com.bowstreet.webapp.util
Interface ModelStateManager

All Superinterfaces:

java.io.Serializable

All Known Implementing Classes:

WebAppModelStateManager

public interface ModelStateManager
extends java.io.Serializable

Interface for classes which oversee saving and restoring the linked model structure of an application by use of information encoded in a URL.

Field Summary

static java.lang.String

MODEL_STATE_MANAGER_ATTRIBUTE Session attribute for storing ModelStateManager implementation

Method Summary

java.lang.String	getStateID(javax.servlet.http.HttpServletRequest req) Analyze the current application state, and return an identifier that can be used to later reconstitute this structure.
void	realizeState(javax.servlet.http.HttpServletRequest req, java.lang.String ID) Given a previously-computed application state ID, bring the current application state into synch with the implied structure.
void	setWebAppAccess(WebAppAccess webAppAccess) Call this to give other methods a WebAppAccess implementation to use.

Field Detail

MODEL_STATE_MANAGER_ATTRIBUTE

static final java.lang.String MODEL_STATE_MANAGER_ATTRIBUTE

Session attribute for storing ModelStateManager implementation

See Also:

Constant Field Values

Method Detail

getStateID

java.lang.String getStateID(javax.servlet.http.HttpServletRequest req)

Analyze the current application state, and return an identifier that can be used to later reconstitute this structure.

Parameters:

req - the HttpServletRequest for this request

Returns:

a short string representing the current state - use URL-friendly characters, since that's where this will be encoded

realizeState

void realizeState(javax.servlet.http.HttpServletRequest req,
                  java.lang.String ID)

Given a previously-computed application state ID, bring the current application state into synch with the implied structure.

Parameters:

req - the HttpServletRequest for this request

ID - the state identifier for the state in question

setWebAppAccess

void setWebAppAccess(WebAppAccess webAppAccess)

Call this to give other methods a WebAppAccess implementation to use.

Parameters:

webAppAccess - a valid WebAppAccess implementation