org.eclipse.rdf4j.query.algebra

Interface TupleExpr

All Superinterfaces:

Cloneable, QueryModelNode, Serializable

All Known Implementing Classes:

AbstractNaryTupleOperator, ArbitraryLengthPath, BinaryTupleOperator, BindingSetAssignment, DescribeOperator, Difference, Distinct, EmptySet, Extension, ExternalSet, Filter, Group, Intersection, Join, LeftJoin, MultiProjection, NaryJoin, Order, OwnedTupleExpr, Projection, QueryRoot, Reduced, Service, SingletonSet, Slice, StatementPattern, TupleFunctionCall, UnaryTupleOperator, Union, ZeroLengthPath

public interface TupleExpr
extends QueryModelNode

An expression that evaluates to RDF tuples.

Method Summary

Modifier and Type	Method and Description
TupleExpr	clone() Returns a (deep) clone of this query model node.
Set<String>	getAssuredBindingNames() Gets the names of the bindings that are guaranteed to be present in the results produced by this tuple expression.
Set<String>	getBindingNames() Gets the names of the bindings that are, or can be, returned by this tuple expression when it is evaluated.

Methods inherited from interface org.eclipse.rdf4j.query.algebra.QueryModelNode

equals, getParentNode, getSignature, replaceChildNode, replaceWith, setParentNode, toString, visit, visitChildren

Method Detail

getBindingNames

Set<String> getBindingNames()

Gets the names of the bindings that are, or can be, returned by this tuple expression when it is evaluated.

Returns:

A set of binding names.

getAssuredBindingNames

Set<String> getAssuredBindingNames()

Gets the names of the bindings that are guaranteed to be present in the results produced by this tuple expression.

Returns:

A set of binding names.

clone

TupleExpr clone()

Description copied from interface: QueryModelNode

Returns a (deep) clone of this query model node. This method recursively clones the entire node tree, starting from this nodes.

Specified by:

clone in interface QueryModelNode

Returns:

A deep clone of this query model node.