org.sakaiproject.vm

Class VmServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

org.sakaiproject.vm.ComponentServlet

org.sakaiproject.vm.VmServlet

All Implemented Interfaces:

Serializable, Servlet, ServletConfig

Direct Known Subclasses:

VmServlet

public abstract class VmServlet
extends ComponentServlet

VmServlet is a Servlet that makes use of the Velocity Template Engine.

This extends our ComponentServlet, giving us also the ability to find registered service components.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.sakaiproject.vm.ComponentServlet

ATTR_PARAMS

Constructor Summary

Constructors

Constructor and Description
VmServlet()

Method Summary

Modifier and Type	Method and Description
protected ActionURL	getActionURL(HttpServletRequest request) Get a new ActionURL.
Object	getVmReference(String name, HttpServletRequest request) Access the object set in the velocity context for this name, if any.
protected void	includeVm(String template, HttpServletRequest request, HttpServletResponse response) Include the Velocity template, expanded with the current set of references
void	setVmReference(String name, Object value, HttpServletRequest request) Add a reference object to the velocity context by name - if it's not already defined
protected void	setVmStdRef(HttpServletRequest request, HttpServletResponse response) Add some standard references to the vm context.

Methods inherited from class org.sakaiproject.vm.ComponentServlet

sendParentRedirect, service, setNoCacheHeaders

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doGet, doHead, doOptions, doPost, doPut, doTrace, getLastModified, 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

Constructor Detail

VmServlet

public VmServlet()

Method Detail

getVmReference

public Object getVmReference(String name,
                             HttpServletRequest request)

Access the object set in the velocity context for this name, if any.

Parameters:

name - The reference name.

request - The request.

Returns:

The reference value object, or null if none

setVmReference

public void setVmReference(String name,
                           Object value,
                           HttpServletRequest request)

Add a reference object to the velocity context by name - if it's not already defined

Parameters:

name - The reference name.

value - The reference value object.

request - The request.

setVmStdRef

protected void setVmStdRef(HttpServletRequest request,
                           HttpServletResponse response)

Add some standard references to the vm context.

Parameters:

request - The request.

response - The response.

includeVm

protected void includeVm(String template,
                         HttpServletRequest request,
                         HttpServletResponse response)
                  throws ServletException

Include the Velocity template, expanded with the current set of references

Parameters:

template - The path, relative to the webapp context, of the template file

request - The render request.

response - The render response.

Throws:

PortletException - if something goes wrong.

ServletException

getActionURL

protected ActionURL getActionURL(HttpServletRequest request)

Get a new ActionURL.

Parameters:

req - The current request.

Returns:

A new ActionURL.