tim@130: /**
tim@130:  * 
tim@130:  */
tim@130: package de.intevation.gnv.geobackend.base.connectionpool;
tim@130: 
tim@130: import java.util.Properties;
tim@130: 
tim@130: import org.apache.log4j.Logger;
tim@130: 
tim@130: import de.intevation.gnv.geobackend.sde.connectionpool.ArcSDEConnectionPool;
tim@130: 
tim@130: /**
tim@130:  * Factoryimplementation for the Interface ConnectionPool.
tim@130:  * This factory delivers Instances of the Interface ConnectionPool.
tim@130:  * @author Tim Englich <tim.englich@intevation.de>
tim@130:  */
tim@130: public class ConnectionPoolFactory {
tim@130: 
tim@132:     /**
tim@130:      * the logger, used to log exceptions and additonaly information
tim@130:      */
tim@130:     private static Logger log = Logger.getLogger(ConnectionPoolFactory.class);
tim@132: 
tim@130:     
tim@130:     /**
tim@130:      * The singleton Instance of this Factory.
tim@130:      */
tim@132:     private static ConnectionPoolFactory instance = null;
tim@132: 
tim@132:     /**
tim@132:      * The ConnectionPool providing the Connections to the DatabaseBackends
tim@132:      */
tim@132:     private ConnectionPool connectionPool = null;
tim@132: 
tim@132:     /**
tim@132:      * Basic-Constructor of this Class
tim@132:      */
tim@132:     private ConnectionPoolFactory() {
tim@132:     	super();
tim@132:     }
tim@132: 
tim@132:     /**
tim@132:      * This Method provides an singleton Instance of this Class.
tim@132:      * @return an singleton Instance of this Class
tim@132:      */
tim@132:     public static ConnectionPoolFactory getInstance(){
tim@132:         if (instance == null){
tim@132:         	instance = new ConnectionPoolFactory();
tim@132:         }
tim@132:         return instance;
tim@132:     }
tim@132:     
tim@132:     
tim@132:     /**
tim@132:      * Getting the ConnectionPool
tim@132:      * @return the ConnectionPool
tim@132:      */
tim@132:     public ConnectionPool getConnectionPool(){
tim@132:         return this.connectionPool;
tim@132:     }
tim@132: 
tim@132:     /**
tim@132:      * Initializes the ConnectionPool.
tim@132:      * Should only be called once on system startup
tim@132:      * @param properties the Properties for the Individual Configuration of the ConnectionPool
tim@132:      */
tim@132:     public void initializeConnectionPool(Properties properties){
tim@132:         log.debug("ConnectionPoolFactory.initializeConnectionPool");
tim@132:         if (this.connectionPool == null){
tim@132:             //TODO: Hier könnte anhand eines Flags die Instanz des Connectionpools umgeschaltet werden.
tim@132:             this.connectionPool = new ArcSDEConnectionPool();
tim@132:             this.connectionPool.initialize(properties);
tim@132:         }else{
tim@132:             log.warn("ConnectionPool already initialized");
tim@132:         }	
tim@132:     }
tim@132: 
tim@132:     /**
tim@132:      * Checks if the ConnectionPool has already been initialized.
tim@132:      * @return true if the ConnectionPool is initialized.
tim@132:      */
tim@132:     public boolean isInitialized(){
tim@132:         return this.connectionPool != null;
tim@132:     }
tim@130: }