List of usage examples for java.lang InstantiationException InstantiationException
public InstantiationException(String s)
From source file:org.apache.tiles.ComponentDefinition.java
/** * Create a controller from specified classname * @param classname Controller classname. * @return org.apache.tiles.Controller//from w w w.j a v a2s.c om * @throws InstantiationException if an error occur while instanciating Controller : * (classname can't be instanciated, Illegal access with instanciated class, * Error while instanciating class, classname can't be instanciated. */ public static Controller createControllerFromClassname(String classname) throws InstantiationException { try { Class requestedClass = TilesUtil.applicationClass(classname); Object instance = requestedClass.newInstance(); if (log.isDebugEnabled()) { log.debug("Controller created : " + instance); } return (Controller) instance; } catch (java.lang.ClassNotFoundException ex) { throw new InstantiationException("Error - Class not found :" + ex.getMessage()); } catch (java.lang.IllegalAccessException ex) { throw new InstantiationException("Error - Illegal class access :" + ex.getMessage()); } catch (java.lang.InstantiationException ex) { throw ex; } catch (java.lang.ClassCastException ex) { throw new InstantiationException( "Controller of class '" + classname + "' should implements 'Controller' or extends 'Action'"); } }
From source file:org.apache.struts.tiles.ComponentDefinition.java
/** * Create a controller from specified classname * @param classname Controller classname. * @return org.apache.struts.tiles.Controller * @throws InstantiationException if an error occur while instanciating Controller : * (classname can't be instanciated, Illegal access with instanciated class, * Error while instanciating class, classname can't be instanciated. *///w ww .j av a2 s. c om public static Controller createControllerFromClassname(String classname) throws InstantiationException { try { Class requestedClass = RequestUtils.applicationClass(classname); Object instance = requestedClass.newInstance(); if (log.isDebugEnabled()) { log.debug("Controller created : " + instance); } return (Controller) instance; } catch (java.lang.ClassNotFoundException ex) { throw new InstantiationException("Error - Class not found :" + ex.getMessage()); } catch (java.lang.IllegalAccessException ex) { throw new InstantiationException("Error - Illegal class access :" + ex.getMessage()); } catch (java.lang.InstantiationException ex) { throw ex; } catch (java.lang.ClassCastException ex) { throw new InstantiationException( "Controller of class '" + classname + "' should implements 'Controller' or extends 'Action'"); } }
From source file:org.xmlactions.action.config.ExecContext.java
public BaseAction getActionClass(String actionMapName, String actionKey) throws ClassNotFoundException, InstantiationException, IllegalAccessException { BaseAction action = null;//w w w. j a v a2s. c o m String className = getAction(actionMapName, actionKey); if (StringUtils.isNotEmpty(className)) { Class<?> clas = ClassUtils.getClass(className); Object bean = clas.newInstance(); if (!(bean instanceof BaseAction)) { throw new InstantiationException("class [" + bean.getClass().getName() + " must extend [" + BaseAction.class.getName() + "]"); } action = (BaseAction) bean; } else { log.info("no action class found for [" + actionMapName + "][" + actionKey + "]"); // throw new IllegalArgumentException("no action class found for [" + actionMapName + "][" + actionKey + "]"); } return action; }
From source file:gda.device.scannable.ScannableMotionBase.java
/** * This method should be called at the end of an inheriting class's constructor. * <p>// w w w .j av a 2 s. c o m * It will do things such as validate that the class instantiated was valid, register the scannable with other * objects and generally complete the instantiation of the object. * * @throws InstantiationException */ protected void completeInstantiation() throws InstantiationException { // check that size of arrays match if (inputNames.length + extraNames.length != outputFormat.length) { // if outputFormat too short then simply extend it, else throw an // error as one of the other arrays must be wrong if (outputFormat.length < inputNames.length + extraNames.length) { logger.warn("Error while instantiating " + getName() + ". Extending outputFormat array to match sum of inputNames and outputNames."); // extend array String formatString = outputFormat[0]; int length = inputNames.length + extraNames.length; outputFormat = new String[length]; for (int i = 0; i < length; i++) { outputFormat[i] = formatString; } } else { // throw an error throw new InstantiationException("Error while instantiating " + getName() + ". Sum of lengths of inputNames and outputNames should match with outFormat array length."); } } }
From source file:axiom.framework.core.Application.java
/** * Get the application ready to run, initializing the evaluators and type manager. * * @param ignoreDirs comma separated list of directory names to ignore *///ww w. ja v a 2 s . c om public synchronized void init(String ignoreDirs) throws DatabaseException, IllegalAccessException, InstantiationException, ClassNotFoundException { running = true; // create and init type mananger typemgr = new TypeManager(this, ignoreDirs); // set the context classloader. Note that this must be done before // using the logging framework so that a new LogFactory gets created // for this app. Thread.currentThread().setContextClassLoader(typemgr.getClassLoader()); try { typemgr.createPrototypes(); } catch (Exception x) { logError("Error creating prototypes", x); } if (Server.getServer() != null) { Vector<AxiomExtension> extensions = Server.getServer().getExtensions(); for (int i = 0; i < extensions.size(); i++) { AxiomExtension ext = (AxiomExtension) extensions.get(i); try { ext.applicationStarted(this); } catch (ConfigurationException e) { logEvent("couldn't init extension " + ext.getName() + ": " + e.toString()); } } } // create and init evaluator/thread lists freeThreads = new Stack<RequestEvaluator>(); allThreads = new Vector<RequestEvaluator>(); // preallocate minThreads request evaluators int minThreads = 0; try { minThreads = Integer.parseInt(props.getProperty("minThreads")); } catch (Exception ignore) { try { minThreads = Integer.parseInt(props.getProperty("maxThreads")); minThreads /= 4; } catch (Exception ignoreagain) { minThreads = 0; } } if (minThreads > 0) { logEvent("Starting " + minThreads + " evaluator(s) for " + name); } for (int i = 0; i < minThreads; i++) { RequestEvaluator ev = new RequestEvaluator(this); ev.initScriptingEngine(); freeThreads.push(ev); allThreads.addElement(ev); } activeRequests = new Hashtable<RequestTrans, RequestEvaluator>(); activeCronJobs = new Hashtable<String, CronRunner>(); customCronJobs = new Hashtable<String, CronJob>(); // read in root id, root prototype, user prototype rootId = props.getProperty("rootid", "0"); String rootPrototype = props.getProperty("rootprototype", "root"); String userPrototype = props.getProperty("userprototype", "user"); rootMapping = getDbMapping(rootPrototype); if (rootMapping == null) throw new RuntimeException("rootPrototype does not exist: " + rootPrototype); userMapping = getDbMapping(userPrototype); if (userMapping == null) throw new RuntimeException("userPrototype does not exist: " + userPrototype); // The whole user/userroot handling is basically old // ugly obsolete crap. Don't bother. ResourceProperties p = new ResourceProperties(); String usernameField = (userMapping != null) ? userMapping.getNameField() : null; if (usernameField == null) { usernameField = "name"; } p.put("_children", ""); p.put("_children.type", "collection(" + userPrototype + ")"); p.put("_children.accessname", usernameField); p.put("roles", ""); p.put("roles.type", "String"); p.put("roles.multivalue", "true"); userRootMapping = new DbMapping(this, "__userroot__", p); userRootMapping.update(); // add the session mappings for persisting sessions in the object database String sessionPrototype = props.getProperty("sessionprototype", "session"); sessionMapping = getDbMapping(sessionPrototype); if (sessionMapping == null) throw new RuntimeException("sessionPrototype does not exist: " + sessionPrototype); p = new ResourceProperties(); String nameField = (sessionMapping != null) ? sessionMapping.getNameField() : null; if (nameField == null) { nameField = "name"; } p.put("_children", ""); p.put("_children.type", "collection(" + sessionPrototype + ")"); p.put("_children.accessname", nameField); sessionRootMapping = new DbMapping(this, "__sessionroot__", p); sessionRootMapping.update(); // create/setup the path indexer for this application try { pathIndexer = new PathIndexer(this); } catch (Exception ex) { ex.printStackTrace(); throw new RuntimeException("Could not create the path indexer for the application " + this.name); } String cluster = this.getProperty("cluster", "false"); if ("true".equalsIgnoreCase(cluster)) { try { this.clusterComm = new ClusterCommunicator(this); } catch (Exception ex) { ex.printStackTrace(); throw new InstantiationException("Could not initiate the jgroups cluster for " + this.name); } this.clusterHost = this.getProperty("cluster.host"); if (this.clusterHost == null) { throw new InstantiationException("ERROR: cluster.host not specified in app.properties"); } } // create the node manager nmgr = new NodeManager(this); nmgr.init(dbDir.getAbsoluteFile(), props); this.executionCache = new ExecutionCache(this, "rhino"); this.talCache = new ExecutionCache(this, "tal"); // create and init session manager String sessionMgrImpl = props.getProperty("sessionManagerImpl", "axiom.framework.core.SessionManager"); sessionMgr = (SessionManager) Class.forName(sessionMgrImpl).newInstance(); logEvent("Using session manager class " + sessionMgrImpl); sessionMgr.init(this); // read the sessions if wanted if ("true".equalsIgnoreCase(getProperty("persistentSessions"))) { RequestEvaluator ev = getEvaluator(); try { ev.initScriptingEngine(); sessionMgr.loadSessionData(null, ev.scriptingEngine); } finally { releaseEvaluator(ev); } } // reset the classloader to the parent/system/server classloader. Thread.currentThread().setContextClassLoader(typemgr.getClassLoader().getParent()); try { this.qbean = new QueryBean(this, "query-filter-" + getName()); } catch (Exception ex) { ex.printStackTrace(); throw new InstantiationException("Could not instantiate the QueryBean for " + this.name); } Enumeration e = this.dbProps.keys(); while (e.hasMoreElements()) { String key = (String) e.nextElement(); if (key.indexOf(".type") != -1) { String value = this.dbProps.getProperty(key); if (!extDbTypes.contains(value) && !value.equalsIgnoreCase("relational")) { extDbTypes.add(value); } } } try { updateResources(); } catch (IOException ex) { ex.printStackTrace(); } }
From source file:org.jaffa.soa.dataaccess.DataTransformer.java
private static Object newGraphDataObject(Class clazz) throws InstantiationException { try {/* w w w . ja v a 2 s .c o m*/ Constructor c = clazz.getConstructor(new Class[] {}); if (c == null) throw new InstantiationException("No zero argument construtor found"); Object dao = c.newInstance((Object[]) null); if (log.isDebugEnabled()) log.debug("Created Object : " + dao); return dao; } catch (InstantiationException e) { throw e; } catch (Exception e) { log.error("Can't create Graph Data Object - " + e.getMessage(), e); throw new InstantiationException(e.getMessage()); } }
From source file:com.redhat.rhn.manager.system.SystemManager.java
/** * Creates the client certificate (systemid) file for the given Server. * @param server Server whose client certificate is sought. * @return the client certificate (systemid) file for the given Server. * @throws InstantiationException thrown if error occurs creating the * client certificate.//from w ww .j av a 2 s. co m */ public static ClientCertificate createClientCertificate(Server server) throws InstantiationException { ClientCertificate cert = new ClientCertificate(); // add members to this cert User user = UserManager.findResponsibleUser(server.getOrg(), RoleFactory.ORG_ADMIN); cert.addMember("username", user.getLogin()); cert.addMember("os_release", server.getRelease()); cert.addMember("operating_system", server.getOs()); cert.addMember("architecture", server.getServerArch().getLabel()); cert.addMember("system_id", "ID-" + server.getId().toString()); cert.addMember("type", "REAL"); String[] fields = { "system_id", "os_release", "operating_system", "architecture", "username", "type" }; cert.addMember("fields", fields); try { //Could throw InvalidCertificateException in any fields are invalid cert.addMember("checksum", cert.genSignature(server.getSecret())); } catch (InvalidCertificateException e) { throw new InstantiationException("Couldn't generate signature"); } return cert; }