ConstantOptimizer (Eclipse RDF4J 4.2.4)

java.lang.Object
- org.eclipse.rdf4j.query.algebra.evaluation.impl.ConstantOptimizer

All Implemented Interfaces:

QueryOptimizer
```
@Deprecated(forRemoval=true,
            since="4.1.0")
public class ConstantOptimizer
extends Object
implements QueryOptimizer
```
Deprecated, for removal: This API element is subject to removal in a future version.

A query optimizer that optimizes constant value expressions.

Author:

James Leigh, Arjohn Kampman

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`protected class`	`ConstantOptimizer.ConstantVisitor`	Deprecated, for removal: This API element is subject to removal in a future version.
`protected class`	`ConstantOptimizer.VarNameCollector`	Deprecated, for removal: This API element is subject to removal in a future version.

Field Summary

Fields
Modifier and Type	Field	Description
`protected static org.slf4j.Logger`	`logger`	Deprecated, for removal: This API element is subject to removal in a future version.
`protected EvaluationStrategy`	`strategy`	Deprecated, for removal: This API element is subject to removal in a future version.

Constructor Summary

Constructors
Constructor Description

ConstantOptimizer(EvaluationStrategy strategy)
Deprecated, for removal: This API element is subject to removal in a future version.

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`void`	`optimize(TupleExpr tupleExpr, Dataset dataset, BindingSet bindings)`	Deprecated, for removal: This API element is subject to removal in a future version. Applies generally applicable optimizations to the supplied query: variable assignments are inlined.

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

- Field Detail
  - logger
```
protected static final org.slf4j.Logger logger
```
    Deprecated, for removal: This API element is subject to removal in a future version.
  - strategy
```
protected final EvaluationStrategy strategy
```
    Deprecated, for removal: This API element is subject to removal in a future version.
- Constructor Detail
  - ConstantOptimizer
```
public ConstantOptimizer(EvaluationStrategy strategy)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
- Method Detail
  - optimize
```
public void optimize(TupleExpr tupleExpr,
                     Dataset dataset,
                     BindingSet bindings)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Applies generally applicable optimizations to the supplied query: variable assignments are inlined.
    
    Specified by:
    
    optimize in interface QueryOptimizer