ILOG OPL Development Studio Language Reference Manual

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[0 0 2 4 5][0 0 3 4 5][0 0 2 1 5]From a databaseReading database columns to a tuple array (oilDB2.dat) is more efficient since no datais duplicated.Reading database columns to a tuple array (oilDB2.dat)Gasolines,Gas from DBRead(db,"SELECT name,name,demand,price,octane,lead FROMGasData");Oils,Oil from DBRead(db,"SELECT name,name,capacity,price,octane,lead FROMOilData");You can also write:Gasolines from DBRead(db,"SELECT name FROM GasData");Gas from DBRead(db,"SELECT name,demand,price,octane,lead FROM GasData");Oils from DBRead(db,"SELECT name from OilData");Oil from DBRead(db,"SELECT name,capacity,price,octane,lead FROM OilData");46I L O G O P L D E V E L O P M E N T S T U D I O L A N G U A G ER E F E R E N C E M A N U A L
Initializing tuplesYou initialize tuples either by giving the list of the values of the various fields (see Tuples)or by listing the fields and values. For example:In the .mod file, you write:tuple point{}int x;int y;point p1=...;point p2=...;In the .dat file, you write:p1=##;p2=;As with arrays, the delimiters < and > are replaced by #< and ># and the ordering of the pairsis not important. <strong>OPL</strong> checks whether all fields are initialized exactly once.The type of the fields can be arbitrary and the fields can contain arrays and sets.Example 1: tuple RectangleFor example, the following code lines declare a tuple with three fields: the first is an integerand the other two are arrays of two points.tuple Rectangle {int id;int x[1..2];int y[1..2];}Rectangle r = ...;I L O G O P L D E V E L O P M E N T S T U D I O L A N G U A G ER E F E R E N C E M A N U A L47
Page 2 and 3: CopyrightCOPYRIGHT NOTICECopyright
Page 5 and 6: C O N T E N T STable of contentsLan
Page 7 and 8: Language Reference ManualThis manua
Page 9 and 10: OPL, the modeling languagePresents
Page 11 and 12: ModelsDescribes the overall structu
Page 13 and 14: }ctMaxTotal:Gas + Chloride
Page 15 and 16: Data typesDescribes basic data type
Page 17 and 18: Basic data typesDescribes integers,
Page 19 and 20: FloatsShows how to declare floats i
Page 21 and 22: Data structuresDescribes how the ba
Page 23 and 24: The range float declarationA range
Page 25 and 26: {Edge} Edges = {, , };int a[Edges]
Page 27 and 28: TuplesData structures in OPL can al
Page 29 and 30: In Declaring a tuple using a set of
Page 31 and 32: SetsDefinitionSets are non-indexed
Page 33 and 34: Sorted and ordered setsBy default,
Page 35 and 36: The data shows that the team includ
Page 37 and 38: Data sourcesDescribes data and data
Page 39 and 40: Data initializationDefines internal
Page 41 and 42: {Ship} shipData = ...;and assume th
Page 43 and 44: * .dat file */a = #[“Monday”: 1
Page 45: }}the same can be expressed with th
Page 49 and 50: Initializing setsYou can initialize
Page 51 and 52: As generic setsOPL supports generic
Page 53 and 54: Initialization and memory allocatio
Page 55 and 56: Database initializationDescribes ho
Page 57 and 58: Supported databasesSupported databa
Page 59 and 60: Reading from a databaseIn OPL, data
Page 61 and 62: DBconnection db("oracle9", connecti
Page 63 and 64: Note: OPL supports the same element
Page 65 and 66: Spreadsheet Input/OutputDescribes h
Page 67 and 68: Connection to a spreadsheetThe spre
Page 69 and 70: ♦Sets of tuples: The data has to
Page 71 and 72: Data consistencyDefines the purpose
Page 73 and 74: Data membership consistencyThe keyw
Page 75 and 76: AssertionsOPL provides assertions t
Page 77 and 78: execute{writeln(s2);s1.add(3);write
Page 79 and 80: Decision typesVariables in an OPL a
Page 81 and 82: tuple Route {City orig;City dest;}{
Page 83 and 84: Dynamic collection of elements into
Page 85 and 86: The all syntaxThen, the all syntax
Page 87 and 88: Appending arraysYou can also concat
Page 89 and 90: ExpressionsDescribes data and decis
Page 91 and 92: Data and decision variable identifi
Page 93 and 94: (condition)?thenExpr : elseExprwher
Page 95 and 96: Piecewise-linear functionsPiecewise
Page 97 and 98:
eakpoint[k-1] < ship[o][d] 0; 0}(1,
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Figure The discontinuous piecewise
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x == y;signx == piecewise{0->0; 2->
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Functions over setsFunction Descrip
Page 105 and 106:
ConstraintsSpecifies the constraint
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Using constraintsExplains how to ap
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Conditional constraintsIf-then-else
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Constraint labelsExplains why label
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Labeling constraintsTo label a cons
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subject to {forall( p in Products ,
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Limitations to constraint labelingN
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Compatibility between constraint na
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Types of constraintsDescribes const
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Discrete constraintsDiscrete constr
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Implicit constraintsImplicit constr
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Symbol=>!===MeaningImplyDifferent f
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Constraints available in constraint
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♦Interval grouping constraint: al
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Formal parametersDescribes basic fo
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{forall(i in 1..8)forall(j in 1..8:
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Tuples of parametersOPL allows tupl
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int array[i in set1] = ((sum(j in s
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SchedulingDescribes how to model sc
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IntroductionILOG OPL Development St
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Piecewise linear and stepwise funct
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I L O G O P L D E V E L O P M E N T
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e equal to 1. For a fixed interval
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ExamplesFor examples of using inter
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Precedence constraints between inte
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A logical constraint between interv
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Important:The piecewise linear func
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♦prev(p, a, b) states that if bot
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Cumulative functionsIn scheduling p
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Constraints on cumul function expre
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Syntax and examplesFor the syntax a
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♦That everywhere over a given fix
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in state s. If algn e is true, it m
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NotationsThe main notations used th
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ILOG Script for OPLDescribes the st
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Language structurePresents the stru
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SyntaxWhat composes a scripting sta
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Compound statementsA compound state
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IdentifiersIdentifiers are used to
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Expressions in ILOG ScriptExpressio
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LiteralsLiterals can represent the
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Syntax of different types of expres
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Property accessThere are two ways o
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Function callsSyntactic shorthandSy
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Special operatorsSpecial operator s
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Other operatorsOther operators are
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StatementsA statement can be a cond
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SyntaxEffectfor (var i=0; i < a.len
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Outside a function definitionAt the
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Default valuesDefault value syntaxS
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Built-in values and functionsPresen
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NumbersNumber representations and f
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IntroductionNumbers can be expresse
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Hexadecimal numbersA hexadecimal nu
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Special numbersThere are three spec
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Number methodsThere is only one num
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Numeric constantsThe following nume
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Syntax~ xx > yx >>> yEffectBitwise
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ILOG Script stringsString represent
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Examples of string literals using e
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String propertiesThere is a single,
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Syntaxstring.toUpperCase()EffectExa
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String operatorsString operatorsSyn
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ILOG Script BooleansBoolean represe
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Automatic conversion to BooleanWhen
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Logical operatorsThe following Bool
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ILOG Script arraysArray representat
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Array constructorThe array construc
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Array methodsArray methodsSyntaxarr
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ObjectsObject representation and fu
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Defining methodsSince a method is r
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Object constructorObject constructo
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Built-in methodsThere is only one o
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DatesDate representation and functi
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Date constructorThe date constructo
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Date methodsDate methodsSyntaxdate.
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Date functionsDate functionsSyntaxD
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The null valueThe null value is a s
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ILOG Script functionsIn ILOG Script
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I N D E XIndexABabs, OPL function 9
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limitations in tuples 29ranges 22se
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GHIgeneric sets 51, 137groundbreakp
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NOfor the null value 259for the und
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sparsityand multidimensional arrays
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ILOG OPL Development Studio Language Reference Manual

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