From 345e18c2ac34d1449cf7d084c7941f89ce2da897 Mon Sep 17 00:00:00 2001
From: Mark Paluch <mpaluch@vmware.com>
Date: Tue, 7 Sep 2021 16:07:24 +0200
Subject: [PATCH] Avoid `Iterator` allocations when calling `Sort.isSorted()`.

Closes #2445
---
 src/main/java/org/springframework/data/domain/Sort.java  | 9 +++++++++
 .../java/org/springframework/data/querydsl/QSort.java    | 5 +++++
 2 files changed, 14 insertions(+)

diff --git a/src/main/java/org/springframework/data/domain/Sort.java b/src/main/java/org/springframework/data/domain/Sort.java
index 93705ab68..644a14ed8 100644
--- a/src/main/java/org/springframework/data/domain/Sort.java
+++ b/src/main/java/org/springframework/data/domain/Sort.java
@@ -173,6 +173,11 @@ public class Sort implements Streamable<org.springframework.data.domain.Sort.Ord
 		return !isEmpty();
 	}
 
+	@Override
+	public boolean isEmpty() {
+		return orders.isEmpty();
+	}
+
 	public boolean isUnsorted() {
 		return !isSorted();
 	}
@@ -718,7 +723,11 @@ public class Sort implements Streamable<org.springframework.data.domain.Sort.Ord
 					.map(Order::by) //
 					.map(Collections::singleton) //
 					.orElseGet(Collections::emptySet).iterator();
+		}
 
+		@Override
+		public boolean isEmpty() {
+			return !recorded.getPropertyPath().isPresent();
 		}
 
 		/*
diff --git a/src/main/java/org/springframework/data/querydsl/QSort.java b/src/main/java/org/springframework/data/querydsl/QSort.java
index c9cbc402a..e64840436 100644
--- a/src/main/java/org/springframework/data/querydsl/QSort.java
+++ b/src/main/java/org/springframework/data/querydsl/QSort.java
@@ -104,6 +104,11 @@ public class QSort extends Sort implements Serializable {
 		return Order.by(targetElement.toString()).with(orderSpecifier.isAscending() ? Direction.ASC : Direction.DESC);
 	}
 
+	@Override
+	public boolean isEmpty() {
+		return orderSpecifiers.isEmpty();
+	}
+
 	/**
 	 * @return the orderSpecifier
 	 */