DisjunctiveConstraintOptimizer (Eclipse RDF4J 4.2.4)

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

All Implemented Interfaces:

QueryOptimizer
```
public class DisjunctiveConstraintOptimizer
extends Object
implements QueryOptimizer
```
A query optimizer that optimize disjunctive constraints on tuple expressions. Currently, this optimizer unions a clone of the underlying tuple expression with the original expression for each SameTerm operator, moving the SameTerm to the cloned tuple expression.

Author:

Arjohn Kampman, James Leigh

- Constructor Summary
  
  Constructors
  Constructor Description
  
  DisjunctiveConstraintOptimizer()
- 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
- DisjunctiveConstraintOptimizer
```
public DisjunctiveConstraintOptimizer()
```

Method Detail

optimize

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

Specified by:: optimize in interface QueryOptimizer