Class NJoin
- java.lang.Object
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- org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode
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- org.eclipse.rdf4j.federated.algebra.NTuple
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- org.eclipse.rdf4j.federated.algebra.NJoin
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- All Implemented Interfaces:
Serializable,Cloneable,QueryRef,GraphPatternGroupable,QueryModelNode,TupleExpr,VariableScopeChange
public class NJoin extends NTuple
A tuple expression that represents an nary-Join.- Author:
- Andreas Schwarte
- See Also:
- Serialized Form
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description NJoinclone()Returns a (deep) clone of this query model node.Set<String>getJoinVariables(int joinIndex)Returns the commons variables of the join with the given index.<X extends Exception>
voidvisit(QueryModelVisitor<X> visitor)Visits this node.-
Methods inherited from class org.eclipse.rdf4j.federated.algebra.NTuple
getArg, getArgs, getAssuredBindingNames, getBindingNames, getNumberOfArguments, getQueryInfo, replaceChildNode, visitChildren
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Methods inherited from class org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode
getCardinality, getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getTotalTimeNanosActual, isCardinalitySet, isGraphPatternGroup, isVariableScopeChange, nullEquals, replaceNodeInList, replaceWith, resetCardinality, setCardinality, setCostEstimate, setGraphPatternGroup, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, setVariableScopeChange, shouldCacheCardinality, toString
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Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.eclipse.rdf4j.query.algebra.QueryModelNode
equals, getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getTotalTimeNanosActual, replaceWith, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, toString
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Method Detail
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visit
public <X extends Exception> void visit(QueryModelVisitor<X> visitor) throws X extends Exception
Description copied from interface:QueryModelNodeVisits this node. The node reports itself to the visitor with the proper runtime type.- Specified by:
visitin interfaceQueryModelNode- Overrides:
visitin classNTuple- Throws:
X extends Exception
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clone
public NJoin clone()
Description copied from interface:QueryModelNodeReturns a (deep) clone of this query model node. This method recursively clones the entire node tree, starting from this nodes.
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