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RUDOLF_BOTHMA's avatar
RUDOLF_BOTHMA
Community Hero
6 years ago
Solved

WaitCell and object does not exist

Afternoon folks,   I'm running into an intermittent issue I hope have you have ideas about.   There are loads of questions that are ALMOST the same, but none of them seem to be quite what I'm exp...
Name Mapping
Object Recognition
  • RUDOLF_BOTHMA's avatar
    RUDOLF_BOTHMA
    6 years ago

    Edit: clarified code.

     

    Well, after extensive testing I can say that the issue is gone.  The changes I made as a result of this thread has both made my scripts faster and more reliable - thanks :smileyvery-happy:  It didn't resolve the majority of the issues though.  I finally found what is causing the majority of the errors and it has nothing to do with this.  The problem lies with this piece of code that posts an image of a parent of the tested object because sometimes just seeing a blank textbox doesn't mean anything:

    WriteAnEntry(Aliases.browser...MyTextBox,"I'm writing to the textbox",3);

function WriteAnEntry(aliasObj,messageText,addPicture,moveXTiersUpforPicture)
{
	if(aliasObj===null || aliasObj==undefined || !aliasObj.Exists)
  {
    Log.Message(messageText);
		return;
  }
	
	var imageobject = aliasobject;
	var currenTier = 0
	if(addPicture)
	{
		while(imageobject!=null && imageobject!=undefined&&currenTier<moveXTiersUpforPicture)
		{
			if(imageobject.ObjectType!="Form") //Don't go TOO high'
				break;
	
			currenTier++;	
			if(imageobject.Parent !=null && imageobject.Parent !=undefined && imageobject.Parent.Exists)
			{
					imageobject = imageobject.Parent;			
			}	
		}	
	}
    var testtheobject = imageobject!=null && imageobject!=undefined&& imageobject.Exists;
    //testtheobject is true now
	//nowhere in the above code do I ever allocate a null/undefined/!exists to my imageobject var
	//but, very occasionally when I do the following call, the image object is gone, 
	//so it's the testing for null or undefined causes the error
	Log.Message(messageText,"", pmNormal, "",(addPicture && imageobject!=null && imageobject!=undefined ) ? imageobject:"");	
}

    So, how did I fix it ?  Try.. Catch

     

    var canDoImage = null;
		var placeholderObj = null;
		try
		{
				placeholderObj = (imageobj!=null && imageobj!=undefined && imageobj.Exists) ? imageobj : null;
				if(placeholderObj==null)
				{
					canDoImage = false;    
				}				
		}
		catch (e)
		{				
				canDoImage = false;    
		}
   
    Log.Message(messageText,"", pmNormal, "",(canDoImage && placeholderObj!=null ) ? placeholderObj:null);

     I have NO idea how that object gets lost, but there you have it...

     

     

RUDOLF_BOTHMA's avatar
RUDOLF_BOTHMA
Community Hero

Sorry, I mistyped.  All those 1000 delays are 10000.  New strategy:

 

 

var waitCell = grid.WaitCell(0,0,100);
var waitloops = 0;
while(!waitCell.Exists && waitloops < 100)
{
	waitloops++;
	waitCell = grid.WaitCell(0,0,100);
	if(waitCell.Exists)
		break;
}

That way it still leaves 10 seconds, but might pick it up sooner.  If it still doesn't exist after 10 seconds, well, the problem is with th speed of the page.  On the other hand, if it's something internal to WaitCell() it won't make any difference to the error.  It may even cause it to happen multiple times.  I'll let you know how it goes...

  • RUDOLF_BOTHMA's avatar
    RUDOLF_BOTHMA
    Community Hero
    6 years ago

    I may have no choice in this instance.  I cry in the corner each time I delay my tests artificially :smileysad:

     

    As to building in loops everywhere.  Here's my plan

     

    I have a "Common" scrip which holds all the small little bits and bobs that I use often.  So in my common script I create a function 

     

    function WaitRapper(waitType, waitObject, arguments, overrideWaitInterval, overrideRetries) //I'm a child of the nineties, so I'm more into electronic dance music, but WaitEDM just isn't as catchy
{
	var requiredRaitInterval = (overrideWaitInterval==null || overrideWaitInterval==undefined) ? 100 : aqConvert.VarToInt(overrideWaitInterval);
	var requiredRetries = (overrideRetries==null || overrideRetries==undefined) ? 100 : aqConvert.VarToInt(overrideRetries);
	var retryCount = 0;
	var returnObject = null;
	
	switch(aqString.ToUpper(aqConvert.VarToStr(waitType)))
	{
		case 'CELL':
			returnObject = waitObject.WaitCell(aqConvert.VarToStr(arguments[0]),aqConvert.VarToStr(arguments[1]), requiredRaitInterval);
			while(!returnObject.Exists && retryCount < requiredRetries)
			{
				retryCount++;
				returnObject = waitObject.WaitCell(aqConvert.VarToStr(arguments[0]),aqConvert.VarToStr(arguments[1]), requiredRaitInterval); //The arguments needs to be an array
				if(returnObject.Exists)
				{
					break;
				}
			}
			break;
		case 'TABLE':
			returnObject = waitObject.WaitTable(aqConvert.VarToStr(arguments), requiredRaitInterval);
			while(!returnObject.Exists && retryCount < requiredRetries)
			{
				retryCount++;
				returnObject = waitObject.WaitTable(aqConvert.VarToStr(arguments), requiredRaitInterval); //The arguments has to be a string
				if(returnObject.Exists)
				{
					break;
				}
			}
			break;
			default: 
				returnObject = waitObject.WaitTable(aqConvert.VarToStr(arguments), requiredRaitInterval);
				while(!returnObject.Exists && retryCount < requiredRetries)
				{
					retryCount++;
					returnObject = waitObject.Wait(aqConvert.VarToStr(arguments), requiredRaitInterval); //The arguments has to be a string with the object name
					if(returnObject.Exists)
					{
						break;
					}
				}
			break;
	}
	
	return returnObject;
}

    Now, wherever I need to wait:

     

    //USEUNIT Common

grid.RefreshMappingInfo();

var waitCell = WaitRapper("Cell",grid,[0,0]);	

if(waitCell.Exists)
{
....
    Now to figure out where the coffee has gone...