Win a copy of Testing JavaScript Applications this week in the HTML Pages with CSS and JavaScript forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Bear Bibeault
  • Ron McLeod
  • Jeanne Boyarsky
  • Paul Clapham
Sheriffs:
  • Tim Cooke
  • Liutauras Vilda
  • Junilu Lacar
Saloon Keepers:
  • Tim Moores
  • Stephan van Hulst
  • Tim Holloway
  • fred rosenberger
  • salvin francis
Bartenders:
  • Piet Souris
  • Frits Walraven
  • Carey Brown

BodyTag doubt

 
Ranch Hand
Posts: 324
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Regarding the processing of a BodyTag handler, in which of the following cases a BodyContent object will be "pushed" into the pageContext?
Select 1 correct option.

A.If the doStartTag() returns EVAL_BODY_INCLUDE
B.If the doStartTag() returns EVAL_BODY_BUFFERED
C.If the doStartTag() returns SKIP_BODY
D.If the doStartTag() DOES NOT return SKIP_BODY
E.A BodyContent object it is always created and pushed no matter what doStartTag() returns


The given answer is C, which I thought is Incorrect .
because

1. A tag handler that implements BodyTag is treated as one that implements IterationTag, except that the doStartTag method can return SKIP_BODY, EVAL_BODY_INCLUDE or EVAL_BODY_BUFFERED.

2. If EVAL_BODY_BUFFERED is returned, then a BodyContent object will be created (by code generated by the JSP compiler) to capture the body evaluation. The code generated by the JSP compiler obtains the BodyContent object by calling the pushBody() method of the current pageContext, which additionally has the effect of saving the previous out value

3. If EVAL_BODY_BUFFERED is returned, and the custom action element is not empty, setBodyContent() is invoked, doInitBody() is invoked, the body is evaluated, doAfterBody() is invoked, and then, after zero or more iterations, doEndTag() is invoked. If the custom action element is empty, only doStart() and doEndTag() are invoked.

please correct me if I am wrong


 
Poonam Agarwal
Ranch Hand
Posts: 324
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
please check this thread.
 
Curse your sudden but inevitable betrayal! And this tiny ad too!
Building a Better World in your Backyard by Paul Wheaton and Shawn Klassen-Koop
https://coderanch.com/wiki/718759/books/Building-World-Backyard-Paul-Wheaton
    Bookmark Topic Watch Topic
  • New Topic