Class IrTripleLike

java.lang.Object

org.eclipse.rdf4j.queryrender.sparql.ir.IrNode

org.eclipse.rdf4j.queryrender.sparql.ir.IrTripleLike

Direct Known Subclasses:

IrPathTriple, IrStatementPattern

public abstract class IrTripleLike
extends IrNode

Common abstraction for triple-like IR nodes that have subject/object variables and a textual predicate/path representation suitable for alternation merging.

Field Summary

Fields inherited from class IrNode

_className

Constructor Summary

Constructors

Constructor	Description
IrTripleLike(Var subject, Var object, boolean newScope)
IrTripleLike(Var subject, IrNode subjectOverride, Var object, IrNode objectOverride, boolean newScope)

Method Summary

Modifier and Type	Method	Description
Var	getObject()
IrNode	getObjectOverride()
abstract String	getPredicateOrPathText(TupleExprIRRenderer r)	Render the predicate or path as compact textual IR suitable for inclusion in a property path.
Var	getSubject()
IrNode	getSubjectOverride()
Set<Var>	getVars()	Collect variables referenced by this node and all of its children (if any).
void	setObjectOverride(IrNode objectOverride)
void	setSubjectOverride(IrNode subjectOverride)

Methods inherited from class IrNode

isNewScope, print, setNewScope, transformChildren

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

IrTripleLike

public IrTripleLike(Var subject,
 Var object,
 boolean newScope)

IrTripleLike

public IrTripleLike(Var subject,
 IrNode subjectOverride,
 Var object,
 IrNode objectOverride,
 boolean newScope)

Method Details

getSubject

public Var getSubject()

getObject

public Var getObject()

getSubjectOverride

public IrNode getSubjectOverride()

setSubjectOverride

public void setSubjectOverride(IrNode subjectOverride)

getObjectOverride

public IrNode getObjectOverride()

setObjectOverride

public void setObjectOverride(IrNode objectOverride)

getPredicateOrPathText

public abstract String getPredicateOrPathText(TupleExprIRRenderer r)

Render the predicate or path as compact textual IR suitable for inclusion in a property path. For simple statement patterns this typically returns a compact IRI (possibly prefixed); for path triples it returns the already-rendered path text. Implementations should return null when no safe textual representation exists (e.g., non-constant predicate in a statement pattern).

getVars

public Set<Var> getVars()

Description copied from class: IrNode

Collect variables referenced by this node and all of its children (if any). Default implementation returns an empty set; container and triple-like nodes override to include their own Vars and recurse into child nodes.

Overrides:

getVars in class IrNode