blah.js

mosql.registerConditionalHelper( '$matches', function( column, set, values, collection ) {
  return column + ' @@ plainto_tsquery(' + set + ')';
});

mosql.registerConditionalHelper( '$partialMatches', function( column, set, values, collection ) {
  // This breaks down a query for prefix matching.
  // The limitation is it does not support spaces
  // but rather & (AND) and | (OR) and ! (NOT).
  // Ex to_tsquery('cat & hat & !ham') -- works
  //    to_tsquery('cat in the hat')  -- error!
  return column + ' @@ to_tsquery(' + set + '||\':*\')';
});