From 53e918956626b05987baa63e9e99bf9a6775f507 Mon Sep 17 00:00:00 2001
From: Carlos Sanchez Gonzalez <carlos@apache.org>
Date: Fri, 15 Feb 2008 02:39:02 +0000
Subject: [PATCH] [MNG-3400] Implement clone properly following Effective Java'
 book considerations

git-svn-id: https://svn.apache.org/repos/asf/maven/components/trunk@627932 13f79535-47bb-0310-9956-ffa450edef68
---
 .../java/org/apache/maven/project/MavenProject.java | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/maven-project/src/main/java/org/apache/maven/project/MavenProject.java b/maven-project/src/main/java/org/apache/maven/project/MavenProject.java
index cb7a781d22..7675f88196 100644
--- a/maven-project/src/main/java/org/apache/maven/project/MavenProject.java
+++ b/maven-project/src/main/java/org/apache/maven/project/MavenProject.java
@@ -80,6 +80,7 @@ import java.util.Stack;
  * </ol>
  */
 public class MavenProject
+    implements Cloneable
 {
     public static final String EMPTY_PROJECT_GROUP_ID = "unknown";
 
@@ -169,10 +170,14 @@ public class MavenProject
     }
 
     /**
-     * @deprecated use {@link #clone()}
+     * @deprecated use {@link #clone()} so subclasses can provide a copy of the same class
      */
     public MavenProject( MavenProject project )
     {
+        deepCopy( project );
+    }
+
+    private final void deepCopy(MavenProject project){
         // disown the parent
 
         // copy fields
@@ -1825,11 +1830,15 @@ public class MavenProject
     }
 
     /**
+     * @throws CloneNotSupportedException
      * @since 2.0.9
      */
     public Object clone()
+        throws CloneNotSupportedException
     {
-        return new MavenProject( this );
+        MavenProject clone = (MavenProject) super.clone();
+        clone.deepCopy( this );
+        return clone;
     }
 
 }