CAML Query and using non user credentials

Question

I have 2 sites for 2 different groups. One group has access to site1 and one group has site2. Each group does not have access to the others site.

I have a query however that needs to access each site upon entry of a field to see if it exists. Unfortunately the query will fail due to the user not having access to one of the sites.

Is there a way that I can pass credentials that have access to query?

This is my code:

var clientContext = new SP.ClientContext('https://mysite.sharepoint.com/site/site1/');
var oList = clientContext.get_web().get_lists().getByTitle('list');
var camlQuery = new SP.CamlQuery();
camlQuery.set_viewXml('<View><Query><Where><Eq><FieldRef Name=\'Title\'/>' +
    '<Value Type=\'Text\'>'+check+'</Value></Eq></Where></Query></View>');
this.collListItem = oList.getItems(camlQuery); 
clientContext.load(collListItem, 'Include(Id, DisplayName)');
clientContext.executeQueryAsync(Function.createDelegate(this, this.onQuerySucceeded), Function.createDelegate(this, this.onQueryFailed));

Answer 1

You can impersonate only using server side code.

So either provide read access or create a custom web part for displaying data.