/* * * Copyright (c) 1999 - 2011 my-Channels Ltd * Copyright (c) 2012 - 2017 Software AG, Darmstadt, Germany and/or Software AG USA Inc., Reston, VA, USA, and/or its subsidiaries and/or its affiliates and/or their licensors. * * Use, reproduction, transfer, publication or disclosure is prohibited except as specifically provided for in your License Agreement with Software AG. * */ package com.pcbsys.nirvana.apps; import com.pcbsys.nirvana.client.*; /** * Gets the last EID for a channel specified */ public class getLastEID extends nSampleApp { private static getLastEID mySelf = null; /** * This method demonstrates the Nirvana API calls necessary to get the * last eid for a channel. * It is called after all command line arguments have been received and * validated * * @param realmDetails a String[] containing the possible RNAME values * @param cname the channel name to get the last eid for */ private void doit(String[] realmDetails, String cname) { mySelf.constructSession(realmDetails); //Gets the last EID for the specified channel try { nChannelAttributes nca = new nChannelAttributes(); nca.setName(cname); nChannel chan = mySession.findChannel(nca); System.out.println("Last EID: " + chan.getLastEID()); } catch (nSessionPausedException sp) { } catch (nIllegalArgumentException ex) { } //Handle errors catch (nChannelNotFoundException cnfe) { System.out.println("The channel specified could not be found."); System.out.println("Please ensure that the channel exists in the REALM you connect to."); cnfe.printStackTrace(); System.exit(1); } catch (nSecurityException se) { System.out.println("Insufficient permissions for the requested operation."); System.out.println("Please check the ACL settings on the server."); se.printStackTrace(); System.exit(1); } catch (nSessionNotConnectedException snce) { System.out.println("The session object used is not physically connected to the Nirvana realm."); System.out.println("Please ensure the realm is up and check your RNAME value."); snce.printStackTrace(); System.exit(1); } catch (nUnexpectedResponseException ure) { System.out.println("The Nirvana REALM has returned an unexpected response."); System.out.println("Please ensure the Nirvana REALM and client API used are compatible."); ure.printStackTrace(); System.exit(1); } catch (nUnknownRemoteRealmException urre) { System.out.println("The channel specified resided in a remote realm which could not be found."); System.out.println("Please ensure the channel name specified is correct."); urre.printStackTrace(); System.exit(1); } catch (nRequestTimedOutException rtoe) { System.out.println("The requested operation has timed out waiting for a response from the REALM."); System.out.println("If this is a very busy REALM ask your administrator to increase the client timeout values."); rtoe.printStackTrace(); System.exit(1); } catch (nIllegalChannelMode cm) { System.out.println("The requested channel is a queue and cannot be accessed like a channel"); System.out.println("Use the queue API's instead"); cm.printStackTrace(); System.exit(1); } //Close the session we opened try { nSessionFactory.close(mySession); } catch (Exception ex) { } //Close any other sessions within this JVM so that we can exit nSessionFactory.shutdown(); } protected void processArgs(String[] args) { switch (args.length) { case 1: if (args[0].equals("-?")) { Usage(); UsageEnv(); } System.getProperties().put("CHANNAME", args[0]); break; } } public static void main(String[] args) { //Create an instance for this class mySelf = new getLastEID(); //Process command line arguments mySelf.processArgs(args); //Process Environment Variables nSampleApp.processEnvironmentVariables(); //Check the channel name specified String channelName = null; if (System.getProperty("CHANNAME") != null) { channelName = System.getProperty("CHANNAME"); } else { Usage(); System.exit(1); } //Check the local realm details int idx = 0; String RNAME = null; if (System.getProperty("RNAME") != null) { RNAME = System.getProperty("RNAME"); } else { Usage(); System.exit(1); } //Process the local REALM RNAME details String[] rproperties = new String[4]; rproperties = parseRealmProperties(RNAME); //get the last eid for the channel specified mySelf.doit(rproperties, channelName); } /** * Prints the usage message for this class */ private static void Usage() { System.out.println("Usage ...\n"); System.out.println("ngetlasteid \n"); System.out.println(" \n"); System.out.println(" - Channel name parameter to get the last EID for"); System.out.println("\n\nNote: -? provides help on environment variables \n"); } } // End of getLastEID Class