Class ApplyPathsTransform

java.lang.Object

org.eclipse.rdf4j.queryrender.sparql.ir.util.transform.BaseTransform

org.eclipse.rdf4j.queryrender.sparql.ir.util.transform.ApplyPathsTransform

public final class ApplyPathsTransform
extends BaseTransform

Fuse simple chains of constant-predicate statement patterns connected by parser-inserted bridge variables into property path triples, and handle a few local path+filter shapes (e.g., basic NPS formation) where safe. Scope and safety: - Only composes across _anon_path_* variables so user-visible bindings remain intact. - Accepts constant-predicate SPs and preserves GRAPH/OPTIONAL/UNION structure via recursion. - Leaves complex cases to later passes (fixed point), keeping this pass easy to reason about.

Field Summary

Fields inherited from class BaseTransform

ANON_PATH_INVERSE_PREFIX, ANON_PATH_PREFIX

Method Summary

Modifier and Type	Method	Description
static IrBGP	apply(IrBGP bgp, TupleExprIRRenderer r)
static IrBGP	fuseForwardThenInverseTail(IrBGP bgp, TupleExprIRRenderer r)

Methods inherited from class BaseTransform

bgpWithLines, branchHasAnonPathBridge, copyAllExcept, fuseAdjacentPtThenPt, fuseAdjacentSpThenPt, fuseAltInverseTailBGP, fusePtSpPtSequence, invertNegatedPropertySet, iri, isAnonPathInverseVar, isAnonPathVar, isConstantIriPredicate, joinPathWithLaterSp, mergeNpsMembers, normalizeCompactNps, orientBareNpsForNext, rewriteContainers, sameVar, sameVarOrValue, unionBranchesAllHaveAnonPathBridge, unionBranchesShareAnonPathVarWithAllowedRoleMapping, unionBranchesShareCommonAnonPathVarName, unionIsExplicitAndAllBranchesScoped, varOrValue

Methods inherited from class Object

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

Method Details

apply

public static IrBGP apply(IrBGP bgp,
 TupleExprIRRenderer r)

fuseForwardThenInverseTail

public static IrBGP fuseForwardThenInverseTail(IrBGP bgp,
 TupleExprIRRenderer r)