Package org.eclipse.rdf4j.query.algebra
Class FunctionCall
- java.lang.Object
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- org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode
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- org.eclipse.rdf4j.query.algebra.FunctionCall
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- All Implemented Interfaces:
Serializable,Cloneable,GraphPatternGroupable,QueryModelNode,ValueExpr,VariableScopeChange
public class FunctionCall extends AbstractQueryModelNode implements ValueExpr
A call to an (external) function that operates on zero or more arguments.- Author:
- Arjohn Kampman
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description FunctionCall()FunctionCall(String uri, Iterable<ValueExpr> args)FunctionCall(String uri, ValueExpr... args)Creates a new unary value operator.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description voidaddArg(ValueExpr arg)voidaddArgs(Iterable<ValueExpr> args)voidaddArgs(ValueExpr... args)FunctionCallclone()Returns a (deep) clone of this query model node.booleanequals(Object other)Returns true if this query model node and its children are recursively equal to o and its children.List<ValueExpr>getArgs()StringgetSignature()Default implementation ofQueryModelNode.getSignature()that prints the name of the node's class.StringgetURI()inthashCode()voidreplaceChildNode(QueryModelNode current, QueryModelNode replacement)Default implementation ofQueryModelNode.replaceChildNode(QueryModelNode, QueryModelNode)that throws anIllegalArgumentExceptionindicating that current is not a child node of this node.voidsetArgs(Iterable<ValueExpr> args)voidsetURI(String uri)<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, replaceNodeInList, replaceWith, resetCardinality, setCardinality, setCostEstimate, setGraphPatternGroup, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, setVariableScopeChange, shouldCacheCardinality, toString
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Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.eclipse.rdf4j.query.algebra.QueryModelNode
getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getTotalTimeNanosActual, replaceWith, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, toString
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Method Detail
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getURI
public String getURI()
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setURI
public void setURI(String uri)
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addArgs
public void addArgs(ValueExpr... args)
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addArg
public void addArg(ValueExpr arg)
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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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replaceChildNode
public void replaceChildNode(QueryModelNode current, QueryModelNode replacement)
Description copied from class:AbstractQueryModelNodeDefault implementation ofQueryModelNode.replaceChildNode(QueryModelNode, QueryModelNode)that throws anIllegalArgumentExceptionindicating that current is not a child node of this node.- Specified by:
replaceChildNodein interfaceQueryModelNode- Overrides:
replaceChildNodein classAbstractQueryModelNode- Parameters:
current- The current child node.replacement- The new child node.
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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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equals
public boolean equals(Object other)
Description copied from interface:QueryModelNodeReturns true if this query model node and its children are recursively equal to o and its children.- Specified by:
equalsin interfaceQueryModelNode- Overrides:
equalsin classObject
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clone
public FunctionCall 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 interfaceValueExpr- Overrides:
clonein classAbstractQueryModelNode- Returns:
- A deep clone of this query model node.
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