July 2016
Intermediate to advanced
490 pages
10h 54m
English
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Variable scopes
Spring Web Flow creates variables or objects under scopes. These scopes are just similar to JEE scope components, which determine the time frame of when to access these variables. Under Spring Web Flow, there are five scopes that can be mapped to a newly created object:
flowScope: Assigns a flow variable; variables under this scope get allocated when a flow starts and destroyed when the flow ends.; any objects stored in flow scope need to be serializable:<evaluate expression= "addCartProducts.retrieveProductList (flowScope.cartProducts)" />conversationScope: Assigns aconversationvariable; variables under this scope are used whenever a top-level needs to generate objects to be accessed by its sub-flows; they are destroyed when ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.