org.apache.lens.server.api.user

Class UserConfigLoader

java.lang.Object

org.apache.lens.server.api.user.UserConfigLoader

Direct Known Subclasses:

DatabaseUserConfigLoader, FixedUserConfigLoader, PropertyBasedUserConfigLoader

public abstract class UserConfigLoader
extends Object

The Class UserConfigLoader. It's initialized once in the server lifetime. After that, t: 1. Gets session configs for the user on each session open. This config applies to the particular session and is forwarded for all actions. One Use case is to decide driver specific details e.g. priority/queue of all queries of the user. 2. Provides a pre-submit hook. Just before submission

Method Summary

Methods

Modifier and Type	Method and Description
abstract Map<String,String>	getUserConfig(String loggedInUser) Gets the user config.
void	preSubmit(QueryContext ctx)

Methods inherited from class java.lang.Object

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

Method Detail

getUserConfig

public abstract Map<String,String> getUserConfig(String loggedInUser)
                                          throws UserConfigLoaderException

Gets the user config.

Parameters:

loggedInUser - the logged in user

Returns:

the user config

Throws:

UserConfigLoaderException - the user config loader exception

preSubmit

public void preSubmit(QueryContext ctx)
               throws LensException

Throws:

LensException