package de.swingbe.pg_lct_msg_client.controller; import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; import java.util.Objects; import java.util.logging.Level; import java.util.logging.Logger; public class PgConnection { private final String host; private final String port; private final String db; private final String url; private final String usr; private final String key; private Connection connection = null; public PgConnection(String host, String port, String db, String usr, String key) { this.host = Objects.requireNonNull(host, "host must not be null"); this.port = Objects.requireNonNull(port, "port must not be null"); this.db = Objects.requireNonNull(db, "db must not be null"); this.url = "jdbc:postgresql://" + host + ":" + port + "/" + db; this.usr = Objects.requireNonNull(usr, "usr must not be null"); this.key = Objects.requireNonNull(key, "key must not be null"); } public String getHost() { return host; } public String getPort() { return port; } public String getDb() { return db; } public String getUrl() { return url; } public String getUsr() { return usr; } public String getKey() { return key; } public Connection getConnection() { return connection; } public void setConnection() { System.out.println("setConnection() start..."); if (connection == null) { try { connection = DriverManager.getConnection(url, usr, key); } catch (SQLException e) { //TODO handle logging properly Logger lgr = Logger.getLogger(PgConnection.class.getName()); lgr.log(Level.SEVERE, e.getMessage(), e); } } System.out.println("setConnection() done."); } }