public class SameTermFilterOptimizer extends Object implements QueryOptimizer
Filter
s 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,
Modifier and Type | Class and Description |
---|---|
protected static class |
SameTermFilterOptimizer.BindingSetAssignmentCollector |
protected static class |
SameTermFilterOptimizer.SameTermFilterVisitor |
protected static class |
SameTermFilterOptimizer.VarBinder |
protected static class |
SameTermFilterOptimizer.VarRenamer |
Constructor and Description |
---|
SameTermFilterOptimizer() |
Modifier and Type | Method and Description |
---|---|
void |
optimize(TupleExpr tupleExpr,
Dataset dataset,
BindingSet bindings)
Applies generally applicable optimizations to the supplied query: variable assignments are inlined.
|
public void optimize(TupleExpr tupleExpr, Dataset dataset, BindingSet bindings)
optimize
in interface QueryOptimizer
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