SOS
- java.lang.Object
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- com.dashoptimization.objects.SOS
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Nested Class Summary
Modifier and Type Class Description static class
SOS.Definition
A special ordered set constraint.
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Method Summary
Modifier and Type Method Description int
compareTo(SOS other)
boolean
equals(java.lang.Object other)
int
getIndex()
Get the index that this object has in the underlying model.int
getIndexForProb(XpressProblem xprob)
Get the index stored in this object but raise an exception if the problem that created this object is notprob
.java.lang.String
getName()
Get the name of this object.XpressProblem
getProblem()
Get the problem to which this element belongs.int
hashCode()
SOS
setName(java.lang.String newName)
Set the name of this SOS.static SOS.Definition
sos(SetType type, Variable[] items, double[] weights, java.lang.String name)
Create a special ordered set constraint.static SOS.Definition
sos1(Variable[] items, double[] weights, java.lang.String name)
Create a special ordered set constraint of type 1.static SOS.Definition
sos2(Variable[] items, double[] weights, java.lang.String name)
Create a special ordered set constraint of type 2.void
updateIndex(int delta)
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Method Detail
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getIndex
public int getIndex()
Get the index that this object has in the underlying model. Attention: this is a very advanced function. Use it only if you know exactly what you are doing.Used in these examples:
- GlobalObjectiveParametrics
- GlobalRHSParametrics
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updateIndex
public void updateIndex(int delta)
- Specified by:
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updateIndex
in interfaceIndex
- Parameters:
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delta
- The value to add to the index. - Since:
- 43.00
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getIndexForProb
public int getIndexForProb(XpressProblem xprob)
Get the index stored in this object but raise an exception if the problem that created this object is notprob
.- Specified by:
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getIndexForProb
in interfaceIndex
- Parameters:
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xprob
- The problem for which the index is queried. If this object does not belong toprob
then an execption is raised. - Returns:
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The low-level index for this object in
prob
. - Since:
- 43.00
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getProblem
public XpressProblem getProblem()
Get the problem to which this element belongs.- Specified by:
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getProblem
in interfaceIndex
- Returns:
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The problem to which this element belongs. This will be
null
if the element was deleted. - Since:
- 43.00
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equals
public final boolean equals(java.lang.Object other)
- Overrides:
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equals
in classjava.lang.Object
- Parameters:
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other
- - Returns:
- Since:
- 43.00
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compareTo
public final int compareTo(SOS other)
- Specified by:
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compareTo
in interfacejava.lang.Comparable<SOS>
- Parameters:
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other
- - Returns:
- Since:
- 43.00
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hashCode
public final int hashCode()
- Overrides:
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hashCode
in classjava.lang.Object
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getName
public java.lang.String getName()
Get the name of this object. Queries the problem instance that owns this object and returns the name from that instance.
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setName
public SOS setName(java.lang.String newName)
Set the name of this SOS. Sets the name of this SOS in the problem instance that owns the object.- Parameters:
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newName
- The name to be set. - Returns:
- This set
- Since:
- 43.00
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sos
public static SOS.Definition sos(SetType type, Variable[] items, double[] weights, java.lang.String name)
Create a special ordered set constraint.- Parameters:
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type
- Type of constraint. -
items
- The elements in the constraint. -
weights
- Weights for the items in the constraint. May benull
. -
name
- Name of constraint. May benull
- Returns:
- A definition for the constraint defined by the arguments.
- Since:
- 43.00
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sos1
public static SOS.Definition sos1(Variable[] items, double[] weights, java.lang.String name)
Create a special ordered set constraint of type 1. Only one of the items in the constraint may be non-zero.- Parameters:
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items
- The elements in the constraint. -
weights
- Weights for the items in the constraint. May benull
. -
name
- Name of constraint. May benull
- Returns:
- A definition for the constraint defined by the arguments.
- Since:
- 43.00
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sos2
public static SOS.Definition sos2(Variable[] items, double[] weights, java.lang.String name)
Create a special ordered set constraint of type 2. At most two elements in the constraint may be non-zero. Additionally, non-zero elements must be adjacent. The ordering of elements is given byweights
. Ifweights
isnull
then the elements are given the same order in which they appear initems
.- Parameters:
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items
- The elements in the constraint. -
weights
- Weights for the items in the constraint. May benull
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name
- Name of constraint. May benull
. - Returns:
- A definition for the constraint defined by the arguments.
- Since:
- 43.00
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