UnionScopeChangeOptimizer (Eclipse RDF4J 4.3.2)

java.lang.Object
- org.eclipse.rdf4j.query.algebra.evaluation.optimizer.UnionScopeChangeOptimizer

All Implemented Interfaces:

QueryOptimizer

Direct Known Subclasses:

UnionScopeChangeOptimizer
```
public class UnionScopeChangeOptimizer
extends Object
implements QueryOptimizer
```
Inspect Union clauses to check if scope change can be avoided (allowing injection of pre-bound vars into union arguments).

Author:

Jeen Broekstra

- Constructor Summary
  
  Constructors
  Constructor Description
  
  UnionScopeChangeOptimizer()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  void optimize(TupleExpr tupleExpr, Dataset dataset, BindingSet bindings)
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- UnionScopeChangeOptimizer
```
public UnionScopeChangeOptimizer()
```

Method Detail

optimize

public void optimize(TupleExpr tupleExpr,
                     Dataset dataset,
                     BindingSet bindings)

Specified by:: optimize in interface QueryOptimizer