A B C D E F G H I J L M N O P R S T U V

G

get(int, int) - Method in class javax.constraints.impl.BasicVarMatrix

get(int, int) - Method in interface javax.constraints.VarMatrix

getAllStrings() - Method in class javax.constraints.impl.BasicVarString

Returns all possible strings from the domain of this variable.

getAllStrings() - Method in interface javax.constraints.VarString

Returns all possible strings from the domain of this variable.

getAPIVersion() - Method in class javax.constraints.impl.AbstractProblem

getAPIVersion() - Method in interface javax.constraints.Problem

Returns JSR331 API version number

getAPIVersion() - Method in class javax.constraints.ProblemDelegator

getAt(String) - Method in class javax.constraints.impl.search.BasicSolution

A synonym for getValue(name).

getAt(String) - Method in interface javax.constraints.Solution

A synonym for getValue(name).

getCardinality() - Method in class javax.constraints.impl.BasicVarSet

getCardinality() - Method in interface javax.constraints.VarSet

getConstraint(String) - Method in class javax.constraints.impl.AbstractProblem

getConstraint(String) - Method in interface javax.constraints.Problem

Returns the Constraint the name "name", or null if no such constraints exists in the problem.

getConstraint(String) - Method in class javax.constraints.ProblemDelegator

getConstraints() - Method in class javax.constraints.impl.AbstractProblem

Returns an array of Objects containing the Constraints previously added to the problem.

getConstraints() - Method in interface javax.constraints.Problem

Returns an array of Constraints previously added to the problem.

getConstraints() - Method in class javax.constraints.ProblemDelegator

getDomainSize() - Method in class javax.constraints.impl.AbstractVar

Provides the default implementation as return getMax() - getMin() + 1; This method is better to be redefined to take into consideration an actual domain implementations.

getDomainSize() - Method in interface javax.constraints.Var

Returns the current number of values inside the domain of this variable.

getDomainType() - Method in class javax.constraints.impl.AbstractProblem

getDomainType() - Method in class javax.constraints.impl.AbstractVar

getDomainType() - Method in interface javax.constraints.Var

Returns the type of this variable's domain.

getFalseConstraint() - Method in class javax.constraints.impl.AbstractProblem

Returns the constant constraint that always will fail when it is posted or executed.

getFalseConstraint() - Method in interface javax.constraints.Problem

Returns the constant constraint that always will fail when it is posted or executed.

getFalseConstraint() - Method in class javax.constraints.ProblemDelegator

getGoal() - Method in class javax.constraints.impl.search.goal.ReversibleActionGoal

getImpl() - Method in interface javax.constraints.ConstrainedVariable

This method should be defined by a concrete solver implementation.

getImpl() - Method in interface javax.constraints.Constraint

This method should be defined by a concrete solver implementation.

getImpl() - Method in class javax.constraints.impl.CommonBase

This method should be defined by a concrete solver implementation.

getImpl() - Method in interface javax.constraints.SearchStrategy

This method should be defined by a concrete solver implementation.

getImplVersion() - Method in class javax.constraints.impl.AbstractProblem

getImplVersion() - Method in interface javax.constraints.Problem

Returns JSR331 Implementation version number

getImplVersion() - Method in class javax.constraints.ProblemDelegator

getIndex(String) - Method in class javax.constraints.impl.BasicVarString

getIndex(String) - Method in interface javax.constraints.VarString

getInitialDomain() - Method in class javax.constraints.impl.AbstractVar

getInitialDomain() - Method in class javax.constraints.impl.BasicVarString

getInitialDomain() - Method in interface javax.constraints.Var

Returns a string representation of the initial domain of this variable.

getInitialDomain() - Method in interface javax.constraints.VarReal

Returns a string representation of the initial domain of this variable.

getInitialDomain() - Method in interface javax.constraints.VarString

getInt() - Method in class javax.constraints.impl.BasicVarString

Returns the underlying integer constrained variable.

getInt() - Method in interface javax.constraints.VarString

Returns the underlying integer constrained variable.

getMax(int) - Method in class javax.constraints.impl.search.BasicSolution

getMax(String) - Method in class javax.constraints.impl.search.BasicSolution

getMax(String) - Method in interface javax.constraints.Solution

Returns the maximum value in the domain of the solution variable with the given name.

getMax(int) - Method in interface javax.constraints.Solution

Returns the maximum value in the domain of the solution variable with index i.

getMax() - Method in interface javax.constraints.Var

Returns the current maximum value in the domain of this variable.

getMax() - Method in interface javax.constraints.VarReal

Returns the current maximum value in the domain of this variable.

getMaxNumberOfSolutions() - Method in class javax.constraints.impl.search.AbstractSolver

Returns the maximal number of solutions any search can look for.

getMaxNumberOfSolutions() - Method in interface javax.constraints.Solver

Returns the maximal number of solutions any search can look for.

getMaxVar() - Method in class javax.constraints.impl.constraint.ConstraintMax

getMin(int) - Method in class javax.constraints.impl.search.BasicSolution

getMin(String) - Method in class javax.constraints.impl.search.BasicSolution

getMin(String) - Method in interface javax.constraints.Solution

Returns the minimum value in the domain of the solution variable with the given name.

getMin(int) - Method in interface javax.constraints.Solution

Returns the minimum value in the domain of the solution variable with the index i.

getMin() - Method in interface javax.constraints.Var

Returns the current minimum value in the domain of this variable.

getMin() - Method in interface javax.constraints.VarReal

Returns the current minimum value in the domain of this variable.

getMinVar() - Method in class javax.constraints.impl.constraint.ConstraintMin

getName() - Method in interface javax.constraints.ConstrainedVariable

Returns the name of this object.

getName() - Method in interface javax.constraints.Constraint

Returns the name of this object.

getName() - Method in class javax.constraints.impl.AbstractProblem

getName() - Method in class javax.constraints.impl.CommonBase

Returns the name of this object.

getName() - Method in interface javax.constraints.Problem

Returns the problem name

getName() - Method in class javax.constraints.ProblemDelegator

getName() - Method in interface javax.constraints.SearchStrategy

Returns the name of this strategy.

getNumberOfSolutions() - Method in class javax.constraints.impl.search.AbstractSolver

Returns the number of the last solution found, or 0 if no solutions have been found yet (or the search for a solution was not yet launched).

getNumberOfSolutions() - Method in interface javax.constraints.Solver

Returns the number of the last solution found, or 0 if no solutions have been found yet (or the search for a solution was not yet launched).

getNumberOfVarReals() - Method in class javax.constraints.impl.search.BasicSolution

Returns the number of decision integer variables in the solution

getNumberOfVarReals() - Method in interface javax.constraints.Solution

Returns the number of decision real variables in the solution

getNumberOfVars() - Method in class javax.constraints.impl.search.BasicSolution

Returns the number of decision integer variables in the solution

getNumberOfVars() - Method in interface javax.constraints.Solution

Returns the number of decision integer variables in the solution

getNumberOfVarSets() - Method in class javax.constraints.impl.search.BasicSolution

Returns the number of decision integer variables in the solution

getNumberOfVarSets() - Method in interface javax.constraints.Solution

Returns the number of decision set variables in the solution

getObject() - Method in interface javax.constraints.ConstrainedVariable

This method may be used to get an attached Business Object for this object.

getObject() - Method in interface javax.constraints.Constraint

This method may be used to get an attached Business Object for this object.

getObject() - Method in class javax.constraints.impl.CommonBase

This method may be used to get an attached Business Object for this object.

getObject() - Method in interface javax.constraints.SearchStrategy

This method may be used to get an attached Business Object for this object.

getOptimizationTolerance() - Method in class javax.constraints.impl.search.AbstractSolver

getOptimizationTolerance() - Method in interface javax.constraints.Solver

Returns the current tolerance for the method findOptimalSolution()

getPossibleSet() - Method in class javax.constraints.impl.BasicVarSet

getPossibleSet() - Method in interface javax.constraints.VarSet

getProblem() - Method in interface javax.constraints.ConstrainedVariable

Return a problem to which this object belongs

getProblem() - Method in interface javax.constraints.Constraint

Return a problem to which this object belongs

getProblem() - Method in class javax.constraints.impl.CommonBase

getProblem() - Method in class javax.constraints.impl.search.AbstractSolver

getProblem() - Method in class javax.constraints.impl.search.BasicSolution

getProblem() - Method in interface javax.constraints.Solution

Returns the problem that this Solution is a solution to.

getProblem() - Method in interface javax.constraints.Solver

Returns the Problem for which this solver was created

getRealPrecision() - Method in class javax.constraints.impl.AbstractProblem

Returns the precision for VarReals

getRealPrecision() - Method in interface javax.constraints.Problem

Returns the precision for VarReals

getRealPrecision() - Method in class javax.constraints.ProblemDelegator

getRealValue(String) - Method in class javax.constraints.impl.search.BasicSolution

getRealValue(int) - Method in class javax.constraints.impl.search.BasicSolution

getRealValue(String) - Method in interface javax.constraints.Solution

Returns the value of the solution real variable with the given name, throws a RuntimeException if the real variable is not bound.

getRealValue(int) - Method in interface javax.constraints.Solution

Returns the value of the solution real variable with the index i, throws a RuntimeException if the real variable is not bound.

getRequiredSet() - Method in class javax.constraints.impl.BasicVarSet

getRequiredSet() - Method in interface javax.constraints.VarSet

getRequiredVar(int) - Method in class javax.constraints.impl.BasicVarSet

getRequiredVars() - Method in class javax.constraints.impl.BasicVarSet

getSearchStrategies() - Method in class javax.constraints.impl.search.AbstractSolver

getSearchStrategy() - Method in class javax.constraints.impl.search.AbstractSolver

getSearchStrategy() - Method in class javax.constraints.impl.search.selectors.AbstractVarSelector

Return a search strategy with which this selector is associated

getSearchStrategy() - Method in interface javax.constraints.Solver

Returns a SearchStrategy that is currently used by the solver

getSearchStrategy() - Method in interface javax.constraints.VarSelector

Return a search strategy with which this selector is associated

getSolution(int) - Method in class javax.constraints.impl.search.AbstractSolver

Returns the i-th Solution

getSolution() - Method in class javax.constraints.impl.search.AbstractSolver

Returns the first (or only) solution

getSolution(int) - Method in interface javax.constraints.Solver

Returns the i-th Solution found by the latest search

getSolutionNumber() - Method in class javax.constraints.impl.search.BasicSolution

getSolutionNumber() - Method in interface javax.constraints.Solution

Returns the number identifying this Solution.

getSolutions() - Method in class javax.constraints.impl.search.AbstractSolver

Returns an array of Solutions, containing all found solutions.

getSolver() - Method in class javax.constraints.impl.AbstractProblem

Returns an instance of a Solver associated with this problem.

getSolver() - Method in class javax.constraints.impl.search.AbstractSearchStrategy

getSolver() - Method in class javax.constraints.impl.search.BasicSolution

getSolver() - Method in class javax.constraints.impl.search.goal.Goal

Returns a solver to which this goal belongs.

getSolver() - Method in interface javax.constraints.Problem

Returns an instance of a Solver associated with this problem.

getSolver() - Method in class javax.constraints.ProblemDelegator

getSolver() - Method in interface javax.constraints.SearchStrategy

Returns a solver to which this strategy belongs.

getSolver() - Method in interface javax.constraints.Solution

Returns the solver that created this Solution.

getSolverStartTime() - Method in class javax.constraints.impl.search.AbstractSolver

getStrategyLogVariables() - Method in class javax.constraints.impl.search.AbstractSolver

getStrategyLogVariables() - Method in interface javax.constraints.Solver

Returns a search strategy that logs all variables

getTimeLimit() - Method in class javax.constraints.impl.search.AbstractSolver

Returns the duration, in milliseconds, of the imposed time limit on searches.

getTimeLimit() - Method in interface javax.constraints.Solver

Returns the duration, in milliseconds, of the imposed time limit on search of one solution.

getTimeLimitGlobal() - Method in class javax.constraints.impl.search.AbstractSolver

Returns the duration, in milliseconds, of the imposed time limit on global search of all solutions or an optimal solution.

getTimeLimitGlobal() - Method in interface javax.constraints.Solver

Returns the duration, in milliseconds, of the imposed time limit on global search of all solutions or an optimal solution.

getTimeLimitStart() - Method in class javax.constraints.impl.search.AbstractSolver

Returns the time, in milliseconds, at which the time limit began counting.

getTimeLimitStart() - Method in interface javax.constraints.Solver

Returns the time, in milliseconds, at which the time limit began counting.

getTrueConstraint() - Method in class javax.constraints.impl.AbstractProblem

Returns the constant constraint that always succeeds when it is posted or executed.

getTrueConstraint() - Method in interface javax.constraints.Problem

Returns the constant constraint that always succeeds when it is posted or executed.

getTrueConstraint() - Method in class javax.constraints.ProblemDelegator

getType() - Method in class javax.constraints.impl.search.AbstractSearchStrategy

getType() - Method in class javax.constraints.impl.search.selectors.ValueSelectorMax

getType() - Method in class javax.constraints.impl.search.selectors.ValueSelectorMin

getType() - Method in class javax.constraints.impl.search.selectors.ValueSelectorMinMaxAlternate

getType() - Method in class javax.constraints.impl.search.selectors.VarSelectorInputOrder

getType() - Method in class javax.constraints.impl.search.selectors.VarSelectorMinDomain

getType() - Method in class javax.constraints.impl.search.selectors.VarSelectorMinDomainMinValue

getType() - Method in class javax.constraints.impl.search.selectors.VarSelectorRandom

getType() - Method in interface javax.constraints.SearchStrategy

Returns a type of this Search Strategy

getType() - Method in interface javax.constraints.ValueSelector

getType() - Method in interface javax.constraints.VarSelector

Returns a type of this selector

getValue() - Method in class javax.constraints.extra.AbstractReversible

getValue() - Method in interface javax.constraints.extra.Reversible

getValue() - Method in class javax.constraints.impl.AbstractVar

getValue() - Method in class javax.constraints.impl.BasicVarSet

getValue() - Method in class javax.constraints.impl.BasicVarString

Returns a String which is the value to which this variable has been instantiated, throws a RuntimeException if the variable is not instantiated.

getValue(String) - Method in class javax.constraints.impl.search.BasicSolution

getValue(int) - Method in class javax.constraints.impl.search.BasicSolution

getValue(String) - Method in interface javax.constraints.Solution

Returns the value of the solution variable with the given name, throws a RuntimeException if the variable is not bound.

getValue(int) - Method in interface javax.constraints.Solution

Returns the value of the solution variable with the index i, throws a RuntimeException if the variable is not bound.

getValue() - Method in interface javax.constraints.Var

Returns the value to which this variable has been instantiated, throws a RuntimeException if the variable is not instantiated.

getValue() - Method in interface javax.constraints.VarReal

Returns the value to which this variable has been instantiated, throws a RuntimeException if the variable is not instantiated.

getValue() - Method in interface javax.constraints.VarSet

getValue() - Method in interface javax.constraints.VarString

Returns a String which is the value to which this variable has been instantiated, throws a RuntimeException if the variable is not instantiated.

getValueSelector() - Method in class javax.constraints.impl.search.AbstractSearchStrategy

getValueSelector() - Method in interface javax.constraints.SearchStrategy

Returns a value selector that was set for this strategy

getValueSet() - Method in class javax.constraints.impl.BasicVarSet

getVar(String) - Method in class javax.constraints.impl.AbstractProblem

Returns the Var variable with the name "name", or null if no such variable exists in the problem.

getVar(String) - Method in interface javax.constraints.Problem

Returns the Var variable with the name "name", or null if no such variable exists in the problem.

getVar(String) - Method in class javax.constraints.ProblemDelegator

getVarArray(String) - Method in class javax.constraints.impl.AbstractProblem

Returns the array of Var variables with the name "name", or null if no such array exists in the problem.

getVarArray(String) - Method in interface javax.constraints.Problem

Returns the array of Var variables with the name "name", or null if no such array exists in the problem.

getVarArray(String) - Method in class javax.constraints.ProblemDelegator

getVarBools() - Method in class javax.constraints.impl.AbstractProblem

Returns an array containing the VarBool variables previously added to the problem.

getVarBools() - Method in interface javax.constraints.Problem

Returns an array containing the VarBool variables previously added to the problem.

getVarBools() - Method in class javax.constraints.ProblemDelegator

getVarMatrix(String) - Method in class javax.constraints.impl.AbstractProblem

getVarMatrix(String) - Method in interface javax.constraints.Problem

getVarMatrix(String) - Method in class javax.constraints.ProblemDelegator

getVarReal(String) - Method in class javax.constraints.impl.AbstractProblem

Returns the VarReal variable with the name "name", or null if no such variable exists in the problem.

getVarReal(String) - Method in interface javax.constraints.Problem

Returns the VarReal variable with the name "name", or null if no such variable exists in the problem.

getVarReal(String) - Method in class javax.constraints.ProblemDelegator

getVarReals() - Method in class javax.constraints.impl.AbstractProblem

Returns an array containing the VarReal variables previously added to the problem.

getVarReals() - Method in class javax.constraints.impl.search.AbstractSearchStrategy

getVarReals() - Method in interface javax.constraints.Problem

Returns an array containing the VarReal variables previously added to the problem.

getVarReals() - Method in class javax.constraints.ProblemDelegator

getVarReals() - Method in interface javax.constraints.SearchStrategy

Returns a an array of real variables that is in use by this strategy

getVarReals() - Method in interface javax.constraints.VarRealSelector

Returns the array of constrained real variables upon which this selector was defined.

getVars() - Method in class javax.constraints.impl.AbstractProblem

Returns an array containing the Var variables previously added to the problem.

getVars() - Method in class javax.constraints.impl.search.AbstractSearchStrategy

getVars() - Method in class javax.constraints.impl.search.selectors.AbstractVarSelector

getVars() - Method in interface javax.constraints.Problem

Returns an array containing the Var variables previously added to the problem.

getVars() - Method in class javax.constraints.ProblemDelegator

getVars() - Method in interface javax.constraints.SearchStrategy

Returns a an array of integer variables that is in use by this strategy

getVars() - Method in interface javax.constraints.VarSelector

Returns the array of constrained variables upon which this selector was defined.

getVarSelector() - Method in class javax.constraints.impl.search.AbstractSearchStrategy

getVarSelector() - Method in interface javax.constraints.SearchStrategy

Returns a variable selector that was set for this strategy

getVarSets() - Method in class javax.constraints.impl.AbstractProblem

Returns an array containing the VarSet variables previously added to the problem.

getVarSets() - Method in interface javax.constraints.Problem

Returns an array containing the VarSet variables previously added to the problem.

getVarSets() - Method in class javax.constraints.ProblemDelegator

getVarString(String) - Method in class javax.constraints.impl.AbstractProblem

getVarString(String) - Method in interface javax.constraints.Problem

getVarString(String) - Method in class javax.constraints.ProblemDelegator

getVarStrings() - Method in class javax.constraints.impl.AbstractProblem

getVarStrings() - Method in interface javax.constraints.Problem

getVarStrings() - Method in class javax.constraints.ProblemDelegator

Goal - Class in javax.constraints.impl.search.goal

This is a base implementation for a goal.

Goal(Solver) - Constructor for class javax.constraints.impl.search.goal.Goal

Goal(Solver, String) - Constructor for class javax.constraints.impl.search.goal.Goal

GoalAddSolution - Class in javax.constraints.impl.search.goal

This goal adds a newly found solution to the array of solutions available via getSolutions()

GoalAddSolution(Solver) - Constructor for class javax.constraints.impl.search.goal.GoalAddSolution

GoalAddSolution(Solver, Var) - Constructor for class javax.constraints.impl.search.goal.GoalAddSolution

GoalAddSolution(Solver, int) - Constructor for class javax.constraints.impl.search.goal.GoalAddSolution

GoalAddSolution(Solver, int, Var) - Constructor for class javax.constraints.impl.search.goal.GoalAddSolution

GoalApplySolution - Class in javax.constraints.impl.search.goal

This goal is trying to resolve the problem using a solution passed as a parameter.

GoalApplySolution(Solution) - Constructor for class javax.constraints.impl.search.goal.GoalApplySolution

GoalAssignValue - Class in javax.constraints.impl.search.goal

GoalAssignValue(Var, ValueSelector) - Constructor for class javax.constraints.impl.search.goal.GoalAssignValue

GoalAssignValue(Var) - Constructor for class javax.constraints.impl.search.goal.GoalAssignValue

GoalAssignValues - Class in javax.constraints.impl.search.goal

GoalAssignValues(Var[], VarSelector, ValueSelector) - Constructor for class javax.constraints.impl.search.goal.GoalAssignValues

Creates a Goal that instantiates (assign values to) all variables inside the array "vars".

GoalAssignValues(Solver) - Constructor for class javax.constraints.impl.search.goal.GoalAssignValues

This is equivalent to GoalAssignValues(solver, solver.getProblem().getVars());

GoalAssignValues(Solver, Var[]) - Constructor for class javax.constraints.impl.search.goal.GoalAssignValues

GoalAssignValues(Var[], VarSelector) - Constructor for class javax.constraints.impl.search.goal.GoalAssignValues

This is equivalent to GoalAssignValues(vars,varSelector,new ValueSelectorMin());

GoalAssignValuesTimeLimit - Class in javax.constraints.impl.search.goal

GoalAssignValuesTimeLimit(Var[], VarSelector, ValueSelector) - Constructor for class javax.constraints.impl.search.goal.GoalAssignValuesTimeLimit

GoalAssignValuesTimeLimit(Solver, Var[]) - Constructor for class javax.constraints.impl.search.goal.GoalAssignValuesTimeLimit

GoalAssignValuesTimeLimit(Solver) - Constructor for class javax.constraints.impl.search.goal.GoalAssignValuesTimeLimit

GoalAssignValueTimeLimit - Class in javax.constraints.impl.search.goal

GoalAssignValueTimeLimit(Var, ValueSelector) - Constructor for class javax.constraints.impl.search.goal.GoalAssignValueTimeLimit

GoalBacktrack - Class in javax.constraints.impl.search.goal

This goal forces the solver to backtrack

GoalBacktrack(Solver) - Constructor for class javax.constraints.impl.search.goal.GoalBacktrack

GoalCheckMaxNumberOfSolutions - Class in javax.constraints.impl.search.goal

This goal is used inside solveAll() to stop or continue the search.

GoalCheckMaxNumberOfSolutions(Solver) - Constructor for class javax.constraints.impl.search.goal.GoalCheckMaxNumberOfSolutions

GoalCheckTimeLimit - Class in javax.constraints.impl.search.goal

This goal checks if time limit exceeded and if yes it forces solver to backtrack.

GoalCheckTotalTimeLimit - Class in javax.constraints.impl.search.goal

This goal checks if total time limit (in seconds) for solveAll() is exceeded and fails if yes.

GoalCheckTotalTimeLimit(Solver) - Constructor for class javax.constraints.impl.search.goal.GoalCheckTotalTimeLimit

GoalConstraint - Class in javax.constraints.impl.search.goal

GoalConstraint(Constraint) - Constructor for class javax.constraints.impl.search.goal.GoalConstraint

GoalLog - Class in javax.constraints.impl.search.goal

GoalLog(Solver, String) - Constructor for class javax.constraints.impl.search.goal.GoalLog

GoalLog(Var) - Constructor for class javax.constraints.impl.search.goal.GoalLog

GoalLog(String, Var) - Constructor for class javax.constraints.impl.search.goal.GoalLog

GoalLog(Var[]) - Constructor for class javax.constraints.impl.search.goal.GoalLog

GoalLog(String, Var[]) - Constructor for class javax.constraints.impl.search.goal.GoalLog

GoalLogSolution - Class in javax.constraints.impl.search.goal

GoalLogSolution(Solution) - Constructor for class javax.constraints.impl.search.goal.GoalLogSolution

GoalLogSolution(Solver) - Constructor for class javax.constraints.impl.search.goal.GoalLogSolution

GoalPrint - Class in javax.constraints.impl.search.goal

GoalPrint(Solver, String) - Constructor for class javax.constraints.impl.search.goal.GoalPrint

GoalSaveSolution - Class in javax.constraints.impl.search.goal

GoalSaveSolution(Solver) - Constructor for class javax.constraints.impl.search.goal.GoalSaveSolution

goalThis(Goal) - Method in class javax.constraints.impl.search.goal.SolverWithGoals

To create a new goal on the javax.constraints level without necessity to go down to the underlying CP solver, one needs to use a goal that will serve as an implementation object.

goalVarEqValue(Var, int) - Method in class javax.constraints.impl.search.goal.SolverWithGoals

goalVarGeValue(Var, int) - Method in class javax.constraints.impl.search.goal.SolverWithGoals

goalVarLeValue(Var, int) - Method in class javax.constraints.impl.search.goal.SolverWithGoals

goalVarNeqValue(Var, int) - Method in class javax.constraints.impl.search.goal.SolverWithGoals