gudusoft.gsqlparser.ir.semantic.diff

Class SemanticIRProjector

Object

gudusoft.gsqlparser.ir.semantic.diff.SemanticIRProjector

public final class SemanticIRProjector
extends Object

Project a SemanticProgram into a CanonicalLineageModel.

SELECT lineage: for each outer-statement output, BFS the program-level lineage edges (target → sources) until we hit TABLE_COLUMN terminals. Each terminal becomes one canonical SELECT edge.

Row influence: for each statement reachable from the outer (via CTE/SUBQUERY relations), every column ref in filterColumnRefs and joinColumnRefs is resolved to a base table by walking the lineage chain that starts at the relation it references.

Method Summary

Modifier and Type	Method and Description
static ProjectorResult	project(SemanticProgram program)

Methods inherited from class Object

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

Method Detail

project

public static ProjectorResult project(SemanticProgram program)