Bloomberg RBblpapi与bds

Question

我正在尝试使用Rblpapi软件包通过R访问Bloomberg。我正在执行以下命令

library(Rblpapi)

con <- blpConnect()
opt <- c("START_DT"="19990101", "END_DT"="20160101")
bds("CPI YOY Index","ECO_RELEASE_DT_LIST", options = opt, con = con)
blpDisconnect(con)

我收到以下错误，＆＃34;错误：子元素＆＃39;（null）＆＃39;不存在。＆＃34;。它与选项有关。我可以使用这些选项在excel中获取数据，所以我不确定缺少什么。非常感谢任何帮助。

Answer 1

当你省略开始和结束日期时，我可以正常工作：

EditText UserNameEt;
EditText EmailEt;
String email;
String username;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_add_patient);

    UserNameEt = (EditText) findViewById(R.id.et1);
    EmailEt = (EditText) findViewById(R.id.et2);
    username = UserNameEt.getText().toString();
    email = EmailEt.getText().toString();

    final TextView tv = (TextView) findViewById(R.id.tv);

    ParseQuery<ParseObject> lotsOfWins = ParseQuery.getQuery("User");
    lotsOfWins.whereEqualTo("email",email);

    ParseQuery<ParseObject> fewWins = ParseQuery.getQuery("User");
    fewWins.whereEqualTo("username", username);

    List<ParseQuery<ParseObject>> queries = new ArrayList<ParseQuery<ParseObject>>();
    queries.add(lotsOfWins);
    queries.add(fewWins);

    ParseQuery<ParseObject> query = ParseQuery.or(queries);


    query.findInBackground(new FindCallback<ParseObject>() {
        @Override
        public void done(List<ParseObject> objects, ParseException e) {
            if (true) {
                tv.setText("Patient found");
            } else {
                tv.setText("Patient Not found");
            }
        }
    });

    String Result = tv.getText().toString();

    if (Result=="Patient found"){
        Button fill = (Button) findViewById(R.id.button);

        fill.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent i = new Intent(AddPatient.this,Patients.class);
                startActivity(i);
            }
        });
    }

}

}

另请注意，我们更喜欢将错误报告等作为GH的发行票。