Class ApplyPathsFixedPointTransform

java.lang.Object

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

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

public final class ApplyPathsFixedPointTransform
extends BaseTransform

Apply path-related transforms repeatedly until the WHERE block reaches a textual fixed point. The fingerprint is computed by rendering the WHERE as a subselect so non-WHERE text does not affect convergence. Guarded to a small iteration budget to avoid accidental oscillations.

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 String	fingerprintWhere(IrBGP where, TupleExprIRRenderer r)	Build a stable text fingerprint of a WHERE block for fixed-point detection.

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)

fingerprintWhere

public static String fingerprintWhere(IrBGP where,
 TupleExprIRRenderer r)

Build a stable text fingerprint of a WHERE block for fixed-point detection.