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 * Jean-Marc Orliaguet, Chalmers 018 * 019 * $Id$ 020 */ 021 022package org.nuxeo.theme.relations; 023 024import java.util.ArrayList; 025import java.util.List; 026 027public abstract class AbstractRelation implements Relation { 028 029 public List<Relate> relates; 030 031 private Predicate predicate; 032 033 protected AbstractRelation(Predicate predicate) { 034 this.predicate = predicate; 035 relates = new ArrayList<Relate>(); 036 } 037 038 public abstract RelationTypeFamily getRelationTypeFamily(); 039 040 public Relate getRelate(Integer position) { 041 if (position > relates.size()) { 042 // TODO throw exception; 043 } 044 return relates.get(position - 1); 045 } 046 047 public String hash() { 048 List<String> r = new ArrayList<String>(); 049 for (Relate relate : relates) { 050 r.add(relate.hash()); 051 } 052 return String.format(predicate.hash().replace("_", "%s"), r.toArray()); 053 } 054 055 @Override 056 public String toString() { 057 return "Relation {'" + hash() + "'}"; 058 } 059 060 public Predicate getPredicate() { 061 return predicate; 062 } 063 064 public final void setPredicate(Predicate predicate) { 065 this.predicate = predicate; 066 } 067 068 public boolean hasPredicate(Predicate predicate) { 069 return this.predicate.hash().equals(predicate.hash()); 070 } 071 072 public List<Relate> getRelates() { 073 return relates; 074 } 075 076 public void setRelates(List<Relate> relates) { 077 this.relates = relates; 078 } 079 080}