Class SingleSourceQuery
- java.lang.Object
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- org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode
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- org.eclipse.rdf4j.federated.algebra.SingleSourceQuery
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- All Implemented Interfaces:
Serializable,Cloneable,QueryRef,GraphPatternGroupable,QueryModelNode,TupleExpr,VariableScopeChange
public class SingleSourceQuery extends AbstractQueryModelNode implements TupleExpr, QueryRef
A query which has a single relevant source. These queries can be sent entirely to the endpoint as-is.- Author:
- Andreas Schwarte
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description SingleSourceQuery(TupleExpr parsedQuery, Endpoint source, QueryInfo queryInfo)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description SingleSourceQueryclone()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.QueryInfogetQueryInfo()Retrieve the attached query information of the tuple expressionStringgetQueryString()StringgetSignature()Default implementation ofQueryModelNode.getSignature()that prints the name of the node's class.EndpointgetSource()<X extends Exception>
voidvisit(QueryModelVisitor<X> visitor)Visits this node.<X extends Exception>
voidvisitChildren(QueryModelVisitor<X> visitor)Dummy implementation ofQueryModelNode.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, getTotalTimeNanosActual, isCardinalitySet, isGraphPatternGroup, isVariableScopeChange, nullEquals, replaceChildNode, 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, getTotalTimeNanosActual, replaceChildNode, replaceWith, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, toString
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Method Detail
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getSource
public Endpoint getSource()
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getQueryString
public String getQueryString()
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getQueryInfo
public QueryInfo getQueryInfo()
Description copied from interface:QueryRefRetrieve the attached query information of the tuple expression- Specified by:
getQueryInfoin interfaceQueryRef- Returns:
- the
QueryInfo
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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- Throws:
X extends Exception
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visitChildren
public <X extends Exception> void visitChildren(QueryModelVisitor<X> visitor) throws X extends Exception
Description copied from class:AbstractQueryModelNodeDummy implementation ofQueryModelNode.visitChildren(org.eclipse.rdf4j.query.algebra.QueryModelVisitor<X>)that does nothing. Subclasses should override this method when they have child nodes.- Specified by:
visitChildrenin interfaceQueryModelNode- Overrides:
visitChildrenin classAbstractQueryModelNode- Throws:
X extends Exception
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getSignature
public String getSignature()
Description copied from class:AbstractQueryModelNodeDefault implementation ofQueryModelNode.getSignature()that prints the name of the node's class.- Specified by:
getSignaturein interfaceQueryModelNode- Overrides:
getSignaturein classAbstractQueryModelNode- Returns:
- The node's signature, e.g. SLICE (offset=10, limit=10).
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getBindingNames
public Set<String> getBindingNames()
Description copied from interface:TupleExprGets the names of the bindings that are, or can be, returned by this tuple expression when it is evaluated.- Specified by:
getBindingNamesin interfaceTupleExpr- Returns:
- A set of binding names.
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getAssuredBindingNames
public Set<String> getAssuredBindingNames()
Description copied from interface:TupleExprGets the names of the bindings that are guaranteed to be present in the results produced by this tuple expression.- Specified by:
getAssuredBindingNamesin interfaceTupleExpr- Returns:
- A set of binding names.
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clone
public SingleSourceQuery 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.- Specified by:
clonein interfaceQueryModelNode- Specified by:
clonein interfaceTupleExpr- Overrides:
clonein classAbstractQueryModelNode- Returns:
- A deep clone of this query model node.
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