I am trying to match a field that is not a key with a remote hazelcast, the goal here is to create many remote instances and use it to store serialized objects.
what i noticed is that if i do both put and SQL in the same run, the return works, as follow :
my class
public class Provider implements Serializable {
private String resourceId;
private String first;
public String getResourceId() {
return resourceId;
}
public void setResourceId(String resourceId) {
this.resourceId = resourceId;
}
public String getFirst() {
return first;
}
public void setFirst(String first) {
this.first = first;
}
}
code :
/*********** map initlization ************/
Config config = new Config();
config.getNetworkConfig().setPublicAddress(host + ":" + port);
instance = Hazelcast.newHazelcastInstance(config);
map = instance.getMap("providerWithIndex");
String first = "XXXX"
/***** adding item ***************/
Provider provider = new Provider();
provider.setResourceId("11111");
provider.setFirst( first);
map.put(provider);
/********** getting items ************/
EntryObject e = new PredicateBuilder().getEntryObject();
Predicate predicate = e.get( "first" ).equal( first ) ;
Collection<Provider> providers = map.values(predicate);
once i run both put and get in different runs, the result is 0 - so to the same code i get no response.
my only thought is that it only does local fetch and not remote. but i hope i have a bug somewhere.
Your code looks good, apart from the fact that you can't do map.put(provider), you need to pass a key, so like map.put(someKey, provider);
The query looks & works fine.
I thought I was pretty clever writing this method to load up members of a group. But the values that are returned are not in common name format:
How can I easily grab these values in common name or easily transform them to common name?
private void loadNetworkTeam() {
try {
Session session = Factory.getSession();
Database tmpDB = session.getCurrentDatabase();
Database tmpDB2 = session.getDatabase(tmpDB.getServer(), "names.nsf");
View grpView = tmpDB2.getView("($VIMGroups)");
Vector<Object> nTeam = new Vector<Object>();
nTeam.addElement("NetWorkTeam");
Document grpDoc = grpView.getFirstDocumentByKey("Network Team");
Item itm = grpDoc.getFirstItem("members");
networkTeam.addAll(itm.getValues());
} catch (Exception e) {
XspOpenLogUtil.logError(e);
}
}
Use class Name and its method getCommon() to convert a hierarchical name into a common name.
Example:
Item itm = grpDoc.getFirstItem("members");
List<String> networkTeam = new ArrayList<String>();
for (Object value : itm.getValues()) {
networkTeam.add(session.createName((String) value).getCommon());
}
I am new to Android.I need help to solve the error below.
Got stuck here.
public class ForecastFragment extends Fragment {
private ArrayAdapter<String> mForecastAdapter;
public ForecastFragment() {
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Add this line in order for this fragment to handle menu events.
setHasOptionsMenu(true);
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.forecastfragment, menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_refresh) {
FetchWeatherTask weatherTask = new FetchWeatherTask();
weatherTask.execute("94043");
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Create some dummy data for the ListView. Here's a sample weekly forecast
String[] data = {
"Mon 6/23 - Sunny - 31/17",
"Tue 6/24 - Foggy - 21/8",
"Wed 6/25 - Cloudy - 22/17",
"Thurs 6/26 - Rainy - 18/11",
"Fri 6/27 - Foggy - 21/10",
"Sat 6/28 - TRAPPED IN WEATHERSTATION - 23/18",
"Sun 6/29 - Sunny - 20/7"
};
List<String> weekForecast = new ArrayList<String>(Arrays.asList(data));
// Now that we have some dummy forecast data, create an ArrayAdapter.
// The ArrayAdapter will take data from a source (like our dummy forecast) and
// use it to populate the ListView it's attached to.
mForecastAdapter =
new ArrayAdapter<String>(
getActivity(), // The current context (this activity)
R.layout.list_item_forecast, // The name of the layout ID.
R.id.list_item_forecast_textview, // The ID of the textview to populate.
weekForecast);
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
// Get a reference to the ListView, and attach this adapter to it.
ListView listView = (ListView) rootView.findViewById(R.id.listview_forecast);
listView.setAdapter(mForecastAdapter);
return rootView;
}
public class FetchWeatherTask extends AsyncTask<String, Void, String[]> {
private final String LOG_TAG = FetchWeatherTask.class.getSimpleName();
/* The date/time conversion code is going to be moved outside the asynctask later,
* so for convenience we're breaking it out into its own method now.
*/
private String getReadableDateString(long time){
// Because the API returns a unix timestamp (measured in seconds),
// it must be converted to milliseconds in order to be converted to valid date.
SimpleDateFormat shortenedDateFormat = new SimpleDateFormat("EEE MMM dd");
return shortenedDateFormat.format(time);
}
/**
* Prepare the weather high/lows for presentation.
*/
private String formatHighLows(double high, double low) {
// For presentation, assume the user doesn't care about tenths of a degree.
long roundedHigh = Math.round(high);
long roundedLow = Math.round(low);
String highLowStr = roundedHigh + "/" + roundedLow;
return highLowStr;
}
/**
* Take the String representing the complete forecast in JSON Format and
* pull out the data we need to construct the Strings needed for the wireframes.
*
* Fortunately parsing is easy: constructor takes the JSON string and converts it
* into an Object hierarchy for us.
*/
private String[] getWeatherDataFromJson(String forecastJsonStr, int numDays)
throws JSONException {
// These are the names of the JSON objects that need to be extracted.
final String OWM_LIST = "list";
final String OWM_WEATHER = "weather";
final String OWM_TEMPERATURE = "temp";
final String OWM_MAX = "max";
final String OWM_MIN = "min";
final String OWM_DESCRIPTION = "main";
JSONObject forecastJson = new JSONObject(forecastJsonStr);
JSONArray weatherArray = forecastJson.getJSONArray(OWM_LIST);
// OWM returns daily forecasts based upon the local time of the city that is being
// asked for, which means that we need to know the GMT offset to translate this data
// properly.
// Since this data is also sent in-order and the first day is always the
// current day, we're going to take advantage of that to get a nice
// normalized UTC date for all of our weather.
Time dayTime = new Time();
dayTime.setToNow();
// we start at the day returned by local time. Otherwise this is a mess.
int julianStartDay = Time.getJulianDay(System.currentTimeMillis(), dayTime.gmtoff);
// now we work exclusively in UTC
dayTime = new Time();
String[] resultStrs = new String[numDays];
for(int i = 0; i < weatherArray.length(); i++) {
// For now, using the format "Day, description, hi/low"
String day;
String description;
String highAndLow;
// Get the JSON object representing the day
JSONObject dayForecast = weatherArray.getJSONObject(i);
// The date/time is returned as a long. We need to convert that
// into something human-readable, since most people won't read "1400356800" as
// "this saturday".
long dateTime;
// Cheating to convert this to UTC time, which is what we want anyhow
dateTime = dayTime.setJulianDay(julianStartDay+i);
day = getReadableDateString(dateTime);
// description is in a child array called "weather", which is 1 element long.
JSONObject weatherObject = dayForecast.getJSONArray(OWM_WEATHER).getJSONObject(0);
description = weatherObject.getString(OWM_DESCRIPTION);
// Temperatures are in a child object called "temp". Try not to name variables
// "temp" when working with temperature. It confuses everybody.
JSONObject temperatureObject = dayForecast.getJSONObject(OWM_TEMPERATURE);
double high = temperatureObject.getDouble(OWM_MAX);
double low = temperatureObject.getDouble(OWM_MIN);
highAndLow = formatHighLows(high, low);
resultStrs[i] = day + " - " + description + " - " + highAndLow;
}
for (String s : resultStrs) {
Log.v(LOG_TAG, "Forecast entry: " + s);
}
return resultStrs;
}
#Override
protected String[] doInBackground(String... params) {
// If there's no zip code, there's nothing to look up. Verify size of params.
if (params.length == 0) {
return null;
}
// These two need to be declared outside the try/catch
// so that they can be closed in the finally block.
HttpURLConnection urlConnection = null;
BufferedReader reader = null;
// Will contain the raw JSON response as a string.
String forecastJsonStr = null;
String format = "json";
String units = "metric";
int numDays = 7;
try {
// Construct the URL for the OpenWeatherMap query
// Possible parameters are avaiable at OWM's forecast API page, at
// http://openweathermap.org/API#forecast
final String FORECAST_BASE_URL =
"http://api.openweathermap.org/data/2.5/forecast/daily?";
final String QUERY_PARAM = "q";
final String FORMAT_PARAM = "mode";
final String UNITS_PARAM = "units";
final String DAYS_PARAM = "cnt";
final String APPID_PARAM = "02867cfd75153da1eda43a17f213ffc5";
Uri builtUri = Uri.parse(FORECAST_BASE_URL).buildUpon()
.appendQueryParameter(QUERY_PARAM, params[0])
.appendQueryParameter(FORMAT_PARAM, format)
.appendQueryParameter(UNITS_PARAM, units)
.appendQueryParameter(DAYS_PARAM, Integer.toString(numDays))
.appendQueryParameter(APPID_PARAM, BuildConfig.OPEN_WEATHER_MAP_API_KEY)
.build();
URL url = new URL(builtUri.toString());
Log.v(LOG_TAG, "Built URI " + builtUri.toString());
// Create the request to OpenWeatherMap, and open the connection
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.connect();
// Read the input stream into a String
InputStream inputStream = urlConnection.getInputStream();
StringBuffer buffer = new StringBuffer();
if (inputStream == null) {
// Nothing to do.
return null;
}
reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = reader.readLine()) != null) {
// Since it's JSON, adding a newline isn't necessary (it won't affect parsing)
// But it does make debugging a *lot* easier if you print out the completed
// buffer for debugging.
buffer.append(line + "\n");
}
if (buffer.length() == 0) {
// Stream was empty. No point in parsing.
return null;
}
forecastJsonStr = buffer.toString();
Log.v(LOG_TAG, "Forecast string: " + forecastJsonStr);
} catch (IOException e) {
Log.e(LOG_TAG, "Error ", e);
// If the code didn't successfully get the weather data, there's no point in attemping
// to parse it.
return null;
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
if (reader != null) {
try {
reader.close();
} catch (final IOException e) {
Log.e(LOG_TAG, "Error closing stream", e);
}
}
}
try {
return getWeatherDataFromJson(forecastJsonStr, numDays);
} catch (JSONException e) {
Log.e(LOG_TAG, e.getMessage(), e);
e.printStackTrace();
}
// This will only happen if there was an error getting or parsing the forecast.
return null;
}
}
}
}
}
[{
public final class BuildConfig {
public static final boolean DEBUG = Boolean.parseBoolean("true");
public static final String APPLICATION_ID = "com.example.patels.sunshine";
public static final String BUILD_TYPE = "debug";
public static final String FLAVOR = "";
public static final int VERSION_CODE = 1;
public static final String VERSION_NAME = "1.0";
// Fields from build type: debug
public static final String OPEN_WEATHER_MAP_API_KEY = MyOpenWeatherMapApiKey;
}
I have written this code....I got stuck here..Unable to solve the error.
Help me out....Thank you
Under the app folder you can find build.gradle file, in this make this below changes.
Since you are using a String you have to use this syntax:
it.buildConfigField "String" , "OPEN_WEATHER_MAP_API_KEY" , "\"MyOpenWeatherMapApiKey\""
The last parameter has to be a String.
You should create an account here http://openweathermap.org/ and when you register with your email, you get an APIKey for your account. Use this api key and replace the MyOpenWeatherMapApiKey in the following line:
public static final String OPEN_WEATHER_MAP_API_KEY = MyOpenWeatherMapApiKey;
Another alternative would be to write the APIKey in grandle file as proposed already.
I'd like to use com.ibm.xsp.model.domino.DominoViewData() in my Java class to filter and sort domino view data, but I'm not sure how to go about it.
There aren't a lot of examples out there, and most I've found are using it on an xPage or with a Data Table.
In a JAVA class, I'd like to:
Create a new DominoViewData object.
Set the view name.
Set the column to sort on.
Optionally set a filter.
Finally, retrieve a ViewEntryCollection for further processing.
Can the DominoViewData class be used in that way?
Thanks for your help and any examples would be appreciated.
-- Jeff
As long as your are using them in an XPage application, this is possible. I am not sure what benefits you will have instead of accessing a view directly, but here is the code:
1.You need a helper class to access the tabular data model
/**
* Returns the tabular data model from a datasource
*
* #author Christian Guedemann, Sven Hasselbach
* #param dsCurrent
* datasource to get the tdm from
* #param context
* current FacesContext instance
* #return
* TabularDataModel
*/
public static TabularDataModel getTDM(DataSource dsCurrent, FacesContext context) {
try {
if (dsCurrent instanceof ModelDataSource) {
ModelDataSource mds = (ModelDataSource) dsCurrent;
AbstractDataSource ads = (AbstractDataSource) mds;
ads.load(context);
DataModel tdm = mds.getDataModel();
if (tdm instanceof TabularDataModel) {
TabularDataModel tds = (TabularDataModel) tdm;
return tds;
}
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
2.You have to create your datasource and add them to a component, f.e. the view root
DominoViewData dvd = new DominoViewData();
dvd.setViewName( "YOUR VIEW NAME" );
dvd.setComponent( FacesContext.getCurrentInstance().getViewRoot() );
3.Now you can add the filter options or any additional options to your datasource, f.e. these:
dvd.setSortOrder( "ascending" );
dvd.setSortColumn( "NAME OF COLUMN" );
4.Then access the TDM of the datasource, get the first entry and you have a handle to the parent, a ViewNavigator
TabularDataModel tdm = getTDM( dvd, FacesContext.getCurrentInstance() );
tdm.setDataControl( new UIDataEx() );
Entry noiEntry = (Entry) tdm.getRowData();
ViewNavigator nav = null;
try {
nav = (ViewNavigator) noiEntry.getParent();
System.out.println( "NAV COUNT: " + nav.getCount() );
nav.recylce();
} catch (NotesException e) {
e.printStackTrace();
}
(OK, you now have a ViewNavigator instead of a ViewEntryCollection)
I am developing an e-commerce website that utilises db4o as the backend. All was well until last week when I came across a problem that I have been unable to solve. The code below is quite straight forward. I open a database file, save an object and then try to retrieve it. However I get nothing back. The "users" variable has a count of zero.
public class Program
{
private static string _connectionString = string.Format(#"c:\aaarrrr.db4o");
static void Main(string[] args)
{
TestUser container = new TestUser() { id = 1, Name = "Mohammad", Surname = "Rafiq" };
Db4oFactory.Configure().Diagnostic().AddListener(new DiagnosticToConsole());
using (var dbc = Db4oFactory.OpenFile(_connectionString))
{
dbc.Store(container);
}
IList<TestUser> users = null;
using (var dbc = Db4oFactory.OpenFile(_connectionString))
{
users = dbc.Query<TestUser>(x => x.id == 1).ToList();
}
if (users.Count > 0)
{
Console.WriteLine("{0} {1} with id of {2}", users.First().Name, users.First().Surname, users.First().id);
}
else
{
Console.WriteLine("\nNo data returned.");
}
Console.ReadLine();
}
}
public class TestUser
{
[Indexed]
private int _id = 0;
private string _name = string.Empty;
private string _surname = string.Empty;
public int id { get { return _id; } set { _id = value; } }
public string Name { get { return _name; } set { _name = value; } }
public string Surname { get { return _surname; } set { _surname = value; } }
}
I have attached db4o diagnostic listener and I see nothing in the console output. Everything seems fine. I know I am writing to the file because I can see the file size increase and the timestamp is also updated. I have checked all the project settings and they are all set to default. I am using .net 4, visual studio 2010 beta and windows 7. I have done some reading regarding reflection permission but I cant see how this applies here. Any help or ideas would be knidly appreciated.
After calling store(), you need to commit() before leaving the using{} statement. You closed your database before committing your changes.