Function queryHash

src/LiveQuery/QueryTools.js:99–135

* Generate a hash from a query, with unique fields for columns, values, order, * skip, and limit.

(query)

 * skip, and limit.
 */
function queryHash(query) {
  if (query instanceof Parse.Query) {
    query = {
      className: query.className,
      where: query._where,
    };
  }
  var where = flattenOrQueries(query.where || {});
  var columns = [];
  var values = [];
  var i;
  if (Array.isArray(where)) {
    var uniqueColumns = {};
    for (i = 0; i < where.length; i++) {
      var subValues = {};
      var keys = Object.keys(where[i]);
      keys.sort();
      for (var j = 0; j < keys.length; j++) {
        subValues[keys[j]] = where[i][keys[j]];
        uniqueColumns[keys[j]] = true;
      }
      values.push(subValues);
    }
    columns = Object.keys(uniqueColumns);
    columns.sort();
  } else {
    columns = Object.keys(where);
    columns.sort();
    for (i = 0; i < columns.length; i++) {
      values.push(where[columns[i]]);
    }
  }

  var sections = [columns.join(','), stringify(values)];

  return query.className + ':' + sections.join('|');
}

/**
 * contains -- Determines if an object is contained in a list with special handling for Parse pointers.