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.graph.property.basic; 025 026 import net.jcip.annotations.Immutable; 027 import org.jboss.dna.graph.property.NamespaceRegistry; 028 import org.jboss.dna.graph.property.NamespaceRegistry.Namespace; 029 030 /** 031 * @author Randall Hauch 032 */ 033 @Immutable 034 public class BasicNamespace implements NamespaceRegistry.Namespace { 035 private final String prefix; 036 private final String namespaceUri; 037 038 /** 039 * Create a namespace instance. 040 * 041 * @param prefix the namespace prefix; may not be null (this is not checked) 042 * @param namespaceUri the namespace URI; may not be null (this is not checked) 043 */ 044 public BasicNamespace( String prefix, 045 String namespaceUri ) { 046 assert prefix != null; 047 assert namespaceUri != null; 048 this.prefix = prefix; 049 this.namespaceUri = namespaceUri; 050 } 051 052 /** 053 * {@inheritDoc} 054 * 055 * @see org.jboss.dna.graph.property.NamespaceRegistry.Namespace#getNamespaceUri() 056 */ 057 public String getNamespaceUri() { 058 return namespaceUri; 059 } 060 061 /** 062 * {@inheritDoc} 063 * 064 * @see org.jboss.dna.graph.property.NamespaceRegistry.Namespace#getPrefix() 065 */ 066 public String getPrefix() { 067 return prefix; 068 } 069 070 /** 071 * {@inheritDoc} 072 * 073 * @see java.lang.Object#hashCode() 074 */ 075 @Override 076 public int hashCode() { 077 return namespaceUri.hashCode(); 078 } 079 080 /** 081 * {@inheritDoc} 082 * 083 * @see java.lang.Comparable#compareTo(java.lang.Object) 084 */ 085 public int compareTo( Namespace that ) { 086 if (that == null) return 1; 087 if (this == that) return 0; 088 return this.getNamespaceUri().compareTo(that.getNamespaceUri()); 089 } 090 091 /** 092 * {@inheritDoc} 093 * 094 * @see java.lang.Object#equals(java.lang.Object) 095 */ 096 @Override 097 public boolean equals( Object obj ) { 098 if (obj == this) return true; 099 if (obj instanceof Namespace) { 100 Namespace that = (Namespace)obj; 101 if (!this.namespaceUri.equals(that.getNamespaceUri())) return false; 102 // if (!this.prefix.equals(that.getPrefix())) return false; 103 return true; 104 } 105 return false; 106 } 107 108 /** 109 * {@inheritDoc} 110 * 111 * @see java.lang.Object#toString() 112 */ 113 @Override 114 public String toString() { 115 return prefix + "=" + namespaceUri; 116 } 117 }