MPConstraint (com.google.ortools:ortools-java 9.10.4067 API)

java.lang.Object
- com.google.ortools.linearsolver.MPConstraint

```
public class MPConstraint
extends java.lang.Object
```
The class for constraints of a Mathematical Programming (MP) model.

A constraint is represented as a linear equation or inequality.

Field Summary

Fields
Modifier and Type Field and Description

protected boolean swigCMemOwn

Fields
Modifier and Type	Field and Description
`protected boolean`	`swigCMemOwn`

Constructor Summary

Constructors
Modifier Constructor and Description

protected MPConstraint(long cPtr, boolean cMemoryOwn)

Constructors
Modifier	Constructor and Description
`protected`	`MPConstraint(long cPtr, boolean cMemoryOwn)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`MPSolver.BasisStatus`	`basisStatus()` Advanced usage: returns the basis status of the constraint. It is only available for continuous problems). Note that if a constraint "linear_expression in [lb, ub]" is transformed into "linear_expression + slack = 0" with slack in [-ub, -lb], then this status is the same as the status of the slack variable with AT_UPPER_BOUND and AT_LOWER_BOUND swapped.
`void`	`delete()`
`double`	`dualValue()` Advanced usage: returns the dual value of the constraint in the current solution (only available for continuous problems).
`protected void`	`finalize()`
`double`	`getCoefficient(MPVariable var)` Gets the coefficient of a given variable on the constraint (which is 0 if the variable does not appear in the constraint).
`protected static long`	`getCPtr(MPConstraint obj)`
`int`	`index()` Returns the index of the constraint in the MPSolver::constraints_.
`boolean`	`isLazy()` Advanced usage: returns true if the constraint is "lazy" (see below).
`double`	`lb()` Returns the lower bound.
`java.lang.String`	`name()` Returns the name of the constraint.
`void`	`setBounds(double lb, double ub)` Sets both the lower and upper bounds.
`void`	`setCoefficient(MPVariable var, double coeff)` Sets the coefficient of the variable on the constraint. If the variable does not belong to the solver, the function just returns, or crashes in non-opt mode.
`void`	`setIsLazy(boolean laziness)` Advanced usage: sets the constraint "laziness". This is only supported for SCIP and has no effect on other solvers. When laziness is true, the constraint is only considered by the Linear Programming solver if its current solution violates the constraint.
`void`	`setLb(double lb)` Sets the lower bound.
`void`	`setUb(double ub)` Sets the upper bound.
`protected static long`	`swigRelease(MPConstraint obj)`
`double`	`ub()` Returns the upper bound.

Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - swigCMemOwn
```
protected transient boolean swigCMemOwn
```
- Constructor Detail
  - MPConstraint
```
protected MPConstraint(long cPtr,
                       boolean cMemoryOwn)
```
- Method Detail
  - getCPtr
```
protected static long getCPtr(MPConstraint obj)
```
  - swigRelease
```
protected static long swigRelease(MPConstraint obj)
```
  - finalize
```
protected void finalize()
```
    Overrides:
    
    finalize in class java.lang.Object
  - delete
```
public void delete()
```
  - name
```
public java.lang.String name()
```
    Returns the name of the constraint.
  - setCoefficient
```
public void setCoefficient(MPVariable var,
                           double coeff)
```
    Sets the coefficient of the variable on the constraint.
    
    If the variable does not belong to the solver, the function just returns,
    or crashes in non-opt mode.
  - getCoefficient
```
public double getCoefficient(MPVariable var)
```
    Gets the coefficient of a given variable on the constraint (which is 0 if
    the variable does not appear in the constraint).
  - lb
```
public double lb()
```
    Returns the lower bound.
  - ub
```
public double ub()
```
    Returns the upper bound.
  - setLb
```
public void setLb(double lb)
```
    Sets the lower bound.
  - setUb
```
public void setUb(double ub)
```
    Sets the upper bound.
  - setBounds
```
public void setBounds(double lb,
                      double ub)
```
    Sets both the lower and upper bounds.
  - isLazy
```
public boolean isLazy()
```
    Advanced usage: returns true if the constraint is "lazy" (see below).
  - setIsLazy
```
public void setIsLazy(boolean laziness)
```
    Advanced usage: sets the constraint "laziness".
    
    This is only supported for SCIP and has no effect on other
    solvers.
    
    When laziness is true, the constraint is only considered by the Linear
    Programming solver if its current solution violates the constraint. In this
    case, the constraint is definitively added to the problem. This may be
    useful in some MIP problems, and may have a dramatic impact on performance.
    
    For more info see: http://tinyurl.com/lazy-constraints.
  - index
```
public int index()
```
    Returns the index of the constraint in the MPSolver::constraints_.
  - dualValue
```
public double dualValue()
```
    Advanced usage: returns the dual value of the constraint in the current
    solution (only available for continuous problems).
  - basisStatus
```
public MPSolver.BasisStatus basisStatus()
```
    Advanced usage: returns the basis status of the constraint.
    
    It is only available for continuous problems).
    
    Note that if a constraint "linear_expression in [lb, ub]" is transformed
    into "linear_expression + slack = 0" with slack in [-ub, -lb], then this
    status is the same as the status of the slack variable with AT_UPPER_BOUND
    and AT_LOWER_BOUND swapped.
    
    See Also:
    
    MPSolver#BasisStatus.

Class MPConstraint

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

swigCMemOwn

Constructor Detail

MPConstraint

Method Detail

getCPtr

swigRelease

finalize

delete

name

setCoefficient

getCoefficient

lb

ub

setLb

setUb

setBounds

isLazy

setIsLazy

index

dualValue

basisStatus