Java tutorial
/* * Copyright (c) 2005-2009 Grameen Foundation USA * All rights reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or * implied. See the License for the specific language governing * permissions and limitations under the License. * * See also http://www.apache.org/licenses/LICENSE-2.0.html for an * explanation of the license and how it is applied. */ package org.mifos.group.repository; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import org.mifos.core.MifosException; import org.mifos.group.domain.Group; import org.springframework.validation.Validator; public class InMemoryGroupDao implements GroupDao { private int nextId = 1; private final Map<Integer, Group> groups = new HashMap<Integer, Group>(); @Override public Group create(String name) throws MifosException { Group group = new Group(generateNextId(), name); groups.put(group.getId(), group); return group; } @Override public Group get(Integer groupId) { return groups.get(groupId); } private Validator validator; public Validator getValidator() { return validator; } public void setValidator(Validator validator) { this.validator = validator; } @Override public List<Group> getAll() { ArrayList<Group> groupList = new ArrayList<Group>(); groupList.addAll(groups.values()); return groupList; } private Integer generateNextId() { synchronized (this) { return Integer.valueOf(nextId++); } } }