QueryJoinOptimizer (Eclipse RDF4J 4.2.4)

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

All Implemented Interfaces:

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

A query optimizer that re-orders nested Joins.

Author:

Arjohn Kampman, James Leigh

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`protected class`	`QueryJoinOptimizer.JoinVisitor`	Deprecated. This class is protected for historic reasons only, and will be made private in a future major release.

Field Summary

Fields
Modifier and Type Field Description

protected EvaluationStatistics statistics
Deprecated, for removal: This API element is subject to removal in a future version.

Constructor Summary

Constructors
Constructor	Description
`QueryJoinOptimizer()`	Deprecated, for removal: This API element is subject to removal in a future version.
`QueryJoinOptimizer(EvaluationStatistics statistics)`	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: path expressions are sorted from more to less specific.

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

- Field Detail
  - statistics
```
protected final EvaluationStatistics statistics
```
    Deprecated, for removal: This API element is subject to removal in a future version.
- Constructor Detail
  - QueryJoinOptimizer
```
public QueryJoinOptimizer()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
  - QueryJoinOptimizer
```
public QueryJoinOptimizer(EvaluationStatistics statistics)
```
    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: path expressions are sorted from more to less specific.
    
    Specified by:
    
    optimize in interface QueryOptimizer
    
    Parameters:
    
    tupleExpr -