8.9.13. MDOModel

MDOModel

Represent a model in MindOpt application

Methods

MDOModel	Build models associated with the input environment
MDOModel	Read existing information from the file and build a model associated with the input environment
MDOModel	Copy from another existing model to create a new model
addConstr	Add a new linear constraint to this model
addConstr	Add a new linear constraint to this model
addConstr	Add a new linear constraint to this model
addConstr	Add a new linear constraint to this model
addConstr	Add new linear constraints to this model
addConstr	Add a new linear constraint to this model
addConstr	Add a new linear constraint to this model
addConstr	Add new linear constraints to this model
addConstrs	Add an amount of constraints to this model
addConstrs	Add an amount of constraints to this model
addConstrs	Add a certain number of constraints to the specified position of this model
addGenConstrIndicator	Add a new indicator constraint to this model
addPsdConstr	Add a new PSD constraint to this model
addPsdVar	Add a new PSD variable by indicating its dimension and name
addPsdVar	Add a new PSD variables by indicating its objective coefficient and name
addQConstr	Add a new quadratic constraint to model
addQConstr	Add a new quadratic constraint to model
addQConstr	Add a new quadratic constraint to model
addQConstr	Add a new quadratic constraint to model
addQConstr	Add a new quadratic constraint to model
addQConstr	Add a new quadratic constraint to model
addRange	Add a new range constraint to this model
addRangePsdConstr	Add a new range PSD constraint to this model
addRanges	Add an amount of range constraints to this model
addSOS	Add an SOS constraint to the model
addVar	Add a variable to this model by indicate its lower bound, upper bound, objective coefficient, type and name
addVar	Add a variable to this model and associate it to exist constraints
addVar	Add a variable to this model and associate it with existing constraints by indicating the constraint matrix column
addVars	Add count variables of the same type to this model
addVars	Add multiple variables with different attributes
addVars	Add multiple variables with different attributes
addVars	Add multiple variables with different attributes and constraints
chgCoeff	Change the constraint coefficient in constraint matrix
chgCoeffs	Change the constraint coefficients in the constraint matrix
computeIIS	Compute an IIS(Irreducible Inconsistent Subsystem)
dispose	Releases all resources associated with this model
get	Retrieve the value of an int attribute
get	Retrieve the value of the double attribute
get	Retrieve the value of a specific attribute associated with constraints
get	Retrieve the value of a specific int attribute associated with specific variables
get	Retrieve the value of a specific double attribute associated with specific variables
get	Retrieve the value of a specific char attribute associated with specific variables
get	Retrieve the value of a specific String attribute associated with specific variables
get	Retrieve the value of a specific int attribute associated with specific constraints
get	Retrieve the value of a specific double attribute associated with a specific constraint
get	Retrieve the value of a specific char attribute associated with specific constraints
get	Retrieve the value of a specific String attribute associated with specific constraints
get	Retrieve the value of an int attribute associated with a specific variable matrix
get	Retrieve the value of a String attribute
get	Retrieve the value of the double attribute associated with a specific variable matrix
get	Retrieve the value of the char attribute associated with a specific variable matrix
get	Retrieve the value of a String attribute associated with a specific variable matrix
get	Retrieve the value of an int attribute associated with a specific constraint matrix
get	Retrieve the value of the double attribute associated with a specific constraint matrix
get	Retrieve the value of the char attribute associated with a specific constraint matrix
get	Retrieve the value of a String attribute associated with a specific constraint matrix
get	Retrieve the value of an int attribute associated with a three-dimensional array of specific variables
get	Retrieve the value of the double attribute associated with a three-dimensional array of specific variables
get	Retrieve the value of the char attribute associated with a three-dimensional array of specific variables
get	Retrieve the value of a specific attribute associated with a variable
get	Retrieve the value of a String attribute associated with a three-dimensional array of specific variables
get	Retrieve the value of an int attribute associated with a specified constrained three-dimensional array
get	Retrieve the value of the double attribute associated with a specified constrained three-dimensional array
get	Retrieve the value of the char attribute associated with a specific constraint 3D array
get	Retrieve the value of a String attribute associated with a specified constrained three-dimensional array
get	Retrieve the value of an int parameter by name
get	Retrieve the value of the double parameter by its name
get	Retrieve the value of a String parameter by name
get	Retrieve the value of a specific int attribute associated with specific general constraints
get	Retrieve the value of a specific attribute associated with general constraints
get	Retrieve the value of a specific attribute associated with a variable
get	Retrieve the value of a specific int attribute associated with specific general constraints
get	Retrieve the value of a specific attribute associated with general constraints
get	Retrieve the value of a specific int attribute associated with specific general constraints
get	Retrieve the value of a specific attribute associated with general constraints
get	Retrieve the value of a specific int attribute associated with specific general constraints
get	Retrieve the value of a specific attribute associated with general constraints
get	Retrieve the value of a specific double attribute associated with specific quadratic constraints
get	Retrieve the value of a specific string attribute associated with specific quadratic constraints
get	Retrieve the value of a specific double attribute associated with specific quadratic constraints
get	Retrieve the value of a specific string attribute associated with specific quadratic constraints
get	Retrieve the value of a specific attribute associated with a variable
get	Retrieve the value of a specific double attribute associated with specific quadratic constraints
get	Retrieve the value of a specific string attribute associated with specific quadratic constraints
get	Retrieve the value of a specific double attribute associated with specific quadratic constraints
get	Retrieve the value of a specific string attribute associated with specific quadratic constraints
get	Retrieve the value of a specific attribute associated with a variable
get	Retrieve the value of a specific attribute associated with a constraint
get	Retrieve the value of a specific attribute associated with a constraint
get	Retrieve the value of a specific attribute associated with a constraint
getCoeff	Retrieve coefficient values of variables from constraint matrices
getCol	Retrieve the values of a column from a constraint matrix
getConstr	Retrieve the ith constraint in this model
getConstrByName	Retrieve constraint by constraint name
getConstrs	Retrieve all constraints in this model
getEnv	Retrieve the environment associated with this model
getGenConstrIndicator	Retrieve a general constraint by its object
getGenConstrs	Retrieve all general constraints in this model
getObjective	Retrieve the objective function of this model
getPsdConstr	Retrieve the ith PSD constraint in this model
getPsdConstrs	Retrieve all PSD constraints in this model
getPsdVar	Retrieve the ith PSD variable
getPsdVars	Retrieve all PSD variables in this model
getQCRow	Retrieve left-hand-side quadratic expression for a quadratic constraint
getQConstrByName	Retrieve quadratic constraint by constraint name
getQConstrs	Retrieve all quadratic constraints in this model
getRow	Retrieve row from a constraint matrix by constraint
getSOS	Retrieve the variables and coefficients contained in the SOS constraint
getSOSs	Retrieve all SOS constraints in the current model
getVar	Retrieve the ith variable in this model
getVarByName	Retrieve variables by name
getVars	Retrieve all variables in this model
optimize	Start optimizing the model
read	Load data from a file to an existing model
remove	Delete a variable from this model
remove	Remove a constraint from this model
remove	Remove an SOS constraint from this model
remove	Remove a general constraint from this model
remove	Remove an quadratic constraint from this model
reset	Reset the model to the unsolved state, discard any previously calculated solutions, and clear only the solutions
reset	Reset the model to the unsolved state and discard any previously calculated solutions
set	Set the value of the int parameter
set	Set the value of the double parameter
set	Set the value of a specific String attribute associated with a specified variable
set	Set the value of a specific int attribute associated with a specified constraint
set	Set the value of a specific double attribute associated with a specified constraint
set	Set the value of a specific char attribute associated with specified constraints
set	Set the value of a specific String attribute associated with specified constraints
set	Set the value of a specific int attribute associated with specified variable
set	Set the value of a specific double attribute associated with specified variables
set	Set the value of a specific attribute associated with specified variables
set	Set the value of a specific attribute associated with specified variables
set	Set the value of a specific int attribute associated with specified constraints
set	Set the value of a string parameter
set	Set the value of a specific double attribute associated with a specified constraint
set	Set the value of a specific char attribute associated with a specified constraint
set	Set the value of a specific attribute associated with a specified constraint
set	Set the value of the int attribute associated with a specific variable matrix
set	Set the value of the double attribute associated with a specific variable matrix
set	Set the value of the char attribute associated with a specific variable matrix
set	Set the value of the String attribute associated with a specific variable matrix
set	Set the value of the int attribute associated with a specific constraint matrix
set	Set the value of the double attribute associated with a specific constraint matrix
set	Set the value of the char attribute associated with a specific constraint matrix
set	Set the value of the parameter
set	Set the value of the String attribute associated with a specific constraint matrix
set	Set the value of the int attribute associated with a specific constraint matrix
set	Set the value of the double attribute associated with a specific constraint matrix
set	Set the value of the char attribute associated with a specific constraint matrix
set	Set the value of the String attribute associated with a specific constraint matrix
set	Set the value of the int attribute associated with a specific constraint 3D array
set	Set the value of the double attribute associated with a specific constraint 3D array
set	Set the value of the char attribute associated with a specific constraint 3D array
set	Set the value of the String attribute associated with a specific constraint 3D array
set	Set the value of the String attribute associated with a specific general constraint list
set	Set the value of the int attribute
set	Set the value of a specific attribute associated with specified a general constraint list
set	Set the value of the String attribute associated with a specific general constraint matrix
set	Set the value of the String attribute associated with a specific general constraint cube
set	设置和指定二次约束关联的特定double属性的值
set	设置和指定二次约束关联的特定string属性的值
set	设置和指定二次约束关联的特定double属性的值
set	设置和指定二次约束关联的特定string属性的值
set	Set the value of the double attribute
set	设置和指定二次约束关联的特定double属性的值
set	设置和指定二次约束关联的特定string属性的值
set	设置和指定二次约束关联的特定double属性的值
set	设置和指定二次约束关联的特定string属性的值
set	Set the value of a String attribute
set	Set the value of a specific attribute associated with specified variables
set	Set the value of a specific attribute associated with a specified variable
set	Set the value of a specific attribute associated with a specified variable
setCallback	Set up a user defined callback class object
setObjective	Set the objective function
write	Write model data to a file

MDOModel(MDOEnv env)

Build models associated with the input environment

Parameters

MDOEnv env – Associated environment

MDOModel(MDOEnv env, String filename)

Read existing information from the file and build a model associated with the input environment

Parameters

• MDOEnv env – Associated environment

• String filename – The file name from which you want to read the model. The file format and compression type should be displayed after the filename. Valid file formats include. lp, .mps, and. qps, .dat-s. Supported compression types include. gz and. bz2.

MDOModel(MDOModel model)

Copy from another existing model to create a new model

Parameters

MDOModel model – Existing models to be copied

MDOConstr addConstr(MDOLinExpr lhsExpr, char sense, MDOLinExpr rhsExpr, String name)

Add a new linear constraint to this model

Parameters

• MDOLinExpr lhsExpr – The left-hand-side linear expression of the new constraints. If it is NULL, 0 is used.

• char sense –

  The inequality sign. If it is NULL, ‘MDO.LESS_EQUAL’ will be used’. Supported symbols include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• MDOLinExpr rhsExpr – The right-hand-side linear expression

• String name – The name of the new constraint. An empty string is allowed. In this case, the system-generated name is given.

Returns

Newly added constraint

MDOConstr addConstr(MDOLinExpr lhsExpr, char sense, MDOVar rhsVar, String name)

Add a new linear constraint to this model

Parameters

• MDOLinExpr lhsExpr – The left-hand-side linear expression

• char sense –

  The inequality sign. If it is NULL, ‘MDO.LESS_EQUAL’ will be used’. Supported symbols include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• MDOVar rhsVar – The right-hand-side variable

• String name – The name of the new constraint. An empty string is allowed. In this case, the system-generated name is given.

Returns

Newly added constraints

MDOConstr addConstr(MDOVar lhsVar, char sense, MDOLinExpr rhsExpr, String name)

Add a new linear constraint to this model

Parameters

• MDOVar lhsVar – The left-hand-side variable

• char sense –

  The inequality sign. If it is NULL, ‘MDO.LESS_EQUAL’ will be used’. Supported symbols include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• MDOLinExpr rhsExpr – The right-hand-side linear expression

• String name – The name of the new constraint. An empty string is allowed. In this case, the system-generated name is given.

Returns

Newly added constraints

MDOConstr addConstr(MDOVar v, char sense, MDOVar rhsVar, String name)

Add a new linear constraint to this model

Parameters

• MDOVar v – The left-hand-side variable

• char sense –

  The inequality sign. If it is NULL, ‘MDO.LESS_EQUAL’ will be used’. Supported symbols include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• MDOVar rhsVar – The right-hand-side variable

• String name – The name of the new constraint. An empty string is allowed. In this case, the system-generated name is given.

Returns

Newly added constraints

MDOConstr addConstr(MDOVar lhsVar, char sense, double rhs, String name)

Add new linear constraints to this model

Parameters

• MDOVar lhsVar – Left-hand-side variable

• char sense –

  The inequality sign. Supported flags include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• double rhs – The right-hand-side value.

• String name – The name of the new constraint. An empty string is allowed. In this case, the system-generated name is given.

Returns

The newly added constraints

MDOConstr addConstr(double lhs, char sense, MDOVar rhsVar, String name)

Add a new linear constraint to this model

Parameters

• double lhs – The left-hand-side value

• char sense –

  The inequality sign. Supported flags include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• MDOVar rhsVar – The right-hand-side variable

• String name – The name of the new constraint. An empty string is allowed. In this case, the system-generated name is given.

Returns

The Newly added constraints

MDOConstr addConstr(MDOLinExpr lhsExpr, char sense, double rhs, String name)

Add a new linear constraint to this model.

Parameters

• MDOLinExpr lhsExpr – The left-hand-side linear expression

• char sense –

  An inequality flag. Supported flags include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• double rhs – The right-hand-side value.

• String name – The name of the new constraint. An empty string is allowed. In this case, the system-generated name is given.

Returns

The newly added constraints

MDOConstr addConstr(double lhs, char sense, MDOLinExpr rhsExpr, String name)

Add new linear constraints to this model

Parameters

• double lhs – The left-hand-side value

• char sense –

  An inequality flag. Supported flags include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• MDOLinExpr rhsExpr – The right-hand-side linear expression

• String name – The name of the new constraint. An empty string is allowed. In this case, the system-generated name is given.

Returns

The newly added constraints

MDOConstr[] addConstrs(int count)

Add an amount of constraints to this model

Parameters

int count – The number of constraints to be added

Returns

The newly added constraint array

MDOConstr[] addConstrs(MDOLinExpr[] lhsExprs, char[] senses, double[] rhss, String[] names)

Add an amount of constraints to this model

Parameters

• MDOLinExpr[] lhsExprs – The left-hand-side linear expressions of the new constraints. If it is NULL, 0 is used.

• char[] senses –

  The inequality sign of the new constraint. If it is NULL, ‘MDO.LESS_EQUAL’ will be used’. Supported symbols include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• double[] rhss – The right-hand-side values of the new constraint. If NULL exists, ‘MDO.INFINITY’ will be used.

• String[] names – The name of the new constraints. If it is NULL, the system automatically generates the name.

Returns

The newly added constraints

MDOConstr[] addConstrs(MDOLinExpr[] lhsExprs, char[] senses, double[] rhss, String[] names, int start, int len)

Add a certain number of constraints to the specified position of this model

Parameters

• MDOLinExpr[] lhsExprs – The linear expression of the new constraint. If it is NULL, 0 is used.

• char[] senses –

  The inequality symbol of the new constraint. If it is NULL, ‘MDO.LESS_EQUAL’is used’. Supported symbols include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• double[] rhss – The value to the right of the new constraint. If NULL exists, ‘MDO.INFINITY’is used’.

• String[] names – The name of the new constraint. If it is NULL, the system automatically generates the name.

• int start – The specified start index to be added.

• int len – The specified number of indices to be added.

Returns

The newly added constraints

MDOGenConstr addGenConstrIndicator(MDOVar binvar, int binval, MDOLinExpr expr, char sense, double rhs, String name)

Add a new indicator constraint to this model.

Parameters

• MDOVar binvar – The binary variable of this indicator constraint.

• int binval – The binary value when indicator constraint take effect.

• MDOLinExpr expr – The linear expression of new indicator constraint.

• char sense – The constraint sense of new indicator constraint.

• double rhs – The right-hand-side value of new indicator constraint.

• String name – The name of new indicator constraint.

Returns

The newly added general constraint.

MDOPsdConstr addPsdConstr(MDOPsdExpr expr, char sense, double rhs, String name)

Add a new PSD constraint to this model

Parameters

• MDOPsdExpr expr – The left-hand-side expression of new PSD constraint.

• char sense –

  The inequality symbol. Supported symbols include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• double rhs – The right-hand-side value of the new PSD variable

• String name – The name of the new PSD constraint. If the string is empty, the system-generated name will be used.

Returns

Newly added constraints

MDOPsdVar addPsdVar(int dim, String name)

Add a new PSD variable by indicating its dimension and name

Parameters

• int dim – The dimension of the new PSD variable, that is, the number of matrix rows (or matrix columns , the matrix is square) associated with the new PSD variable.

• String name – The name of the new PSD variable. If the string is empty, the system-generated name will be used.

Returns

The newly added PSD variable

MDOPsdVar addPsdVar(MDOMatrix obj, String name)

Add a new PSD variables by indicating its objective coefficient and name

Parameters

• MDOMatrix obj – The objective coefficient of the new PSD variable, it should be a square matrix.

• String name – The name of new PSD variable, can be empty string in which case a system generated name will be given.

Returns

Newly added PSD variable

MDOQConstr addQConstr(MDOQuadExpr lhsExpr, char sense, MDOVar rhsVar, String name)

Add a new quadratic constraint to model.

Parameters

• MDOQuadExpr lhsExpr – The left-hand-side quadratic expression.

• char sense –

  The inequality sign. If it is NULL, ‘MDO.LESS_EQUAL’ will be used. Supported symbols include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• MDOVar rhsVar – The right-hand-side variable

• String name – The name of the new quadratic constraint. An empty string is allowed. In this case, the system-generated name is given.

Returns

Newly added quadratic constraint.

MDOQConstr addQConstr(MDOQuadExpr lhsExpr, char sense, MDOLinExpr rhsExpr, String name)

Add a new quadratic constraint to model.

Parameters

• MDOQuadExpr lhsExpr – The left-hand-side quadratic expression.

• char sense –

  The inequality sign. If it is NULL, ‘MDO.LESS_EQUAL’ will be used. Supported symbols include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• MDOLinExpr rhsExpr – The right-hand-side linear expression

• String name – The name of the new quadratic constraint. An empty string is allowed. In this case, the system-generated name is given.

Returns

Newly added quadratic constraint.

MDOQConstr addQConstr(MDOQuadExpr lhsExpr, char sense, double rhs, String name)

Add a new quadratic constraint to model.

Parameters

• MDOQuadExpr lhsExpr – The left-hand-side quadratic expression.

• char sense –

  The inequality sign. If it is NULL, ‘MDO.LESS_EQUAL’ will be used. Supported symbols include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• double rhs – The right-hand-side constant

• String name – The name of the new quadratic constraint. An empty string is allowed. In this case, the system-generated name is given.

Returns

Newly added quadratic constraint.

MDOQConstr addQConstr(MDOLinExpr lhsExpr, char sense, MDOQuadExpr rhsExpr, String name)

Add a new quadratic constraint to model.

Parameters

• MDOLinExpr lhsExpr – The left-hand-side linear expression.

• char sense –

  The inequality sign. If it is NULL, ‘MDO.LESS_EQUAL’ will be used. Supported symbols include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• MDOQuadExpr rhsExpr – The right-hand-side quadratic expression

• String name – The name of the new quadratic constraint. An empty string is allowed. In this case, the system-generated name is given.

Returns

Newly added quadratic constraint.

MDOQConstr addQConstr(MDOVar var, char sense, MDOQuadExpr rhsExpr, String name)

Add a new quadratic constraint to model.

Parameters

• MDOVar var – The left-hand-side variable.

• char sense –

  The inequality sign. If it is NULL, ‘MDO.LESS_EQUAL’ will be used. Supported symbols include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• MDOQuadExpr rhsExpr – The right-hand-side quadratic expression

• String name – The name of the new quadratic constraint. An empty string is allowed. In this case, the system-generated name is given.

Returns

Newly added quadratic constraint.

MDOQConstr addQConstr(double lhs, char sense, MDOQuadExpr rhsExpr, String name)

Add a new quadratic constraint to model.

Parameters

• double lhs – The left-hand-side constant.

• char sense –

  The inequality sign. If it is NULL, ‘MDO.LESS_EQUAL’ will be used. Supported symbols include:

  • MDO.EQUAL

  • MDO.LESS_EQUAL

  • MDO.GREATER_EQUAL

• MDOQuadExpr rhsExpr – The right-hand-side quadratic expression

• String name – The name of the new quadratic constraint. An empty string is allowed. In this case, the system-generated name is given.

Returns

Newly added quadratic constraint.

MDOConstr addRange(MDOLinExpr expr, double lower, double upper, String name)

Add a new range constraint to this model

Parameters

• MDOLinExpr expr – Linear expression

• double lower – Lower bound of linear expression

• double upper – Upper bound of linear expression

• String name – The name of the new constraint. If the string is empty, the system-generated name will be used.

Returns

Newly added constraints

MDOPsdConstr addRangePsdConstr(MDOPsdExpr expr, double lower, double upper, String name)

Add a new range PSD constraint to this model

Parameters

• MDOPsdExpr expr – The expression of new PSD constraint

• double lower – The lower bound of the PSD expression

• double upper – The upper bound of the PSD expression

• String name – The name of the new PSD constraint. If the string is empty, the system-generated name will be used.

Returns

The newly added constraints

MDOConstr[] addRanges(MDOLinExpr[] exprs, double[] lower, double[] upper, String[] names)

Add an amount of range constraints to this model

Parameters

• MDOLinExpr[] exprs – An array of linear expressions for the new constraints. If it is NULL, 0 is used as the left value.

• double[] lower – The lower bound array of the linear expressions. If it is NULL, 0 is used as the lower limit.

• double[] upper – The upper bound array of linear expressions. If it is NULL, ‘MDO.INFINITY’is used’.

• String[] names – The name array of the new constraints. If it is NULL, the system-generated name is used.

Returns

The newly added constraint array

MDOSOS addSOS(MDOVar[] vars, double[] weights, int type)

Add an SOS constraint to the model

Parameters

• MDOVar[] vars – Variables included in the new SOS constraint

• double[] weights – Weights of variables in new SOS constraints

• int type –

  The type of the new SOS constraint. Supported types include:

  • MDO_SOS_TYPE1(1)

  A maximum of one variable in a set is not equal to 0.

  • MDO_SOS_TYPE2(2)

  A maximum of two consecutive variables in a set are not equal to 0.

Returns

Newly added SOS constraint

MDOVar addVar(double lb, double ub, double obj, char type, String name)

Add a variable to this model by indicate its lower bound, upper bound, objective coefficient, type and name.

Parameters

• double lb – The lower bound of new variable.

• double ub – The upper bound of new variable.

• double obj – The objective coefficient of new variable.

• char type –

  The type of the new variable. Supported types include:

  • MDO.CONTINUOUS(‘C’) continuous variable,

  • MDO.BINARY(‘B’) binary variable,

  • MDO.INTEGER (‘$) integer variable,

  • MDO.SEMICONT (‘S’) semi-continuous variable,

  • MDO.SEMIINT (‘$) semi-integer variable.

• String name – The name of the new variable. If it is an empty string, the system-generated name is used.

Returns

The newly added variable

MDOVar addVar(double lb, double ub, double obj, char type, MDOConstr[] constrs, double[] coeffs, String name)

Add a variable to this model and associate it to exist constraints.

Parameters

• double lb – The lower bound of new variable.

• double ub – The upper bound of new variable.

• double obj – The objective coefficient of new variable.

• char type –

  The type of the new variable. Supported types include:

  • MDO.CONTINUOUS(‘C’) continuous variable,

  • MDO.BINARY(‘B’) binary variable,

  • MDO.INTEGER (‘$) integer variable,

  • MDO.SEMICONT (‘S’) semi-continuous variable,

  • MDO.SEMIINT (‘$) semi-integer variable.

• MDOConstr[] constrs – The constraints to be associated

• double[] coeffs – The constraint coefficient of each associated constraint. If NULL, all coefficients are set to zero.

• String name – The name of the new variable. If it is an empty string, the system-generated name is used.

Returns

The newly added variable

MDOVar addVar(double lb, double ub, double obj, char type, MDOColumn col, String name)

Add a variable to this model and associate it with existing constraints by indicating the constraint matrix column

Parameters

• double lb – The lower bound of new variable

• double ub – The upper bound of new variables

• double obj – The objective coefficient of new variable.

• char type –

  The type of the new variable. Supported types include:

  • MDO.CONTINUOUS(‘C’) continuous variable,

  • MDO.BINARY(‘B’) binary variable,

  • MDO.INTEGER (‘$) integer variable,

  • MDO.SEMICONT (‘S’) semi-continuous variable,

  • MDO.SEMIINT (‘$) semi-integer variable.

• MDOColumn col – The constraint matrix column associated with new variables

• String name – The name of the new variable. If it is an empty string, the system-generated name is used.

Returns

The newly added variable

MDOVar[] addVars(int count, char type)

Add count variables of the same type to this model

Parameters

• int count – Number of variables to be added.

• char type –

  The type of the new variables. Supported types include:

  • MDO.CONTINUOUS(‘C’) continuous variable,

  • MDO.BINARY(‘B’) binary variable,

  • MDO.INTEGER (‘$) integer variable,

  • MDO.speecht (‘S’) semi-continuous variable,

  • MDO.SEMIINT (‘$) semi-integer variable.

Returns

The newly added array of variables

MDOVar[] addVars(double[] lb, double[] ub, double[] obj, char[] type, String[] names)

Add multiple variables with different attributes

Parameters

• double[] lb – The lower bounds of the new variables. If it is NULL, set the lower limit to 0.

• double[] ub – The upper bounds of the new variable. If it is NULL, set the upper limit to ‘MDO.INFINITY’.

• double[] obj – The objective coefficients of new variables, 0 will be used if NULL presents.

• char[] type –

  The type of the new variable. Supported types include:

  • MDO.CONTINUOUS(‘C’) continuous variable,

  • MDO.BINARY(‘B’) binary variable,

  • MDO.INTEGER (‘$) integer variable,

  • MDO.SEMICONT (‘S’) semi-continuous variable,

  • MDO.SEMIINT (‘$) semi-integer variable.

• String[] names – The name of the new variable. If it is NULL, the system-generated name is used.

Returns

The newly added array of variables

MDOVar[] addVars(double[] lb, double[] ub, double[] obj, char[] type, String[] names, int start, int len)

Add multiple variables with different attributes

Parameters

• double[] lb – The lower bounds of the new variable. If it is NULL, the lower limit is set to 0.

• double[] ub – The upper bounds of the new variable. If it is NULL, the upper limit is set to ‘MDO.INFINITY’.

• double[] obj – The objective coefficients of new variables, 0 will be used if NULL presents.

• char[] type –

  The type of the new variable. Supported types include:

  • MDO.CONTINUOUS(‘C’) continuous variable,

  • MDO.BINARY(‘B’) binary variable,

  • MDO.INTEGER (‘$) integer variable,

  • MDO.SEMICONT (‘S’) semi-continuous variable,

  • MDO.SEMIINT (‘$) semi-integer variable.

• String[] names – The name of the new variable. If it is NULL, the system-generated name is used.

• int start – Specifies the start index of the input to be added.

• int len – The number of variables to add

Returns

The newly added array of variables

MDOVar[] addVars(double[] lb, double[] ub, double[] obj, char[] type, String[] names, MDOColumn[] col)

Add multiple variables with different attributes and constraints

Parameters

• double[] lb – The lower bounds of the new variable. If it is NULL, the lower limit is set to 0.

• double[] ub – The upper bounds of the new variable. If it is NULL, the upper limit is set to ‘MDO.INFINITY’.

• double[] obj – The objective coefficients of new variables. If it is NULL, the target coefficients of the new variable are all set to 0.

• char[] type –

  The type of the new variable. Supported types include:

  • MDO.CONTINUOUS(‘C’) continuous variable,

  • MDO.BINARY(‘B’) binary variable,

  • MDO.INTEGER (‘$) integer variable,

  • MDO.SEMICONT (‘S’) semi-continuous variable,

  • MDO.SEMIINT (‘$) semi-integer variable.

• String[] names – The name of the new variable. If it is NULL, the system-generated name is used.

• MDOColumn[] col – The constraint matrix column to associate with the new variable

Returns

The newly added array of variables

void chgCoeff(MDOConstr constr, MDOVar var, double value)

Change the constraint coefficient in constraint matrix

Parameters

• MDOConstr constr – The constraint to indicate the coefficient

• MDOVar var – The variable to indicate the coefficient

• double value – The new coefficient value

void chgCoeffs(MDOConstr[] constrs, MDOVar[] vars, double[] values)

Change the constraint coefficients in the constraint matrix

Parameters

• MDOConstr[] constrs – Constraints of coefficients

• MDOVar[] vars – Variable of coefficient

• double[] values – New coefficient value

void computeIIS()

Compute an IIS(Irreducible Inconsistent Subsystem). IIS is a subset of variable bounds and constraint bounds, this subset satisfies:

1. The subproblem corresponding to the subset is still infeasible.

2. After delete any bound in this subset, the subproblem becomes feasible.

Check IIS related attributes for variable and constraint for more details.

Note

The cardinality of the subsystem is supposed to be small. Note that the problem is supposed to be infeasible.

void dispose()

Releases all resources associated with this model. Note that this model cannot be used after this method is called.

int get(MDO.IntAttr attr)

Retrieve the value of an int attribute.

Parameters

MDO.IntAttr attr – Attribute

Returns

The current value of the attribute to be retrieved

double get(MDO.DoubleAttr attr)

Retrieve the value of the double attribute

Parameters

MDO.DoubleAttr attr – Attribute

Returns

The current value of the attribute to be retrieved

String[] get(MDO.StringAttr attr, MDOConstr[] constrs)

Retrieve the value of a specific attribute associated with constraints

Parameters

• MDO.StringAttr attr – Attribute

• MDOConstr[] constrs – Associated constraint

Returns

The attribute value to be retrieved.

int[] get(MDO.IntAttr attr, MDOVar[] vars, int start, int len)

Retrieve the value of a specific int attribute associated with specific variables

Parameters

• MDO.IntAttr attr – Attribute

• MDOVar[] vars – An array of variables, some of which are associated variables.

• int start – The starting index of the array.

• int len – Number of associated variables

Returns

The attribute value to be retrieved.

double[] get(MDO.DoubleAttr attr, MDOVar[] vars, int start, int len)

Retrieve the value of a specific double attribute associated with specific variables

Parameters

• MDO.DoubleAttr attr – Attribute

• MDOVar[] vars – An array of variables, some of which are associated variables.

• int start – The starting index of the array.

• int len – Number of associated variables

Returns

The attribute value to be retrieved.

char[] get(MDO.CharAttr attr, MDOVar[] vars, int start, int len)

Retrieve the value of a specific char attribute associated with specific variables

Parameters

• MDO.CharAttr attr – Attribute

• MDOVar[] vars – An array of variables, some of which are associated variables.

• int start – The starting index of the array.

• int len – Number of associated variables

Returns

The attribute value to be retrieved.

String[] get(MDO.StringAttr attr, MDOVar[] vars, int start, int len)

Retrieve the value of a specific String attribute associated with specific variables

Parameters

• MDO.StringAttr attr – Attribute

• MDOVar[] vars – An array of variables, some of which are associated variables.

• int start – The starting index of the array.

• int len – Number of associated variables

Returns

The attribute value to be retrieved.

int[] get(MDO.IntAttr attr, MDOConstr[] constrs, int start, int len)

Retrieve the value of a specific int attribute associated with specific constraints

Parameters

• MDO.IntAttr attr – Attribute

• MDOConstr[] constrs – Constraint array, some of which are associated constraints

• int start – The starting index of the array.

• int len – Number of associated constraints

Returns

The attribute value to be retrieved.

double[] get(MDO.DoubleAttr attr, MDOConstr[] constrs, int start, int len)

Retrieve the value of a specific double attribute associated with a specific constraint

Parameters

• MDO.DoubleAttr attr – Attribute

• MDOConstr[] constrs – Constraint array, some of which are associated constraints

• int start – The starting index of the array.

• int len – Number of associated constraints

Returns

The attribute value to be retrieved.

char[] get(MDO.CharAttr attr, MDOConstr[] constrs, int start, int len)

Retrieve the value of a specific char attribute associated with specific constraints

Parameters

• MDO.CharAttr attr – Attribute

• MDOConstr[] constrs – Constraint array, some of which are associated constraints

• int start – The starting index of the array.

• int len – Number of associated constraints

Returns

The attribute value to be retrieved.

String[] get(MDO.StringAttr attr, MDOConstr[] constrs, int start, int len)

Retrieve the value of a specific String attribute associated with specific constraints

Parameters

• MDO.StringAttr attr – Attribute

• MDOConstr[] constrs – Constraint array, some of which are associated constraints

• int start – The starting index of the array.

• int len – Number of associated constraints

Returns

The attribute value to be retrieved.

int[][] get(MDO.IntAttr attr, MDOVar[][] vars)

Retrieve the value of an int attribute associated with a specific variable matrix

Parameters

• MDO.IntAttr attr – Attribute

• MDOVar[][] vars – Correlation variable matrix

Returns

The attribute value to be retrieved.

String get(MDO.StringAttr attr)

Retrieve the value of a String attribute.

Parameters

MDO.StringAttr attr – Attribute

Returns

The current value of the attribute to be retrieved

double[][] get(MDO.DoubleAttr attr, MDOVar[][] vars)

Retrieve the value of the double attribute associated with a specific variable matrix

Parameters

• MDO.DoubleAttr attr – Attribute

• MDOVar[][] vars – Variable matrix

Returns

The attribute value to be retrieved.

char[][] get(MDO.CharAttr attr, MDOVar[][] vars)

Retrieve the value of the char attribute associated with a specific variable matrix

Parameters

• MDO.CharAttr attr – Attribute

• MDOVar[][] vars – Variable matrix

Returns

The attribute value to be retrieved.

String[][] get(MDO.StringAttr attr, MDOVar[][] vars)

Retrieve the value of a String attribute associated with a specific variable matrix

Parameters

• MDO.StringAttr attr – Attribute

• MDOVar[][] vars – Variable matrix

Returns

The attribute value to be retrieved.

int[][] get(MDO.IntAttr attr, MDOConstr[][] constrs)

Retrieve the value of an int attribute associated with a specific constraint matrix

Parameters

• MDO.IntAttr attr – Attribute

• MDOConstr[][] constrs – Constraint matrix

Returns

The attribute value to be retrieved.

double[][] get(MDO.DoubleAttr attr, MDOConstr[][] constrs)

Retrieve the value of the double attribute associated with a specific constraint matrix

Parameters

• MDO.DoubleAttr attr – Attribute

• MDOConstr[][] constrs – Constraint matrix

Returns

The attribute value to be retrieved.

char[][] get(MDO.CharAttr attr, MDOConstr[][] constrs)

Retrieve the value of the char attribute associated with a specific constraint matrix

Parameters

• MDO.CharAttr attr – Attribute

• MDOConstr[][] constrs – Constraint matrix

Returns

The attribute value to be retrieved.

String[][] get(MDO.StringAttr attr, MDOConstr[][] constrs)

Retrieve the value of a String attribute associated with a specific constraint matrix

Parameters

• MDO.StringAttr attr – Attribute

• MDOConstr[][] constrs – Constraint matrix

Returns

The attribute value to be retrieved.

int[][][] get(MDO.IntAttr attr, MDOVar[][][] vars)

Retrieve the value of an int attribute associated with a three-dimensional array of specific variables

Parameters

• MDO.IntAttr attr – Attribute

• MDOVar[][][] vars – Variable 3D array

Returns

The attribute value to be retrieved.

double[][][] get(MDO.DoubleAttr attr, MDOVar[][][] vars)

Retrieve the value of the double attribute associated with a three-dimensional array of specific variables

Parameters

• MDO.DoubleAttr attr – Attribute

• MDOVar[][][] vars – Variable 3D array

Returns

The attribute value to be retrieved.

char[][][] get(MDO.CharAttr attr, MDOVar[][][] vars)

Retrieve the value of the char attribute associated with a three-dimensional array of specific variables

Parameters

• MDO.CharAttr attr – Attribute

• MDOVar[][][] vars – Variable 3D array

Returns

The attribute value to be retrieved.

int[] get(MDO.IntAttr attr, MDOVar[] vars)

Retrieve the value of a specific attribute associated with a variable

Parameters

• MDO.IntAttr attr – Attribute

• MDOVar[] vars – Associated variable

Returns

The attribute value to be retrieved.

String[][][] get(MDO.StringAttr attr, MDOVar[][][] vars)

Retrieve the value of a String attribute associated with a three-dimensional array of specific variables

Parameters

• MDO.StringAttr attr – Attribute

• MDOVar[][][] vars – Variable 3D array

Returns

The attribute value to be retrieved.

int[][][] get(MDO.IntAttr attr, MDOConstr[][][] constrs)

Retrieve the value of an int attribute associated with a specified constrained three-dimensional array.

Parameters

• MDO.IntAttr attr – Attribute

• MDOConstr[][][] constrs – Constrained 3D array

Returns

The attribute value to be retrieved.

double[][][] get(MDO.DoubleAttr attr, MDOConstr[][][] constrs)

Retrieve the value of the double attribute associated with a specified constrained three-dimensional array.

Parameters

• MDO.DoubleAttr attr – Attribute

• MDOConstr[][][] constrs – Constrained 3D array

Returns

The attribute value to be retrieved.

char[][][] get(MDO.CharAttr attr, MDOConstr[][][] constrs)

Retrieve the value of the char attribute associated with a specific constraint 3D array

Parameters

• MDO.CharAttr attr – Attribute

• MDOConstr[][][] constrs – Constrained 3D array

Returns

The attribute value to be retrieved.

String[][][] get(MDO.StringAttr attr, MDOConstr[][][] constrs)

Retrieve the value of a String attribute associated with a specified constrained three-dimensional array.

Parameters

• MDO.StringAttr attr – Attribute

• MDOConstr[][][] constrs – Constrained 3D array

Returns

The attribute value to be retrieved.

int get(MDO.IntParam param)

Retrieve the value of an int parameter by name

Parameters

MDO.IntParam param – Parameter name

Returns

The current value of the parameter to be retrieved.

double get(MDO.DoubleParam param)

Retrieve the value of the double parameter by its name

Parameters

MDO.DoubleParam param – Parameter name

Returns

The current value of the parameter to be retrieved.

String get(MDO.StringParam param)

Retrieve the value of a String parameter by name

Parameters

MDO.StringParam param – Parameter name

Returns

The current value of the parameter to be retrieved.

int[] get(MDO.IntAttr attr, MDOGenConstr[] genconstrs)

Retrieve the value of a specific int attribute associated with specific general constraints

Parameters

• MDO.IntAttr attr – Attribute

• MDOGenConstr[] genconstrs – Associated general constraints

Returns

The attribute value to be retrieved.

String[] get(MDO.StringAttr attr, MDOGenConstr[] genconstrs)

Retrieve the value of a specific attribute associated with general constraints

Parameters

• MDO.StringAttr attr – Attribute

• MDOGenConstr[] genconstrs – Associated general constraints

Returns

The attribute value to be retrieved.

double[] get(MDO.DoubleAttr attr, MDOVar[] vars)

Retrieve the value of a specific attribute associated with a variable

Parameters

• MDO.DoubleAttr attr – Attribute

• MDOVar[] vars – Associated variable

Returns

The attribute value to be retrieved.

int[] get(MDO.IntAttr attr, MDOGenConstr[] genconstrs, int start, int len)

Retrieve the value of a specific int attribute associated with specific general constraints

Parameters

• MDO.IntAttr attr – Attribute

• MDOGenConstr[] genconstrs – Constraint array, some of which are associated constraints

• int start – The starting index of the array.

• int len – Number of associated constraints

Returns

The attribute value to be retrieved.

String[] get(MDO.StringAttr attr, MDOGenConstr[] genconstrs, int start, int len)

Retrieve the value of a specific attribute associated with general constraints

Parameters

• MDO.StringAttr attr – Attribute

• MDOGenConstr[] genconstrs – Associated general constraints

• int start – The starting index of the array.

• int len – Number of associated constraints

Returns

The attribute value to be retrieved.

int[][] get(MDO.IntAttr attr, MDOGenConstr[][] genconstrs)

Retrieve the value of a specific int attribute associated with specific general constraints

Parameters

• MDO.IntAttr attr – Attribute

• MDOGenConstr[][] genconstrs – Associated general constraints

Returns

The attribute value to be retrieved.

String[][] get(MDO.StringAttr attr, MDOGenConstr[][] genconstrs)

Retrieve the value of a specific attribute associated with general constraints

Parameters

• MDO.StringAttr attr – Attribute

• MDOGenConstr[][] genconstrs – Associated general constraints

Returns

The attribute value to be retrieved.

int[][][] get(MDO.IntAttr attr, MDOGenConstr[][][] genconstrs)

Retrieve the value of a specific int attribute associated with specific general constraints

Parameters

• MDO.IntAttr attr – Attribute

• MDOGenConstr[][][] genconstrs – Associated general constraints

Returns

The attribute value to be retrieved.

String[][][] get(MDO.StringAttr attr, MDOGenConstr[][][] genconstrs)

Retrieve the value of a specific attribute associated with general constraints

Parameters

• MDO.StringAttr attr – Attribute

• MDOGenConstr[][][] genconstrs – Associated general constraints

Returns

The attribute value to be retrieved.

double[] get(MDO.DoubleAttr attr, MDOQConstr[] qconstrs)

Retrieve the value of a specific double attribute associated with specific quadratic constraints.

Parameters

• MDO.DoubleAttr attr – Attribute name.

• MDOQConstr[] qconstrs – Quadratic constraint array.

Returns

The attribute value to be retrieved.

string[] get(MDO.StringAttr attr, MDOQConstr[] qconstrs)

Retrieve the value of a specific string attribute associated with specific quadratic constraints.

Parameters

• MDO.StringAttr attr – Attribute name.

• MDOQConstr[] qconstrs – Quadratic constraint array.

Returns

The attribute value to be retrieved.

double[] get(MDO.DoubleAttr attr, MDOQConstr[] qconstrs, int start, int len)

Retrieve the value of a specific double attribute associated with specific quadratic constraints.

Parameters

• MDO.DoubleAttr attr – Attribute name.

• MDOQConstr[] qconstrs – Quadratic constraint array.

• int start – The starting index of the array.

• int len – Number of associated quadratic constraints.

Returns

The attribute value to be retrieved.

string[] get(MDO.StringAttr attr, MDOQConstr[] qconstrs, int start, int len)

Retrieve the value of a specific string attribute associated with specific quadratic constraints.

Parameters

• MDO.StringAttr attr – Attribute name.

• MDOQConstr[] qconstrs – Quadratic constraint array.

• int start – The starting index of the array.

• int len – Number of associated quadratic constraints.

Returns

The attribute value to be retrieved.

char[] get(MDO.CharAttr attr, MDOVar[] vars)

Retrieve the value of a specific attribute associated with a variable

Parameters

• MDO.CharAttr attr – Attribute

• MDOVar[] vars – Associated variable

Returns

The attribute value to be retrieved.

double[][] get(MDO.DoubleAttr attr, MDOQConstr[][] qconstrs)

Retrieve the value of a specific double attribute associated with specific quadratic constraints.

Parameters

• MDO.DoubleAttr attr – Attribute name.

• MDOQConstr[][] qconstrs – Quadratic constraint array.

Returns

The attribute value to be retrieved.

string[][] get(MDO.StringAttr attr, MDOQConstr[][] qconstrs)

Retrieve the value of a specific string attribute associated with specific quadratic constraints.

Parameters

• MDO.StringAttr attr – Attribute name.

• MDOQConstr[][] qconstrs – Quadratic constraint array.

Returns

The attribute value to be retrieved.

double[][][] get(MDO.DoubleAttr attr, MDOQConstr[][][] qconstrs)

Retrieve the value of a specific double attribute associated with specific quadratic constraints.

Parameters

• MDO.DoubleAttr attr – Attribute name.

• MDOQConstr[][][] qconstrs – Quadratic constraint array.

Returns

The attribute value to be retrieved.

string[][][] get(MDO.StringAttr attr, MDOQConstr[][][] qconstrs)

Retrieve the value of a specific string attribute associated with specific quadratic constraints.

Parameters

• MDO.StringAttr attr – Attribute name.

• MDOQConstr[][][] qconstrs – Quadratic constraint array.

Returns

The attribute value to be retrieved.

String[] get(MDO.StringAttr attr, MDOVar[] vars)

Retrieve the value of a specific attribute associated with a variable

Parameters

• MDO.StringAttr attr – Attribute

• MDOVar[] vars – Associated variable

Returns

The attribute value to be retrieved.

int[] get(MDO.IntAttr attr, MDOConstr[] constrs)

Retrieve the value of a specific attribute associated with a constraint

Parameters

• MDO.IntAttr attr – Attribute

• MDOConstr[] constrs – Associated constraint

Returns

The attribute value to be retrieved.

double[] get(MDO.DoubleAttr attr, MDOConstr[] constrs)

Retrieve the value of a specific attribute associated with a constraint.

Parameters

• MDO.DoubleAttr attr – Attribute

• MDOConstr[] constrs – Associated constraint

Returns

The attribute value to be retrieved.

char[] get(MDO.CharAttr attr, MDOConstr[] constrs)

Retrieve the value of a specific attribute associated with a constraint

Parameters

• MDO.CharAttr attr – Attribute

• MDOConstr[] constrs – Associated constraint

Returns

The attribute value to be retrieved.

double getCoeff(MDOConstr constr, MDOVar var)

Retrieve coefficient values of variables from constraint matrices

Parameters

• MDOConstr constr – Constraints to be queried

• MDOVar var – The name of the variable to be queried.

Returns

The coefficient value to be retrieved.

MDOColumn getCol(MDOVar var)

Retrieve the values of a column from a constraint matrix

Parameters

MDOVar var – Variables that represent columns

Returns

Constraint matrix columns to be retrieved

MDOConstr getConstr(int i)

Retrieve the ith constraint in this model

Parameters

int i – The index of the constraint to be retrieved.

Returns

Constraint to be retrieved

MDOConstr getConstrByName(String name)

Retrieve constraint by constraint name.

Parameters

String name – The name of the constraint to be retrieved.

Returns

Constraint to be retrieved.

MDOConstr[] getConstrs()

Retrieve all constraints in this model

Returns

All constraints in this model

MDOEnv getEnv()

Retrieve the environment associated with this model

Returns

The environment associated with the model

MDOGenConstr.Indicator getGenConstrIndicator(MDOGenConstr genconstr)

Retrieve a general constraint by its object.

Parameters

MDOGenConstr genconstr – The general constraint object.

Returns

The general constraint detailed data structure with 5 fields:

1. binVar: The binary variable of the indicator constraint.

2. binVal: The binary value when indicator constraint take effect.

3. expr: The linear expression of indicator constraint.

4. sense: The constraint sense of indicator constraint.

5. rhs: The right-hand-side value of indicator constraint.

MDOGenConstr[] getGenConstrs()

Retrieve all general constraints in this model

Returns

All general constraints in this model

MDOExpr getObjective()

Retrieve the objective function of this model

Returns

Objective function

MDOPsdConstr getPsdConstr(int i)

Retrieve the ith PSD constraint in this model

Parameters

int i – The index of the PSD constraint to be retrieved.

Returns

PSD constraint to be retrieved

MDOPsdConstr[] getPsdConstrs()

Retrieve all PSD constraints in this model

Returns

All PSD constraints in this model

MDOPsdVar getPsdVar(int i)

Retrieve the ith PSD variable

Parameters

int i – The index of the PSD variable to be retrieved.

Returns

PSD variable

MDOPsdVar[] getPsdVars()

Retrieve all PSD variables in this model

Returns

All PSD variables in this model

MDOQuadExpr getQCRow(MDOQConstr qconstr)

Retrieve left-hand-side quadratic expression for a quadratic constraint.

Parameters

MDOQConstr qconstr – Quadratic constraints to be retrieved.

Returns

The quadratic expression.

MDOQConstr getQConstrByName(String name)

Retrieve quadratic constraint by constraint name.

Parameters

String name – The name of the quadratic constraint to be retrieved.

Returns

Quadratic constraint to be retrieved.

MDOQConstr[] getQConstrs()

Retrieve all quadratic constraints in this model.

Returns

All quadratic constraints in this model.

MDOLinExpr getRow(MDOConstr constr)

Retrieve row from a constraint matrix by constraint

Parameters

MDOConstr constr – Constraint to be retrieved

Returns

Constraint matrix row to be retrieved

MDOSOS.Value getSOS(MDOSOS sos)

Retrieve the variables and coefficients contained in the SOS constraint.

Parameters

MDOSOS sos – [in] SOS constraint

Returns

The value of specified SOS constraint. It consists of 3 fields:

• An int SOS type (MDO.SOS_TYPE1 or MDO.SOS_TYPE2).

  • MDO_SOS_TYPE1(1)

    A maximum of one variable in a set is not equal to 0.

  • MDO_SOS_TYPE2(2)

    A maximum of two consecutive variables in a set are not equal to 0.

• All variables contained

• Wights associated to variables

MDOSOS[] getSOSs()

Retrieve all SOS constraints in the current model

Returns

Return a list of all SOS constraints in the model.

MDOVar getVar(int i)

Retrieve the ith variable in this model

Parameters

int i – The index of the variable to be retrieved.

Returns

The ith variable in this model

MDOVar getVarByName(String name)

Retrieve variables by name

Parameters

String name – The name of the variable to be retrieved

Returns

Variable

MDOVar[] getVars()

Retrieve all variables in this model

Returns

All variables in this model

void optimize()

Start optimizing the model

void read(String filename)

Load data from a file to an existing model

Parameters

String filename – The file name. Note that the file format and its compression type (optional) are encoded in the file name suffix. Valid suffixes are .prm and .mst. Valid compression types are .gz or .bz2.

void remove(MDOVar v)

Delete a variable from this model

Parameters

MDOVar v – The variable to delete

void remove(MDOConstr c)

Remove a constraint from this model

Parameters

MDOConstr c – The constraint to remove

void remove(MDOSOS sos)

Remove an SOS constraint from this model

Parameters

MDOSOS sos – The SOS constraint to remove

void remove(MDOGenConstr genconstr)

Remove a general constraint from this model

Parameters

MDOGenConstr genconstr – The general constraint to remove

void remove(MDOQConstr qc)

Remove an quadratic constraint from this model.

Parameters

MDOQConstr qc – The quadratic constraint to remove.

void reset()

Reset the model to the unsolved state, discard any previously calculated solutions, and clear only the solutions.

void reset(int clearall)

Reset the model to the unsolved state and discard any previously calculated solutions

Parameters

int clearall – Whether to clear all information instead of only the solution. 1 indicates yes, and 0 indicates that only the solution is cleared.

void set(MDO.IntParam param, int value)

Set the value of the int parameter.

Parameters

• MDO.IntParam param – Parameter

• int value – The new value of the parameter.

void set(MDO.DoubleParam param, double value)

Set the value of the double parameter

Parameters

• MDO.DoubleParam param – Parameter

• double value – The new value of the parameter.

void set(MDO.StringAttr attr, MDOVar[] vars, String[] values)

Set the value of a specific String attribute associated with a specified variable

Parameters

• MDO.StringAttr attr – Attribute

• MDOVar[] vars – Variable array

• String[] values – New value array

void set(MDO.IntAttr attr, MDOConstr[] constrs, int[] values)

Set the value of a specific int attribute associated with a specified constraint

Parameters

• MDO.IntAttr attr – Attribute

• MDOConstr[] constrs – Associated constraint

• int[] values – The new value of the attribute.

void set(MDO.DoubleAttr attr, MDOConstr[] constrs, double[] val)

Set the value of a specific double attribute associated with a specified constraint

Parameters

• MDO.DoubleAttr attr – Attribute

• MDOConstr[] constrs – Associated constraint

• double[] val – The new value of the attribute.

void set(MDO.CharAttr attr, MDOConstr[] constrs, char[] values)

Set the value of a specific char attribute associated with specified constraints

Parameters

• MDO.CharAttr attr – Attribute

• MDOConstr[] constrs – Associated constraints

• char[] values – The new value of the attribute.

void set(MDO.StringAttr attr, MDOConstr[] xconstrs, String[] values)

Set the value of a specific String attribute associated with specified constraints

Parameters

• MDO.StringAttr attr – Attribute

• MDOConstr[] xconstrs – Associated constraints

• String[] values – The new value of the attribute.

void set(MDO.IntAttr attr, MDOVar[] vars, int[] values, int start, int len)

Set the value of a specific int attribute associated with specified variable

Parameters

• MDO.IntAttr attr – Attribute

• MDOVar[] vars – An array of variables, some of which are associated variables.

• int[] values – An array of values, some of which are new values of the attribute.

• int start – The starting index of the array.

• int len – The number of attributes to be set

void set(MDO.DoubleAttr attr, MDOVar[] vars, double[] values, int start, int len)

Set the value of a specific double attribute associated with specified variables

Parameters

• MDO.DoubleAttr attr – Attribute

• MDOVar[] vars – An array of variables, some of which are associated variables.

• double[] values – An array of values, some of which are new values of the attribute.

• int start – The starting index of the array.

• int len – The number of attributes to be set

void set(MDO.CharAttr attr, MDOVar[] vars, char[] values, int start, int len)

Set the value of a specific attribute associated with specified variables

Parameters

• MDO.CharAttr attr – Attribute

• MDOVar[] vars – An array of variables, some of which are associated variables.

• char[] values – An array of values, some of which are new values of the attribute.

• int start – The starting index of the array.

• int len – The number of attributes to be set

void set(MDO.StringAttr attr, MDOVar[] vars, String[] values, int start, int len)

Set the value of a specific attribute associated with specified variables

Parameters

• MDO.StringAttr attr – Attribute

• MDOVar[] vars – An array of variables, some of which are associated variables.

• String[] values – An array of values, some of which are new values of the attribute.

• int start – The starting index of the array.

• int len – The number of attributes to be set

void set(MDO.IntAttr attr, MDOConstr[] constrs, int[] values, int start, int len)

Set the value of a specific int attribute associated with specified constraints

Parameters

• MDO.IntAttr attr – Attribute

• MDOConstr[] constrs – Constraint array, some of which are associated constraints

• int[] values – An array of values, some of which are new values of the attribute.

• int start – The starting index of the array.

• int len – The number of attributes to be set

void set(MDO.StringParam param, String value)

Set the value of a string parameter

Parameters

• MDO.StringParam param – Parameter name

• String value – The new value of the parameter.

void set(MDO.DoubleAttr attr, MDOConstr[] constrs, double[] values, int start, int len)

Set the value of a specific double attribute associated with a specified constraint

Parameters

• MDO.DoubleAttr attr – Attribute name

• MDOConstr[] constrs – Constraint array, some of which are associated constraints

• double[] values – An array of values, some of which are new values of the attribute.

• int start – The starting index of the array.

• int len – The number of attributes to be set

void set(MDO.CharAttr attr, MDOConstr[] constrs, char[] values, int start, int len)

Set the value of a specific char attribute associated with a specified constraint

Parameters

• MDO.CharAttr attr – Attribute

• MDOConstr[] constrs – Constraint array, some of which are associated constraints

• char[] values – An array of values, some of which are new values of the attribute.

• int start – The starting index of the array.

• int len – The number of attributes to be set

void set(MDO.StringAttr attr, MDOConstr[] constrs, String[] values, int start, int len)

Set the value of a specific attribute associated with a specified constraint

Parameters

• MDO.StringAttr attr – Attribute

• MDOConstr[] constrs – Constraint array, some of which are associated constraints

• String[] values – An array of values, some of which are new values of the attribute.

• int start – The starting index of the array.

• int len – The number of attributes to be set

void set(MDO.IntAttr attr, MDOVar[][] vars, int[][] values)

Set the value of the int attribute associated with a specific variable matrix

Parameters

• MDO.IntAttr attr – Attribute to be modified

• MDOVar[][] vars – Associated variable matrix

• int[][] values – The new value of the attribute to be set.

void set(MDO.DoubleAttr attr, MDOVar[][] vars, double[][] values)

Set the value of the double attribute associated with a specific variable matrix

Parameters

• MDO.DoubleAttr attr – Attribute to be modified

• MDOVar[][] vars – Associated variable matrix

• double[][] values – The new value of the attribute to be set.

void set(MDO.CharAttr attr, MDOVar[][] vars, char[][] values)

Set the value of the char attribute associated with a specific variable matrix

Parameters

• MDO.CharAttr attr – Attribute to be modified

• MDOVar[][] vars – Associated variable matrix

• char[][] values – The new value of the attribute to be set.

void set(MDO.StringAttr attr, MDOVar[][] vars, String[][] values)

Set the value of the String attribute associated with a specific variable matrix

Parameters

• MDO.StringAttr attr – Attribute to be modified

• MDOVar[][] vars – Associated variable matrix

• String[][] values – The new value of the attribute to be set.

void set(MDO.IntAttr attr, MDOConstr[][] constrs, int[][] values)

Set the value of the int attribute associated with a specific constraint matrix

Parameters

• MDO.IntAttr attr – Attribute to be modified

• MDOConstr[][] constrs – Associated constraint matrix

• int[][] values – The new value of the attribute to be set.

void set(MDO.DoubleAttr attr, MDOConstr[][] constrs, double[][] values)

Set the value of the double attribute associated with a specific constraint matrix

Parameters

• MDO.DoubleAttr attr – Attribute to be modified

• MDOConstr[][] constrs – Associated constraint matrix

• double[][] values – The new value of the attribute to be set.

void set(MDO.CharAttr attr, MDOConstr[][] constrs, char[][] values)

Set the value of the char attribute associated with a specific constraint matrix

Parameters

• MDO.CharAttr attr – Attribute to be modified

• MDOConstr[][] constrs – Associated constraint matrix

• char[][] values – The new value of the attribute to be set.

void set(String param, String value)

Set the value of the parameter. The type of the input parameter depends on the parameter itself.

Parameters

• String param – Parameter

• String value – The string representation of the new value of the parameter.

void set(MDO.StringAttr attr, MDOConstr[][] constrs, String[][] values)

Set the value of the String attribute associated with a specific constraint matrix

Parameters

• MDO.StringAttr attr – Attribute to be modified

• MDOConstr[][] constrs – Associated constraint matrix

• String[][] values – The new value of the attribute to be set.

void set(MDO.IntAttr attr, MDOVar[][][] vars, int[][][] values)

Set the value of the int attribute associated with a specific constraint matrix

Parameters

• MDO.IntAttr attr – Attribute to be modified

• MDOVar[][][] vars – 3D array of associated variables

• int[][][] values – The new value of the attribute to be set.

void set(MDO.DoubleAttr attr, MDOVar[][][] vars, double[][][] values)

Set the value of the double attribute associated with a specific constraint matrix

Parameters

• MDO.DoubleAttr attr – Attribute to be modified

• MDOVar[][][] vars – 3D array of associated variables

• double[][][] values – The new value of the attribute to be set.

void set(MDO.CharAttr attr, MDOVar[][][] vars, char[][][] values)

Set the value of the char attribute associated with a specific constraint matrix

Parameters

• MDO.CharAttr attr – Attribute to be modified

• MDOVar[][][] vars – 3D array of associated variables

• char[][][] values – The new value of the attribute to be set.

void set(MDO.StringAttr attr, MDOVar[][][] vars, String[][][] values)

Set the value of the String attribute associated with a specific constraint matrix

Parameters

• MDO.StringAttr attr – Attribute to be modified

• MDOVar[][][] vars – 3D array of associated variables

• String[][][] values – The new value of the attribute to be set.

void set(MDO.IntAttr attr, MDOConstr[][][] constrs, int[][][] values)

Set the value of the int attribute associated with a specific constraint 3D array

Parameters

• MDO.IntAttr attr – Attribute to be modified

• MDOConstr[][][] constrs – Associated constraint 3D array

• int[][][] values – The new value of the attribute to be set.

void set(MDO.DoubleAttr attr, MDOConstr[][][] constrs, double[][][] values)

Set the value of the double attribute associated with a specific constraint 3D array

Parameters

• MDO.DoubleAttr attr – Attribute to be modified

• MDOConstr[][][] constrs – Associated constraint 3D array

• double[][][] values – The new value of the attribute to be set.

void set(MDO.CharAttr attr, MDOConstr[][][] constrs, char[][][] values)

Set the value of the char attribute associated with a specific constraint 3D array

Parameters

• MDO.CharAttr attr – Attribute to be modified

• MDOConstr[][][] constrs – Associated constraint 3D array

• char[][][] values – The new value of the attribute to be set.

void set(MDO.StringAttr attr, MDOConstr[][][] constrs, String[][][] values)

Set the value of the String attribute associated with a specific constraint 3D array

Parameters

• MDO.StringAttr attr – Attribute to be modified

• MDOConstr[][][] constrs – Associated constraint 3D array

• String[][][] values – The new value of the attribute to be set.

void set(MDO.StringAttr attr, MDOGenConstr[] genconstrs, String[] values)

Set the value of the String attribute associated with a specific general constraint list

Parameters

• MDO.StringAttr attr – Attribute to be modified

• MDOGenConstr[] genconstrs – Associated general constraint list

• String[] values – The new value of the attribute to be set.

void set(MDO.IntAttr attr, int value)

Set the value of the int attribute

Parameters

• MDO.IntAttr attr – Attribute

• int value – New value

void set(MDO.StringAttr attr, MDOConstr[] constrs, String[] values, int start, int len)

Set the value of a specific attribute associated with specified a general constraint list

Parameters

• MDO.StringAttr attr – Attribute

• MDOConstr[] constrs – Constraint array, some of which are associated general constraints

• String[] values – An array of values, some of which are new values of the attribute.

• int start – The starting index of the array.

• int len – The number of attributes to be set

void set(MDO.StringAttr attr, MDOGenConstr[][] genconstrs, String[][] values)

Set the value of the String attribute associated with a specific general constraint matrix

Parameters

• MDO.StringAttr attr – Attribute to be modified

• MDOGenConstr[][] genconstrs – Associated constraint matrix

• String[][] values – The new value of the attribute to be set.

void set(MDO.StringAttr attr, MDOGenConstr[][][] genconstrs, String[][][] values)

Set the value of the String attribute associated with a specific general constraint cube.

Parameters

• MDO.StringAttr attr – Attribute to be modified

• MDOGenConstr[][][] genconstrs – Associated constraint cube

• String[][][] values – The new value of the attribute to be set.

void set(MDO.DoubleAttr attr, MDOQConstr[] qconstrs, double[] values)

设置和指定二次约束关联的特定double属性的值。

Parameters

• MDO.DoubleAttr attr – 属性名称。

• MDOQConstr[] qconstrs – 二次约束数组。

• double[] values – 值数组。

void set(MDO.StringAttr attr, MDOQConstr[] qconstrs, String[] values)

设置和指定二次约束关联的特定string属性的值。

Parameters

• MDO.StringAttr attr – 属性名称。

• MDOQConstr[] qconstrs – 二次约束数组。

• String[] values – 值数组。

void set(MDO.DoubleAttr attr, MDOQConstr[] qconstrs, double[] values, int start, int len)

设置和指定二次约束关联的特定double属性的值。

Parameters

• MDO.DoubleAttr attr – 属性名称。

• MDOQConstr[] qconstrs – 二次约束数组。

• double[] values – 值数组。

• int start – 数组的起始索引

• int len – 要设置的属性的数量

void set(MDO.StringAttr attr, MDOQConstr[] qconstrs, String[] values, int start, int len)

设置和指定二次约束关联的特定string属性的值。

Parameters

• MDO.StringAttr attr – 属性名称。

• MDOQConstr[] qconstrs – 二次约束数组。

• String[] values – 值数组。

• int start – 数组的起始索引

• int len – 要设置的属性的数量

void set(MDO.DoubleAttr attr, double value)

Set the value of the double attribute.

Parameters

• MDO.DoubleAttr attr – Attribute name

• double value – New value

void set(MDO.DoubleAttr attr, MDOQConstr[][] qconstrs, double[][] values)

设置和指定二次约束关联的特定double属性的值。

Parameters

• MDO.DoubleAttr attr – 属性名称。

• MDOQConstr[][] qconstrs – 二次约束数组。

• double[][] values – 值数组。

void set(MDO.StringAttr attr, MDOQConstr[][] qconstrs, String[][] values)

设置和指定二次约束关联的特定string属性的值。

Parameters

• MDO.StringAttr attr – 属性名称。

• MDOQConstr[][] qconstrs – 二次约束数组。

• String[][] values – 值数组。

void set(MDO.DoubleAttr attr, MDOQConstr[][][] qconstrs, double[][][] values)

设置和指定二次约束关联的特定double属性的值。

Parameters

• MDO.DoubleAttr attr – 属性名称。

• MDOQConstr[][][] qconstrs – 二次约束数组。

• double[][][] values – 值数组。

void set(MDO.StringAttr attr, MDOQConstr[][][] qconstrs, String[][][] values)

设置和指定二次约束关联的特定string属性的值。

Parameters

• MDO.StringAttr attr – 属性名称。

• MDOQConstr[][][] qconstrs – 二次约束数组。

• String[][][] values – 值数组。

void set(MDO.StringAttr attr, String val)

Set the value of a String attribute.

Parameters

• MDO.StringAttr attr – Attribute name

• String val – New value

set(MDO.IntAttr attr, MDOVar[] vars, int[] values)

Set the value of a specific attribute associated with specified variables

Parameters

• MDO.IntAttr attr – Attribute

• MDOVar[] vars – Associated variables

• int[] values – The new value of the attribute.

void set(MDO.DoubleAttr attr, MDOVar[] vars, double[] values)

Set the value of a specific attribute associated with a specified variable

Parameters

• MDO.DoubleAttr attr – Attribute

• MDOVar[] vars – Associated variables

• double[] values – The new value of the attribute.

void set(MDO.CharAttr attr, MDOVar[] vars, char[] values)

Set the value of a specific attribute associated with a specified variable

Parameters

• MDO.CharAttr attr – Attribute

• MDOVar[] vars – Associated variables

• char[] values – The new value of the attribute.

void setCallback(MDOCallback callback)

Set up a user defined callback class object.

Parameters

MDOCallback callback – The user defined callback class object.

void setObjective(MDOExpr expr, int sense)

Set the objective function

Parameters

• MDOExpr expr – Objective function to be set

• int sense – The optimization direction. MDO.MAXIMIZE(-1) refers to maximization and MDO.MINIMIZE(1) refers to minimization. If you enter other values, the current optimization direction will not be changed. The default optimization sense is MDO_MINIMIZE.

void write(String filename)

Write model data to a file

Parameters

String filename – The path to file where data serialized. Note that data type and its compression type (optionally) is encoded in the file name suffix. Valid suffixes are .lp, .mps and .qps for model itself, .sol, .bas, .prm and .mst for solution data, basis data, parameter settings and MIP starts. optionally followed by its compression type .gz or .bz2.