VariableBindingBasedCostEstimator

java.lang.Object
- org.eclipse.incquery.runtime.localsearch.planner.cost.impl.VariableBindingBasedCostEstimator

All Implemented Interfaces:

ICostEstimator

Deprecated.
This is used by LocalSearchPlannerStrategy. Use the LocalSearchRuntimeBasedStrategy and its belonging components instead.
```
@Deprecated
public class VariableBindingBasedCostEstimator
extends java.lang.Object
implements ICostEstimator
```
This class can be used to calculate cost of application of a constraint with a given adornment. For now the logic is based on the following principles:
The transitive closures, NACs and count finds are the most expensive operations
The number of free variables increase the cost
If all the variables of a constraint are free, then its cost equals to twice the number of its parameter variables. This solves the problem of unnecessary iteration over instances at the beginning of a plan (thus causing very long run times when executing the plan) by applying constraints based on structural features as soon as possible.

Constructors
Constructor and Description
`VariableBindingBasedCostEstimator()` Deprecated.

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`double`	`getCost(SubPlan currentPlan, PConstraint constraint)` Deprecated. According to the current variable binding estimates the cost of the application of the given constraint

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

Class VariableBindingBasedCostEstimator