ArrayUtil difference is not working as expected

[SHA3]

Hi,

I am trying to find difference of list collector to find the new values entered by user, have tried many ways, below is the current code i have

Note: Also tried using jQuery.control to fetch old value since that didnt work as well declared a hidden field "u_oldusers" to hold the values previously entered by the user to compare with new values and then to get difference of both using Arrayutil.diff(<new>,<old>). But for some reason, difference is passing all values in Newvalues instead of passing only difference.

u_oldusers on alerting does provide previously selected values and i am trying to capture the difference even before newvalues are updated to oldvalues filed.

Onchange Client script:

---------------------------------------------------------------------------------------------------------------------------------------

function onChange(control, oldValue, newValue, isLoading) {

    if (isLoading) {

          return;

    }

  var delay = 2000;//2 milliseconds

  if(newValue == ''){

  g_form.setDisplay('u_cs_001',false);

  g_form.setDisplay('u_table',false);

  }else{

  g_form.setDisplay('u_cs_001',true);

  g_form.setDisplay('u_table',true);

  }

  var d = g_form.getValue('u_oldusers');

  var a = []; var b = []; var c = g_form.getValue('u_select_users');

  g_form.setValue('u_newusers',c); var n = [];

//Type appropriate comment here, and begin script below

  //alert('old users: '+g_form.getValue('u_oldusers')+' newusers: '+g_form.getValue('u_select_users'));

  if(n != d)

  {

  a = g_form.getValue('u_oldusers').toString(); a = a.split(',');  

  if (a == null){a = [" "];}

  n=g_form.getValue('u_newusers').toString();n = n.split(',');

  //alert('a '+a+' b '+b);

  var ga = new GlideAjax('CatAjaxUtils');

  ga.addParam('sysparm_name','getdifference');

  ga.addParam('sysparm_old_users',a);

  ga.addParam('sysparm_newusers',n);

  ga.getXMLWait();

    var ans = JSON.parse(ga.getAnswer());

  //alert('ans is '+ans);

alert('old users: '+g_form.getValue('u_oldusers')+' -- a-- '+a+' newusers: '+g_form.getValue('u_newusers'));

  angular.element(document.getElementById("newApp")).scope().addData1(ans);

  angular.element(document.getElementById('newApp')).scope().$apply();

  }

  g_form.setValue('u_oldusers',c);

}

-------------------------------------------------------------------------------------------------------------------------------

Script Include Ajax call function:

getdifference: function(){

  var arrayUtil = new ArrayUtil(); var prevusers = []; var newusers = [];

prevusers = this.getParameter('sysparm_old_users').toString();

  if(prevusers != null)

  {prevusers = prevusers.split(',');}

  else{

  prevusers = [];}

newusers = this.getParameter('sysparm_newusers').toString();newusers = newusers.split(',');

  gs.log('prev users: '+ prevusers+ ' newusers '+newusers);

var difference = []; difference= arrayUtil.diff(newusers,prevusers);

gs.log('difference '+ difference);

return JSON.stringify(difference);

},

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Out put of gs.log is like : prev users: [Ljava.lang.String;@ae2b34 newusers [Ljava.lang.String;@17866eb

Appreciate your responses on this.

[SanjivMeher]

I get the below result, which looks correct.

*** Script: prev users: a,b,c,d,e,f,g newusers a,b,c,h,i,j

Background message, type:info, message: difference h,i,j

What do you get log for gs.log('prev users: '+ prevusersarr + ' newusers '+newusersarr );?

[SHA3]

Prev Users and New Users is printing as below,

prev users: [Ljava.lang.String;@6e6336 newusers [Ljava.lang.String;@377fc0

I am not sure why it is printing in object format, when i am adding it in Array format.

[SanjivMeher]

Please add one more log statement. and let me know the results.

getdifference: function(){

var arrayUtil = new ArrayUtil();

var prevusers = ''; var newusers = '';

var prevusersarr = []; var newusersarr = [];

prevusers = this.getParameter('sysparm_old_users').toString();

newusers = this.getParameter('sysparm_newusers').toString();

gs.log('++++++++++prevusers: '+ prevusers+ ' +++++++++newusers= '+newusers);

  if(prevusers != null)

  {prevusersarr = prevusers.split(',');}

  else{

  prevusersarr = [];}

newusersarr = newusers.split(',');

  gs.log('prev users: '+ prevusersarr + ' newusers '+newusersarr );

var difference = []; difference= arrayUtil.diff(newusersarr ,prevusersarr );

gs.log('difference '+ difference);

return JSON.stringify(difference);

},

[SHA3 · Accepted solution]

Hi Sanjiv,

Thanks for your responses.

I couldn't get a solution using Arrayutil.diff. So i have used a for loop to get to the solution i needed.

for( var i = 0;i<newusers.length;i++)

  {

  if(oldusers.indexOf(newusers[i])== '-1'){

  difference.push(newusers[i]);

}

Difference has the list of users i need. I have added a flag to get the difference between newuser and olduser, so that this line of code runs only when users are added, not otherwise.

List collector, onchange runs even on click of pointer on a value in either side. So adding flag helped me.

[SanjivMeher]

The only way you will be able to find out is during submit. So use onSubmit to compare the two variables.