http://codehaus-plexus.github.io/plexus-interpolation/: The Plexus project provides a full software stack for creating and executing software projects. (Codehaus Plexus)
  • Jason van Zyl
  • Pete Kazmier ()
  • James Taylor ()
  • Dan Diephouse (Envoi solutions)
  • Kasper Nielsen ()
  • Ben Walding (Walding Consulting Services)
  • Mark Wilkinson
  • Michal Maczka
  • Emmanuel Venisse
  • Trygve Laugstøl
  • Kenney Westerhof
  • Carlos Sanchez
  • Brett Porter
  • John Casey
  • Andrew Williams
  • Rahul Thakur
  • Joakim Erdfelt
  • Olivier Lamy
  • Hervé Boutemy
  • Oleg Gusakov
  • Vincent Siveton
  • Kristian Rosenvold
  • Andreas Gudian
  • Karl Heinz Marbaise
  • Michael Osipov 
package org.codehaus.plexus.interpolation;

/*
 * Copyright 2001-2008 Codehaus Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.ArrayList;
import java.util.List;

public abstract class AbstractValueSource
    implements ValueSource
{
    
    private final List feedback;
    
    protected AbstractValueSource( boolean usesFeedback )
    {
        if ( usesFeedback )
        {
            feedback = new ArrayList();
        }
        else
        {
            feedback = null;
        }
    }

    public void clearFeedback()
    {
        if ( feedback != null )
        {
            feedback.clear();
        }
    }

    public List getFeedback()
    {
        return feedback;
    }

    protected void addFeedback( String message )
    {
        feedback.add( message );
    }
    
    protected void addFeedback( String message, Throwable cause )
    {
        feedback.add( message );
        feedback.add( cause );
    }
}