Java Doc for PersistChanGrpMgr.java in  » RSS-RDF » informa » de » nava » informa » utils » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » RSS RDF » informa » de.nava.informa.utils   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    de.nava.informa.utils.PersistChanGrpMgr PersistChanGrpMgr public class PersistChanGrpMgr (Code) PersistChanGrpMgr - Controls and Manages a single Hibernate based Informa ChannelGroup. Provides for threaded Updating of the Channel Group, persistence management, session management etc. N O T T H R E A D S A F E Field Summary  int acceptNrErrors       int taskPeriod       int taskStartDelay      Constructor Summary public   PersistChanGrpMgr(SessionHandler handler, boolean debug)      Constructor. Parameters:   handler - - SessionHandler to use. Method Summary public synchronized  void activate()      public  Channel addChannel(String url)      Add a channel to this Persisten Channel Group. public  Iterator channelIterator()      Create an iterator to iterate across all the channels in this group. public  ChannelGroup createGroup(String name)      Called to create a Group. public synchronized  void deActivate()      Interrupts the update task and return immediately. public synchronized  void deActivate(boolean waitForFinish)      Interrupts the update task and return immediately. public  boolean deleteChannel(Channel channel)      Delete specified channel from this PersistChanGrpMgr. public  void deleteGroup()      Deletes persistent group. public  int deleteItemFromChannel(Channel channel, Item item)      public  int getAcceptNrErrors()      public  ChannelBuilder getBuilder()      public  ChannelGroup getChannelGroup()      public  SessionHandler getHandler()      public  int getItemCount(Channel channel)      public  int getPollingCounter()      public  boolean hasChannel(Channel achannel)      public  void incrPollingCounter()      Bump up polling counter by one. public  boolean isActivated()      Simply return whether we are currently activated (that is, running the tasks that download and process RSS. public  void moveChannelTo(Channel channel, PersistChanGrpMgr destGrp)      public  void notifyChannelRetrieved(Channel chan)      Send notification that specified channel was retrieved. public  void notifyChannels()      public  void notifyChannelsAndItems(Channel channel)      notifyChannelsAndItems - Notify both item and channel listeners for a channel and all its items. public  void notifyChannelsAndItems()      notifyChannelsAndItems - Call notifyChannelAndItems(channels) across all channels in this PersistentChanGrpMgr. public  void notifyItemAdded(Item newItem)      Send notification that specified item was retrieved. public  void notifyItems(Channel channelHandle)      Send notifications for all the items of this channel that they have been added. public  void notifyPolling(boolean isPolling)      Notify that the PersistChanGrpMgrTask is currently in the middle of its 'run()' method. public  void setGlobalObserver(PersistChanGrpMgrObserverIF obser)      Setup the one and only Global observer. public  void setParams(int startDel, int period, int acceptErr)      Change parameters of how this PersistChanGrpMgr works. public  String toString()      Field Detail acceptNrErrors int acceptNrErrors(Code) taskPeriod int taskPeriod(Code) taskStartDelay int taskStartDelay(Code) Constructor Detail PersistChanGrpMgr public PersistChanGrpMgr(SessionHandler handler, boolean debug)(Code) Constructor. Parameters:   handler - - SessionHandler to use. This needs to have been built by caller. Parameters:   debug - - - true will run this in debug mode, which basically means that threads are runwith no delays thereby revealing threading bugs. Method Detail activate public synchronized void activate()(Code) activate - - addChannel public Channel addChannel(String url)(Code) Add a channel to this Persisten Channel Group. If Channel already exists then just add it, if it doesn't then create it and add it. Parameters:   url - the url of the rss feed Channel so created or located channelIterator public Iterator channelIterator()(Code) Create an iterator to iterate across all the channels in this group. the iterator createGroup public ChannelGroup createGroup(String name)(Code) Called to create a Group. Parameters:   name - - Text name of the group - Channel Group being managed by this PersistChanGrpMgr deActivate public synchronized void deActivate()(Code) Interrupts the update task and return immediately. Do not waits for task to stop. deActivate public synchronized void deActivate(boolean waitForFinish)(Code) Interrupts the update task and return immediately. Waits for task to finish if waitForFinish argument set. Parameters:   waitForFinish - TRUE to wait until task actually finishes. deleteChannel public boolean deleteChannel(Channel channel)(Code) Delete specified channel from this PersistChanGrpMgr. Status indicates whether Channel was previously part of this group. Parameters:   channel - - Channel being removed from the Group. true if channel was deleted, false if channel was not a member to begin with deleteGroup public void deleteGroup()(Code) Deletes persistent group. deleteItemFromChannel public int deleteItemFromChannel(Channel channel, Item item)(Code) Delete specified item from specified Channel Parameters:   channel - - Channel to delete from Parameters:   item - - Item to delete from that channel number of items left in the channel AFTER the deletion. getAcceptNrErrors public int getAcceptNrErrors()(Code) acceptable number of errors getBuilder public ChannelBuilder getBuilder()(Code) Get currently associated ChannelBuilder the current cb getChannelGroup public ChannelGroup getChannelGroup()(Code) Get currently assocaited ChannelGrouo the cg getHandler public SessionHandler getHandler()(Code) Get currently assocaited SessionHandler the sh getItemCount public int getItemCount(Channel channel)(Code) Return number of Items currently in specified Channel Parameters:   channel - Channel to query number of Items getPollingCounter public int getPollingCounter()(Code) Return how many times the task has polled the feed since this PersistChanGrp was built polling count so far hasChannel public boolean hasChannel(Channel achannel)(Code) Check if this PersistChanGrp has specified CHannel as a member already Parameters:   achannel - - candidate channel to check TRUE = yes incrPollingCounter public void incrPollingCounter()(Code) Bump up polling counter by one. isActivated public boolean isActivated()(Code) Simply return whether we are currently activated (that is, running the tasks that download and process RSS. Will also return true if the PersistChanGrpMgrTask is still in the middle of finishing. true = activated moveChannelTo public void moveChannelTo(Channel channel, PersistChanGrpMgr destGrp)(Code) Move a Channel from this PersistentChannelGroup to a different one Parameters:   channel - channel in this PersistentChannelGroup that is being moved. Parameters:   destGrp - destination where the Channel is going to notifyChannelRetrieved public void notifyChannelRetrieved(Channel chan)(Code) Send notification that specified channel was retrieved. Parameters:   chan - - notifyChannels public void notifyChannels()(Code) Send notifications about all Channels in this group (but not their items) - notifyChannelsAndItems public void notifyChannelsAndItems(Channel channel)(Code) notifyChannelsAndItems - Notify both item and channel listeners for a channel and all its items. This is useful if the client wants to treat a Channel that was recently read in by hibernate in a consistent way with listeners. Parameters:   channel - - Relevant channel. notifyChannelsAndItems public void notifyChannelsAndItems()(Code) notifyChannelsAndItems - Call notifyChannelAndItems(channels) across all channels in this PersistentChanGrpMgr. notifyItemAdded public void notifyItemAdded(Item newItem)(Code) Send notification that specified item was retrieved. Parameters:   newItem - - notifyItems public void notifyItems(Channel channelHandle)(Code) Send notifications for all the items of this channel that they have been added. Parameters:   channelHandle - - notifyPolling public void notifyPolling(boolean isPolling)(Code) Notify that the PersistChanGrpMgrTask is currently in the middle of its 'run()' method. Parameters:   isPolling - true - start polling, false- end setGlobalObserver public void setGlobalObserver(PersistChanGrpMgrObserverIF obser)(Code) Setup the one and only Global observer. Note this is not an observer chain, but just a single one. Parameters:   obser - Observer to register setParams public void setParams(int startDel, int period, int acceptErr)(Code) Change parameters of how this PersistChanGrpMgr works. Only allowed when this PersistChanGrp is inactive. Parameters:   startDel - ms before starting (-1 means don't change.) Parameters:   period - ms between iterations (-1 means don't change.) Parameters:   acceptErr - number of errors before putting a channel offline (-1 means don't change) toString public String toString()(Code) Return nicely formatted string for this object - the string 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)