Added a Factory and a Configuration Class

lib/PatPeter/SQLibrary/DatabaseConfig.java

@@ -0,0 +1,142 @@
+/************************************************************************
+ * This file is part of SQLibrary.									
+ *																		
+ * SQLibrary 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 3 of the License, or		
+ * (at your option) any later version.									
+ *																		
+ * SQLibrary 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 SQLibrary.  If not, see <http://www.gnu.org/licenses/>.
+ ************************************************************************/
+package lib.PatPeter.SQLibrary;
+
+import java.util.EnumMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.logging.Logger;
+
+/**
+ * @author Balor (aka Antoine Aflalo)
+ * 
+ */
+public class DatabaseConfig {
+	private final Map<Parameter, String> config = new EnumMap<Parameter, String>(Parameter.class);
+	private DatabaseType type;
+	private Logger log;
+
+	public enum DatabaseType {
+		MYSQL,
+		SQLITE,
+		ALL;
+	}
+
+	public enum Parameter {
+		HOSTNAME(DatabaseType.MYSQL),
+		USER(DatabaseType.MYSQL),
+		PASSWORD(DatabaseType.MYSQL),
+		PORT_NUMBER(DatabaseType.MYSQL),
+		DATABASE(DatabaseType.MYSQL),
+		DB_PREFIX(DatabaseType.ALL),
+		DB_LOCATION(DatabaseType.SQLITE),
+		DB_NAME(DatabaseType.SQLITE);
+		private Set<DatabaseType> dbTypes = new HashSet<DatabaseType>();
+		private static Map<DatabaseType, Integer> count;
+
+		/**
+		 * 
+		 */
+		private Parameter(DatabaseType... type) {
+			for (int i = 0; i < type.length; i++) {
+				dbTypes.add(type[i]);
+				updateCount(type[i]);
+			}
+
+		}
+
+		public boolean validParam(DatabaseType toCheck) {
+			if (dbTypes.contains(DatabaseType.ALL))
+				return true;
+			if (dbTypes.contains(toCheck))
+				return true;
+			return false;
+
+		}
+
+		private static void updateCount(DatabaseType type) {
+			if (count == null)
+				count = new EnumMap<DatabaseType, Integer>(DatabaseType.class);
+			Integer nb = count.get(type);
+			if (nb == null)
+				nb = 1;
+			else
+				nb++;
+			count.put(type, nb);
+		}
+
+		public static int getCount(DatabaseType type) {
+			int nb = count.get(DatabaseType.ALL) + count.get(type);
+			return nb;
+		}
+	}
+
+	/**
+	 * @param type
+	 *            the type to set
+	 */
+	public void setType(DatabaseType type) throws IllegalArgumentException {
+		if (type == DatabaseType.ALL)
+			throw new IllegalArgumentException("You can't set your database type to ALL");
+		this.type = type;
+	}
+
+	/**
+	 * @param log
+	 *            the log to set
+	 */
+	public void setLog(Logger log) {
+		this.log = log;
+	}
+
+	/**
+	 * @return the type
+	 */
+	public DatabaseType getType() {
+		return type;
+	}
+
+	/**
+	 * @return the log
+	 */
+	public Logger getLog() {
+		return log;
+	}
+
+	public DatabaseConfig setParameter(Parameter param, String value) throws NullPointerException,
+			InvalidConfiguration {
+		if (this.type == null)
+			throw new NullPointerException("You must set the type of the database first");
+		if (!param.validParam(type))
+			throw new InvalidConfiguration(param.toString()
+					+ " is invalid for a database type of : " + type.toString());
+		config.put(param, value);
+		return this;
+
+	}
+
+	public String getParameter(Parameter param) {
+		return config.get(param);
+	}
+
+	public boolean isValid() throws InvalidConfiguration {
+		if (log == null)
+			throw new InvalidConfiguration("You need to set the logger.");
+		return config.size() == Parameter.getCount(type);
+	}
+}

lib/PatPeter/SQLibrary/DatabaseFactory.java

@@ -0,0 +1,46 @@
+/************************************************************************
+ * This file is part of SQLibrary.									
+ *																		
+ * SQLibrary 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 3 of the License, or		
+ * (at your option) any later version.									
+ *																		
+ * SQLibrary 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 SQLibrary.  If not, see <http://www.gnu.org/licenses/>.
+ ************************************************************************/
+package lib.PatPeter.SQLibrary;
+
+import lib.PatPeter.SQLibrary.DatabaseConfig.Parameter;
+
+/**
+ * @author Balor (aka Antoine Aflalo)
+ * 
+ */
+public class DatabaseFactory {
+	public static DatabaseHandler createDatabase(DatabaseConfig config) throws InvalidConfiguration {
+		if (!config.isValid())
+			throw new InvalidConfiguration(
+					"The configuration is invalid, you don't have enought parameter for that DB : "
+							+ config.getType());
+		switch (config.getType()) {
+		case MYSQL:
+			return new MySQL(config.getLog(), config.getParameter(Parameter.DB_PREFIX),
+					config.getParameter(Parameter.HOSTNAME),
+					config.getParameter(Parameter.PORT_NUMBER),
+					config.getParameter(Parameter.DATABASE), config.getParameter(Parameter.USER),
+					config.getParameter(Parameter.PASSWORD));
+		case SQLITE:
+			return new SQLite(config.getLog(), config.getParameter(Parameter.DB_PREFIX),
+					config.getParameter(Parameter.DB_NAME),
+					config.getParameter(Parameter.DB_LOCATION));
+		default:
+			return null;
+		}
+	}
+}

lib/PatPeter/SQLibrary/InvalidConfiguration.java

@@ -0,0 +1,74 @@
+/************************************************************************
+ * This file is part of SQLibrary.									
+ *																		
+ * SQLibrary 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 3 of the License, or		
+ * (at your option) any later version.									
+ *																		
+ * SQLibrary 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 SQLibrary.  If not, see <http://www.gnu.org/licenses/>.
+ ************************************************************************/
+package lib.PatPeter.SQLibrary;
+
+/**
+ * @author Balor (aka Antoine Aflalo)
+ *
+ */
+public class InvalidConfiguration extends Exception {
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 7939781253235805155L;
+
+	/**
+	 * 
+	 */
+	public InvalidConfiguration() {
+		// TODO Auto-generated constructor stub
+	}
+
+	/**
+	 * @param message
+	 */
+	public InvalidConfiguration(String message) {
+		super(message);
+		// TODO Auto-generated constructor stub
+	}
+
+	/**
+	 * @param cause
+	 */
+	public InvalidConfiguration(Throwable cause) {
+		super(cause);
+		// TODO Auto-generated constructor stub
+	}
+
+	/**
+	 * @param message
+	 * @param cause
+	 */
+	public InvalidConfiguration(String message, Throwable cause) {
+		super(message, cause);
+		// TODO Auto-generated constructor stub
+	}
+
+	/**
+	 * @param message
+	 * @param cause
+	 * @param enableSuppression
+	 * @param writableStackTrace
+	 */
+	public InvalidConfiguration(String message, Throwable cause, boolean enableSuppression,
+			boolean writableStackTrace) {
+		super(message, cause, enableSuppression, writableStackTrace);
+		// TODO Auto-generated constructor stub
+	}
+
+}