001    /*
002     * JBoss DNA (http://www.jboss.org/dna)
003     * See the COPYRIGHT.txt file distributed with this work for information
004     * regarding copyright ownership.  Some portions may be licensed
005     * to Red Hat, Inc. under one or more contributor license agreements.
006     * See the AUTHORS.txt file in the distribution for a full listing of 
007     * individual contributors. 
008     *
009     * JBoss DNA is free software. Unless otherwise indicated, all code in JBoss DNA
010     * is licensed to you under the terms of the GNU Lesser General Public License as
011     * published by the Free Software Foundation; either version 2.1 of
012     * the License, or (at your option) any later version.
013     *
014     * JBoss DNA is distributed in the hope that it will be useful,
015     * but WITHOUT ANY WARRANTY; without even the implied warranty of
016     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
017     * Lesser General Public License for more details.
018     *
019     * You should have received a copy of the GNU Lesser General Public
020     * License along with this software; if not, write to the Free
021     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
022     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
023     */
024    package org.jboss.dna.connector.federation.merge.strategy;
025    
026    import java.util.List;
027    import org.jboss.dna.connector.federation.contribution.Contribution;
028    import org.jboss.dna.connector.federation.merge.FederatedNode;
029    import org.jboss.dna.graph.ExecutionContext;
030    
031    /**
032     * @author Randall Hauch
033     */
034    public interface MergeStrategy {
035    
036        /**
037         * Merge the contributions into a single
038         * 
039         * @param federatedNode the federated node into which the contributions are to be merged; never null
040         * @param contributions the contributions to the node; never null, never empty, and never containing nulls
041         * @param context the context in which this operation is to be performed; never null
042         */
043        public void merge( FederatedNode federatedNode,
044                           List<Contribution> contributions,
045                           ExecutionContext context );
046    
047    }