Java tutorial
/* * Copyright 2014 MIR@MU. * * 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 cz.muni.fi.mir.db.service.impl; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import cz.muni.fi.mir.db.dao.ProgramDAO; import cz.muni.fi.mir.db.domain.Program; import cz.muni.fi.mir.db.service.ProgramService; /** * * @author Dominik Szalai - emptulik at gmail.com */ @Service(value = "programService") @Transactional(readOnly = false) public class ProgramServiceImpl implements ProgramService { @Autowired private ProgramDAO programDAO; @Override public void createProgram(Program program) throws IllegalArgumentException { if (program == null) { throw new IllegalArgumentException("Given input is null."); } programDAO.create(program); } @Override public void deleteProgram(Program program) throws IllegalArgumentException { InputChecker.checkInput(program); programDAO.delete(program.getId()); } @Override public void updateProgram(Program program) throws IllegalArgumentException { InputChecker.checkInput(program); programDAO.update(program); } @Override @Transactional(readOnly = true) public Program getProgramByID(Long id) throws IllegalArgumentException { if (id == null || Long.valueOf("0").compareTo(id) >= 0) { throw new IllegalArgumentException( "Given entity does not have valid id should be greater than one but was [" + id + "]"); } return programDAO.getByID(id); } @Override @Transactional(readOnly = true) public List<Program> getProgramByNameAndVersion(String name, String version) throws IllegalArgumentException { if (name == null || name.length() < 1 || version == null || version.length() < 1) { throw new IllegalArgumentException( "One of inputs was empty name[" + name + "] and version[" + version + "]"); } return programDAO.getProgramByNameAndVersion(name, version); } @Override @Transactional(readOnly = true) public List<Program> getAllPrograms() { return programDAO.getAllPrograms(); } }