Develop Reference

Insert DateTime into BigQuery in Stream

I am trying to insert data into a datetime field in BigQuery via WriteStream in Java and keep getting the error
java.util.concurrent.ExecutionException: io.grpc.StatusRuntimeException: INVALID_ARGUMENT: Cannot return an invalid datetime value of 1639484762470 microseconds relative to the Unix epoch. The range of valid datetime values is [0001-01-01 00:00:00, 9999-12-31 23:59:59.999999] on field date_time.
I tried different options: seconds, milliseconds, microseconds, cast from Unix format to Microsoft, insert formatted string (then I get an error that it should be INT64).
Where am I going wrong?
Code is pretty simple
try (JsonStreamWriter writer = JsonStreamWriter.newBuilder(writeStream.getName(), writeStream.getTableSchema(), client).build()) {
for (int i = 0; i < 2; i++) {
JSONArray jsonArr = new JSONArray();
for (int j = 0; j < 10; j++) {
JSONObject record = new JSONObject();
Date date = new Date();
record.put("date_hash", date.hashCode());
record.put("date_string", date.toString());
record.put("date_time", date.getTime());
jsonArr.put(record);
}
ApiFuture<AppendRowsResponse> future = writer.append(jsonArr, i * 10);
AppendRowsResponse response = future.get();
}
}

Problem with Jackson ArrayNode.add Java function

I have a function that should change some values on Object that have some objects of array.
This Object is:
{"avg":{"00:00":[],"01:00":[],"02:00":[],"03:00":[],"04:00":[],"05:00":[],"06:00":[],"07:00":[],"08:00":[],"09:00":[],"10:00":[],"11:00":[],"12:00":[],"13:00":[],"14:00":[],"15:00":[],"16:00":[],"17:00":[],"18:00":[],"19:00":[],"20:00":[],"21:00":[],"22:00":[],"23:00":[]},"avg_hum":{"00:00":[],"01:00":[],"02:00":[],"03:00":[],"04:00":[],"05:00":[],"06:00":[],"07:00":[],"08:00":[],"09:00":[],"10:00":[],"11:00":[],"12:00":[],"13:00":[],"14:00":[],"15:00":[],"16:00":[],"17:00":[],"18:00":[],"19:00":[],"20:00":[],"21:00":[],"22:00":[],"23:00":[]},"max":{"00:00":[],"01:00":[],"02:00":[],"03:00":[],"04:00":[],"05:00":[],"06:00":[],"07:00":[],"08:00":[],"09:00":[],"10:00":[],"11:00":[],"12:00":[],"13:00":[],"14:00":[],"15:00":[],"16:00":[],"17:00":[],"18:00":[],"19:00":[],"20:00":[],"21:00":[],"22:00":[],"23:00":[]},"min":{"00:00":[],"01:00":[],"02:00":[],"03:00":[],"04:00":[],"05:00":[],"06:00":[],"07:00":[],"08:00":[],"09:00":[],"10:00":[],"11:00":[],"12:00":[],"13:00":[],"14:00":[],"15:00":[],"16:00":[],"17:00":[],"18:00":[],"19:00":[],"20:00":[],"21:00":[],"22:00":[],"23:00":[]},"max_hum":{"00:00":[],"01:00":[],"02:00":[],"03:00":[],"04:00":[],"05:00":[],"06:00":[],"07:00":[],"08:00":[],"09:00":[],"10:00":[],"11:00":[],"12:00":[],"13:00":[],"14:00":[],"15:00":[],"16:00":[],"17:00":[],"18:00":[],"19:00":[],"20:00":[],"21:00":[],"22:00":[],"23:00":[]},"min_hum":{"00:00":[],"01:00":[],"02:00":[],"03:00":[],"04:00":[],"05:00":[],"06:00":[],"07:00":[],"08:00":[],"09:00":[],"10:00":[],"11:00":[],"12:00":[],"13:00":[],"14:00":[],"15:00":[],"16:00":[],"17:00":[],"18:00":[],"19:00":[],"20:00":[],"21:00":[],"22:00":[],"23:00":[]},"beginDate":"","endDate":""}
And I need to add values to arrays (like: {"00:00": [25],...})
So, I tried something like ("data_raw" is the received object):
ArrayNode array = mapper.createArrayNode();
array = (ArrayNode) data_raw.get("avg").get("00:00");
array.add((double) 25.11666711171468);
System.out.println("data_raw: " + data_raw.toString());
And the result ("data_raw" object) is:
data_raw: {"avg":{"00:00":[25.11666711171468],"01:00":[],"02:00":[],"03:00":[],"04:00":[],"05:00":[],"06:00":[],"07:00":[],"08:00":[],"09:00":[],"10:00":[],"11:00":[],"12:00":[],"13:00":[],"14:00":[],"15:00":[],"16:00":[],"17:00":[],"18:00":[],"19:00":[],"20:00":[],"21:00":[],"22:00":[],"23:00":[]},"avg_hum":{"00:00":[25.11666711171468],"01:00":[],"02:00":[],"03:00":[],"04:00":[],"05:00":[],"06:00":[],"07:00":[],"08:00":[],"09:00":[],"10:00":[],"11:00":[],"12:00":[],"13:00":[],"14:00":[],"15:00":[],"16:00":[],"17:00":[],"18:00":[],"19:00":[],"20:00":[],"21:00":[],"22:00":[],"23:00":[]},"max":{"00:00":[25.11666711171468],"01:00":[],"02:00":[],"03:00":[],"04:00":[],"05:00":[],"06:00":[],"07:00":[],"08:00":[],"09:00":[],"10:00":[],"11:00":[],"12:00":[],"13:00":[],"14:00":[],"15:00":[],"16:00":[],"17:00":[],"18:00":[],"19:00":[],"20:00":[],"21:00":[],"22:00":[],"23:00":[]},"min":{"00:00":[25.11666711171468],"01:00":[],"02:00":[],"03:00":[],"04:00":[],"05:00":[],"06:00":[],"07:00":[],"08:00":[],"09:00":[],"10:00":[],"11:00":[],"12:00":[],"13:00":[],"14:00":[],"15:00":[],"16:00":[],"17:00":[],"18:00":[],"19:00":[],"20:00":[],"21:00":[],"22:00":[],"23:00":[]},"max_hum":{"00:00":[25.11666711171468],"01:00":[],"02:00":[],"03:00":[],"04:00":[],"05:00":[],"06:00":[],"07:00":[],"08:00":[],"09:00":[],"10:00":[],"11:00":[],"12:00":[],"13:00":[],"14:00":[],"15:00":[],"16:00":[],"17:00":[],"18:00":[],"19:00":[],"20:00":[],"21:00":[],"22:00":[],"23:00":[]},"min_hum":{"00:00":[25.11666711171468],"01:00":[],"02:00":[],"03:00":[],"04:00":[],"05:00":[],"06:00":[],"07:00":[],"08:00":[],"09:00":[],"10:00":[],"11:00":[],"12:00":[],"13:00":[],"14:00":[],"15:00":[],"16:00":[],"17:00":[],"18:00":[],"19:00":[],"20:00":[],"21:00":[],"22:00":[],"23:00":[]},"beginDate":"","endDate":""}
I expect that just "avg":{"00:00":[X],...} be changed, but all objects with "00:00" name are being replaced regardless of the selected "primary field": "avg".
Can someone help me?
EDIT:
Complete related code:
String[] name_db_data = {"avg", "avg_hum", "max", "min", "max_hum", "min_hum"};
SimpleDateFormat hourFormatted = new SimpleDateFormat("HH:mm");
reType = reportType.detailedDailyReport;
ResultSet rs = stm.executeQuery(query); // The String "query" is a dynamic MySQL query.
while(rs.next())
{
if(reType == reportType.detailedDailyReport)
{
int count4 = 0;
Calendar c = Calendar.getInstance();
c.setTime(rs.getTime("hour"));
for(count4 = 0; count4 < name_db_data.length; count4 ++)
{
ArrayNode array_aux2 = mapper.createArrayNode();
array_aux2 = (ArrayNode) data_raw.get(name_db_data[count4]).get(hourFormatted.format(c.getTime()));
array_aux2.add(rs.getDouble(name_db_data[count4]));
}
}

java: how to get Timezone abbreviation (from offset)?

My code like belows, I am using android. I found different devices may have different result.
Using different phone: I can get : "EST" or "GMT-05:00".
However, I just want to get abbreviation(just like "EST").
How can I get the abbreviation (or change offset to abbreviation)?
String timezone =Calendar.getInstance().getTimeZone().getDisplayName(false, TimeZone.SHORT);

If anyone else need the solution : I just tweak the code and get desired short name, which i needed to display to user.
private static String getTimeZoneShortName() {
String tz = TimeZone.getDefault().getDisplayName();
String[] stz = tz.split(" ");
StringBuilder sName = new StringBuilder();
for (int i = 0; i < stz.length; i++) {
sName.append(stz[i].charAt(0));
}
return sName.toString();
}

setting a format for a date in ms access

I'm trying to format a date formatted result from a database into date only. ("dd"). The query results are formatted like this, 2014-05-17 00:00:00 I want to extract only "17", How can I achieved this? This is my code.
String query = "SELECT DISTINCT date FROM Attendance;";
Object[][] queryResult = connectToDB(headerQuery);
for(int x = 0; x < queryResult.length; x++){
for(int y=0; y < queryResult[x].length; y++){
Object temp = queryResult[x][y];
SimpleDateFormat format = new SimpleDateFormat("dd");
System.out.print(format.format(temp));
System.out.println(temp+ "<-----");
}
System.out.println("---");
}
this is my error
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: java.lang.String cannot be cast to java.util.Date
UPDATE: I've changed the for-loop into this:
for(int x = 0; x < queryResult.length; x++){
for(int y=0; y < queryResult[x].length; y++){
String temp = (queryResult[x][y]).toString();
SimpleDateFormat format = new SimpleDateFormat("dd");
Date date = (Date) format.parse(temp);
System.out.println(date+ "<-----");
}
System.out.println("---");
}
but it still does not format the date;

OK so you're trying to format a String. That is, temp is a String and you can't pass that into format. You need to turn that String into a Date then pass it into format. Here's how.
But, even better, you should be returning a Date from the query instead of a String. That'll make your life much easier. Then you don't need to change any other part of the code.
Show us your connectToDB. Assuming it's using JDBC, you should get the result by calling ResultSet.getDate

Why not use SQL to extract the day part?
SELECT DatePart('d', [date]) as theDay FROM Attendance

How to change the value of a variable once per day in Java/javascript

I'm trying to make an application/script for my school which displays the day's schedule. The catch with this is that my school runs on an 8 day cycle, so that complicates things. I have a a variable called cycleDay , but how would I go about updating this just once per day, and not more than that? If there's another way you can think of doing this, please let me know.
Thanks!

You can use, say, the getTime() function of the Date object, which returns the current time in milliseconds after January 1, 1970 (source: http://www.w3schools.com/jsref/jsref_gettime.asp), and save that value (e.g. in var lastUpdateTime). Then periodically check if the difference between the current time and that saved time is more than a day. If so, update cycleDay, and also update lastUpdateTime to the time when you updated.
For instance, initialize with:
var lastUpdateTime = new Date().getTime();
Somewhere else in your code:
var currentTime = new Date().getTime();
if(currentTime - lastUpdateTime >= 24*60*60*1000) // number of milliseconds in a day
{
// update cycleDay
lastUpdateTime = currentTime;
// ...
}

private Date lastUpdate = now()-1;
private myDailyChahgedValue;
Integer getMyDailyChangedValue() {
if (lastUpdate <> now()) {
myDailyChahgedValue ++;
}
return value;
}
Please note it is an a draft of code what shows main idea

Use Date and document.cookies to update your variable. Also i used two utility methods to manipulate document.cookies
var today = parseInt(new Date().getTime()/(1000*3600*24))
var cookies = getCookies();
if(cookies["last_updated"] && cookies["last_updated"]<today)
{
/* update variable */
setCookie("last_updated", today, 1);
}
/* utility methods starts, adding utility methods to simplify setting and getting cookies */
function setCookie(name, value, daysToLive) {
var cookie = name + "=" + encodeURIComponent(value);
if (typeof daysToLive === "number")
cookie += "; max-age=" + (daysToLive*60*60*24);
document.cookie = cookie;
}
function getCookies() {
var cookies = {}; // The object we will return
var all = document.cookie; // Get all cookies in one big string
if (all === "") // If the property is the empty string
return cookies; // return an empty object
var list = all.split("; "); // Split into individual name=value pairs
for(var i = 0; i < list.length; i++) { // For each cookie
var cookie = list[i];
var p = cookie.indexOf("="); // Find the first = sign
var name = cookie.substring(0,p); // Get cookie name
var value = cookie.substring(p+1); // Get cookie value
value = decodeURIComponent(value); // Decode the value
cookies[name] = value; // Store name and value in object
}
return cookies;
}
/* utility methods ends */