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FilipFilip 

Wrong method call?

Hello guys,

 

I am trying to call this method

 

  public JSONObject getJSONObject(String key)  {     Object o = get(key);        if (o instanceof JSONObject) {            return (JSONObject)o;        }        throw new JSONException('JSONObject[' + quote(key) +                '] is not a JSONObject.'); 

}

..declared under public class JSONObject. I am calling it with this code:

 

protected virtual List<SearchResult> parseSearchResults(String json) {

JSONObject j = new JSONObject(json);

JSONObject a = new j.getJSONObject('results');  

 

 

 

  

 

 

 

 

 

 

...but keep getting compile error 

 

Error: Compile Error: Invalid type: j.getJSONObject at line 221 column 28  

 

 

 

 

 Can you please help? I have tried all permutations I could imagine.

 

Many thanks

F. 

   

Message Edited by Filip on 02-03-2009 10:56 AM
Message Edited by Filip on 02-03-2009 10:57 AM
werewolfwerewolf

What you've written there doesn't make sense.  First of all, you can't call new on a method.  You can make a method in a class return itself if you want, although the actual contents of your method there don't make a lot of sense either.

 

If what you're trying to implement is a singleton, then it would probably be something like this:

 

 

public class JSONObject
{
	static JSONObject theObject;
	
	public static JSONObject getJSONObject() {
		if (theObject==null) {
			theObject = new JSONObject();
		}
		
		return theObject;
	}
}
 
And then you'd get your singleton JSONObject by saying something like

JSONObject j = JSONObject.getJSONObject();
 
 


werewolfwerewolf
Ah -- now I see that you're using the JSONObject from the open source library.
 
So just make a new JSONObject, passing in a string containing the JSON you want to parse:
 
JSONObject j = new JSONObject(myJSONString);
 
and then call your methods on j, like
 
j.getString('results'); 


FilipFilip
Hi Werewolf, thanks for picking up. I don't want to change the method definition, it's opensource that should work (http://developer.force.com/codeshare/apex/ProjectPage?id=a0630000002ahp4AAA).
 
I am trying to declare a JSONObject and assign it the (JSONObject) 'value' returned from method getJSONObject of (another JSONObject) j, called with parameter 'results'. 
 
This is my crude version of it, 
JSONObject a = new JSONObject(''); 
a = j.getJSONObject('results');  
 
but here compiler says 'Method does not exist or incorrect signature'. 
 
Thanks for help.
F. 


werewolfwerewolf
Well in your original post it said
 
a = new j.GetJSONObject('results');
 
The "new" was wrong.
 
In this case you can simply put
 
JSONObject a = j.getJSONObject('results'); 


FilipFilip
Ok, that's what I had before one hour of tweaking. :) But both what I wrote and what you wrote give the same error - 
 
 
 
JSONObject a = j.getJSONObject('results'); 
 
Compile Error: Method does not exist or incorrect signature: [JSONObject].getJSONObject(String) at line 221 column 24	
 
It doesn't seem to like 'j', which I have declared as 
 
JSONObject j = new JSONObject(json); 
 
 
As I wrote, the method definition is 
public JSONObject getJSONObject(String key)
 
 
which I thought was what I was doing there...hmmm any idea?
  
  
 
 
 


AaranAaran
I'm having the same problem. did u solve the problem?  if so, pls let me know what have u done? thanks