Java tutorial
/* * Copyright 2016 eul0860. * * 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. */ package net.dstc.mkts.api; import java.util.Collection; import java.util.stream.Collectors; import javax.annotation.ManagedBean; import javax.annotation.Resource; import javax.inject.Inject; import net.dstc.mkts.data.SurveyDO; import net.dstc.mkts.data.SurveyDAO; import org.apache.commons.lang.StringUtils; /** * * @author Patrizio Bruno <desertconsulting@gmail.com> */ @Resource @ManagedBean public class MarketingSurveyApiImpl implements MarketingSurveyApi { @Inject private SurveyDAO data; private DataConverters.Converter converter; private DataConverters.Converter getConverter() { if (converter == null) { converter = DataConverters.getConverter(data); } return converter; } @Override public Collection<SurveyDTO> getList(SurveyDTO query) { SurveyDO daoQuery = null; if (query != null) { daoQuery = getConverter().surveyDTOtoDO(query); } return data.list(daoQuery).stream().map(s -> getConverter().surveyDOtoDTO(s)).collect(Collectors.toList()); } @Override public SurveyDTO insert(SurveyDTO survey) { SurveyDO s = getConverter().surveyDTOtoDO(survey); data.add(s); return getConverter().surveyDOtoDTO(s); } @Override public void update(SurveyDTO survey) { SurveyDO s = getConverter().surveyDTOtoDO(survey); data.update(s); } @Override public void delete(String id) { if (StringUtils.isBlank(id)) { throw new IllegalArgumentException("id must have a value"); } data.delete(id); } @Override public SurveyDTO get(String id) { if (StringUtils.isBlank(id)) { throw new IllegalArgumentException("id must have a value"); } return getConverter().surveyDOtoDTO(data.get(id)); } }