Java tutorial
/******************************************************************************* * Copyright 2013 Andrea Bottoli, Lorenzo Pagliari, Marko Brcic, Dzana Kujan, Nikola Radisavljevic, Jorn Tillmanns, Miraldi Fifo * * 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 dsd.dao; import java.sql.Connection; import java.sql.ResultSet; import java.sql.Timestamp; import java.util.Calendar; import java.util.List; import org.apache.commons.lang3.StringUtils; import sun.reflect.generics.reflectiveObjects.NotImplementedException; import dsd.model.ParsedInputFile; import dsd.model.enums.eFileType; public class ParsedInputFilesDAO { private static String tableName = "parsed_input_files"; private static String[] tableFields = new String[] { "name", "type", "stored_path", "successfully_parsed", "timestamp" }; public static int InsertParsedInputFile(List<ParsedInputFile> listOfParsedInputFile) { try { Connection con = DAOProvider.getDataSource().getConnection(); int counter = 0; for (ParsedInputFile parsedInputFile : listOfParsedInputFile) { try { counter += DAOProvider.InsertRowSecure(tableName, StringUtils.join(tableFields, ','), con, PrepareValuesForInsert(parsedInputFile)); } catch (Exception exc) { exc.printStackTrace(); } } con.close(); return counter; } catch (Exception exc) { exc.printStackTrace(); } return 0; } public static int UpdateParsedInputFile(List<ParsedInputFile> listOfParsedInputFile) { try { Connection con = DAOProvider.getDataSource().getConnection(); int counter = 0; try { throw new NotImplementedException(); // counter += DAOProvider.UpdateRowSecure(tableName, tableFields, "parameter", con, // PrepareValuesForInsert(parameter), null); } catch (Exception exc) { exc.printStackTrace(); } con.close(); return counter; } catch (Exception exc) { exc.printStackTrace(); } return 0; } public static boolean IsAlreadyParsed(String fileName) { boolean isAlreadyParsed = false; try { Connection con = DAOProvider.getDataSource().getConnection(); try { Object[] parameters = new Object[1]; parameters[0] = fileName; ResultSet results = DAOProvider.SelectTableSecure(tableName, " count(*) ", " name = ? ", "", con, parameters); while (results.next()) { isAlreadyParsed = results.getInt(1) == 1 ? true : false; } } catch (Exception exc) { exc.printStackTrace(); } con.close(); } catch (Exception exc) { exc.printStackTrace(); } return isAlreadyParsed; } public static String FetchStoredPath(eFileType fileType, Calendar date) { String storedPath = null; try { Connection con = DAOProvider.getDataSource().getConnection(); try { Object[] parameters = new Object[3]; parameters[0] = new Integer(fileType.getCode()); parameters[1] = new Integer(fileType.getCode()); parameters[2] = new Timestamp(date.getTimeInMillis()); ResultSet results = DAOProvider.SelectTableSecure(tableName, " stored_path ", " type = ? and timestamp = (select max(timestamp) from parsed_input_files where type = ? and timestamp <= ?) ", "", con, parameters); while (results.next()) { storedPath = results.getString(1); } } catch (Exception exc) { exc.printStackTrace(); } con.close(); } catch (Exception exc) { exc.printStackTrace(); } return storedPath; } public static long GetMaxTimestamp(eFileType fileType) { long timestamp = 0; try { Connection con = DAOProvider.getDataSource().getConnection(); try { Object[] parameters = new Object[1]; parameters[0] = new Integer(fileType.getCode()); ResultSet results = DAOProvider.SelectTableSecure(tableName, " max(timestamp) ", " type = ? ", "", con, parameters); while (results.next()) { timestamp = results.getTimestamp(1).getTime(); } } catch (Exception exc) { // exc.printStackTrace(); timestamp = 0; } con.close(); } catch (Exception exc) { exc.printStackTrace(); } return timestamp; } public static long GetCount(eFileType fileType) { long count = 0; try { Connection con = DAOProvider.getDataSource().getConnection(); try { Object[] parameters = new Object[1]; parameters[0] = new Integer(fileType.getCode()); ResultSet results = DAOProvider.SelectTableSecure(tableName, " count(*) ", " type = ? ", "", con, parameters); while (results.next()) { count = results.getLong(1); } } catch (Exception exc) { exc.printStackTrace(); } con.close(); } catch (Exception exc) { exc.printStackTrace(); } return count; } private static Object[] PrepareValuesForInsert(ParsedInputFile dataTuple) { Object[] valueArray = new Object[5]; valueArray[0] = dataTuple.getName(); valueArray[1] = new Integer(dataTuple.getFileType().getCode()); valueArray[2] = dataTuple.getStoredPath(); valueArray[3] = new Integer(dataTuple.isSuccessfullyParsed() ? 1 : 0); valueArray[4] = new Timestamp(dataTuple.getTimestamp()); return valueArray; } }