unable to access returned values of global class method

Question

I am trying to access the returned values of a global class method and store them in a string. The string is declared as global static string. The value gets stored in the string when in the method. But when I try use the string in other method of same class, the string is blank/null. There are no values in it.

@RestResource(urlMapping='/xyz/cases/V1/')
global with sharing class controllerc
    { 
      global static string sentresponse;
      @HttpPost   
      global static Casewrapper createNewCase() 
     {
       Casewrapper response= new Casewrapper ();
       ....
       ....
       sentresponse=string.valueOf(response);
       system.debug('^^Sentreposne'+sentresponse); // here the string has returned values.
       return response;
     }
  global static void ErrorMesage()
  {
    Attachment attachres=new Attachment();
    ..... 
    system.debug('++response' + sentresponse); // here the string is null
    attachres.Body=Blob.valueOf(sentreponse);
    ......
    insert attachres;
  }
}

Please help in how to fetch the response and call it in other method of the same class and assign it to the body of attachment. Thanks in advance.

Regards, Sfdcdev

Answer 1

To expand on Nitesh's comment, a call to createNewCase and a call to ErrorMesage are independent. This allows a request to be processed by any server and so greatly helps scalability and simplifies failover. Every requests is starting from scratch as far as the state in code variables (including static ones) is concerned.

So your choices are:

• Perform both operations in a single method
• Return the value required by the second method as part of the results of the first method and then pass the value back as an argument to the second method