Package org.eclipse.rdf4j.query.algebra
Class Join
java.lang.Object
org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode
org.eclipse.rdf4j.query.algebra.BinaryTupleOperator
org.eclipse.rdf4j.query.algebra.Join
- All Implemented Interfaces:
Serializable
,Cloneable
,QueryModelNode
,TupleExpr
,VariableScopeChange
A natural join between two tuple expressions.
- See Also:
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Field Summary
Fields inherited from class org.eclipse.rdf4j.query.algebra.BinaryTupleOperator
leftArg, rightArg
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionclone()
Returns a (deep) clone of this query model node.boolean
Returns true if this query model node and its children are recursively equal to o and its children.Gets the names of the bindings that are guaranteed to be present in the results produced by this tuple expression.Gets the names of the bindings that are, or can be, returned by this tuple expression when it is evaluated.int
hashCode()
boolean
void
setCacheable
(boolean cacheable) void
setMergeJoin
(boolean mergeJoin) <X extends Exception>
voidvisit
(QueryModelVisitor<X> visitor) Visits this node.Methods inherited from class org.eclipse.rdf4j.query.algebra.BinaryTupleOperator
getAlgorithmName, getLeftArg, getOrder, getRightArg, getSupportedOrders, replaceChildNode, setAlgorithm, setAlgorithm, setLeftArg, setOrder, setRightArg, visitChildren
Methods inherited from class org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode
getCardinality, getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getTotalTimeNanosActual, isCardinalitySet, isVariableScopeChange, nullEquals, replaceNodeInList, replaceWith, resetCardinality, setCardinality, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, setVariableScopeChange, shouldCacheCardinality, toString
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
Methods inherited from interface org.eclipse.rdf4j.query.algebra.QueryModelNode
getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getTotalTimeNanosActual, replaceWith, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, toString
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Constructor Details
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Join
public Join() -
Join
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Method Details
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getBindingNames
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getAssuredBindingNames
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visit
Description copied from interface:QueryModelNode
Visits this node. The node reports itself to the visitor with the proper runtime type.- Throws:
X
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equals
Description copied from interface:QueryModelNode
Returns true if this query model node and its children are recursively equal to o and its children.- Specified by:
equals
in interfaceQueryModelNode
- Overrides:
equals
in classBinaryTupleOperator
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hashCode
public int hashCode()- Overrides:
hashCode
in classBinaryTupleOperator
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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 interfaceQueryModelNode
- Specified by:
clone
in interfaceTupleExpr
- Overrides:
clone
in classBinaryTupleOperator
- Returns:
- A deep clone of this query model node.
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isMergeJoin
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setMergeJoin
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setCacheable
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