Java tutorial
/* $Id$ */ /* * ProgramProfilingMessageSymbolSqlAdapter.java * * Network Embedded Sensor Testbed (NESTbed) * * Copyright (C) 2006-2007 * Dependable Systems Research Group * School of Computing * Clemson University * Andrew R. Dalton and Jason O. Hallstrom * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the * * Free Software Foundation, Inc. * 51 Franklin Street, Fifth Floor * Boston, MA 02110-1301, USA. */ package edu.clemson.cs.nestbed.server.adaptation.sql; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.Statement; import java.sql.SQLException; import java.util.Date; import java.util.HashMap; import java.util.Map; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import edu.clemson.cs.nestbed.common.model.ProgramProfilingMessageSymbol; import edu.clemson.cs.nestbed.server.adaptation.AdaptationException; import edu.clemson.cs.nestbed.server.adaptation.ProgramProfilingMessageSymbolAdapter; public class ProgramProfilingMessageSymbolSqlAdapter extends SqlAdapter implements ProgramProfilingMessageSymbolAdapter { private final static Log log = LogFactory.getLog(ProgramProfilingMessageSymbolSqlAdapter.class); private enum Index { ID, PDCONFID, PROGMSGSYMID, TIMESTAMP; public int index() { return ordinal() + 1; } } public Map<Integer, ProgramProfilingMessageSymbol> readProgramProfilingMessageSymbols() throws AdaptationException { Map<Integer, ProgramProfilingMessageSymbol> profilingMessageSymbols; profilingMessageSymbols = new HashMap<Integer, ProgramProfilingMessageSymbol>(); Connection connection = null; Statement statement = null; ResultSet resultSet = null; try { String query = "SELECT * FROM ProgramProfilingMessageSymbols"; connection = DriverManager.getConnection(CONN_STR); statement = connection.createStatement(); resultSet = statement.executeQuery(query); while (resultSet.next()) { ProgramProfilingMessageSymbol profilingMessageSymbol = getProfilingMessageSymbol(resultSet); profilingMessageSymbols.put(profilingMessageSymbol.getID(), profilingMessageSymbol); } } catch (SQLException ex) { String msg = "SQLException in readProgramProfilingMessageSymbols"; log.error(msg, ex); throw new AdaptationException(msg, ex); } finally { try { resultSet.close(); } catch (Exception ex) { } try { statement.close(); } catch (Exception ex) { } try { connection.close(); } catch (Exception ex) { } } return profilingMessageSymbols; } public ProgramProfilingMessageSymbol createNewProfilingMessageSymbol(int configID, int programMessageSymbolID) throws AdaptationException { ProgramProfilingMessageSymbol profilingMessageSymbol = null; Connection connection = null; Statement statement = null; ResultSet resultSet = null; try { String query = "INSERT INTO ProgramProfilingMessageSymbols" + "(projectDeploymentConfigurationID, programMessageSymbolID)" + " VALUES (" + configID + ", " + programMessageSymbolID + ")"; connection = DriverManager.getConnection(CONN_STR); statement = connection.createStatement(); statement.executeUpdate(query); query = "SELECT * FROM ProgramProfilingMessageSymbols WHERE " + "projectDeploymentConfigurationID = " + configID + " AND " + "programMessageSymbolID = " + programMessageSymbolID; resultSet = statement.executeQuery(query); if (!resultSet.next()) { connection.rollback(); String msg = "Attempt to create program profiling message " + "symbol failed."; log.error(msg); throw new AdaptationException(msg); } profilingMessageSymbol = getProfilingMessageSymbol(resultSet); connection.commit(); } catch (SQLException ex) { try { connection.rollback(); } catch (Exception e) { } String msg = "SQLException in createNewProfilingMessageSymbol"; log.error(msg, ex); throw new AdaptationException(msg, ex); } finally { try { resultSet.close(); } catch (Exception ex) { } try { statement.close(); } catch (Exception ex) { } try { connection.close(); } catch (Exception ex) { } } return profilingMessageSymbol; } public ProgramProfilingMessageSymbol deleteProfilingMessageSymbol(int id) throws AdaptationException { ProgramProfilingMessageSymbol profilingMessageSymbol = null; Connection connection = null; Statement statement = null; ResultSet resultSet = null; try { String query = "SELECT * FROM ProgramProfilingMessageSymbols " + "WHERE id = " + id; connection = DriverManager.getConnection(CONN_STR); statement = connection.createStatement(); resultSet = statement.executeQuery(query); if (!resultSet.next()) { connection.rollback(); String msg = "Attempt to delete program profiling message " + "symbol failed."; log.error(msg); throw new AdaptationException(msg); } profilingMessageSymbol = getProfilingMessageSymbol(resultSet); query = "DELETE FROM ProgramProfilingMessageSymbols " + "WHERE id = " + id; statement.executeUpdate(query); connection.commit(); } catch (SQLException ex) { try { connection.rollback(); } catch (Exception e) { } String msg = "SQLException in deleteProfilingMessageSymbol"; log.error(msg, ex); throw new AdaptationException(msg, ex); } finally { try { resultSet.close(); } catch (Exception ex) { } try { statement.close(); } catch (Exception ex) { } try { connection.close(); } catch (Exception ex) { } } return profilingMessageSymbol; } private final ProgramProfilingMessageSymbol getProfilingMessageSymbol(ResultSet resultSet) throws SQLException { int id = resultSet.getInt(Index.ID.index()); int pdConfId = resultSet.getInt(Index.PDCONFID.index()); int progMsgSymID = resultSet.getInt(Index.PROGMSGSYMID.index()); Date timestamp = resultSet.getDate(Index.TIMESTAMP.index()); return new ProgramProfilingMessageSymbol(id, pdConfId, progMsgSymID, timestamp); } }