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## com.compoze.discussion
Class TopicFileAttachmentServlet

    java.lang.Object
      |
      +--javax.servlet.GenericServlet
            |
            +--javax.servlet.http.HttpServlet
                  |
                  +--com.compoze.discussion.TopicFileAttachmentServlet

All Implemented Interfaces:
  java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class TopicFileAttachmentServlet
extends javax.servlet.http.HttpServlet

This class is a servlet that writes the file attachment. The servlet expects that an Http session attribute called `DISCUSSION_SESSION_ATTRIBUTE` contains the `DiscussionSession` object that is the discussion session.

The servlet also expects that three request parameters be set: the `TOPIC_ID` parameter must contain the ID of the topic which has the file attachment to serve; the `FILE_ATTACHMENT_ID` parameter must contain the ID of the file attachment to serve.

See Also:
  Serialized Form

Field Summary
`static java.lang.String` | `DISCUSSION_SESSION_ATTRIBUTE` The session property name holding the `DiscussionSession` object.
`static java.lang.String` | `FILE_ATTACHMENT_ID` The file attachment id request parameter.
`static java.lang.String` | `TOPIC_ID` The topic id request parameter.

Constructor Summary
`TopicFileAttachmentServlet()`

Method Summary
`void` | `doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)`
`protected FileAttachment` | `getFileAttachment(javax.servlet.http.HttpServletRequest request)` Gets the file attachment.

Methods inherited from class javax.servlet.http.HttpServlet
`doDelete, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service, service`

Methods inherited from class javax.servlet.GenericServlet
`destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### TOPIC_ID

    public static final java.lang.String TOPIC_ID

  The topic id request parameter.

### FILE_ATTACHMENT_ID

    public static final java.lang.String FILE_ATTACHMENT_ID

  The file attachment id request parameter.

### DISCUSSION_SESSION_ATTRIBUTE

    public static final java.lang.String DISCUSSION_SESSION_ATTRIBUTE

  The session property name holding the `DiscussionSession` object.

Constructor Detail

### TopicFileAttachmentServlet

    public TopicFileAttachmentServlet()

Method Detail

### doGet

    public void doGet(javax.servlet.http.HttpServletRequest request,
                      javax.servlet.http.HttpServletResponse response)
               throws javax.servlet.ServletException,
                      java.io.IOException

  Overrides:
    `doGet` in class `javax.servlet.http.HttpServlet`

### getFileAttachment

    protected FileAttachment getFileAttachment(javax.servlet.http.HttpServletRequest request)

  Gets the file attachment.
  Parameters:
    `request` - the http servlet request
  Returns:
    the file attachment or `null` if not found

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Copyright ©1999-2003 Compoze Software, Inc. All rights reserved.