com.xmlserv.app.images
Class ImageGet

java.lang.Object
  |
  +--com.xmlserv.main.XMLServBackendImpl
        |
        +--com.xmlserv.app.AppBase
              |
              +--com.xmlserv.app.images.ImageGet

All Implemented Interfaces:

XMLServBackend

Direct Known Subclasses:

ImageDownload, ImagePreview, ImageShow

public abstract class ImageGet

extends AppBase

Base class for all Image downlaod realted classes (ImagePreview, ImageDownload etc.). The abstract methods are used to determine the filename and the mimetype to send back.

Constructor Summary

ImageGet()

Method Summary

void	init() Initialize object.
javax.xml.transform.Source	process(javax.servlet.ServletContext context, javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res, SecurityManager securitymanager) Main processing method.
org.jdom.Document	process(javax.servlet.ServletContext context, javax.servlet.http.HttpServletRequest req, SecurityManager securitymanager) This is the method to override in subclasses.

Methods inherited from class com.xmlserv.app.AppBase

checkoutConn, destroy, errorPage, errorPage, getUrl, newElement, redirect, redirect, returnConn

Methods inherited from class com.xmlserv.main.XMLServBackendImpl

addParam, getParam, getReqCount, getStatus

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ImageGet

public ImageGet()

Method Detail

init

public void init()
          throws javax.servlet.ServletException

Initialize object.

Overrides:

init in class AppBase

Following copied from class: com.xmlserv.app.AppBase

Throws:

javax.servlet.ServletException - On any error.

See Also:

PGConnectionPool

process

public org.jdom.Document process(javax.servlet.ServletContext context,
                                 javax.servlet.http.HttpServletRequest req,
                                 SecurityManager securitymanager)
                          throws XMLServException,
                                 javax.servlet.ServletException,
                                 java.io.IOException

Description copied from class: XMLServBackendImpl

This is the method to override in subclasses.

Overrides:

process in class AppBase

Following copied from class: com.xmlserv.main.XMLServBackendImpl

Parameters:

context - The servlet context.

req - The HTTP request.

securitymanager - The SecurityManager instance associated with this object.

Returns:

An XML document.

Throws:

XMLServException - Indicates an error condition in the business logic.

javax.servlet.ServletException - A generic failure.

java.io.IOException - Any I/O error condition.

process

public javax.xml.transform.Source process(javax.servlet.ServletContext context,
                                          javax.servlet.http.HttpServletRequest req,
                                          javax.servlet.http.HttpServletResponse res,
                                          SecurityManager securitymanager)
                                   throws XMLServException,
                                          javax.servlet.ServletException,
                                          java.io.IOException

Main processing method.

Overrides:

process in class AppBase

See Also:

XMLServBackendImpl.process(javax.servlet.ServletContext, javax.servlet.http.HttpServletRequest, com.xmlserv.security.SecurityManager)