Class TripleComponent

java.lang.Object

org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode

org.eclipse.rdf4j.query.algebra.TripleComponent

All Implemented Interfaces:

Serializable, Cloneable, QueryModelNode, ValueExpr, VariableScopeChange

public class TripleComponent
extends AbstractQueryModelNode
implements ValueExpr

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	TripleComponent.Role

Constructor Summary

Constructors

Constructor	Description
TripleComponent(Var tripleRefVar, TripleComponent.Role role)

Method Summary

Modifier and Type	Method	Description
TripleComponent	clone()	Returns a (deep) clone of this query model node.
boolean	equals(Object other)	Returns true if this query model node and its children are recursively equal to o and its children.
TripleComponent.Role	getRole()
Var	getTripleRefVar()
int	hashCode()
void	replaceChildNode(QueryModelNode current, QueryModelNode replacement)	Replaces one of the child nodes with a new node.
<X extends Exception> void	visit(QueryModelVisitor<X> visitor)	Visits this node.
<X extends Exception> void	visitChildren(QueryModelVisitor<X> visitor)	Visits the children of this node.

Methods inherited from class AbstractQueryModelNode

clearQueryModelMetadata, getCardinality, getCostEstimate, getDoubleMetricActual, getDoubleMetricPlanned, getDoubleMetricsActual, getDoubleMetricsPlanned, getHasNextCallCountActual, getHasNextTimeNanosActual, getHasNextTrueCountActual, getJoinLeftBindingsConsumedActual, getJoinRightBindingsConsumedActual, getJoinRightIteratorsCreatedActual, getLongMetricActual, getLongMetricPlanned, getLongMetricsActual, getLongMetricsPlanned, getNextCallCountActual, getNextTimeNanosActual, getParentNode, getQueryModelMetadata, getResultSizeActual, getResultSizeEstimate, getSignature, getSourceRowsFilteredActual, getSourceRowsMatchedActual, getSourceRowsScannedActual, getStringMetricActual, getStringMetricPlanned, getStringMetricsActual, getStringMetricsPlanned, getTotalTimeNanosActual, isCardinalitySet, isRuntimeTelemetryEnabled, isVariableScopeChange, nullEquals, removeQueryModelMetadata, replaceNodeInList, replaceWith, resetCardinality, setCardinality, setCostEstimate, setDoubleMetricActual, setDoubleMetricPlanned, setHasNextCallCountActual, setHasNextTimeNanosActual, setHasNextTrueCountActual, setJoinLeftBindingsConsumedActual, setJoinRightBindingsConsumedActual, setJoinRightIteratorsCreatedActual, setLongMetricActual, setLongMetricPlanned, setNextCallCountActual, setNextTimeNanosActual, setParentNode, setQueryModelMetadata, setResultSizeActual, setResultSizeEstimate, setRuntimeTelemetryEnabled, setSourceRowsFilteredActual, setSourceRowsMatchedActual, setSourceRowsScannedActual, setStringMetricActual, setStringMetricPlanned, setTotalTimeNanosActual, setVariableScopeChange, shouldCacheCardinality, toString

Modifier and Type	Method	Description
void	clearQueryModelMetadata()	Clears all transient optimizer metadata attached to this query model node.
double	getCardinality()
double	getCostEstimate()
double	getDoubleMetricActual(String metricName)
double	getDoubleMetricPlanned(String metricName)
Map<String,Double>	getDoubleMetricsActual()
Map<String,Double>	getDoubleMetricsPlanned()
long	getHasNextCallCountActual()
long	getHasNextTimeNanosActual()
long	getHasNextTrueCountActual()
long	getJoinLeftBindingsConsumedActual()
long	getJoinRightBindingsConsumedActual()
long	getJoinRightIteratorsCreatedActual()
long	getLongMetricActual(String metricName)
long	getLongMetricPlanned(String metricName)
Map<String,Long>	getLongMetricsActual()
Map<String,Long>	getLongMetricsPlanned()
long	getNextCallCountActual()
long	getNextTimeNanosActual()
QueryModelNode	getParentNode()	Gets the node's parent.
Object	getQueryModelMetadata(Object key)	Returns transient optimizer metadata attached to this query model node for the supplied key.
long	getResultSizeActual()
double	getResultSizeEstimate()	Returns the number of tuples that this QueryNode predicts will be outputted.
String	getSignature()	Default implementation of QueryModelNode.getSignature() that prints the name of the node's class.
long	getSourceRowsFilteredActual()
long	getSourceRowsMatchedActual()
long	getSourceRowsScannedActual()
String	getStringMetricActual(String metricName)
String	getStringMetricPlanned(String metricName)
Map<String,String>	getStringMetricsActual()
Map<String,String>	getStringMetricsPlanned()
long	getTotalTimeNanosActual()
boolean	isCardinalitySet()
boolean	isRuntimeTelemetryEnabled()
boolean	isVariableScopeChange()	indicates if the node represents a variable scope change.
protected boolean	nullEquals(Object o1, Object o2)
Object	removeQueryModelMetadata(Object key)	Removes transient optimizer metadata from this query model node.
protected <T extends QueryModelNode> boolean	replaceNodeInList(List<T> list, QueryModelNode current, QueryModelNode replacement)
void	replaceWith(QueryModelNode replacement)	Default implementation of QueryModelNode.replaceWith(QueryModelNode) that throws an IllegalArgumentException indicating that current is not a child node of this node.
void	resetCardinality()
void	setCardinality(double cardinality)
void	setCostEstimate(double costEstimate)
void	setDoubleMetricActual(String metricName, double metricValue)
void	setDoubleMetricPlanned(String metricName, double metricValue)
void	setHasNextCallCountActual(long hasNextCallCountActual)
void	setHasNextTimeNanosActual(long hasNextTimeNanosActual)
void	setHasNextTrueCountActual(long hasNextTrueCountActual)
void	setJoinLeftBindingsConsumedActual(long joinLeftBindingsConsumedActual)
void	setJoinRightBindingsConsumedActual(long joinRightBindingsConsumedActual)
void	setJoinRightIteratorsCreatedActual(long joinRightIteratorsCreatedActual)
void	setLongMetricActual(String metricName, long metricValue)
void	setLongMetricPlanned(String metricName, long metricValue)
void	setNextCallCountActual(long nextCallCountActual)
void	setNextTimeNanosActual(long nextTimeNanosActual)
void	setParentNode(QueryModelNode parent)	Sets the node's parent.
void	setQueryModelMetadata(Object key, Object value)	Attaches transient optimizer metadata to this query model node.
void	setResultSizeActual(long resultSizeActual)
void	setResultSizeEstimate(double resultSizeEstimate)
void	setRuntimeTelemetryEnabled(boolean runtimeTelemetryEnabled)
void	setSourceRowsFilteredActual(long sourceRowsFilteredActual)
void	setSourceRowsMatchedActual(long sourceRowsMatchedActual)
void	setSourceRowsScannedActual(long sourceRowsScannedActual)
void	setStringMetricActual(String metricName, String metricValue)
void	setStringMetricPlanned(String metricName, String metricValue)
void	setTotalTimeNanosActual(long totalTimeNanosActual)
void	setVariableScopeChange(boolean isVariableScopeChange)	Set the value of VariableScopeChange.isVariableScopeChange() to true or false.
protected boolean	shouldCacheCardinality()
String	toString()	Returns an indented print of the node tree, starting from this node.

Methods inherited from class Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

TripleComponent

public TripleComponent(Var tripleRefVar,
 TripleComponent.Role role)

Method Details

getRole

public TripleComponent.Role getRole()

getTripleRefVar

public Var getTripleRefVar()

visitChildren

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

Description copied from interface: QueryModelNode

Visits the children of this node. The node calls QueryModelNode.visit(QueryModelVisitor) on all of its child nodes.

Specified by:

visitChildren in interface QueryModelNode

Throws:

X

equals

public boolean equals(Object other)

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 interface QueryModelNode

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

clone

public TripleComponent 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 ValueExpr

Overrides:

clone in class AbstractQueryModelNode

Returns:

A deep clone of this query model node.

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

replaceChildNode

public void replaceChildNode(QueryModelNode current,
 QueryModelNode replacement)

Description copied from interface: QueryModelNode

Replaces one of the child nodes with a new node.

Specified by:

replaceChildNode in interface QueryModelNode

Parameters:

current - The current child node.

replacement - The new child node.