001/* 002 * (C) Copyright 2006-2007 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Nuxeo - initial API and implementation 018 * 019 * $Id: AbstractNode.java 20645 2007-06-17 13:16:54Z sfermigier $ 020 */ 021 022package org.nuxeo.ecm.platform.relations.api.impl; 023 024import org.nuxeo.ecm.platform.relations.api.Node; 025 026/** 027 * Abstract class for nodes. 028 * <p> 029 * Nodes can be resources, blank nodes or literals. 030 * 031 * @author <a href="mailto:at@nuxeo.com">Anahide Tchertchian</a> 032 */ 033public abstract class AbstractNode implements Node { 034 035 private static final long serialVersionUID = 1L; 036 037 @Override 038 public boolean isLiteral() { 039 return false; 040 } 041 042 @Override 043 public boolean isBlank() { 044 return false; 045 } 046 047 @Override 048 public boolean isResource() { 049 return false; 050 } 051 052 @Override 053 public boolean isQNameResource() { 054 return false; 055 } 056 057 @Override 058 public int compareTo(Node o) { 059 // dummy override, just used to compare statements lists 060 return toString().compareTo(o.toString()); 061 } 062 063}