Question
What is ValueStack and OGNL
Answers
ValueStack is the storage area where the application data is stored by Struts2 for processing the client requests. The data is stored in ActionContext objects that use ThreadLocal to have values specific to the particular request thread.

Object-Graph Navigation Language (OGNL) is a powerful Expression Language that is used to manipulate data stored on the ValueStack. As you can see in architecture diagram, both interceptors and result pages can access data stored on ValueStack using OGNL.   Your Comment




  • Contributors: *,
More Software,Java Questions..
What is the inputsplit in map reduce software?
Can variables be used in Java without initialization?
What is the difference between java bean and enterprise java bean?
What is software configuration management?
How does the java database connectivity (jdbc) work?
What are the advantages of threads in java?
What Is Java Api For Xml-based Rpc (jax-rpc)?
How can you implement fine-grained auditing?
What is IBM’s simple explanation for Big Data’s four critical features?
What is static synchronized method in JDBC API? Give an example?
What does the NULLIF function do?
What happens if a start method is not invoked and the run method is directly invoked?
Should we override finalize method
what is the difference between mysql_fetch_array and mysql_fetch_object?
How will XML affect my document links?
What is object cloning in Java?
Why to use Style Sheets?
What are Filters in MVC?
Can you explain Application layer in OSI model?
How to define new testplan attributes?


Search
Can you Answer!!
  • Q Can satellite 6 manage rhel 7 client systems?
  • Q What's the difference between system.string and system.text.stringbuilder classes?
  • Q the number was shifted everytime by one and bitwise and with 10000000.one was supposed to find what the code was doing.
  • Q In Florida its illegal for a housewife to do what more 3 times daily
  • Q Can an assembly have EXE?
  • Q How do we prevent a cross-join?
  • Q Give an account of male and female urinogenital system of rat.
  • Q Which part was called Babul Makka (Gate of Makka) during the Mughal Period?
  • Q Who established the noble prize for economics
  • Q How to run jmx java application in udeploy process?
  • Q Explain the concept of content types?