在使用Node.js时,是否有方法在firebase(admin)中进行搜索查询?

var admin = require('firebase-admin');
var db = admin.database();
var ref = db.ref();
ref.query('name=' + formData.name, function(searchResult) {
  if (searchResult.length == 0) {
    response.writeHead(200, { 'Content-Type': 'text/html' });
    response.write(userInfo);
    response.end();
  } else {
    response.writeHead(500, { 'Content-Type': 'text/html' });
    response.write('App existed.');
    response.end();
  }
});