sascha@305: package de.intevation.artifactdatabase;
sascha@305: 
sascha@305: import de.intevation.artifacts.common.utils.Config;
sascha@305: 
sascha@305: import de.intevation.artifactdatabase.db.SQL;
sascha@305: import de.intevation.artifactdatabase.db.DBConnection;
sascha@305: 
sascha@305: public class DBConfig
sascha@305: {
sascha@305:     /**
sascha@305:      * XPath to access the database driver within the global configuration.
sascha@305:      */
sascha@305:     public static final String DB_DRIVER =
sascha@305:         "/artifact-database/database/driver/text()";
sascha@305:     /**
sascha@305:      * XPath to access the database URL within the global configuration.
sascha@305:      */
sascha@305:     public static final String DB_URL =
sascha@305:         "/artifact-database/database/url/text()";
sascha@305:     /**
sascha@305:      * XPath to access the database use within the global configuration.
sascha@305:      */
sascha@305:     public static final String DB_USER =
sascha@305:         "/artifact-database/database/user/text()";
sascha@305:     /**
sascha@305:      * XPath to access the database password within the global configuration.
sascha@305:      */
sascha@305:     public static final String DB_PASSWORD =
sascha@305:         "/artifact-database/database/password/text()";
sascha@305: 
sascha@305:     private static DBConfig instance;
sascha@305: 
sascha@305:     private DBConnection dbConnection;
sascha@305:     private SQL          sql;
sascha@305: 
sascha@305:     private DBConfig() {
sascha@305:     }
sascha@305: 
sascha@305:     private DBConfig(DBConnection dbConnection, SQL sql) {
sascha@305:         this.dbConnection = dbConnection;
sascha@305:         this.sql          = sql;
sascha@305:     }
sascha@305: 
sascha@305:     public static synchronized DBConfig getInstance() {
sascha@305:         if (instance == null) {
sascha@305:             instance = createInstance();
sascha@305:         }
sascha@305:         return instance;
sascha@305:     }
sascha@305: 
sascha@305:     public SQL getSQL() {
sascha@305:         return sql;
sascha@305:     }
sascha@305: 
sascha@305:     public DBConnection getDBConnection() {
sascha@305:         return dbConnection;
sascha@305:     }
sascha@305: 
sascha@305:     private static DBConfig createInstance() {
sascha@305:         
sascha@305:         String driver = Config.getStringXPath(
sascha@305:             DB_DRIVER, DBConnection.DEFAULT_DRIVER);
sascha@305: 
sascha@305:         String url = Config.getStringXPath(
sascha@305:             DB_URL, DBConnection.DEFAULT_URL);
sascha@305: 
sascha@305:         url = Config.replaceConfigDir(url);
sascha@305: 
sascha@305:         String user = Config.getStringXPath(
sascha@305:             DB_USER, DBConnection.DEFAULT_USER);
sascha@305: 
sascha@305:         String password = Config.getStringXPath(
sascha@305:             DB_PASSWORD, DBConnection.DEFAULT_PASSWORD);
sascha@305: 
sascha@305:         DBConnection dbConnection = new DBConnection(
sascha@305:             driver, url, user, password);
sascha@305: 
sascha@305:         SQL sql = new SQL(driver);
sascha@305: 
sascha@305:         return new DBConfig(dbConnection, sql);
sascha@305:     }
sascha@305: }
sascha@305: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :