HHH-17606 Fix nested generic join path resolution

Author: mbellade

hibernate-core/src/main/java/org/hibernate/query/hql/internal/QualifiedJoinPathConsumer.java

@@ -178,15 +178,7 @@ private static SqmFrom<?, Object> createJoin(
 			boolean isTerminal,
 			boolean allowReuse,
 			SqmCreationState creationState) {
-		final SqmPathSource<?> referencedPathSource = lhs.getReferencedPathSource();
-		// We need to use referencedPathSource when it is not generic since the getResolvedModel() method would
-		// return the association attribute as a path source and for treated paths that might correspond to a
-		// different entity type (usually the first in alphabetical order) and not the correct treat target
-		final SqmPathSource<?> pathSource = referencedPathSource.isGeneric() ?
-				lhs.getResolvedModel() :
-				referencedPathSource;
-		//noinspection unchecked
-		final SqmPathSource<Object> subPathSource = (SqmPathSource<Object>) pathSource.getSubPathSource( name );
+		final SqmPathSource<?> subPathSource = lhs.getResolvedModel().getSubPathSource( name );
 		if ( allowReuse && !isTerminal ) {
 			for ( SqmJoin<?, ?> sqmJoin : lhs.getSqmJoins() ) {
 				if ( sqmJoin.getAlias() == null && sqmJoin.getReferencedPathSource() == subPathSource ) {

hibernate-core/src/main/java/org/hibernate/query/sqm/tree/domain/AbstractSqmPath.java

@@ -161,8 +161,7 @@ public SqmPathSource<T> getModel() {
 	public SqmPathSource<?> getResolvedModel() {
 		final DomainType<?> lhsType;
 		final SqmPathSource<T> pathSource = getReferencedPathSource();
-		if ( pathSource.isGeneric() && ( lhsType = getLhs().getReferencedPathSource()
-				.getSqmPathType() ) instanceof ManagedDomainType ) {
+		if ( pathSource.isGeneric() && ( lhsType = getLhs().getResolvedModel().getSqmPathType() ) instanceof ManagedDomainType ) {
 			final PersistentAttribute<?, ?> concreteAttribute = ( (ManagedDomainType<?>) lhsType ).findConcreteGenericAttribute(
 					pathSource.getPathName()
 			);