XPRSprob.ConstraintCreator Class

Class to buffer constraints and create them in chunks.

Inheritance Hierarchy

System.Object
   Optimizer.XPRSprob.RowCreator
     Optimizer.XPRSprob.ConstraintCreator

Namespace:   Optimizer
Assembly:  xprsdn (in xprsdn.dll) Version: 44.01.04

Syntax

C#

public sealed class ConstraintCreator : XPRSprob.RowCreator

The XPRSprob.ConstraintCreator type exposes the following members.

Constructors

	Name	Description
	XPRSprob.ConstraintCreator(XPRSprob, Boolean, String)	Create a new creator with default buffer sizes.
	XPRSprob.ConstraintCreator(XPRSprob, Int32, Int32, Boolean, String)	Create a new creator with specified buffers sizes.

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Methods

	Name	Description
	AddGeneralConstraint	Add a general constraint in a single shot.
	AddNonzero(Int32, Double)	Add a single non-zero to the current row. (Inherited from XPRSprob.RowCreator.)
	AddNonzero(Int32, Int32, Double)	Add a single quadratic non-zero to the current row. Note: The information is passed to the low-level API as is! Check the C reference documentation for how constraints are represented there. In particular, check whether off-diagonal elements may have to be doubled or halved. (Inherited from XPRSprob.RowCreator.)
	AddNonzeros	Add coefficients to the current row. (Inherited from XPRSprob.RowCreator.)
	AddPWL	Add a piecewise linear constraint.
	AddRhs	Add a value to the right-hand side of the current row. (Inherited from XPRSprob.RowCreator.)
	AddRow	Add a row in a single shot. (Inherited from XPRSprob.RowCreator.)
	AddSet	Add a new SOS constraint.
	AddToken	Append a token to this extractor. (Inherited from XPRSprob.RowCreator.)
	ApplyRange	Apply a range constraint to the row that is currently built. The function assumes that the right-hand side has already been setup. It is an error to modify type or right-hand side of the current row after calling this function. (Inherited from XPRSprob.RowCreator.)
	CheckForVariables	Check whether referencing Variable instances should raise an exception. If it should, then raise the required exception. The text in this exception is the errorIfVariables field that was passed to the constructor. (Inherited from XPRSprob.RowCreator.)
	Commit	Flush all buffers. (Overrides XPRSprob.RowCreator.Commit().)
	ConditionalCommit	Check whether buffers are very big and need committing. If the buffer sizes exceed the thresholds then call commit. (Overrides XPRSprob.RowCreator.ConditionalCommit().)
	DereferenceVariable	Derefence a value. Converts a variable object into a variable index. This is different from x.GetIndex() as it also checks whether the problem for which we are extracting the current formula is currently in a state in which variables can be Dereferenced (i.e. not in a callback and not in a presolved state). If it is not then an exception is raised. (Inherited from XPRSprob.RowCreator.)
	EndExpression	Signal that a (sub)expression has been extracted. (Inherited from XPRSprob.RowCreator.)
	Equals	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	FinishRow	Tell this instance that all data for the current rows has been added. This calls ConditionalCommit(). (Inherited from XPRSprob.RowCreator.)
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetPostfixExtractor	Get a IPostfixExtractor that can extract formulas into this RowCreator. (Inherited from XPRSprob.RowCreator.)
	GetRowCount	Get the current row count, including buffered rows that are not yet committed. (Inherited from XPRSprob.RowCreator.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	NormalizeCurrentRow	Sort and merge duplicates in the current row. Must be called before FinishRow() is called. (Inherited from XPRSprob.RowCreator.)
	SetName	Set the name of the current row. (Inherited from XPRSprob.RowCreator.)
	SetType	Set the type of the current row. (Inherited from XPRSprob.RowCreator.)
	StartExpression	(Inherited from XPRSprob.RowCreator.)
	ToString	Returns a String that represents the current Object. (Inherited from Object.)
	Undo	Undo all changes ever done by this instance. The creator should not be used after calling this function. (Overrides XPRSprob.RowCreator.Undo().)

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Fields

	Name	Description
	colinds	Non-zero indices. (Inherited from XPRSprob.RowCreator.)
	created	The number of rows this instance created. (Inherited from XPRSprob.RowCreator.)
	firstRow	objects.Index of first row this instance will create. (Inherited from XPRSprob.RowCreator.)
	formulaRows	Indices of rows that contain formulas. This can be null if no formulas have been collected so far. (Inherited from XPRSprob.RowCreator.)
	prob	The problem instance to which things are added. (Inherited from XPRSprob.RowCreator.)
	qcoef	Value of quadratic non-zero triplets. This may be null if there are no quadratic triples. (Inherited from XPRSprob.RowCreator.)
	qind1	First variable of quadratic non-zero triplets. This may be null if there are no quadratic triples. (Inherited from XPRSprob.RowCreator.)
	qind2	Second variable of quadratic non-zero triplets. This may be null if there are no quadratic triples. (Inherited from XPRSprob.RowCreator.)
	rhsvals	Inequality right-hand side value. This is always one element more than the number of rows actually completed so far. (Inherited from XPRSprob.RowCreator.)
	rowcoefs	Non-zero coefficients. (Inherited from XPRSprob.RowCreator.)
	start	Inequality starting offsets. This is always one element more than the number of rows actually completed so far. (Inherited from XPRSprob.RowCreator.)

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See Also

Reference

Optimizer Namespace

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