2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with any library licensed under the Apache Software License,
22 * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
23 * (or with modified versions of the above that use the same license as the above),
24 * and distribute linked combinations including the two. You must obey the
25 * GNU General Public License in all respects for all of the code used other than
26 * the above mentioned libraries. If you modify this file, you may extend this
27 * exception to your version of the file, but you are not obligated to do so.
28 * If you do not wish to do so, delete this exception statement from your version.
30 package mir.entity.adapter;
32 import java.util.Collection;
33 import java.util.HashMap;
34 import java.util.Iterator;
38 import mir.entity.Entity;
39 import mir.util.CachingRewindableIterator;
41 public class EntityAdapter implements Map {
42 private Entity entity;
43 private EntityAdapterDefinition definition;
44 private Map calculatedFieldsCache;
45 private EntityAdapterModel model;
47 public EntityAdapter(Entity anEntity, EntityAdapterDefinition aDefinition, EntityAdapterModel aModel) {
49 definition = aDefinition;
50 calculatedFieldsCache = new HashMap();
54 public boolean containsKey(Object aKey) {
56 if (aKey instanceof String)
57 return entity.hasValueForField((String) aKey)
58 || definition.hasCalculatedField((String) aKey)
59 || entity.getFields().contains(aKey);
67 public boolean equals(Object anObject) {
68 return anObject instanceof EntityAdapter
69 && ((EntityAdapter) anObject).entity.equals(entity);
72 public int hashCode() {
73 return entity.hashCode();
76 public Entity getEntity() {
80 public EntityAdapterModel getModel() {
84 public Object get(Object aKey) {
87 if (calculatedFieldsCache.containsKey(aKey)) {
88 return calculatedFieldsCache.get(aKey);
90 else if (aKey instanceof String && definition.hasCalculatedField((String) aKey)) {
91 result = definition.getCalculatedField((String) aKey).getValue(this);
92 calculatedFieldsCache.put(aKey, result);
96 else if (aKey instanceof String) {
97 return entity.getValue((String) aKey);
104 public boolean isEmpty() {
108 public Set keySet() {
109 throw new UnsupportedOperationException("EntityAdapter.keySet()");
112 public Object put(Object aKey, Object value) {
113 throw new UnsupportedOperationException("EntityAdapter.put()");
116 public void putAll(Map t) {
117 throw new UnsupportedOperationException("EntityAdapter.putAll()");
120 public Object remove(Object aKey) {
121 throw new UnsupportedOperationException("EntityAdapter.remove()");
125 throw new UnsupportedOperationException("EntityAdapter.size()");
128 public Collection values() {
129 throw new UnsupportedOperationException("EntityAdapter.values()");
132 public void clear() {
133 throw new UnsupportedOperationException("EntityAdapter.clear()");
136 public boolean containsValue(Object value) {
137 throw new UnsupportedOperationException("EntityAdapter.containsValue()");
140 public Set entrySet() {
141 throw new UnsupportedOperationException("EntityAdapter.entrySet()");
144 public Object getRelation(String aWhereClause, String anOrderByClause, String aDefinition) {
147 new CachingRewindableIterator(
148 new EntityIteratorAdapter(
149 aWhereClause, anOrderByClause, -1, getModel(), aDefinition));
151 catch (Throwable t) {
152 throw new RuntimeException(t.getMessage());
156 public EntityAdapter getToOneRelation(String aWhereClause, String anOrderByClause, String aDefinition) {
158 Iterator i = new EntityIteratorAdapter(aWhereClause, anOrderByClause, -1, getModel(), aDefinition);
161 return (EntityAdapter) i.next();
165 catch (Throwable t) {
166 throw new RuntimeException(t.getMessage());