Java Doc for ServerContext.java in  » Ajax » dwr » org » directwebremoting » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Ajax » dwr » org.directwebremoting 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


org.directwebremoting.ServerContext

All known Subclasses:   org.directwebremoting.impl.DefaultServerContext,
ServerContext
public interface ServerContext (Code)

author:
   Joe Walker [joe at getahead dot ltd dot uk]




Method Summary
 Collection<ScriptSession>getAllScriptSessions()
     Get a list of all the ScriptSessions known to this server at the given time. Note that the list of known sessions is continually changing so it is possible that the list will be out of date by the time it is used.
 ContainergetContainer()
     Accessor for the IoC container.
 StringgetContextPath()
     Returns the portion of the request URI that indicates the context of the request.

Annoyingly you can't get to this from the ServletContext so you need to cache the value from a recent HttpServletRequest.

The context path always comes first in a request URI.

 ScriptSessiongetScriptSessionById(String sessionId)
     You can request access to a specific ScriptSession if you know it's ID.

Take care with this method because it allows actions from one browser to affect another which could be a bad thing.

 Collection<ScriptSession>getScriptSessionsByPage(String url)
     Get a list of all ScriptSessions on a given page. Note that the list of known sessions is continually changing so it is possible that the list will be out of date by the time it is used.
 ServletConfiggetServletConfig()
     Accessor for the servlet config.
 ServletContextgetServletContext()
     Returns the ServletContext to which this session belongs.
 StringgetVersion()
     Fish the version number out of the dwr.properties file.



Method Detail
getAllScriptSessions
Collection<ScriptSession> getAllScriptSessions()(Code)
Get a list of all the ScriptSessions known to this server at the given time. Note that the list of known sessions is continually changing so it is possible that the list will be out of date by the time it is used. For this reason you should check that getScriptSession(String id) returns something non null. A collection of all the ScriptSessions.



getContainer
Container getContainer()(Code)
Accessor for the IoC container. The IoC container that created the interface implementations.



getContextPath
String getContextPath()(Code)
Returns the portion of the request URI that indicates the context of the request.

Annoyingly you can't get to this from the ServletContext so you need to cache the value from a recent HttpServletRequest.

The context path always comes first in a request URI. The path starts with a "/" character but does not end with a "/" character. For servlets in the default (root) context, this method returns "". The container does not decode this string.

WARNING: This method may return null if DWR has not received any requests. If this method is called from outside of DWR, as the servlet environment is starting up you should check for a null reply and try again later. The portion of the request URI that indicates the context or nullif DWR has not received and requests so far




getScriptSessionById
ScriptSession getScriptSessionById(String sessionId)(Code)
You can request access to a specific ScriptSession if you know it's ID.

Take care with this method because it allows actions from one browser to affect another which could be a bad thing. It is certainly a VERY BAD idea to let session id's from one browser escape into another.

Consider that it is entirely possible that the ScriptSession may timeout while you are holding a reference to it.
Parameters:
  sessionId - The script session ID to lookup The ScriptSession for the given ID, or null if it does not exist




getScriptSessionsByPage
Collection<ScriptSession> getScriptSessionsByPage(String url)(Code)
Get a list of all ScriptSessions on a given page. Note that the list of known sessions is continually changing so it is possible that the list will be out of date by the time it is used. For this reason you should check that getScriptSession(String id) returns something non null.
Parameters:
  url - The URL including 'http://', up to (but not including) '?' or '#' A collection of all the ScriptSessions.



getServletConfig
ServletConfig getServletConfig()(Code)
Accessor for the servlet config. Returns the config.



getServletContext
ServletContext getServletContext()(Code)
Returns the ServletContext to which this session belongs. The servlet context information.



getVersion
String getVersion()(Code)
Fish the version number out of the dwr.properties file. The current version number.



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