCLOB, toNumber, toNumber, toNumber, toSingleByte, toTimestamp, toTimestampTZ, toYMInterval, translate, translateUsingCharCS, translateUsingNCharCS, treat, trim, trimLeading, trimTrailing, trunc, tzOffset, UID, unistr, upper, USER, userEnv, vsize, widthBucket

Methods inherited from class oracle.olapi.syntax.SyntaxObject

equals, equals, fromSyntax, fromSyntax, fromSyntax, fromSyntax, fromSyntax, isValid, toSyntax, toSyntax, toSyntax, toSyntax, toSyntax, toSyntax

Methods inherited from class java.lang.Object

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

Constructor Detail

QDRExpression

public QDRExpression(TypedExpression base,
                     Qualifier[] qualifiers)

Creates a QDRExpression with the specified base expression and dimension member qualifiers.

Parameters:

base - A TypedExpression that evaluates to the an expression that references the dimensions of the qualifiers.

qualifiers - An array of Qualifier objects, each of which limits a dimension to a single member.

QDRExpression

public QDRExpression(TypedExpression base,
                     java.util.List<Qualifier> qualifiers)

Creates a QDRExpression with the specified base expression and dimension member qualifiers.

Parameters:

base - A TypedExpression that evaluates to the an expression that references the dimensions of the qualifiers.

qualifiers - A List of Qualifier objects, each of which limits a dimension to a single member.

Method Detail

visit

public java.lang.Object visit(SyntaxObjectVisitor visitor,
                              java.lang.Object context)

Calls the visitQDRExpression method of the SyntaxObjectVisitor and passes that method this QDRExpression and an Object.

Specified by:

visit in class SyntaxObject

Parameters:

visitor - A SyntaxObjectVisitor.

context - An Object.

Returns:

The Object returned by the visitQDRExpression method.

getBaseExpression

public TypedExpression getBaseExpression()

Gets the base expression of this QDRExpression.

Returns:

A TypedExpression that evaluates to the base expression of this QDRExpression.

getQualifiers

public Qualifier[] getQualifiers()

Gets the qualifiers of this QDRExpression.

Returns:

An array of Qualifier objects that limit the data of the base expression of this QDRExpression.

isCompositeObject

public boolean isCompositeObject()

Indicates whether this QDRExpression contains other SyntaxObject objects. Because a QDRExpression contains a base TypedExpression and one or more Qualifier objects, this method returns true.

Returns:

A boolean that is true if this QDRExpression contains other SyntaxObject objects or false if it does not.