Class IrPathTriple

java.lang.Object

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

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

org.eclipse.rdf4j.queryrender.sparql.ir.IrPathTriple

public class IrPathTriple
extends IrTripleLike

Textual IR node for a property path triple: subject, path expression, object. Path expression is stored as pre-rendered text to allow local string-level rewrites (alternation/sequence grouping, quantifiers) without needing a full AST here. Transforms are responsible for ensuring parentheses are added only when required for correctness; printing strips redundant outermost parentheses for stable output.

Field Summary

Fields inherited from class IrNode

_className

Constructor Summary

Constructors

Constructor	Description
IrPathTriple(Var subject, String pathText, Var object, boolean newScope, Set<Var> pathVars)
IrPathTriple(Var subject, IrNode subjectOverride, String pathText, Var object, IrNode objectOverride, Set<Var> pathVars, boolean newScope)

Method Summary

Modifier and Type	Method	Description
static Set<Var>	fromStatementPatterns(IrStatementPattern... sps)	Create a set of pathVars from one or more IrStatementPattern by collecting any parser bridge variables (subject/object with names starting with _anon_path_ or _anon_path_inverse_) and anonymous predicate vars.
String	getPathText()
Set<Var>	getPathVars()	Returns the set of variables that contributed to this path during fusing (e.g., anon _anon_path_* bridges).
String	getPredicateOrPathText(TupleExprIRRenderer r)	Render the predicate or path as compact textual IR suitable for inclusion in a property path.
Set<Var>	getVars()	Collect variables referenced by this node and all of its children (if any).
static Set<Var>	mergePathVars(IrPathTriple... pts)	Merge pathVars from 2+ IrPathTriples into a new unmodifiable set.
void	print(IrPrinter p)	Default no-op printing; concrete nodes override.
void	setPathVars(Set<Var> vars)	Assign the set of variables that contributed to this path during fusing.
String	toString()

Methods inherited from class IrTripleLike

getObject, getObjectOverride, getSubject, getSubjectOverride, setObjectOverride, setSubjectOverride

Methods inherited from class IrNode

isNewScope, setNewScope, transformChildren

Methods inherited from class Object

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

Constructor Details

IrPathTriple

public IrPathTriple(Var subject,
 String pathText,
 Var object,
 boolean newScope,
 Set<Var> pathVars)

IrPathTriple

public IrPathTriple(Var subject,
 IrNode subjectOverride,
 String pathText,
 Var object,
 IrNode objectOverride,
 Set<Var> pathVars,
 boolean newScope)

Method Details

getPathText

public String getPathText()

getPredicateOrPathText

public String getPredicateOrPathText(TupleExprIRRenderer r)

Description copied from class: IrTripleLike

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).

Specified by:

getPredicateOrPathText in class IrTripleLike

getPathVars

public Set<Var> getPathVars()

Returns the set of variables that contributed to this path during fusing (e.g., anon _anon_path_* bridges).

setPathVars

public void setPathVars(Set<Var> vars)

Assign the set of variables that contributed to this path during fusing.

mergePathVars

public static Set<Var> mergePathVars(IrPathTriple... pts)

Merge pathVars from 2+ IrPathTriples into a new unmodifiable set.

fromStatementPatterns

public static Set<Var> fromStatementPatterns(IrStatementPattern... sps)

Create a set of pathVars from one or more IrStatementPattern by collecting any parser bridge variables (subject/object with names starting with _anon_path_ or _anon_path_inverse_) and anonymous predicate vars.

print

public void print(IrPrinter p)

Description copied from class: IrNode

Default no-op printing; concrete nodes override.

Specified by:

print in class IrNode

toString

public String toString()

Overrides:

toString in class Object

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 IrTripleLike