Package org.eclipse.rdf4j.federated.algebra

Interface FedXTupleExpr

All Superinterfaces:

Cloneable, QueryModelNode, QueryRef, Serializable, TupleExpr, VariableExpr

All Known Subinterfaces:

ExclusiveTupleExpr, ExclusiveTupleExprRenderer, StatementTupleExpr

All Known Implementing Classes:

CheckStatementPattern, ExclusiveArbitraryLengthPath, ExclusiveGroup, ExclusiveStatement, FedXArbitraryLengthPath, FedXStatementPattern, PassThroughTupleExpr, StatementSourcePattern

public interface FedXTupleExpr
extends TupleExpr, VariableExpr, QueryRef

Interface marking known FedX algebra nodes.

Author:

Andreas Schwarte

See Also:

• StatementTupleExpr
• ExclusiveTupleExpr

Method Summary

Modifier and Type	Method	Description
default int	getFreeVarCount()

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

equals, getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getTotalTimeNanosActual, replaceChildNode, replaceWith, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, toString, visit, visitChildren

Methods inherited from interface org.eclipse.rdf4j.federated.algebra.QueryRef

getQueryInfo

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

clone, getAssuredBindingNames, getBindingNames, getOrder, getSupportedOrders, setOrder

Methods inherited from interface org.eclipse.rdf4j.federated.algebra.VariableExpr

getFreeVars

Method Details

getFreeVarCount

default int getFreeVarCount()

Returns:

the number of free (i.e. unbound) variables in this expression