def handleAttr(def className, attrName, def attr) {
    def attrCode = api.metainfo.getMetaClass(className).getAttribute(attrName).type.code;

  	switch (attrCode) {
      case ['object', 'boLinks', 'backBOLinks']:
        return ['UUID': attr?.UUID, 'title': attr?.title];
      case ['catalogItem', 'catalogItemSet']:
        return ['UUID': attr?.UUID, 'code': attr?.code, 'title': attr?.title];
      default:
        return attr;
    }
}

def getData(def requestData) {
	if(!requestData?.className) {
      "Не задан код справочника или класса".with{ utils.throwReadableException(it, null); }
    }

  	def queryColumns = requestData.queryColumns ?: [:];
    def selectAttrs = requestData.selectColumns ?: api.metainfo.getMetaClass(requestData.className).attributes*.code;

    return modules.common.gson(utils.find(requestData.className, queryColumns).collect{ obj ->
      selectAttrs.collectEntries { attr ->
          return ["${attr}": handleAttr(requestData.className, attr, obj."${attr}")];
      }
    });
}

def requestData = [className: 'ae$subSystem', selectColumns: ['currentProject']]; //with select columns
requestData = [className: 'ae$subSystem']; //select all attributes from class
requestData = [className: 'cycle']; //select all attributes from catalog
requestData = [className: '']; //validate input data

return getData(requestData);