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Java Source Code / Java Documentation » Forum » nemesis forum » org.nemesis.forum 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


org.nemesis.forum.ForumThread

All known Subclasses:   org.nemesis.forum.impl.DbForumThread,  org.nemesis.forum.proxy.ForumThreadProxy,
ForumThread
public interface ForumThread (Code)
A ForumThread is a container for a hierarchy of ForumMessages.

Intimately tied to the concept of a ForumThread is a root message. A root message must be supplied when creating a thread. Subsequently, all further messages posted to the thread are children of the root message.

To get a handle on a ForumThread object, the getThread method should be called from a Forum object. To create a thread, createThread from a Forum object should be used. After creating a thread, you must attach it to a Forum by calling addThread from a Forum object. To delete a ForumThread, call the deleteThread method from the Forum object that the thread is attached to.

There are two options for navigating through the messages of a thread.

  • A TreeWalker -- this provides a hierarchical view of the messages in in the thread. For most skins, this will be the most appropriate navigation method.
  • An Iterator -- this provides a flat view of the messages in the thread. Since the message structure is not really flat, a field to sort by must be provided. This view of thread is useful for skins that want to provide functionality such as listing all the messages in the order they were created, etc.
Because a root message must be passed in when creating a thread, you must first create that message before creating the thread. The following code snippet demonstrates:
 //Assume that a forum object and user object are already defined.
 ForumMessage rootMessage = myForum.createMessage(myUser);
 rootMessage.setSubject("A subject");
 rootMessage.setBody("A body");
 ForumThread myThread = myForum.createThread(rootMessage);
 




Method Summary
public  voidaddMessage(Message parentMessage, Message newMessage)
     Adds a new message to the thread.
public  voiddeleteMessage(Message message)
     Deletes a message from the thread.
public  DategetCreationDate()
     Returns the Date that the thread was created.
public  ForumgetForum()
     Returns the parent Forum of the thread.
public  intgetID()
     Returns the unique id of the thread.
public  MessagegetMessage(int messageID)
     Returns a message from the thread based on its id.
public  intgetMessageCount()
     Returns the number of messages in the thread.
public  intgetMessageCount(boolean approved)
    
public  DategetModifiedDate()
     Returns the Date that the thread was last modified.
public  StringgetName()
     Returns the name of the thread (which is the subject of the root message).
public  MessagegetRootMessage()
     Returns the root message of a thread.
public  booleanhasPermission(int type)
     Returns true if the handle on the object has the permission specified. A list of possible permissions can be found in the ForumPermissions class.
public  booleanisApproved()
    
public  Iteratormessages()
     Return an Iterator for all the messages in a thread.
public  Iteratormessages(int startIndex, int numResults)
     Return an Iterator for all the messages in a thread.
public  Iteratormessages(boolean approved)
     Return an Iterator for all the messages in a thread.
public  Iteratormessages(boolean approved, int startIndex, int numResults)
     Return an Iterator for all the messages in a thread.
public  voidmoveMessage(Message message, ForumThread newThread, Message parentMessage)
     Moves a message from one thread to another.
public  voidsetApproved(boolean approved)
    
public  voidsetCreationDate(Date creationDate)
     Sets the creation date of the thread.
public  voidsetModifiedDate(Date modifiedDate)
     Sets the date the thread was last modified.
public  TreeWalkertreeWalker()
     Returns a TreeWalker for the entire thread.
public  TreeWalkertreeWalker(boolean approved)
     Returns a TreeWalker for the entire thread.



Method Detail
addMessage
public void addMessage(Message parentMessage, Message newMessage)(Code)
Adds a new message to the thread.
Parameters:
  parentMessage - some message in the thread that will be parent
Parameters:
  newMessage - message to add to the thread under the parent



deleteMessage
public void deleteMessage(Message message) throws UnauthorizedException(Code)
Deletes a message from the thread. Throws an IllegalArgumentException if the message is not in the thread. If the message is deleted, it should be entirely erased from the Forum system. Therefore, the behavior is unspecified if a message object is first removed from a thread and then added to another (this action not recommended).
throws:
  IllegalArgumentException - if the message does not belong to thethread.
throws:
  UnauthorizedException - if does not have ADMIN permissions.



getCreationDate
public Date getCreationDate()(Code)
Returns the Date that the thread was created.



getForum
public Forum getForum()(Code)
Returns the parent Forum of the thread.



getID
public int getID()(Code)
Returns the unique id of the thread.



getMessage
public Message getMessage(int messageID) throws ForumMessageNotFoundException(Code)
Returns a message from the thread based on its id.
Parameters:
  messageID - the ID of the message to get from the thread.



getMessageCount
public int getMessageCount()(Code)
Returns the number of messages in the thread. This includes the root message. So, to find the number of replies to the root message, subtract one from the answer of this method.



getMessageCount
public int getMessageCount(boolean approved)(Code)

author:
   dlaurent
author:
   Returns the number of messages in the forum.
author:
   approved or not



getModifiedDate
public Date getModifiedDate()(Code)
Returns the Date that the thread was last modified. In other words, the date of the most recent message in the thread.



getName
public String getName()(Code)
Returns the name of the thread (which is the subject of the root message). This is a convenience method that is equivalent to getRootMessage().getSubject(). the name of the thread, which is the subject of the root message.



getRootMessage
public Message getRootMessage()(Code)
Returns the root message of a thread. The root message is a special first message that is intimately tied to the thread for most forumViews. All other messages in the thread are children of the root message.



hasPermission
public boolean hasPermission(int type)(Code)
Returns true if the handle on the object has the permission specified. A list of possible permissions can be found in the ForumPermissions class. Certain methods of this class are restricted to certain permissions as specified in the method comments.
See Also:   ForumPermissions



isApproved
public boolean isApproved()(Code)
return true if the message is approved



messages
public Iterator messages()(Code)
Return an Iterator for all the messages in a thread.



messages
public Iterator messages(int startIndex, int numResults)(Code)
Return an Iterator for all the messages in a thread. The startIndex and numResults restrict the number of results returned, which is useful for multi-page HTML navigation.
Parameters:
  startIndex - the index you'd like to start the iterator at.
Parameters:
  numResuls - the max number of results iterator will hold.



messages
public Iterator messages(boolean approved)(Code)
Return an Iterator for all the messages in a thread.



messages
public Iterator messages(boolean approved, int startIndex, int numResults)(Code)
Return an Iterator for all the messages in a thread. The startIndex and numResults restrict the number of results returned, which is useful for multi-page HTML navigation.
Parameters:
  startIndex - the index you'd like to start the iterator at.
Parameters:
  numResuls - the max number of results iterator will hold.



moveMessage
public void moveMessage(Message message, ForumThread newThread, Message parentMessage) throws UnauthorizedException, IllegalArgumentException(Code)
Moves a message from one thread to another. The message will become a child of parentMessage in newThread For this to work, message must exist in the thread that this method is invoked on, parentMessage must be in newThread, and the user calling this method must have ADMIN permissions for the forum this method is invoked on and the forum that newThread belongs to.

The main purpose of this method is to allow admins to move non-topical messages into a more appropriate thread.
Parameters:
  message - the message to move to another thread.
Parameters:
  newThread - the thread to move the message to.
Parameters:
  parentMessage - the message under newThread that messageshould become a child of.
throws:
  UnauthorizedException - if does not have ADMIN permissions for thethis forum and the forum that newThread belongs to.
throws:
  IllegalArgumentException - if message does not belongto the thread that this method is invoked on, or parentMessage does not belong to newThread.




setApproved
public void setApproved(boolean approved) throws UnauthorizedException(Code)



setCreationDate
public void setCreationDate(Date creationDate) throws UnauthorizedException(Code)
Sets the creation date of the thread. In most cases, the creation date will default to when the thread was entered into the system. However, the creation date needs to be set manually when importing data. In other words, skin authors should ignore this method since it only intended for system maintenance.
Parameters:
  creationDate - the date the thread was created.
throws:
  UnauthorizedException - if does not have ADMIN permissions.



setModifiedDate
public void setModifiedDate(Date modifiedDate) throws UnauthorizedException(Code)
Sets the date the thread was last modified. In most cases, last modifed will default to when the thread data was last changed. However, the last modified date needs to be set manually when importing data. In other words, skin authors should ignore this method since it only intended for system maintenance.
Parameters:
  modifiedDate - the date the thread was modified.
throws:
  UnauthorizedException - if does not have ADMIN permissions.



treeWalker
public TreeWalker treeWalker()(Code)
Returns a TreeWalker for the entire thread. A TreeWalker is used to navigate through the tree of messages in a hierarchical manner.



treeWalker
public TreeWalker treeWalker(boolean approved)(Code)
Returns a TreeWalker for the entire thread. A TreeWalker is used to navigate through the tree of approved or not messages in a hierarchical manner.



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