SameTermFilterOptimizer (Eclipse RDF4J 4.2.4)

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

All Implemented Interfaces:

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

A query optimizer that embeds Filters with SameTerm operators in statement patterns as much as possible. Operators like sameTerm(X, Y) are processed by renaming X to Y (or vice versa). Operators like sameTerm(X, ) are processed by assigning the URI to all occurring variables with name X.

Author:

Arjohn Kampman, James Leigh

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`protected static class`	`SameTermFilterOptimizer.BindingSetAssignmentCollector`	Deprecated, for removal: This API element is subject to removal in a future version.
`protected static class`	`SameTermFilterOptimizer.SameTermFilterVisitor`	Deprecated, for removal: This API element is subject to removal in a future version.
`protected static class`	`SameTermFilterOptimizer.VarBinder`	Deprecated, for removal: This API element is subject to removal in a future version.
`protected static class`	`SameTermFilterOptimizer.VarRenamer`	Deprecated, for removal: This API element is subject to removal in a future version.

Constructor Summary

Constructors
Constructor Description

SameTermFilterOptimizer()
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

- Constructor Detail
  - SameTermFilterOptimizer
```
public SameTermFilterOptimizer()
```
    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