From dcc5b44520a27884a68e456a6cd5bd31c1c63d98 Mon Sep 17 00:00:00 2001
From: Andrea Cavalli <andrea@cavallium.it>
Date: Tue, 10 Nov 2020 22:39:07 +0100
Subject: [PATCH] Limited synchronized association access

---
 src/main/java/org/warp/commonutils/type/Association.java    | 4 ++++
 src/main/java/org/warp/commonutils/type/BiAssociation.java  | 4 ++++
 .../org/warp/commonutils/type/SynchronizedAssociation.java  | 6 +++---
 .../warp/commonutils/type/SynchronizedBiAssociation.java    | 6 +++---
 4 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/src/main/java/org/warp/commonutils/type/Association.java b/src/main/java/org/warp/commonutils/type/Association.java
index 6579138..a7a3927 100644
--- a/src/main/java/org/warp/commonutils/type/Association.java
+++ b/src/main/java/org/warp/commonutils/type/Association.java
@@ -104,4 +104,8 @@ public interface Association<T, U> {
 	static <T, U> Association<T, U> synchronize(Association<T, U> association) {
 		return new SynchronizedAssociation(association);
 	}
+
+	static <T, U> Association<T, U> synchronize(Association<T, U> association, Object lock) {
+		return new SynchronizedAssociation(association, lock);
+	}
 }
diff --git a/src/main/java/org/warp/commonutils/type/BiAssociation.java b/src/main/java/org/warp/commonutils/type/BiAssociation.java
index f2ade49..0310d9a 100644
--- a/src/main/java/org/warp/commonutils/type/BiAssociation.java
+++ b/src/main/java/org/warp/commonutils/type/BiAssociation.java
@@ -103,4 +103,8 @@ public interface BiAssociation<T, U> {
 	static <T, U> BiAssociation<T, U> synchronize(BiAssociation<T, U> association) {
 		return new SynchronizedBiAssociation(association);
 	}
+
+	static <T, U> BiAssociation<T, U> synchronize(BiAssociation<T, U> association, Object lock) {
+		return new SynchronizedBiAssociation(association, lock);
+	}
 }
diff --git a/src/main/java/org/warp/commonutils/type/SynchronizedAssociation.java b/src/main/java/org/warp/commonutils/type/SynchronizedAssociation.java
index c93bb0f..2f48e8e 100644
--- a/src/main/java/org/warp/commonutils/type/SynchronizedAssociation.java
+++ b/src/main/java/org/warp/commonutils/type/SynchronizedAssociation.java
@@ -3,17 +3,17 @@ package org.warp.commonutils.type;
 import java.util.Optional;
 import java.util.Set;
 
-public class SynchronizedAssociation<T, U> implements Association<T, U> {
+public final class SynchronizedAssociation<T, U> implements Association<T, U> {
 
 	private final Association<T,U> association;
 	private final Object lock;
 
-	public SynchronizedAssociation(Association<T, U> association) {
+	SynchronizedAssociation(Association<T, U> association) {
 		this.association = association;
 		this.lock = new Object();
 	}
 
-	public SynchronizedAssociation(Association<T, U> association, Object lock) {
+	SynchronizedAssociation(Association<T, U> association, Object lock) {
 		this.association = association;
 		this.lock = lock;
 	}
diff --git a/src/main/java/org/warp/commonutils/type/SynchronizedBiAssociation.java b/src/main/java/org/warp/commonutils/type/SynchronizedBiAssociation.java
index bb0475e..b5d45d0 100644
--- a/src/main/java/org/warp/commonutils/type/SynchronizedBiAssociation.java
+++ b/src/main/java/org/warp/commonutils/type/SynchronizedBiAssociation.java
@@ -2,17 +2,17 @@ package org.warp.commonutils.type;
 
 import java.util.Optional;
 
-public class SynchronizedBiAssociation<T, U> implements BiAssociation<T, U> {
+public final class SynchronizedBiAssociation<T, U> implements BiAssociation<T, U> {
 
 	private final BiAssociation<T,U> association;
 	private final Object lock;
 
-	public SynchronizedBiAssociation(BiAssociation<T, U> association) {
+	SynchronizedBiAssociation(BiAssociation<T, U> association) {
 		this.association = association;
 		this.lock = new Object();
 	}
 
-	public SynchronizedBiAssociation(BiAssociation<T, U> association, Object lock) {
+	SynchronizedBiAssociation(BiAssociation<T, U> association, Object lock) {
 		this.association = association;
 		this.lock = lock;
 	}