Package org.eclipse.rdf4j.federated.algebra

Class FedXService

java.lang.Object

org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode

org.eclipse.rdf4j.federated.algebra.FedXService

All Implemented Interfaces:

Serializable, Cloneable, BoundJoinTupleExpr, GraphPatternGroupable, QueryModelNode, TupleExpr, VariableScopeChange

public class FedXService
extends AbstractQueryModelNode
implements TupleExpr, BoundJoinTupleExpr

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected Service	expr
protected int	nTriples
protected QueryInfo	queryInfo
protected boolean	simple

Constructor Summary

Constructors

Constructor	Description
FedXService(Service expr, QueryInfo queryInfo)

Method Summary

Modifier and Type	Method	Description
FedXService	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.
int	getFreeVarCount()
Collection<String>	getFreeVars()
int	getNumberOfTriplePatterns()
QueryInfo	getQueryInfo()
Service	getService()
boolean	isSimple()
<X extends Exception> void	visit(QueryModelVisitor<X> visitor)	Visits this node.
<X extends Exception> void	visitChildren(QueryModelVisitor<X> visitor)	Dummy implementation of QueryModelNode.visitChildren(org.eclipse.rdf4j.query.algebra.QueryModelVisitor<X>) that does nothing.

Methods inherited from class org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode

getCardinality, getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getTotalTimeNanosActual, isCardinalitySet, isGraphPatternGroup, isVariableScopeChange, nullEquals, replaceChildNode, replaceNodeInList, replaceWith, resetCardinality, setCardinality, setCostEstimate, setGraphPatternGroup, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, setVariableScopeChange, shouldCacheCardinality, toString

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

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

Field Details

expr

protected Service expr

queryInfo

protected transient QueryInfo queryInfo

simple

protected boolean simple

nTriples

protected int nTriples

Constructor Details

FedXService

public FedXService(Service expr,
 QueryInfo queryInfo)

Method Details

getService

public Service getService()

getQueryInfo

public QueryInfo getQueryInfo()

getNumberOfTriplePatterns

public int getNumberOfTriplePatterns()

isSimple

public boolean isSimple()

getFreeVars

public Collection<String> getFreeVars()

getFreeVarCount

public int getFreeVarCount()

visit

public <X extends Exception> void visit(QueryModelVisitor<X> visitor)
                                 throws X

Description copied from interface: QueryModelNode

Visits this node. The node reports itself to the visitor with the proper runtime type.

Specified by:

visit in interface QueryModelNode

Throws:

X extends Exception

visitChildren

public <X extends Exception> void visitChildren(QueryModelVisitor<X> visitor)
                                         throws X

Description copied from class: AbstractQueryModelNode

Dummy implementation of QueryModelNode.visitChildren(org.eclipse.rdf4j.query.algebra.QueryModelVisitor<X>) that does nothing. Subclasses should override this method when they have child nodes.

Specified by:

visitChildren in interface QueryModelNode

Overrides:

visitChildren in class AbstractQueryModelNode

Throws:

X extends Exception

clone

public FedXService 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

Specified by:

clone in interface TupleExpr

Overrides:

clone in class AbstractQueryModelNode

Returns:

A deep clone of this query model node.

getAssuredBindingNames

public Set<String> getAssuredBindingNames()

Description copied from interface: TupleExpr

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

Specified by:

getAssuredBindingNames in interface TupleExpr

Returns:

A set of binding names.

getBindingNames

public Set<String> getBindingNames()

Description copied from interface: TupleExpr

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

Specified by:

getBindingNames in interface TupleExpr

Returns:

A set of binding names.