2 * Copyright 2005 the original author or authors.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org.wamblee.usermgt.hibernate;
18 import org.wamblee.persistence.hibernate.HibernateSupport;
20 import org.wamblee.usermgt.Group;
21 import org.wamblee.usermgt.GroupSet;
23 import java.util.List;
25 import java.util.TreeSet;
29 * Set of groups backed by the database.
31 * @author Erik Brakkee
33 public class HibernateGroupSet extends HibernateSupport implements GroupSet {
37 private static final String QUERY_FIND_BY_NAME = "findGroupByName";
42 private static final String PARAM_NAME = "name";
47 private static final String QUERY_COUNT_GROUPS = "countGroups";
50 * Creates a new HibernateGroupSet object.
52 public HibernateGroupSet() {
57 * @see org.wamblee.usermgt.GroupSet#groupModified(org.wamblee.usermgt.Group)
62 * @param aGroup DOCUMENT ME!
64 public void groupModified(Group aGroup) {
65 assert aGroup.getPrimaryKey() != null;
70 * @see org.wamblee.usermgt.GroupSet#find(java.lang.String)
75 * @param aName DOCUMENT ME!
77 * @return DOCUMENT ME!
79 * @throws RuntimeException DOCUMENT ME!
81 public Group find(String aName) {
82 List list = getHibernateTemplate()
83 .findByNamedQueryAndNamedParam(QUERY_FIND_BY_NAME, PARAM_NAME, aName);
85 if (list.size() > 1) {
86 throw new RuntimeException(
87 "More than one group with the same name '" + aName + "'");
90 if (list.size() == 0) {
94 return new Group((Group) list.get(0));
98 * @see org.wamblee.usermgt.GroupSet#contains(org.wamblee.usermgt.Group)
103 * @param aGroup DOCUMENT ME!
105 * @return DOCUMENT ME!
107 public boolean contains(Group aGroup) {
108 return find(aGroup.getName()) != null;
112 * @see org.wamblee.usermgt.GroupSet#add(org.wamblee.usermgt.Group)
117 * @param aGroup DOCUMENT ME!
119 * @return DOCUMENT ME!
121 public boolean add(Group aGroup) {
122 assert aGroup.getPrimaryKey() == null;
124 if (contains(aGroup)) {
134 * @see org.wamblee.usermgt.GroupSet#remove(org.wamblee.usermgt.Group)
139 * @param aGroup DOCUMENT ME!
141 * @return DOCUMENT ME!
143 public boolean remove(Group aGroup) {
144 assert aGroup.getPrimaryKey() != null;
146 if (!contains(aGroup)) {
150 Group group = (Group) getHibernateTemplate().merge(aGroup);
151 getHibernateTemplate().delete(group);
152 aGroup.setPrimaryKey(null);
153 aGroup.setPersistedVersion(-1);
159 * @see org.wamblee.usermgt.GroupSet#list()
164 * @return DOCUMENT ME!
166 public Set<Group> list() {
167 Set<Group> groups = new TreeSet<Group>();
168 List<Group> list = getHibernateTemplate().loadAll(Group.class);
170 for (Group group : list) {
171 groups.add(new Group(group));
178 * @see org.wamblee.usermgt.GroupSet#size()
183 * @return DOCUMENT ME!
186 Long result = (Long) getHibernateTemplate()
187 .findByNamedQuery(QUERY_COUNT_GROUPS).get(0);
189 return result.intValue();