Interface StatementTupleExpr

All Superinterfaces:

Cloneable, FedXTupleExpr, QueryModelNode, QueryRef, Serializable, TupleExpr, VariableExpr

All Known Implementing Classes:

CheckStatementPattern, ExclusiveGroup, ExclusiveStatement, FedXStatementPattern, StatementSourcePattern

public interface StatementTupleExpr
extends FedXTupleExpr

Interface for any expression that can be evaluated

Author:

Andreas Schwarte

See Also:

• StatementSourcePattern
• ExclusiveStatement
• ExclusiveGroup

Method Summary

Modifier and Type	Method	Description
CloseableIteration<BindingSet>	evaluate(BindingSet bindings)	Evaluate this expression using the provided bindings
String	getId()
List<StatementSource>	getStatementSources()
boolean	hasFreeVarsFor(BindingSet binding)	returns true iff this statement has free variables in the presence of the specified binding set

Methods inherited from interface FedXTupleExpr

getFreeVarCount

Modifier and Type	Method	Description
default int	getFreeVarCount()

Methods inherited from interface QueryModelNode

equals, getCostEstimate, getDoubleMetricActual, getDoubleMetricsActual, getHasNextCallCountActual, getHasNextTimeNanosActual, getHasNextTrueCountActual, getJoinLeftBindingsConsumedActual, getJoinRightBindingsConsumedActual, getJoinRightIteratorsCreatedActual, getLongMetricActual, getLongMetricsActual, getNextCallCountActual, getNextTimeNanosActual, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getSourceRowsFilteredActual, getSourceRowsMatchedActual, getSourceRowsScannedActual, getStringMetricActual, getStringMetricsActual, getTotalTimeNanosActual, isRuntimeTelemetryEnabled, replaceChildNode, replaceWith, setCostEstimate, setDoubleMetricActual, setHasNextCallCountActual, setHasNextTimeNanosActual, setHasNextTrueCountActual, setJoinLeftBindingsConsumedActual, setJoinRightBindingsConsumedActual, setJoinRightIteratorsCreatedActual, setLongMetricActual, setNextCallCountActual, setNextTimeNanosActual, setParentNode, setResultSizeActual, setResultSizeEstimate, setRuntimeTelemetryEnabled, setSourceRowsFilteredActual, setSourceRowsMatchedActual, setSourceRowsScannedActual, setStringMetricActual, setTotalTimeNanosActual, toString, visit, visitChildren

Modifier and Type	Method	Description
boolean	equals(Object o)	Returns true if this query model node and its children are recursively equal to o and its children.
default double	getCostEstimate()
default double	getDoubleMetricActual(String metricName)
default Map<String,Double>	getDoubleMetricsActual()
default long	getHasNextCallCountActual()
default long	getHasNextTimeNanosActual()
default long	getHasNextTrueCountActual()
default long	getJoinLeftBindingsConsumedActual()
default long	getJoinRightBindingsConsumedActual()
default long	getJoinRightIteratorsCreatedActual()
default long	getLongMetricActual(String metricName)
default Map<String,Long>	getLongMetricsActual()
default long	getNextCallCountActual()
default long	getNextTimeNanosActual()
QueryModelNode	getParentNode()	Gets the node's parent.
default long	getResultSizeActual()
default double	getResultSizeEstimate()	Returns the number of tuples that this QueryNode predicts will be outputted.
String	getSignature()	Returns the signature of this query model node.
default long	getSourceRowsFilteredActual()
default long	getSourceRowsMatchedActual()
default long	getSourceRowsScannedActual()
default String	getStringMetricActual(String metricName)
default Map<String,String>	getStringMetricsActual()
default long	getTotalTimeNanosActual()
default boolean	isRuntimeTelemetryEnabled()
void	replaceChildNode(QueryModelNode current, QueryModelNode replacement)	Replaces one of the child nodes with a new node.
void	replaceWith(QueryModelNode replacement)	Substitutes this node with a new node in the query model tree.
default void	setCostEstimate(double costEstimate)
default void	setDoubleMetricActual(String metricName, double metricValue)
default void	setHasNextCallCountActual(long hasNextCallCountActual)
default void	setHasNextTimeNanosActual(long hasNextTimeNanosActual)
default void	setHasNextTrueCountActual(long hasNextTrueCountActual)
default void	setJoinLeftBindingsConsumedActual(long joinLeftBindingsConsumedActual)
default void	setJoinRightBindingsConsumedActual(long joinRightBindingsConsumedActual)
default void	setJoinRightIteratorsCreatedActual(long joinRightIteratorsCreatedActual)
default void	setLongMetricActual(String metricName, long metricValue)
default void	setNextCallCountActual(long nextCallCountActual)
default void	setNextTimeNanosActual(long nextTimeNanosActual)
void	setParentNode(QueryModelNode parent)	Sets the node's parent.
default void	setResultSizeActual(long resultSizeActual)
default void	setResultSizeEstimate(double rows)
default void	setRuntimeTelemetryEnabled(boolean runtimeTelemetryEnabled)
default void	setSourceRowsFilteredActual(long sourceRowsFilteredActual)
default void	setSourceRowsMatchedActual(long sourceRowsMatchedActual)
default void	setSourceRowsScannedActual(long sourceRowsScannedActual)
default void	setStringMetricActual(String metricName, String metricValue)
default void	setTotalTimeNanosActual(long totalTime)
String	toString()	Returns an indented print of the node tree, starting from this 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 interface QueryRef

getQueryInfo

Modifier and Type	Method	Description
QueryInfo	getQueryInfo()	Retrieve the attached query information of the tuple expression

Methods inherited from interface TupleExpr

clone, getAssuredBindingNames, getBindingNames, getOrder, getSupportedOrders, setOrder

Modifier and Type	Method	Description
TupleExpr	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.
default Var	getOrder()
default Set<Var>	getSupportedOrders(AvailableStatementOrder tripleSource)
default void	setOrder(Var var)

Methods inherited from interface VariableExpr

getFreeVars

Modifier and Type	Method	Description
List<String>	getFreeVars()

Method Details

getId

String getId()

Returns:

the id of this expr

getStatementSources

List<StatementSource> getStatementSources()

Returns:

a list of sources that are relevant for evaluation of this expression

hasFreeVarsFor

boolean hasFreeVarsFor(BindingSet binding)

returns true iff this statement has free variables in the presence of the specified binding set

Parameters:

binding -

Returns:

whether the statement has free vars

evaluate

CloseableIteration<BindingSet> evaluate(BindingSet bindings)
                                 throws QueryEvaluationException

Evaluate this expression using the provided bindings

Parameters:

bindings -

Returns:

the result iteration

Throws:

QueryEvaluationException