Java tutorial
/** * Copyright 2011 Nube Technologies * * 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 co.nubetech.crux.dao; import java.util.List; import org.hibernate.JDBCException; import org.hibernate.Session; import org.hibernate.Transaction; import co.nubetech.crux.model.RowAlias; import co.nubetech.crux.util.CruxException; import com.googlecode.s2hibernate.struts2.plugin.annotations.SessionTarget; import com.googlecode.s2hibernate.struts2.plugin.annotations.TransactionTarget; public class RowAliasDAO { @SessionTarget public Session session; @TransactionTarget Transaction transaction; public RowAlias findById(Long id) { RowAlias rowAlias = (RowAlias) session.get(RowAlias.class, id); return rowAlias; } public long save(RowAlias rowAlias) throws CruxException { try { transaction.begin(); session.saveOrUpdate(rowAlias); transaction.commit(); } catch (JDBCException e) { transaction.rollback(); throw new CruxException(e.getSQLException().getMessage(), e); } return rowAlias.getId(); } public long delete(RowAlias rowAlias) throws CruxException { long id = rowAlias.getId(); try { transaction.begin(); session.delete(rowAlias); transaction.commit(); } catch (JDBCException e) { transaction.rollback(); throw new CruxException(e.getSQLException().getMessage(), e); } return id; } public List<RowAlias> findAll() { List<RowAlias> result = session.createQuery("from RowAlias order by id").list(); return result; } }