o Simplified cloning

git-svn-id: https://svn.apache.org/repos/asf/maven/components/trunk@805825 13f79535-47bb-0310-9956-ffa450edef68

maven-plugin-api/src/main/java/org/apache/maven/plugin/descriptor/MojoDescriptor.java

@@ -615,4 +615,21 @@ public class MojoDescriptor
     {
         return executeGoal;
     }
+
+    /**
+     * Creates a shallow copy of this mojo descriptor.
+     */
+    @Override
+    public MojoDescriptor clone()
+    {
+        try
+        {
+            return (MojoDescriptor) super.clone();
+        }
+        catch ( CloneNotSupportedException e )
+        {
+            throw new UnsupportedOperationException( e );
+        }
+    }
+
 }

maven-plugin-api/src/main/java/org/apache/maven/plugin/descriptor/Parameter.java

@@ -23,6 +23,7 @@ package org.apache.maven.plugin.descriptor;
  * @author Jason van Zyl
  */
 public class Parameter
+    implements Cloneable
 {
     private String alias;
 
@@ -186,4 +187,21 @@ public class Parameter
     {
         this.since = since;
     }
+
+    /**
+     * Creates a shallow copy of this parameter.
+     */
+    @Override
+    public Parameter clone()
+    {
+        try
+        {
+            return (Parameter) super.clone();
+        }
+        catch ( CloneNotSupportedException e )
+        {
+            throw new UnsupportedOperationException( e );
+        }
+    }
+
 }

maven-plugin-api/src/main/java/org/apache/maven/plugin/descriptor/PluginDescriptor.java

@@ -50,6 +50,7 @@ import org.codehaus.plexus.util.xml.pull.XmlPullParserException;
  */
 public class PluginDescriptor
     extends ComponentSetDescriptor
+    implements Cloneable
 {
 
     private static final String LIFECYCLE_DESCRIPTOR = "META-INF/maven/lifecycle.xml";
@@ -412,4 +413,20 @@ public class PluginDescriptor
         }
     }
 
+    /**
+     * Creates a shallow copy of this plugin descriptor.
+     */
+    @Override
+    public PluginDescriptor clone()
+    {
+        try
+        {
+            return (PluginDescriptor) super.clone();
+        }
+        catch ( CloneNotSupportedException e )
+        {
+            throw new UnsupportedOperationException( e );
+        }
+    }
+
 }

maven-plugin-api/src/main/java/org/apache/maven/plugin/descriptor/Requirement.java

@@ -25,6 +25,7 @@ package org.apache.maven.plugin.descriptor;
  * @author <a href="mailto:brett@apache.org">Brett Porter</a>
  */
 public class Requirement
+    implements Cloneable
 {
     private final String role;
 
@@ -51,4 +52,21 @@ public class Requirement
     {
         return roleHint;
     }
+
+    /**
+     * Creates a shallow copy of this requirement.
+     */
+    @Override
+    public Requirement clone()
+    {
+        try
+        {
+            return (Requirement) super.clone();
+        }
+        catch ( CloneNotSupportedException e )
+        {
+            throw new UnsupportedOperationException( e );
+        }
+    }
+
 }