Module org.maxicp

Package org.maxicp.modeling

Class DecisionVarCollector

java.lang.Object

org.maxicp.modeling.DecisionVarCollector

public class DecisionVarCollector
extends Object

Walks the full constraint / expression graph of a ModelDispatcher and collects all candidate decision variables declared by DecisionVarsProvider nodes.

Walk strategy:

1. For every Constraint: if it implements DecisionVarsProvider, harvest its decisionVariables().
2. Descend the expression sub-tree of every scope expression via Expression.subexpressions(), collecting from any DecisionVarsProvider node found (e.g. an Element1D embedded inside a sum).

Results are deduplicated by identity, preserving first-seen order.

See Also:

• DecisionVarsProvider

Method Summary

Modifier and Type	Method	Description
static List<IntExpression>	collect(ModelDispatcher model)	Collects all candidate decision variables inferred from the model's constraint graph.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

collect

public static List<IntExpression> collect(ModelDispatcher model)

Collects all candidate decision variables inferred from the model's constraint graph.

Parameters:

model - the model to inspect

Returns:

ordered, identity-deduplicated, unmodifiable list of decision variables