001    /*
002     * JBoss, Home of Professional Open Source.
003     * Copyright 2008, Red Hat Middleware LLC, and individual contributors
004     * as indicated by the @author tags. See the copyright.txt file in the
005     * distribution for a full listing of individual contributors. 
006     *
007     * This is free software; you can redistribute it and/or modify it
008     * under the terms of the GNU Lesser General Public License as
009     * published by the Free Software Foundation; either version 2.1 of
010     * the License, or (at your option) any later version.
011     *
012     * This software is distributed in the hope that it will be useful,
013     * but WITHOUT ANY WARRANTY; without even the implied warranty of
014     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015     * Lesser General Public License for more details.
016     *
017     * You should have received a copy of the GNU Lesser General Public
018     * License along with this software; if not, write to the Free
019     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
021     */
022    package org.jboss.dna.connector.federation.merge.strategy;
023    
024    import java.util.List;
025    import org.jboss.dna.connector.federation.contribution.Contribution;
026    import org.jboss.dna.connector.federation.merge.FederatedNode;
027    import org.jboss.dna.graph.ExecutionContext;
028    
029    /**
030     * @author Randall Hauch
031     */
032    public interface MergeStrategy {
033    
034        /**
035         * Merge the contributions into a single
036         * 
037         * @param federatedNode the federated node into which the contributions are to be merged; never null
038         * @param contributions the contributions to the node; never null, never empty, and never containing nulls
039         * @param context the context in which this operation is to be performed; never null
040         */
041        public void merge( FederatedNode federatedNode,
042                           List<Contribution> contributions,
043                           ExecutionContext context );
044    
045    }