Java Doc for BasePO.java in  » J2EE » Enhydra-Demos » transactionsDiscRack » presentation » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » Enhydra Demos » transactionsDiscRack.presentation   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    transactionsDiscRack.presentation.BasePO All known Subclasses:   transactionsDiscRack.presentation.personMgmt.Register,  transactionsDiscRack.presentation.personMgmt.Login,  transactionsDiscRack.presentation.discMgmt.Edit,  transactionsDiscRack.presentation.discMgmt.DiscCatalog, BasePO abstract public class BasePO implements HttpPresentation(Code) This is the parent Presentaion object. All presentation objects should extend this class. The run method looks for an event parameter and then calls handle. If the "event" Parameter is not defined then the handleDefault() method is called in your child class. Field Summary protected static  String DISC_CATALOG_PAGE      protected static  String LOGIN_PAGE      final protected static  String USER_KEY      protected  HttpPresentationComms myComms      protected  TransactionsDiscRackSessionData mySessionData      protected  DBTransaction transaction      Method Summary protected  void checkForUserLogin()      protected  void commitTransaction()      public  TransactionsDiscRack getApplication()      Returns the application object associated with the current request. public  HttpPresentationComms getComms()      public  XMLObject getPageContentForEvent(String event)      If an event parameter is defined then this invokes the method that handles that event. public  TransactionsDiscRackSessionData getSessionData()      public  String getUserHandle()      abstract public  XMLObject handleDefault()      This is the procedure that is called if there is no "event" HTTP parameter found. public  void handleEvent(HttpPresentationComms comms)      protected  void initSessionData(HttpPresentationComms comms)      protected  void initTransaction()      abstract protected  boolean loggedInUserRequired()      This method should be implemented in the subclass so that it returns true if this particular request requires the user to be logged in, otherwise false. public  void removeUserFromSession()      public  void run(HttpPresentationComms comms)      This implements the run method in HttpPresentation. public  void setUser(Person thePerson)      public static  void writeDebugMsg(String msg)      Field Detail DISC_CATALOG_PAGE protected static String DISC_CATALOG_PAGE(Code) LOGIN_PAGE protected static String LOGIN_PAGE(Code) USER_KEY final protected static String USER_KEY(Code) myComms protected HttpPresentationComms myComms(Code) Saved input and output context, and session data mySessionData protected TransactionsDiscRackSessionData mySessionData(Code) Session Data object reference transaction protected DBTransaction transaction(Code) Transaction object reference Method Detail checkForUserLogin protected void checkForUserLogin() throws ClientPageRedirectException, TransactionsDiscRackPresentationException(Code) Checks the session data for a User, if not there then redirects to the login page commitTransaction protected void commitTransaction() throws TransactionsDiscRackPresentationException(Code) Method commits DB transation instance getApplication public TransactionsDiscRack getApplication()(Code) Returns the application object associated with the current request. the application object. getComms public HttpPresentationComms getComms()(Code) Gets HttpPresentation object The saved comms objects to whichever subclass needs it getPageContentForEvent public XMLObject getPageContentForEvent(String event) throws Exception(Code) If an event parameter is defined then this invokes the method that handles that event. Parameters:   event - the incoming event name exception:   Exception - getSessionData public TransactionsDiscRackSessionData getSessionData()(Code) Gets the session data session data getUserHandle public String getUserHandle()(Code) Gets the user from the session the person object in the session handleDefault abstract public XMLObject handleDefault() throws HttpPresentationException(Code) This is the procedure that is called if there is no "event" HTTP parameter found. It must be overriden by the subclass to do default processing or error checking/handling. String The String representation of the HTML or (other format) ofthe document to be displayed. This method would need to bechanged if you wanted to return binary data as well. It returns aString for simplicity right now. handleEvent public void handleEvent(HttpPresentationComms comms) throws Exception(Code) Method to call the proper method for the incoming event Parameters:   comms - HttpPresentationComms exception:   Exception - initSessionData protected void initSessionData(HttpPresentationComms comms) throws TransactionsDiscRackPresentationException(Code) Method to get or create the AgSessionData object from the user session This object is saved in the EbrokerPresentation object Parameters:   comms - HttpPresentationComms exception:   Exception - initTransaction protected void initTransaction() throws TransactionsDiscRackPresentationException(Code) Method initializes DB transation instance loggedInUserRequired abstract protected boolean loggedInUserRequired()(Code) This method should be implemented in the subclass so that it returns true if this particular request requires the user to be logged in, otherwise false. removeUserFromSession public void removeUserFromSession()(Code) Method to remove the current user from the session run public void run(HttpPresentationComms comms) throws Exception(Code) This implements the run method in HttpPresentation. Parameters:   comms - HttpPresentationComms exception:   Exception - setUser public void setUser(Person thePerson) throws TransactionsDiscRackPresentationException(Code) Sets the user into the session Parameters:   thePerson - the person to be set in the session exception:   DiscRackPresentationException - writeDebugMsg public static void writeDebugMsg(String msg)(Code) Method to write a debugging message to the debug log channel when the DEBUG flag is turned on Parameters:   msg - The message to write to the DEBUG log channel Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)