protected void request_mktData(Company company) {
Contract contract = company.create_contract();
Vector<TagValue> mkt_data_options = new Vector<TagValue>();
sem_oid.acquireUninterruptibly();
OpenRequest or = new OpenRequest(company, -1);
open_request_map.put(next_orderId, or);
client.reqMktData(next_orderId, contract, null, true, mkt_data_options);
next_orderId++;
sem_oid.release();
}
