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.contribution; 025 026 import net.jcip.annotations.Immutable; 027 import org.jboss.dna.common.util.HashCode; 028 import org.jboss.dna.graph.Location; 029 import org.jboss.dna.graph.property.DateTime; 030 031 /** 032 * The record of a non-empty source contribution from a single location within the source. 033 * 034 * @author Randall Hauch 035 */ 036 @Immutable 037 public abstract class NonEmptyContribution extends Contribution { 038 039 /** 040 * This is the first version of this class. See the documentation of MergePlan.serialVersionUID. 041 */ 042 private static final long serialVersionUID = 1L; 043 044 private final Location locationInSource; 045 046 /** 047 * Create a contribution of node properties from the source with the supplied name. 048 * 049 * @param sourceName the name of the source, which may not be null or blank 050 * @param workspaceName the name of the workspace, which may not be null or blank 051 * @param locationInSource the location in the source for this contributed information; may not be null 052 * @param expirationTime the time (in UTC) after which this contribution should be considered expired, or null if there is no 053 * expiration time 054 */ 055 protected NonEmptyContribution( String sourceName, 056 String workspaceName, 057 Location locationInSource, 058 DateTime expirationTime ) { 059 super(sourceName, workspaceName, expirationTime); 060 assert locationInSource != null; 061 this.locationInSource = locationInSource; 062 } 063 064 /** 065 * {@inheritDoc} 066 * 067 * @see org.jboss.dna.connector.federation.contribution.Contribution#getLocationInSource() 068 */ 069 @Override 070 public Location getLocationInSource() { 071 return locationInSource; 072 } 073 074 /** 075 * {@inheritDoc} 076 * <p> 077 * This implementation returns the hash code of the {@link #getSourceName() source name}, and is compatible with the 078 * implementation of {@link #equals(Object)}. 079 * </p> 080 */ 081 @Override 082 public int hashCode() { 083 return HashCode.compute(this.getSourceName(), this.getLocationInSource()); 084 } 085 086 /** 087 * {@inheritDoc} 088 */ 089 @Override 090 public boolean equals( Object obj ) { 091 if (obj == this) return true; 092 if (obj instanceof NonEmptyContribution) { 093 NonEmptyContribution that = (NonEmptyContribution)obj; 094 if (!this.getSourceName().equals(that.getSourceName())) return false; 095 if (!this.getWorkspaceName().equals(that.getWorkspaceName())) return false; 096 if (!this.getLocationInSource().equals(that.getLocationInSource())) return false; 097 return true; 098 } 099 return false; 100 } 101 }