From e65ef1354c6eb015f9cf361c623b2a74a253d853 Mon Sep 17 00:00:00 2001
From: Sanne Grinovero <sanne@hibernate.org>
Date: Wed, 26 Feb 2020 09:41:30 +0000
Subject: [PATCH] HHH-13876 Delete the immutable SingletonStack implementation
 as its no longer used

---
 .../util/collections/SingletonStack.java      | 60 -------------------
 1 file changed, 60 deletions(-)
 delete mode 100644 hibernate-core/src/main/java/org/hibernate/internal/util/collections/SingletonStack.java

diff --git a/hibernate-core/src/main/java/org/hibernate/internal/util/collections/SingletonStack.java b/hibernate-core/src/main/java/org/hibernate/internal/util/collections/SingletonStack.java
deleted file mode 100644
index f1c0a00b04..0000000000
--- a/hibernate-core/src/main/java/org/hibernate/internal/util/collections/SingletonStack.java
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Hibernate, Relational Persistence for Idiomatic Java
- *
- * License: GNU Lesser General Public License (LGPL), version 2.1 or later
- * See the lgpl.txt file in the root directory or http://www.gnu.org/licenses/lgpl-2.1.html
- */
-package org.hibernate.internal.util.collections;
-
-import java.util.function.Consumer;
-import java.util.function.Function;
-
-/**
- * @author Steve Ebersole
- */
-public class SingletonStack<T> implements Stack<T> {
-	private final T instance;
-
-	public SingletonStack(T instance) {
-		this.instance = instance;
-	}
-
-	@Override
-	public void push(T newCurrent) {
-		throw new UnsupportedOperationException( "Cannot push to a singleton Stack" );
-	}
-
-	@Override
-	public T pop() {
-		throw new UnsupportedOperationException( "Cannot pop from a singleton Stack" );
-	}
-
-	@Override
-	public T getCurrent() {
-		return instance;
-	}
-
-	@Override
-	public int depth() {
-		return 1;
-	}
-
-	@Override
-	public boolean isEmpty() {
-		return false;
-	}
-
-	@Override
-	public void clear() {
-	}
-
-	@Override
-	public void visitCurrentFirst(Consumer<T> action) {
-		action.accept( instance );
-	}
-
-	@Override
-	public <X> X findCurrentFirst(Function<T, X> action) {
-		return action.apply( instance );
-	}
-}