Made it possible to configure single attributes. This is to help container style tasks.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@269094 13f79535-47bb-0310-9956-ffa450edef68

proposal/myrmidon/src/java/org/apache/myrmidon/components/configurer/Configurer.java

@@ -34,4 +34,18 @@ public interface Configurer
      */
     void configure( Object object, Configuration configuration, Context context )
         throws ConfigurationException;
+
+    /**
+     * Configure named attribute of object in a particular context.
+     * This configuring can be done in different ways for different
+     * configurers.
+     *
+     * @param object the object
+     * @param name the attribute name
+     * @param value the attribute value
+     * @param context the Context
+     * @exception ConfigurationException if an error occurs
+     */
+    void configure( Object object, String name, String value, Context context )
+        throws ConfigurationException;
 }

proposal/myrmidon/src/java/org/apache/myrmidon/components/configurer/DefaultConfigurer.java

@@ -149,6 +149,26 @@ public class DefaultConfigurer
         }
     }
 
+    /**
+     * Configure named attribute of object in a particular context.
+     * This configuring can be done in different ways for different
+     * configurers.
+     *
+     * @param object the object
+     * @param name the attribute name
+     * @param value the attribute value
+     * @param context the Context
+     * @exception ConfigurationException if an error occurs
+     */
+    public void configure( final Object object, 
+                           final String name, 
+                           final String value, 
+                           final Context context )
+        throws ConfigurationException
+    {
+        configureAttribute( object, name, value, context );
+    }
+
     /**
      * Try to configure content of an object.
      *
@@ -173,7 +193,11 @@ public class DefaultConfigurer
     {
         for( int i = 0; i < RESERVED_ATTRIBUTES.length; i++ )
         {
-            if( RESERVED_ATTRIBUTES[ i ].equals( name ) ) return;
+            if( RESERVED_ATTRIBUTES[ i ].equals( name ) ) 
+            {
+                throw new ConfigurationException( "Can not specify reserved attribute " + 
+                                                  name );
+            }
         }
 
         final String methodName = getMethodNameFor( name );