2 * Copyright (C) 2015 Roland Haeder
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 package org.mxchange.pizzaapplication.database.frontend.product;
19 import java.io.IOException;
20 import java.sql.ResultSet;
21 import java.sql.SQLException;
22 import java.text.MessageFormat;
23 import java.util.Iterator;
24 import org.mxchange.jcore.criteria.searchable.SearchCriteria;
25 import org.mxchange.jcore.criteria.searchable.SearchableCritera;
26 import org.mxchange.jcore.database.frontend.BaseDatabaseFrontend;
27 import org.mxchange.jcore.database.result.DatabaseResult;
28 import org.mxchange.jcore.database.result.Result;
29 import org.mxchange.jcore.database.storage.Storeable;
30 import org.mxchange.jcore.exceptions.BadTokenException;
31 import org.mxchange.jcore.exceptions.UnsupportedDatabaseBackendException;
32 import org.mxchange.pizzaapplication.database.product.PizzaProductDatabaseConstants;
33 import org.mxchange.pizzaapplication.product.Product;
36 * Stores and retrieves Contact instances
38 * @author Roland Haeder
40 public class PizzaProductDatabaseFrontend extends BaseDatabaseFrontend implements ProductFrontend {
44 * @throws org.mxchange.jcore.exceptions.UnsupportedDatabaseBackendException If the configured backend is not supported
45 * @throws java.sql.SQLException If any SQL error occurs
47 public PizzaProductDatabaseFrontend () throws UnsupportedDatabaseBackendException, SQLException {
49 this.getLogger().trace("CALLED!"); //NOI18N
52 this.setTableName("products"); //NOI18N
59 * Shuts down the database layer
61 * @throws java.sql.SQLException If an SQL error occurs
62 * @throws java.io.IOException If any IO error occurs
65 public void doShutdown () throws SQLException, IOException {
67 this.getLogger().trace("CALLED!"); //NOI18N
70 this.getBackend().doShutdown();
73 this.getLogger().trace("EXIT!"); //NOI18N
77 @SuppressWarnings ("unchecked")
78 public Iterator<Product> getProducts () throws IOException, BadTokenException, SQLException {
80 this.getLogger().trace("CALLED!"); //NOI18N
82 // Instance search criteria
83 SearchableCritera critera = new SearchCriteria();
86 critera.addCriteria(PizzaProductDatabaseConstants.COLUMN_AVAILABLE, true);
89 Result<? extends Storeable> result = this.getBackend().doSelectByCriteria(critera);
92 this.getLogger().debug(MessageFormat.format("result={0}", result)); //NOI18N
95 Iterator<?> iterator = result.iterator();
98 this.getLogger().trace(MessageFormat.format("iterator={0} - EXIT!", iterator)); //NOI18N
100 // Get iterator and return it
101 return (Iterator<Product>) iterator;
105 * Gets a Result back from given ResultSet instance
107 * @param resultSet ResultSet instance from SQL driver
108 * @return A typorized Result instance
109 * @throws java.sql.SQLException If any SQL error occurs
112 public Result<? extends Storeable> getResultFromSet (final ResultSet resultSet) throws SQLException {
114 this.getLogger().trace(MessageFormat.format("resultSet={0} - CALLED!", resultSet));
116 // Init result instance
117 Result<? extends Storeable> result = new DatabaseResult();
119 // Reset result set before first row
120 resultSet.beforeFirst();
122 // "Walk" through all entries
123 while (resultSet.next()) {
124 // Unwrap whole object
125 Product product = resultSet.unwrap(Product.class);
128 this.getLogger().debug(MessageFormat.format("product={0}", product));
135 this.getLogger().trace(MessageFormat.format("result({0})={1} - EXIT!", result.size(), result));
142 * Parses given line from database backend into a Storeable instance. Please
143 * note that not all backends need this.
145 * @param line Line from database backend
146 * @return A Storeable instance
149 public Storeable parseLineToStoreable (final String line) throws BadTokenException {
151 this.getLogger().trace(MessageFormat.format("line={0} - CALLED!", line)); //NOI18N
154 Product product = this.parseLineToProduct(line);
157 this.getLogger().trace(MessageFormat.format("product={0} - EXIT!", product)); //NOI18N
164 * Parses given line to a Product instance
167 * @return A Product instance from given line
169 private Product parseLineToProduct (final String line) {
170 throw new UnsupportedOperationException(MessageFormat.format("Not supported yet: line={0}", line)); //NOI18N